./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:06:57,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:06:57,997 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:06:58,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:06:58,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:06:58,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:06:58,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:06:58,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:06:58,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:06:58,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:06:58,062 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:06:58,063 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:06:58,063 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:06:58,065 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:06:58,066 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:06:58,066 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:06:58,067 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:06:58,068 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:06:58,069 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:06:58,070 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:06:58,070 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:06:58,071 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:06:58,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:06:58,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:06:58,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:06:58,074 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:06:58,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:06:58,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:06:58,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:06:58,075 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:06:58,077 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:06:58,077 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:06:58,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:06:58,078 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:06:58,078 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:06:58,078 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:06:58,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:06:58,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:06:58,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:06:58,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:58,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:06:58,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:06:58,082 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:06:58,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:06:58,083 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:06:58,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:06:58,083 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_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2023-11-06 21:06:58,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:06:58,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:06:58,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:06:58,481 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:06:58,483 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:06:58,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2023-11-06 21:07:01,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:07:01,936 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:07:01,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2023-11-06 21:07:01,958 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/data/0827bf8da/c857a49e01354a76b259d6ae256060ab/FLAGb9ab25681 [2023-11-06 21:07:01,973 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/data/0827bf8da/c857a49e01354a76b259d6ae256060ab [2023-11-06 21:07:01,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:07:01,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:07:01,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:01,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:07:01,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:07:01,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:01" (1/1) ... [2023-11-06 21:07:01,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc91263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:01, skipping insertion in model container [2023-11-06 21:07:01,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:01" (1/1) ... [2023-11-06 21:07:02,080 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:07:02,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:02,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:07:02,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:07:02,796 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:07:02,797 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:07:02,805 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:07:02,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02 WrapperNode [2023-11-06 21:07:02,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:07:02,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:02,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:07:02,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:07:02,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,902 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 217 [2023-11-06 21:07:02,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:07:02,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:07:02,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:07:02,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:07:02,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:02,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:07:03,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:07:03,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:07:03,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:07:03,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (1/1) ... [2023-11-06 21:07:03,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:07:03,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:07:03,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:07:03,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a2cddef-92ae-40e1-96b6-58e21fdb3c87/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:07:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:07:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:07:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:07:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:07:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:07:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:07:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:07:03,122 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:07:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:07:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:07:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:07:03,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:07:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:07:03,125 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:07:03,358 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:07:03,361 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:07:03,897 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:07:04,231 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:07:04,232 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:07:04,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:04 BoogieIcfgContainer [2023-11-06 21:07:04,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:07:04,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:07:04,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:07:04,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:07:04,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:01" (1/3) ... [2023-11-06 21:07:04,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7006c808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:04, skipping insertion in model container [2023-11-06 21:07:04,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:02" (2/3) ... [2023-11-06 21:07:04,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7006c808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:04, skipping insertion in model container [2023-11-06 21:07:04,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:04" (3/3) ... [2023-11-06 21:07:04,256 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-11-06 21:07:04,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:07:04,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 21:07:04,278 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:07:04,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:07:04,440 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:07:04,460 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 123 transitions, 254 flow [2023-11-06 21:07:04,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 123 transitions, 254 flow [2023-11-06 21:07:04,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 123 transitions, 254 flow [2023-11-06 21:07:04,555 INFO L124 PetriNetUnfolderBase]: 3/121 cut-off events. [2023-11-06 21:07:04,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:07:04,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 121 events. 3/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-06 21:07:04,566 INFO L119 LiptonReduction]: Number of co-enabled transitions 1802 [2023-11-06 21:07:12,530 INFO L134 LiptonReduction]: Checked pairs total: 5503 [2023-11-06 21:07:12,531 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-11-06 21:07:12,540 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 30 transitions, 68 flow [2023-11-06 21:07:12,611 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 376 states, 364 states have (on average 2.7252747252747254) internal successors, (992), 375 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:12,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:07:12,635 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;@6628da4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:07:12,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 21:07:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 376 states, 364 states have (on average 2.7252747252747254) internal successors, (992), 375 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 21:07:12,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:12,644 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 21:07:12,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:12,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 740, now seen corresponding path program 1 times [2023-11-06 21:07:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704896676] [2023-11-06 21:07:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:12,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:12,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:12,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704896676] [2023-11-06 21:07:12,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704896676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:12,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:07:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090862319] [2023-11-06 21:07:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:07:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:07:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:07:12,839 INFO L87 Difference]: Start difference. First operand has 376 states, 364 states have (on average 2.7252747252747254) internal successors, (992), 375 states have internal predecessors, (992), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:12,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:12,977 INFO L93 Difference]: Finished difference Result 362 states and 914 transitions. [2023-11-06 21:07:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:07:12,981 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2023-11-06 21:07:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:13,006 INFO L225 Difference]: With dead ends: 362 [2023-11-06 21:07:13,007 INFO L226 Difference]: Without dead ends: 362 [2023-11-06 21:07:13,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:07:13,013 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:13,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-06 21:07:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-11-06 21:07:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 354 states have (on average 2.5819209039548023) internal successors, (914), 361 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 914 transitions. [2023-11-06 21:07:13,087 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 914 transitions. Word has length 1 [2023-11-06 21:07:13,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:13,088 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 914 transitions. [2023-11-06 21:07:13,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:13,088 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 914 transitions. [2023-11-06 21:07:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 21:07:13,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:13,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:07:13,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:07:13,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:13,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash 703265913, now seen corresponding path program 1 times [2023-11-06 21:07:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:13,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819699318] [2023-11-06 21:07:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:13,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:13,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819699318] [2023-11-06 21:07:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819699318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:07:13,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283481435] [2023-11-06 21:07:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:13,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:13,564 INFO L87 Difference]: Start difference. First operand 362 states and 914 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-06 21:07:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:13,687 INFO L93 Difference]: Finished difference Result 320 states and 801 transitions. [2023-11-06 21:07:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2023-11-06 21:07:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:13,691 INFO L225 Difference]: With dead ends: 320 [2023-11-06 21:07:13,691 INFO L226 Difference]: Without dead ends: 320 [2023-11-06 21:07:13,691 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 [2023-11-06 21:07:13,693 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:13,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-06 21:07:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-11-06 21:07:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 2.5428571428571427) internal successors, (801), 319 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 801 transitions. [2023-11-06 21:07:13,726 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 801 transitions. Word has length 5 [2023-11-06 21:07:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:13,726 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 801 transitions. [2023-11-06 21:07:13,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-06 21:07:13,726 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 801 transitions. [2023-11-06 21:07:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 21:07:13,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:13,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:07:13,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:07:13,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:13,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash 326407425, now seen corresponding path program 1 times [2023-11-06 21:07:13,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:13,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639267432] [2023-11-06 21:07:13,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:13,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:13,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:13,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639267432] [2023-11-06 21:07:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639267432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:13,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:13,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:07:13,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719729252] [2023-11-06 21:07:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:13,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:07:13,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:07:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:07:13,941 INFO L87 Difference]: Start difference. First operand 320 states and 801 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:14,051 INFO L93 Difference]: Finished difference Result 278 states and 688 transitions. [2023-11-06 21:07:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:07:14,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-11-06 21:07:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:14,055 INFO L225 Difference]: With dead ends: 278 [2023-11-06 21:07:14,055 INFO L226 Difference]: Without dead ends: 266 [2023-11-06 21:07:14,056 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 [2023-11-06 21:07:14,059 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:14,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-06 21:07:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-06 21:07:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 264 states have (on average 2.5) internal successors, (660), 265 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 660 transitions. [2023-11-06 21:07:14,086 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 660 transitions. Word has length 6 [2023-11-06 21:07:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:14,086 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 660 transitions. [2023-11-06 21:07:14,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 660 transitions. [2023-11-06 21:07:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:07:14,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:14,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:14,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:07:14,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:14,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 146590577, now seen corresponding path program 1 times [2023-11-06 21:07:14,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:14,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146854810] [2023-11-06 21:07:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:14,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:14,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146854810] [2023-11-06 21:07:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146854810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:14,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:14,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:07:14,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317492078] [2023-11-06 21:07:14,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:14,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:07:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:07:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:14,883 INFO L87 Difference]: Start difference. First operand 266 states and 660 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-11-06 21:07:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:15,156 INFO L93 Difference]: Finished difference Result 266 states and 653 transitions. [2023-11-06 21:07:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2023-11-06 21:07:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:15,160 INFO L225 Difference]: With dead ends: 266 [2023-11-06 21:07:15,160 INFO L226 Difference]: Without dead ends: 266 [2023-11-06 21:07:15,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:07:15,162 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:15,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:07:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-06 21:07:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-06 21:07:15,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 264 states have (on average 2.4734848484848486) internal successors, (653), 265 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 653 transitions. [2023-11-06 21:07:15,201 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 653 transitions. Word has length 8 [2023-11-06 21:07:15,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:15,202 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 653 transitions. [2023-11-06 21:07:15,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2023-11-06 21:07:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 653 transitions. [2023-11-06 21:07:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:07:15,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:15,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:15,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:07:15,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:15,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 146590617, now seen corresponding path program 1 times [2023-11-06 21:07:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820650498] [2023-11-06 21:07:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:15,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820650498] [2023-11-06 21:07:15,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820650498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:15,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:15,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:15,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512797904] [2023-11-06 21:07:15,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:15,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:15,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:15,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:15,562 INFO L87 Difference]: Start difference. First operand 266 states and 653 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-06 21:07:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:15,673 INFO L93 Difference]: Finished difference Result 224 states and 519 transitions. [2023-11-06 21:07:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:07:15,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 [2023-11-06 21:07:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:15,676 INFO L225 Difference]: With dead ends: 224 [2023-11-06 21:07:15,676 INFO L226 Difference]: Without dead ends: 182 [2023-11-06 21:07:15,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:15,677 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:15,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-06 21:07:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-06 21:07:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.3591160220994474) internal successors, (427), 181 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 427 transitions. [2023-11-06 21:07:15,685 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 427 transitions. Word has length 8 [2023-11-06 21:07:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:15,685 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 427 transitions. [2023-11-06 21:07:15,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-06 21:07:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 427 transitions. [2023-11-06 21:07:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 21:07:15,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:15,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:15,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:07:15,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:15,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash -924923239, now seen corresponding path program 1 times [2023-11-06 21:07:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471554062] [2023-11-06 21:07:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:15,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:15,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471554062] [2023-11-06 21:07:15,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471554062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:15,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:15,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:07:15,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015358400] [2023-11-06 21:07:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:15,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:07:15,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:16,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:07:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:07:16,000 INFO L87 Difference]: Start difference. First operand 182 states and 427 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) 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) [2023-11-06 21:07:16,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:16,154 INFO L93 Difference]: Finished difference Result 185 states and 420 transitions. [2023-11-06 21:07:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:07:16,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 [2023-11-06 21:07:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:16,156 INFO L225 Difference]: With dead ends: 185 [2023-11-06 21:07:16,157 INFO L226 Difference]: Without dead ends: 164 [2023-11-06 21:07:16,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:07:16,158 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:16,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:07:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-06 21:07:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-06 21:07:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.3251533742331287) internal successors, (379), 163 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 379 transitions. [2023-11-06 21:07:16,167 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 379 transitions. Word has length 11 [2023-11-06 21:07:16,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:16,167 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 379 transitions. [2023-11-06 21:07:16,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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) [2023-11-06 21:07:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 379 transitions. [2023-11-06 21:07:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 21:07:16,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:16,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:16,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:07:16,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:16,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:16,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1818878409, now seen corresponding path program 1 times [2023-11-06 21:07:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:16,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345357777] [2023-11-06 21:07:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:16,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:17,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345357777] [2023-11-06 21:07:17,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345357777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:17,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:17,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:07:17,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935847004] [2023-11-06 21:07:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:17,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:07:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:07:17,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:07:17,322 INFO L87 Difference]: Start difference. First operand 164 states and 379 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:17,662 INFO L93 Difference]: Finished difference Result 224 states and 509 transitions. [2023-11-06 21:07:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:07:17,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 21:07:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:17,665 INFO L225 Difference]: With dead ends: 224 [2023-11-06 21:07:17,665 INFO L226 Difference]: Without dead ends: 207 [2023-11-06 21:07:17,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:07:17,666 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:17,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:07:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-06 21:07:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 189. [2023-11-06 21:07:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.3031914893617023) internal successors, (433), 188 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 433 transitions. [2023-11-06 21:07:17,677 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 433 transitions. Word has length 14 [2023-11-06 21:07:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:17,677 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 433 transitions. [2023-11-06 21:07:17,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 433 transitions. [2023-11-06 21:07:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 21:07:17,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:17,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:17,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:07:17,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:17,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash -550732007, now seen corresponding path program 1 times [2023-11-06 21:07:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535573757] [2023-11-06 21:07:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:20,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535573757] [2023-11-06 21:07:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535573757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:20,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:20,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:07:20,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712019237] [2023-11-06 21:07:20,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:20,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:07:20,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:07:20,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:07:20,983 INFO L87 Difference]: Start difference. First operand 189 states and 433 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2023-11-06 21:07:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:22,405 INFO L93 Difference]: Finished difference Result 279 states and 627 transitions. [2023-11-06 21:07:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:07:22,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) Word has length 15 [2023-11-06 21:07:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:22,409 INFO L225 Difference]: With dead ends: 279 [2023-11-06 21:07:22,409 INFO L226 Difference]: Without dead ends: 269 [2023-11-06 21:07:22,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2023-11-06 21:07:22,410 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:22,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:07:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-06 21:07:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 204. [2023-11-06 21:07:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.315270935960591) internal successors, (470), 203 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 470 transitions. [2023-11-06 21:07:22,420 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 470 transitions. Word has length 15 [2023-11-06 21:07:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:22,421 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 470 transitions. [2023-11-06 21:07:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2023-11-06 21:07:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 470 transitions. [2023-11-06 21:07:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 21:07:22,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:22,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:22,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:07:22,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:22,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash -550722397, now seen corresponding path program 1 times [2023-11-06 21:07:22,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:22,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570480791] [2023-11-06 21:07:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:22,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:23,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:23,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570480791] [2023-11-06 21:07:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570480791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:23,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:23,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:07:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232483915] [2023-11-06 21:07:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:07:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:07:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:07:23,310 INFO L87 Difference]: Start difference. First operand 204 states and 470 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2023-11-06 21:07:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:23,817 INFO L93 Difference]: Finished difference Result 330 states and 748 transitions. [2023-11-06 21:07:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:07:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) Word has length 15 [2023-11-06 21:07:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:23,820 INFO L225 Difference]: With dead ends: 330 [2023-11-06 21:07:23,821 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 21:07:23,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:07:23,823 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:23,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 21:07:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 21:07:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 214. [2023-11-06 21:07:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.300469483568075) internal successors, (490), 213 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 490 transitions. [2023-11-06 21:07:23,836 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 490 transitions. Word has length 15 [2023-11-06 21:07:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:23,837 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 490 transitions. [2023-11-06 21:07:23,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2023-11-06 21:07:23,837 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 490 transitions. [2023-11-06 21:07:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 21:07:23,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:23,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:23,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:07:23,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:23,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1706581069, now seen corresponding path program 2 times [2023-11-06 21:07:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:23,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904390155] [2023-11-06 21:07:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:23,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:07:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:07:26,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:07:26,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904390155] [2023-11-06 21:07:26,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904390155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:07:26,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:07:26,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:07:26,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164008290] [2023-11-06 21:07:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:07:26,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:07:26,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:07:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:07:26,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:07:26,118 INFO L87 Difference]: Start difference. First operand 214 states and 490 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2023-11-06 21:07:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:07:27,098 INFO L93 Difference]: Finished difference Result 230 states and 394 transitions. [2023-11-06 21:07:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:07:27,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) Word has length 15 [2023-11-06 21:07:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:07:27,101 INFO L225 Difference]: With dead ends: 230 [2023-11-06 21:07:27,101 INFO L226 Difference]: Without dead ends: 195 [2023-11-06 21:07:27,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-11-06 21:07:27,102 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:07:27,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:07:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-06 21:07:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 119. [2023-11-06 21:07:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.7796610169491525) internal successors, (210), 118 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:07:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 210 transitions. [2023-11-06 21:07:27,108 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 210 transitions. Word has length 15 [2023-11-06 21:07:27,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:07:27,108 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 210 transitions. [2023-11-06 21:07:27,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2023-11-06 21:07:27,109 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 210 transitions. [2023-11-06 21:07:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 21:07:27,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:07:27,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:07:27,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:07:27,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 21:07:27,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:07:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1027828029, now seen corresponding path program 1 times [2023-11-06 21:07:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:07:27,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033785021] [2023-11-06 21:07:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:07:27,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:07:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat