./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:00:45,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:00:46,066 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 01:00:46,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:00:46,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:00:46,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:00:46,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:00:46,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:00:46,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:00:46,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:00:46,132 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:00:46,133 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:00:46,133 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:00:46,135 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:00:46,136 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:00:46,136 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:00:46,136 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:00:46,138 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:00:46,139 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:00:46,139 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:00:46,140 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:00:46,140 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:00:46,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:00:46,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:00:46,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:00:46,143 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:00:46,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:00:46,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:00:46,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:00:46,144 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:00:46,146 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:00:46,146 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:00:46,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:00:46,147 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:00:46,161 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:00:46,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:00:46,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:00:46,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:00:46,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:00:46,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:46,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:00:46,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:00:46,164 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:00:46,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:00:46,164 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:00:46,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:00:46,165 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_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e136f4ab00a1c93eb400bb9f2a21b2887cfec20e18dff1c5960bc25f16f1bcad [2023-11-12 01:00:46,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:00:46,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:00:46,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:00:46,482 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:00:46,483 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:00:46,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 01:00:49,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:00:49,999 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:00:50,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/sv-benchmarks/c/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 01:00:50,018 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/data/a9e8281ba/575f2bfb7e7d4fbc94b77d326ab96c00/FLAGaa2aace80 [2023-11-12 01:00:50,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/data/a9e8281ba/575f2bfb7e7d4fbc94b77d326ab96c00 [2023-11-12 01:00:50,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:00:50,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:00:50,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:50,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:00:50,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:00:50,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a017eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50, skipping insertion in model container [2023-11-12 01:00:50,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,096 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:00:50,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:50,502 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:00:50,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:50,621 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:00:50,621 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:00:50,629 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:00:50,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50 WrapperNode [2023-11-12 01:00:50,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:50,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:50,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:00:50,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:00:50,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,706 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-12 01:00:50,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:50,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:00:50,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:00:50,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:00:50,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:00:50,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:00:50,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:00:50,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:00:50,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (1/1) ... [2023-11-12 01:00:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:50,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:50,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:00:50,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:00:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:00:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 01:00:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:00:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:00:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:00:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 01:00:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 01:00:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 01:00:50,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 01:00:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 01:00:50,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 01:00:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:00:50,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 01:00:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:00:50,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:00:50,839 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 01:00:50,980 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:00:50,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:00:51,300 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:00:51,308 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:00:51,310 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:00:51,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:51 BoogieIcfgContainer [2023-11-12 01:00:51,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:00:51,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:00:51,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:00:51,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:00:51,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:00:50" (1/3) ... [2023-11-12 01:00:51,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdac479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:51, skipping insertion in model container [2023-11-12 01:00:51,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:50" (2/3) ... [2023-11-12 01:00:51,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdac479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:51, skipping insertion in model container [2023-11-12 01:00:51,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:51" (3/3) ... [2023-11-12 01:00:51,329 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-12 01:00:51,350 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:00:51,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 01:00:51,351 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:00:51,457 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 01:00:51,503 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:00:51,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 102 transitions, 216 flow [2023-11-12 01:00:51,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 102 transitions, 216 flow [2023-11-12 01:00:51,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 102 transitions, 216 flow [2023-11-12 01:00:51,620 INFO L124 PetriNetUnfolderBase]: 3/99 cut-off events. [2023-11-12 01:00:51,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 01:00:51,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 99 events. 3/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-12 01:00:51,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 1858 [2023-11-12 01:00:55,353 INFO L134 LiptonReduction]: Checked pairs total: 3372 [2023-11-12 01:00:55,354 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-12 01:00:55,363 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 29 transitions, 70 flow [2023-11-12 01:00:55,445 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 308 states, 300 states have (on average 3.026666666666667) internal successors, (908), 307 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:55,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:00:55,480 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;@22ee8e21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:00:55,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-12 01:00:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 300 states have (on average 3.026666666666667) internal successors, (908), 307 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:55,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 01:00:55,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:55,492 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 01:00:55,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:55,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:55,501 INFO L85 PathProgramCache]: Analyzing trace with hash 372, now seen corresponding path program 1 times [2023-11-12 01:00:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:55,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893247518] [2023-11-12 01:00:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:55,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893247518] [2023-11-12 01:00:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893247518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:55,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:55,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 01:00:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591216559] [2023-11-12 01:00:55,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:55,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 01:00:55,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:55,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 01:00:55,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:00:55,693 INFO L87 Difference]: Start difference. First operand has 308 states, 300 states have (on average 3.026666666666667) internal successors, (908), 307 states have internal predecessors, (908), 0 states have call successors, (0), 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) [2023-11-12 01:00:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:55,782 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2023-11-12 01:00:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 01:00:55,785 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 [2023-11-12 01:00:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:55,808 INFO L225 Difference]: With dead ends: 274 [2023-11-12 01:00:55,808 INFO L226 Difference]: Without dead ends: 274 [2023-11-12 01:00:55,809 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 [2023-11-12 01:00:55,813 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:55,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:00:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-12 01:00:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-11-12 01:00:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 272 states have (on average 2.889705882352941) internal successors, (786), 273 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 786 transitions. [2023-11-12 01:00:55,886 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 786 transitions. Word has length 1 [2023-11-12 01:00:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:55,886 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 786 transitions. [2023-11-12 01:00:55,887 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) [2023-11-12 01:00:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 786 transitions. [2023-11-12 01:00:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:00:55,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:55,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:55,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:00:55,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:55,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash 470179874, now seen corresponding path program 1 times [2023-11-12 01:00:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437388729] [2023-11-12 01:00:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:56,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:56,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437388729] [2023-11-12 01:00:56,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437388729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:56,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:56,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:00:56,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479650575] [2023-11-12 01:00:56,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:56,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:56,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:56,408 INFO L87 Difference]: Start difference. First operand 274 states and 786 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-11-12 01:00:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:56,479 INFO L93 Difference]: Finished difference Result 361 states and 1012 transitions. [2023-11-12 01:00:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2023-11-12 01:00:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:56,489 INFO L225 Difference]: With dead ends: 361 [2023-11-12 01:00:56,489 INFO L226 Difference]: Without dead ends: 361 [2023-11-12 01:00:56,490 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 [2023-11-12 01:00:56,493 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:56,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-12 01:00:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 271. [2023-11-12 01:00:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 269 states have (on average 2.8810408921933086) internal successors, (775), 270 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 775 transitions. [2023-11-12 01:00:56,551 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 775 transitions. Word has length 8 [2023-11-12 01:00:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:56,553 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 775 transitions. [2023-11-12 01:00:56,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-11-12 01:00:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 775 transitions. [2023-11-12 01:00:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 01:00:56,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:56,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:56,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:00:56,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:56,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1690625439, now seen corresponding path program 1 times [2023-11-12 01:00:56,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:56,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743749109] [2023-11-12 01:00:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:56,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:56,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:56,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743749109] [2023-11-12 01:00:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743749109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:56,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:56,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:56,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716304948] [2023-11-12 01:00:56,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:56,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:56,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:56,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:56,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:56,833 INFO L87 Difference]: Start difference. First operand 271 states and 775 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:56,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:56,912 INFO L93 Difference]: Finished difference Result 334 states and 931 transitions. [2023-11-12 01:00:56,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:56,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 01:00:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:56,916 INFO L225 Difference]: With dead ends: 334 [2023-11-12 01:00:56,916 INFO L226 Difference]: Without dead ends: 334 [2023-11-12 01:00:56,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:56,921 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:56,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-12 01:00:56,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 262. [2023-11-12 01:00:56,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 260 states have (on average 2.8653846153846154) internal successors, (745), 261 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 745 transitions. [2023-11-12 01:00:56,938 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 745 transitions. Word has length 9 [2023-11-12 01:00:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:56,938 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 745 transitions. [2023-11-12 01:00:56,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:56,939 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 745 transitions. [2023-11-12 01:00:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 01:00:56,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:56,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:56,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:00:56,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:56,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:56,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1690674598, now seen corresponding path program 1 times [2023-11-12 01:00:56,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:56,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032328219] [2023-11-12 01:00:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:56,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:57,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:57,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032328219] [2023-11-12 01:00:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032328219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:57,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:57,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:00:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474947482] [2023-11-12 01:00:57,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:57,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:00:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:00:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:57,356 INFO L87 Difference]: Start difference. First operand 262 states and 745 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:57,509 INFO L93 Difference]: Finished difference Result 403 states and 1133 transitions. [2023-11-12 01:00:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:00:57,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 01:00:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:57,513 INFO L225 Difference]: With dead ends: 403 [2023-11-12 01:00:57,513 INFO L226 Difference]: Without dead ends: 355 [2023-11-12 01:00:57,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:57,515 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:57,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 22 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:57,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-12 01:00:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 319. [2023-11-12 01:00:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 317 states have (on average 2.858044164037855) internal successors, (906), 318 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 906 transitions. [2023-11-12 01:00:57,531 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 906 transitions. Word has length 9 [2023-11-12 01:00:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:57,531 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 906 transitions. [2023-11-12 01:00:57,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 906 transitions. [2023-11-12 01:00:57,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 01:00:57,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:57,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:57,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:00:57,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:57,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1690672497, now seen corresponding path program 1 times [2023-11-12 01:00:57,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:57,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925682077] [2023-11-12 01:00:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:57,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:57,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925682077] [2023-11-12 01:00:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925682077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:57,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315319423] [2023-11-12 01:00:57,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:57,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:57,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:57,654 INFO L87 Difference]: Start difference. First operand 319 states and 906 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:57,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:57,704 INFO L93 Difference]: Finished difference Result 364 states and 1002 transitions. [2023-11-12 01:00:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:57,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 01:00:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:57,707 INFO L225 Difference]: With dead ends: 364 [2023-11-12 01:00:57,708 INFO L226 Difference]: Without dead ends: 364 [2023-11-12 01:00:57,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:57,709 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:57,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:00:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-12 01:00:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 310. [2023-11-12 01:00:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 308 states have (on average 2.814935064935065) internal successors, (867), 309 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 867 transitions. [2023-11-12 01:00:57,726 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 867 transitions. Word has length 9 [2023-11-12 01:00:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:57,726 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 867 transitions. [2023-11-12 01:00:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 867 transitions. [2023-11-12 01:00:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:00:57,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:57,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:57,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:00:57,738 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:57,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:57,739 INFO L85 PathProgramCache]: Analyzing trace with hash 869779348, now seen corresponding path program 1 times [2023-11-12 01:00:57,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:57,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942953301] [2023-11-12 01:00:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:57,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:57,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942953301] [2023-11-12 01:00:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942953301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048972886] [2023-11-12 01:00:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:57,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:57,956 INFO L87 Difference]: Start difference. First operand 310 states and 867 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:58,039 INFO L93 Difference]: Finished difference Result 394 states and 1085 transitions. [2023-11-12 01:00:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:00:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-12 01:00:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:58,043 INFO L225 Difference]: With dead ends: 394 [2023-11-12 01:00:58,043 INFO L226 Difference]: Without dead ends: 394 [2023-11-12 01:00:58,044 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 [2023-11-12 01:00:58,045 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:58,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-12 01:00:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 328. [2023-11-12 01:00:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 326 states have (on average 2.815950920245399) internal successors, (918), 327 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 918 transitions. [2023-11-12 01:00:58,059 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 918 transitions. Word has length 10 [2023-11-12 01:00:58,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:58,060 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 918 transitions. [2023-11-12 01:00:58,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,060 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 918 transitions. [2023-11-12 01:00:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:00:58,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:58,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:58,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:00:58,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:58,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash 871238518, now seen corresponding path program 2 times [2023-11-12 01:00:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790741434] [2023-11-12 01:00:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:58,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:58,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790741434] [2023-11-12 01:00:58,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790741434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:58,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:58,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:58,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096608139] [2023-11-12 01:00:58,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:58,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:58,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:58,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:58,184 INFO L87 Difference]: Start difference. First operand 328 states and 918 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:58,237 INFO L93 Difference]: Finished difference Result 355 states and 945 transitions. [2023-11-12 01:00:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:58,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-12 01:00:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:58,240 INFO L225 Difference]: With dead ends: 355 [2023-11-12 01:00:58,240 INFO L226 Difference]: Without dead ends: 256 [2023-11-12 01:00:58,240 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 [2023-11-12 01:00:58,241 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:58,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 5 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:00:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-12 01:00:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-12 01:00:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 254 states have (on average 2.645669291338583) internal successors, (672), 255 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2023-11-12 01:00:58,251 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 10 [2023-11-12 01:00:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:58,252 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2023-11-12 01:00:58,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2023-11-12 01:00:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:00:58,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:58,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:58,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 01:00:58,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:58,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -678516403, now seen corresponding path program 1 times [2023-11-12 01:00:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880056058] [2023-11-12 01:00:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:58,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:58,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880056058] [2023-11-12 01:00:58,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880056058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:58,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:58,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:00:58,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181560042] [2023-11-12 01:00:58,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:58,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:00:58,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:00:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:00:58,656 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:58,907 INFO L93 Difference]: Finished difference Result 385 states and 1016 transitions. [2023-11-12 01:00:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:00:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-12 01:00:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:58,910 INFO L225 Difference]: With dead ends: 385 [2023-11-12 01:00:58,910 INFO L226 Difference]: Without dead ends: 256 [2023-11-12 01:00:58,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:00:58,911 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:58,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:00:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-12 01:00:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-11-12 01:00:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 254 states have (on average 2.62992125984252) internal successors, (668), 255 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 668 transitions. [2023-11-12 01:00:58,922 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 668 transitions. Word has length 10 [2023-11-12 01:00:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:58,923 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 668 transitions. [2023-11-12 01:00:58,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 668 transitions. [2023-11-12 01:00:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:00:58,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:58,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:58,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 01:00:58,924 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:58,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash 371239493, now seen corresponding path program 2 times [2023-11-12 01:00:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:58,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297805389] [2023-11-12 01:00:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:58,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:59,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297805389] [2023-11-12 01:00:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297805389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:59,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:00:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425024099] [2023-11-12 01:00:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:00:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:59,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:00:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:00:59,271 INFO L87 Difference]: Start difference. First operand 256 states and 668 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:59,413 INFO L93 Difference]: Finished difference Result 220 states and 557 transitions. [2023-11-12 01:00:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:00:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-12 01:00:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:59,415 INFO L225 Difference]: With dead ends: 220 [2023-11-12 01:00:59,415 INFO L226 Difference]: Without dead ends: 88 [2023-11-12 01:00:59,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:00:59,416 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 24 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:59,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 27 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:59,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-12 01:00:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-12 01:00:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3793103448275863) internal successors, (207), 87 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 207 transitions. [2023-11-12 01:00:59,423 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 207 transitions. Word has length 10 [2023-11-12 01:00:59,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:59,423 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 207 transitions. [2023-11-12 01:00:59,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 207 transitions. [2023-11-12 01:00:59,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 01:00:59,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:59,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:59,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 01:00:59,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:59,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1190227209, now seen corresponding path program 1 times [2023-11-12 01:00:59,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:59,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807057089] [2023-11-12 01:00:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:59,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807057089] [2023-11-12 01:00:59,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807057089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:59,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:59,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:59,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314903828] [2023-11-12 01:00:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:59,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:00:59,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:00:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:59,598 INFO L87 Difference]: Start difference. First operand 88 states and 207 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2023-11-12 01:00:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:59,652 INFO L93 Difference]: Finished difference Result 118 states and 268 transitions. [2023-11-12 01:00:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2023-11-12 01:00:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:59,654 INFO L225 Difference]: With dead ends: 118 [2023-11-12 01:00:59,654 INFO L226 Difference]: Without dead ends: 64 [2023-11-12 01:00:59,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:59,655 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:59,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:00:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-12 01:00:59,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-12 01:00:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.1746031746031744) internal successors, (137), 63 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2023-11-12 01:00:59,659 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2023-11-12 01:00:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:59,660 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2023-11-12 01:00:59,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2023-11-12 01:00:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2023-11-12 01:00:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 01:00:59,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:59,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:59,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 01:00:59,661 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:59,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash 45112585, now seen corresponding path program 1 times [2023-11-12 01:00:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247611160] [2023-11-12 01:00:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:59,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247611160] [2023-11-12 01:00:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247611160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:59,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058470551] [2023-11-12 01:00:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:59,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:59,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:59,783 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:59,815 INFO L93 Difference]: Finished difference Result 56 states and 109 transitions. [2023-11-12 01:00:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:59,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-11-12 01:00:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:59,816 INFO L225 Difference]: With dead ends: 56 [2023-11-12 01:00:59,817 INFO L226 Difference]: Without dead ends: 56 [2023-11-12 01:00:59,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:59,818 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:59,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:00:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-12 01:00:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-12 01:00:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2023-11-12 01:00:59,822 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2023-11-12 01:00:59,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:59,822 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2023-11-12 01:00:59,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,823 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2023-11-12 01:00:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:00:59,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:59,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 01:00:59,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:59,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash -707838215, now seen corresponding path program 1 times [2023-11-12 01:00:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:59,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78965054] [2023-11-12 01:00:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:59,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:59,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78965054] [2023-11-12 01:00:59,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78965054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:59,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:59,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030128850] [2023-11-12 01:00:59,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:59,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:59,946 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:59,983 INFO L93 Difference]: Finished difference Result 42 states and 69 transitions. [2023-11-12 01:00:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 01:00:59,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:59,985 INFO L225 Difference]: With dead ends: 42 [2023-11-12 01:00:59,985 INFO L226 Difference]: Without dead ends: 42 [2023-11-12 01:00:59,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:59,986 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:59,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:00:59,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-12 01:00:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-12 01:00:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 41 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2023-11-12 01:00:59,989 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2023-11-12 01:00:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:59,990 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2023-11-12 01:00:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2023-11-12 01:00:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 01:00:59,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:59,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:59,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 01:00:59,991 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:00:59,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash -468953290, now seen corresponding path program 1 times [2023-11-12 01:00:59,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:59,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643591387] [2023-11-12 01:00:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:59,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:00,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643591387] [2023-11-12 01:01:00,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643591387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:00,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:00,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:01:00,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329416621] [2023-11-12 01:01:00,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:00,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:01:00,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:00,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:01:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:00,118 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2023-11-12 01:01:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:00,162 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2023-11-12 01:01:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:01:00,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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 [2023-11-12 01:01:00,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:00,163 INFO L225 Difference]: With dead ends: 33 [2023-11-12 01:01:00,163 INFO L226 Difference]: Without dead ends: 33 [2023-11-12 01:01:00,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:00,164 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:00,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:01:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-12 01:01:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-12 01:01:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2023-11-12 01:01:00,167 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2023-11-12 01:01:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:00,167 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2023-11-12 01:01:00,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 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) [2023-11-12 01:01:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2023-11-12 01:01:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 01:01:00,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:00,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 01:01:00,169 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-12 01:01:00,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 247619767, now seen corresponding path program 1 times [2023-11-12 01:01:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400403617] [2023-11-12 01:01:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:00,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400403617] [2023-11-12 01:01:00,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400403617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:00,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:00,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:01:00,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863482753] [2023-11-12 01:01:00,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:00,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:01:00,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:00,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:01:00,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:00,294 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:00,332 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2023-11-12 01:01:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:01:00,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 01:01:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:00,333 INFO L225 Difference]: With dead ends: 32 [2023-11-12 01:01:00,333 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 01:01:00,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:01:00,334 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:00,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:01:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 01:01:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 01:01:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 01:01:00,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2023-11-12 01:01:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:00,337 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 01:01:00,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 01:01:00,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 01:01:00,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-12 01:01:00,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-12 01:01:00,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-12 01:01:00,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-12 01:01:00,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-12 01:01:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-12 01:01:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-12 01:01:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-12 01:01:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-12 01:01:00,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-12 01:01:00,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-12 01:01:00,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 01:01:00,345 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:00,348 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 01:01:00,348 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 01:01:00,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 01:01:00 BasicIcfg [2023-11-12 01:01:00,350 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 01:01:00,351 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 01:01:00,351 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 01:01:00,351 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 01:01:00,352 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:51" (3/4) ... [2023-11-12 01:01:00,354 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 01:01:00,359 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-12 01:01:00,359 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-12 01:01:00,359 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-12 01:01:00,365 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-12 01:01:00,365 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-12 01:01:00,365 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 01:01:00,366 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 01:01:00,447 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 01:01:00,448 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 01:01:00,448 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 01:01:00,449 INFO L158 Benchmark]: Toolchain (without parser) took 10414.99ms. Allocated memory was 161.5MB in the beginning and 262.1MB in the end (delta: 100.7MB). Free memory was 119.1MB in the beginning and 127.5MB in the end (delta: -8.5MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. [2023-11-12 01:01:00,449 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:01:00,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.28ms. Allocated memory is still 161.5MB. Free memory was 119.1MB in the beginning and 98.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 01:01:00,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.04ms. Allocated memory is still 161.5MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 01:01:00,450 INFO L158 Benchmark]: Boogie Preprocessor took 47.28ms. Allocated memory is still 161.5MB. Free memory was 96.6MB in the beginning and 95.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:01:00,451 INFO L158 Benchmark]: RCFGBuilder took 557.67ms. Allocated memory is still 161.5MB. Free memory was 95.1MB in the beginning and 79.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 01:01:00,451 INFO L158 Benchmark]: TraceAbstraction took 9031.83ms. Allocated memory was 161.5MB in the beginning and 262.1MB in the end (delta: 100.7MB). Free memory was 79.2MB in the beginning and 131.7MB in the end (delta: -52.5MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2023-11-12 01:01:00,452 INFO L158 Benchmark]: Witness Printer took 97.31ms. Allocated memory is still 262.1MB. Free memory was 131.7MB in the beginning and 127.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 01:01:00,454 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 161.5MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.28ms. Allocated memory is still 161.5MB. Free memory was 119.1MB in the beginning and 98.7MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.04ms. Allocated memory is still 161.5MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.28ms. Allocated memory is still 161.5MB. Free memory was 96.6MB in the beginning and 95.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 557.67ms. Allocated memory is still 161.5MB. Free memory was 95.1MB in the beginning and 79.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9031.83ms. Allocated memory was 161.5MB in the beginning and 262.1MB in the end (delta: 100.7MB). Free memory was 79.2MB in the beginning and 131.7MB in the end (delta: -52.5MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Witness Printer took 97.31ms. Allocated memory is still 262.1MB. Free memory was 131.7MB in the beginning and 127.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 109 PlacesBefore, 38 PlacesAfterwards, 102 TransitionsBefore, 29 TransitionsAfterwards, 1858 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 108 TotalNumberOfCompositions, 3372 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2012, independent: 1925, independent conditional: 0, independent unconditional: 1925, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1323, independent: 1286, independent conditional: 0, independent unconditional: 1286, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1323, independent: 1279, independent conditional: 0, independent unconditional: 1279, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2012, independent: 639, independent conditional: 0, independent unconditional: 639, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 1323, unknown conditional: 0, unknown unconditional: 1323] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 773]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 249 mSDsluCounter, 127 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 785 IncrementalHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 43 mSDtfsCounter, 785 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328occurred in iteration=6, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 318 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 1039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 01:01:00,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0815a8a0-3f90-433d-aba5-cfbbb720ec03/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE