./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ --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 7ff9a02e3a4860dd4559a47ff1369af4fea93a232a0eb144fdecc9bc5971fe5b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:13:51,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:13:52,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:13:52,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:13:52,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:13:52,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:13:52,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:13:52,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:13:52,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:13:52,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:13:52,098 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:13:52,099 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:13:52,100 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:13:52,101 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:13:52,101 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:13:52,102 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:13:52,103 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:13:52,104 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:13:52,104 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:13:52,105 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:13:52,106 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:13:52,107 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:13:52,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:13:52,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:13:52,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:13:52,110 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:13:52,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:13:52,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:13:52,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:13:52,112 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:13:52,113 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:13:52,113 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:13:52,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:13:52,114 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:13:52,115 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:13:52,116 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:13:52,116 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:13:52,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:13:52,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:13:52,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:52,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:13:52,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:13:52,119 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:13:52,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:13:52,120 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:13:52,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:13:52,121 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_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ff9a02e3a4860dd4559a47ff1369af4fea93a232a0eb144fdecc9bc5971fe5b [2023-11-19 05:13:52,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:13:52,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:13:52,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:13:52,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:13:52,508 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:13:52,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-wmm/safe014_power.oepc.i [2023-11-19 05:13:56,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:13:56,711 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:13:56,711 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/sv-benchmarks/c/pthread-wmm/safe014_power.oepc.i [2023-11-19 05:13:56,738 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/data/a8bc01ad5/4aced68345444211b27d28516f01bd9b/FLAG589ce9c89 [2023-11-19 05:13:56,753 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/data/a8bc01ad5/4aced68345444211b27d28516f01bd9b [2023-11-19 05:13:56,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:13:56,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:13:56,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:56,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:13:56,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:13:56,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:56" (1/1) ... [2023-11-19 05:13:56,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55faddd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:56, skipping insertion in model container [2023-11-19 05:13:56,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:56" (1/1) ... [2023-11-19 05:13:56,817 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:13:57,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:57,338 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:13:57,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:57,487 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:57,487 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:57,495 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:13:57,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57 WrapperNode [2023-11-19 05:13:57,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:57,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:57,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:13:57,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:13:57,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,607 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2023-11-19 05:13:57,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:57,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:13:57,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:13:57,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:13:57,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:13:57,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:13:57,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:13:57,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:13:57,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (1/1) ... [2023-11-19 05:13:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:57,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:57,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:13:57,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f944f6e6-e4e5-4ab6-8c0a-39893143e35c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:13:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:13:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:13:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:13:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:13:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:13:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:13:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 05:13:57,876 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 05:13:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 05:13:57,877 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 05:13:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 05:13:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 05:13:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:13:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:13:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:13:57,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:13:57,881 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:13:58,137 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:13:58,140 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:13:58,754 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:13:59,375 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:13:59,375 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:13:59,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:59 BoogieIcfgContainer [2023-11-19 05:13:59,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:13:59,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:13:59,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:13:59,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:13:59,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:13:56" (1/3) ... [2023-11-19 05:13:59,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e03488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:59, skipping insertion in model container [2023-11-19 05:13:59,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:57" (2/3) ... [2023-11-19 05:13:59,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e03488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:59, skipping insertion in model container [2023-11-19 05:13:59,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:59" (3/3) ... [2023-11-19 05:13:59,403 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_power.oepc.i [2023-11-19 05:13:59,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:13:59,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-19 05:13:59,432 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:13:59,612 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:13:59,687 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:13:59,722 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 179 transitions, 370 flow [2023-11-19 05:13:59,729 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 179 transitions, 370 flow [2023-11-19 05:13:59,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 179 transitions, 370 flow [2023-11-19 05:13:59,893 INFO L124 PetriNetUnfolderBase]: 10/176 cut-off events. [2023-11-19 05:13:59,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:13:59,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 176 events. 10/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 251 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 119. Up to 2 conditions per place. [2023-11-19 05:13:59,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 6928 [2023-11-19 05:14:23,800 INFO L134 LiptonReduction]: Checked pairs total: 20255 [2023-11-19 05:14:23,801 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-11-19 05:14:23,811 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 64 transitions, 140 flow [2023-11-19 05:14:24,543 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 13680 states, 12540 states have (on average 3.893859649122807) internal successors, (48829), 13679 states have internal predecessors, (48829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:24,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:14:24,572 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;@65a8c12f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:14:24,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-19 05:14:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 13680 states, 12540 states have (on average 3.893859649122807) internal successors, (48829), 13679 states have internal predecessors, (48829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:24,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-19 05:14:24,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:24,630 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-19 05:14:24,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:24,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash 999, now seen corresponding path program 1 times [2023-11-19 05:14:24,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:24,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43813951] [2023-11-19 05:14:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:24,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:24,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43813951] [2023-11-19 05:14:24,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43813951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:24,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:24,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 05:14:24,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986445521] [2023-11-19 05:14:24,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:24,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:14:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:24,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:14:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:14:24,925 INFO L87 Difference]: Start difference. First operand has 13680 states, 12540 states have (on average 3.893859649122807) internal successors, (48829), 13679 states have internal predecessors, (48829), 0 states have call successors, (0), 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) [2023-11-19 05:14:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:25,257 INFO L93 Difference]: Finished difference Result 3308 states and 11165 transitions. [2023-11-19 05:14:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:14:25,273 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 [2023-11-19 05:14:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:25,365 INFO L225 Difference]: With dead ends: 3308 [2023-11-19 05:14:25,366 INFO L226 Difference]: Without dead ends: 3308 [2023-11-19 05:14:25,368 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 [2023-11-19 05:14:25,374 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:25,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2023-11-19 05:14:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3308. [2023-11-19 05:14:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3174 states have (on average 3.517643352236925) internal successors, (11165), 3307 states have internal predecessors, (11165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 11165 transitions. [2023-11-19 05:14:25,758 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 11165 transitions. Word has length 1 [2023-11-19 05:14:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:25,759 INFO L495 AbstractCegarLoop]: Abstraction has 3308 states and 11165 transitions. [2023-11-19 05:14:25,759 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) [2023-11-19 05:14:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 11165 transitions. [2023-11-19 05:14:25,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:14:25,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:25,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:14:25,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:14:25,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:25,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 983990, now seen corresponding path program 1 times [2023-11-19 05:14:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871560281] [2023-11-19 05:14:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:26,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871560281] [2023-11-19 05:14:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871560281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:26,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:14:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160980502] [2023-11-19 05:14:26,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:26,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:26,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:26,159 INFO L87 Difference]: Start difference. First operand 3308 states and 11165 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:26,368 INFO L93 Difference]: Finished difference Result 2549 states and 8024 transitions. [2023-11-19 05:14:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:26,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:14:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:26,405 INFO L225 Difference]: With dead ends: 2549 [2023-11-19 05:14:26,406 INFO L226 Difference]: Without dead ends: 2525 [2023-11-19 05:14:26,407 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 [2023-11-19 05:14:26,409 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:26,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2023-11-19 05:14:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2197. [2023-11-19 05:14:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2148 states have (on average 3.357541899441341) internal successors, (7212), 2196 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 7212 transitions. [2023-11-19 05:14:26,545 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 7212 transitions. Word has length 3 [2023-11-19 05:14:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:26,547 INFO L495 AbstractCegarLoop]: Abstraction has 2197 states and 7212 transitions. [2023-11-19 05:14:26,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 7212 transitions. [2023-11-19 05:14:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:14:26,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:26,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:14:26,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:14:26,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:26,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash 983991, now seen corresponding path program 1 times [2023-11-19 05:14:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:26,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723466465] [2023-11-19 05:14:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:26,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:26,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723466465] [2023-11-19 05:14:26,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723466465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:26,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:26,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:14:26,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660616084] [2023-11-19 05:14:26,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:26,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:26,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:26,745 INFO L87 Difference]: Start difference. First operand 2197 states and 7212 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:26,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:26,855 INFO L93 Difference]: Finished difference Result 1422 states and 4479 transitions. [2023-11-19 05:14:26,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:26,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:14:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:26,873 INFO L225 Difference]: With dead ends: 1422 [2023-11-19 05:14:26,873 INFO L226 Difference]: Without dead ends: 1398 [2023-11-19 05:14:26,873 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 [2023-11-19 05:14:26,875 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:26,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-11-19 05:14:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1398. [2023-11-19 05:14:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1380 states have (on average 3.21231884057971) internal successors, (4433), 1397 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4433 transitions. [2023-11-19 05:14:26,940 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4433 transitions. Word has length 3 [2023-11-19 05:14:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:26,940 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 4433 transitions. [2023-11-19 05:14:26,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4433 transitions. [2023-11-19 05:14:26,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:14:26,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:26,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:26,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:14:26,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:26,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1448272551, now seen corresponding path program 1 times [2023-11-19 05:14:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:26,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014159457] [2023-11-19 05:14:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:26,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:27,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014159457] [2023-11-19 05:14:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014159457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:27,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:27,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:14:27,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831729241] [2023-11-19 05:14:27,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:27,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:27,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:27,132 INFO L87 Difference]: Start difference. First operand 1398 states and 4433 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2023-11-19 05:14:27,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:27,262 INFO L93 Difference]: Finished difference Result 1358 states and 4291 transitions. [2023-11-19 05:14:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:27,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2023-11-19 05:14:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:27,278 INFO L225 Difference]: With dead ends: 1358 [2023-11-19 05:14:27,278 INFO L226 Difference]: Without dead ends: 1358 [2023-11-19 05:14:27,279 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 [2023-11-19 05:14:27,280 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:27,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2023-11-19 05:14:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1358. [2023-11-19 05:14:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1340 states have (on average 3.202238805970149) internal successors, (4291), 1357 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4291 transitions. [2023-11-19 05:14:27,339 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4291 transitions. Word has length 10 [2023-11-19 05:14:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:27,340 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 4291 transitions. [2023-11-19 05:14:27,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2023-11-19 05:14:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4291 transitions. [2023-11-19 05:14:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:14:27,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:27,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:14:27,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:27,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash 342897026, now seen corresponding path program 1 times [2023-11-19 05:14:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250591116] [2023-11-19 05:14:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:27,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250591116] [2023-11-19 05:14:27,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250591116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:27,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:27,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452820206] [2023-11-19 05:14:27,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:27,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:14:27,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:27,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:14:27,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:14:27,674 INFO L87 Difference]: Start difference. First operand 1358 states and 4291 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) 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) [2023-11-19 05:14:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:27,838 INFO L93 Difference]: Finished difference Result 1298 states and 4098 transitions. [2023-11-19 05:14:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:27,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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 [2023-11-19 05:14:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:27,853 INFO L225 Difference]: With dead ends: 1298 [2023-11-19 05:14:27,854 INFO L226 Difference]: Without dead ends: 1298 [2023-11-19 05:14:27,854 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 [2023-11-19 05:14:27,855 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:27,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-19 05:14:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2023-11-19 05:14:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1281 states have (on average 3.199063231850117) internal successors, (4098), 1297 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4098 transitions. [2023-11-19 05:14:27,925 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 4098 transitions. Word has length 11 [2023-11-19 05:14:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:27,926 INFO L495 AbstractCegarLoop]: Abstraction has 1298 states and 4098 transitions. [2023-11-19 05:14:27,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) 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) [2023-11-19 05:14:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 4098 transitions. [2023-11-19 05:14:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:14:27,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:27,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:27,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:14:27,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:27,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 342897027, now seen corresponding path program 1 times [2023-11-19 05:14:27,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:27,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821517743] [2023-11-19 05:14:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:28,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:28,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821517743] [2023-11-19 05:14:28,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821517743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:28,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:28,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:28,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724962960] [2023-11-19 05:14:28,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:28,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:14:28,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:14:28,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:28,575 INFO L87 Difference]: Start difference. First operand 1298 states and 4098 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) [2023-11-19 05:14:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:28,767 INFO L93 Difference]: Finished difference Result 1490 states and 4526 transitions. [2023-11-19 05:14:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:14:28,768 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 [2023-11-19 05:14:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:28,802 INFO L225 Difference]: With dead ends: 1490 [2023-11-19 05:14:28,802 INFO L226 Difference]: Without dead ends: 1490 [2023-11-19 05:14:28,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:28,804 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 57 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:28,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:14:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2023-11-19 05:14:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1238. [2023-11-19 05:14:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1222 states have (on average 3.195581014729951) internal successors, (3905), 1237 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 3905 transitions. [2023-11-19 05:14:28,852 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 3905 transitions. Word has length 11 [2023-11-19 05:14:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:28,852 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 3905 transitions. [2023-11-19 05:14:28,852 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) [2023-11-19 05:14:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 3905 transitions. [2023-11-19 05:14:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:14:28,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:28,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:28,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:14:28,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:28,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1946775833, now seen corresponding path program 1 times [2023-11-19 05:14:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:28,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774901486] [2023-11-19 05:14:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:29,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:29,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774901486] [2023-11-19 05:14:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774901486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:29,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:29,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:14:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366059641] [2023-11-19 05:14:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:29,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:29,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:29,152 INFO L87 Difference]: Start difference. First operand 1238 states and 3905 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:29,278 INFO L93 Difference]: Finished difference Result 1234 states and 3890 transitions. [2023-11-19 05:14:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:14:29,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:29,307 INFO L225 Difference]: With dead ends: 1234 [2023-11-19 05:14:29,307 INFO L226 Difference]: Without dead ends: 1234 [2023-11-19 05:14:29,308 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 [2023-11-19 05:14:29,309 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:29,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-11-19 05:14:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2023-11-19 05:14:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1218 states have (on average 3.19376026272578) internal successors, (3890), 1233 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 3890 transitions. [2023-11-19 05:14:29,365 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 3890 transitions. Word has length 11 [2023-11-19 05:14:29,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:29,366 INFO L495 AbstractCegarLoop]: Abstraction has 1234 states and 3890 transitions. [2023-11-19 05:14:29,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 3890 transitions. [2023-11-19 05:14:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:14:29,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:29,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:14:29,373 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:29,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2039872926, now seen corresponding path program 1 times [2023-11-19 05:14:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:29,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444820036] [2023-11-19 05:14:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:29,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:29,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:29,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444820036] [2023-11-19 05:14:29,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444820036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:29,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:29,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:14:29,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829082151] [2023-11-19 05:14:29,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:29,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:29,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:29,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:29,833 INFO L87 Difference]: Start difference. First operand 1234 states and 3890 transitions. Second operand has 3 states, 2 states have (on average 6.0) 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) [2023-11-19 05:14:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:29,947 INFO L93 Difference]: Finished difference Result 1222 states and 3849 transitions. [2023-11-19 05:14:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) 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 [2023-11-19 05:14:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:29,990 INFO L225 Difference]: With dead ends: 1222 [2023-11-19 05:14:29,990 INFO L226 Difference]: Without dead ends: 1222 [2023-11-19 05:14:29,990 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 [2023-11-19 05:14:29,993 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:29,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2023-11-19 05:14:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2023-11-19 05:14:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1206 states have (on average 3.191542288557214) internal successors, (3849), 1221 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 3849 transitions. [2023-11-19 05:14:30,045 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 3849 transitions. Word has length 12 [2023-11-19 05:14:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:30,047 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 3849 transitions. [2023-11-19 05:14:30,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) 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) [2023-11-19 05:14:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 3849 transitions. [2023-11-19 05:14:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:14:30,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:30,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:30,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:14:30,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:30,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:30,051 INFO L85 PathProgramCache]: Analyzing trace with hash 220467936, now seen corresponding path program 1 times [2023-11-19 05:14:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:30,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522141769] [2023-11-19 05:14:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:30,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:30,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:30,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522141769] [2023-11-19 05:14:30,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522141769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:30,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:30,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:14:30,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084557138] [2023-11-19 05:14:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:30,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:30,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:30,323 INFO L87 Difference]: Start difference. First operand 1222 states and 3849 transitions. Second operand has 3 states, 2 states have (on average 6.0) 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) [2023-11-19 05:14:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:30,451 INFO L93 Difference]: Finished difference Result 1206 states and 3793 transitions. [2023-11-19 05:14:30,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:30,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) 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 [2023-11-19 05:14:30,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:30,463 INFO L225 Difference]: With dead ends: 1206 [2023-11-19 05:14:30,464 INFO L226 Difference]: Without dead ends: 1206 [2023-11-19 05:14:30,464 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 [2023-11-19 05:14:30,465 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:30,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2023-11-19 05:14:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1206. [2023-11-19 05:14:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1190 states have (on average 3.187394957983193) internal successors, (3793), 1205 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 3793 transitions. [2023-11-19 05:14:30,515 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 3793 transitions. Word has length 12 [2023-11-19 05:14:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:30,516 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 3793 transitions. [2023-11-19 05:14:30,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) 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) [2023-11-19 05:14:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 3793 transitions. [2023-11-19 05:14:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:14:30,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:30,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:30,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 05:14:30,518 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:30,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:30,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1584197024, now seen corresponding path program 1 times [2023-11-19 05:14:30,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:30,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862343583] [2023-11-19 05:14:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:30,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:30,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:30,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862343583] [2023-11-19 05:14:30,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862343583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:30,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:30,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966405363] [2023-11-19 05:14:30,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:30,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:14:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:30,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:14:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:14:30,797 INFO L87 Difference]: Start difference. First operand 1206 states and 3793 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2023-11-19 05:14:30,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:30,996 INFO L93 Difference]: Finished difference Result 1202 states and 3778 transitions. [2023-11-19 05:14:30,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:14:30,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2023-11-19 05:14:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:31,005 INFO L225 Difference]: With dead ends: 1202 [2023-11-19 05:14:31,005 INFO L226 Difference]: Without dead ends: 1202 [2023-11-19 05:14:31,005 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 [2023-11-19 05:14:31,006 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:31,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:14:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2023-11-19 05:14:31,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2023-11-19 05:14:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1186 states have (on average 3.1854974704890386) internal successors, (3778), 1201 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 3778 transitions. [2023-11-19 05:14:31,055 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 3778 transitions. Word has length 13 [2023-11-19 05:14:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:31,056 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 3778 transitions. [2023-11-19 05:14:31,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2023-11-19 05:14:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 3778 transitions. [2023-11-19 05:14:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:14:31,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:31,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:31,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 05:14:31,058 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:31,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1754160161, now seen corresponding path program 1 times [2023-11-19 05:14:31,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:31,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214730732] [2023-11-19 05:14:31,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:31,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:31,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:31,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214730732] [2023-11-19 05:14:31,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214730732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:31,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:31,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:31,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744144206] [2023-11-19 05:14:31,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:14:31,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:14:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:31,326 INFO L87 Difference]: Start difference. First operand 1202 states and 3778 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:31,472 INFO L93 Difference]: Finished difference Result 1298 states and 3870 transitions. [2023-11-19 05:14:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:14:31,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 05:14:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:31,481 INFO L225 Difference]: With dead ends: 1298 [2023-11-19 05:14:31,481 INFO L226 Difference]: Without dead ends: 1298 [2023-11-19 05:14:31,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:31,482 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:31,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-19 05:14:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1070. [2023-11-19 05:14:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1054 states have (on average 3.148956356736243) internal successors, (3319), 1069 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 3319 transitions. [2023-11-19 05:14:31,529 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 3319 transitions. Word has length 13 [2023-11-19 05:14:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:31,529 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 3319 transitions. [2023-11-19 05:14:31,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 3319 transitions. [2023-11-19 05:14:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:14:31,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:31,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:14:31,532 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash 856190181, now seen corresponding path program 1 times [2023-11-19 05:14:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188874986] [2023-11-19 05:14:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:31,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:31,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188874986] [2023-11-19 05:14:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188874986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:31,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344936338] [2023-11-19 05:14:31,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:31,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:14:31,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:14:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:14:31,857 INFO L87 Difference]: Start difference. First operand 1070 states and 3319 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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) [2023-11-19 05:14:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:32,132 INFO L93 Difference]: Finished difference Result 1658 states and 5094 transitions. [2023-11-19 05:14:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:14:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 [2023-11-19 05:14:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:32,142 INFO L225 Difference]: With dead ends: 1658 [2023-11-19 05:14:32,143 INFO L226 Difference]: Without dead ends: 1658 [2023-11-19 05:14:32,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:32,144 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:32,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 7 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:14:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-11-19 05:14:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1202. [2023-11-19 05:14:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1186 states have (on average 3.148397976391231) internal successors, (3734), 1201 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 3734 transitions. [2023-11-19 05:14:32,197 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 3734 transitions. Word has length 14 [2023-11-19 05:14:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:32,198 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 3734 transitions. [2023-11-19 05:14:32,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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) [2023-11-19 05:14:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 3734 transitions. [2023-11-19 05:14:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:14:32,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:32,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:32,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 05:14:32,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:32,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1720188224, now seen corresponding path program 1 times [2023-11-19 05:14:32,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:32,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839602571] [2023-11-19 05:14:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:32,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:32,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839602571] [2023-11-19 05:14:32,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839602571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:32,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:32,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:14:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55579692] [2023-11-19 05:14:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:32,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:32,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:32,578 INFO L87 Difference]: Start difference. First operand 1202 states and 3734 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2023-11-19 05:14:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:32,704 INFO L93 Difference]: Finished difference Result 1194 states and 3708 transitions. [2023-11-19 05:14:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:32,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 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 [2023-11-19 05:14:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:32,711 INFO L225 Difference]: With dead ends: 1194 [2023-11-19 05:14:32,712 INFO L226 Difference]: Without dead ends: 1194 [2023-11-19 05:14:32,712 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 [2023-11-19 05:14:32,713 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:32,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2023-11-19 05:14:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2023-11-19 05:14:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1178 states have (on average 3.1477079796264857) internal successors, (3708), 1193 states have internal predecessors, (3708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 3708 transitions. [2023-11-19 05:14:32,758 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 3708 transitions. Word has length 14 [2023-11-19 05:14:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:32,759 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 3708 transitions. [2023-11-19 05:14:32,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2023-11-19 05:14:32,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 3708 transitions. [2023-11-19 05:14:32,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:14:32,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:32,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:32,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 05:14:32,762 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:32,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:32,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1455606557, now seen corresponding path program 1 times [2023-11-19 05:14:32,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:32,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570104150] [2023-11-19 05:14:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:32,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:33,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:33,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570104150] [2023-11-19 05:14:33,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570104150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:33,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:14:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754083883] [2023-11-19 05:14:33,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:14:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:14:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:14:33,269 INFO L87 Difference]: Start difference. First operand 1194 states and 3708 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2023-11-19 05:14:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:33,684 INFO L93 Difference]: Finished difference Result 982 states and 2985 transitions. [2023-11-19 05:14:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:14:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2023-11-19 05:14:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:33,689 INFO L225 Difference]: With dead ends: 982 [2023-11-19 05:14:33,689 INFO L226 Difference]: Without dead ends: 856 [2023-11-19 05:14:33,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:14:33,690 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:33,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:14:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2023-11-19 05:14:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2023-11-19 05:14:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 848 states have (on average 2.9445754716981134) internal successors, (2497), 855 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 2497 transitions. [2023-11-19 05:14:33,719 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 2497 transitions. Word has length 14 [2023-11-19 05:14:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:33,719 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 2497 transitions. [2023-11-19 05:14:33,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2023-11-19 05:14:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 2497 transitions. [2023-11-19 05:14:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:14:33,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:33,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:33,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 05:14:33,722 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:33,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1455606497, now seen corresponding path program 1 times [2023-11-19 05:14:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789932958] [2023-11-19 05:14:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:33,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:33,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789932958] [2023-11-19 05:14:33,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789932958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:33,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:33,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:14:33,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217191801] [2023-11-19 05:14:33,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:33,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:14:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:14:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:14:33,999 INFO L87 Difference]: Start difference. First operand 856 states and 2497 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2023-11-19 05:14:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:34,249 INFO L93 Difference]: Finished difference Result 816 states and 2263 transitions. [2023-11-19 05:14:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:14:34,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2023-11-19 05:14:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:34,254 INFO L225 Difference]: With dead ends: 816 [2023-11-19 05:14:34,255 INFO L226 Difference]: Without dead ends: 816 [2023-11-19 05:14:34,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:14:34,258 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:34,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:14:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-19 05:14:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 724. [2023-11-19 05:14:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 716 states have (on average 2.874301675977654) internal successors, (2058), 723 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2058 transitions. [2023-11-19 05:14:34,295 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2058 transitions. Word has length 14 [2023-11-19 05:14:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:34,295 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 2058 transitions. [2023-11-19 05:14:34,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2023-11-19 05:14:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2058 transitions. [2023-11-19 05:14:34,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:14:34,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:34,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:34,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 05:14:34,299 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:34,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1481403419, now seen corresponding path program 1 times [2023-11-19 05:14:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791173503] [2023-11-19 05:14:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:36,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791173503] [2023-11-19 05:14:36,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791173503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:36,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:36,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:14:36,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765047429] [2023-11-19 05:14:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:36,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:14:36,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:14:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:14:36,698 INFO L87 Difference]: Start difference. First operand 724 states and 2058 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:37,176 INFO L93 Difference]: Finished difference Result 955 states and 2773 transitions. [2023-11-19 05:14:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:14:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:14:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:37,181 INFO L225 Difference]: With dead ends: 955 [2023-11-19 05:14:37,181 INFO L226 Difference]: Without dead ends: 955 [2023-11-19 05:14:37,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:14:37,182 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 60 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:37,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 4 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:14:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-11-19 05:14:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 820. [2023-11-19 05:14:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 812 states have (on average 2.9088669950738915) internal successors, (2362), 819 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2362 transitions. [2023-11-19 05:14:37,214 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2362 transitions. Word has length 15 [2023-11-19 05:14:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:37,215 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 2362 transitions. [2023-11-19 05:14:37,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2362 transitions. [2023-11-19 05:14:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:14:37,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:37,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:37,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 05:14:37,218 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:37,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1125744881, now seen corresponding path program 2 times [2023-11-19 05:14:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237191976] [2023-11-19 05:14:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:38,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237191976] [2023-11-19 05:14:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237191976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:38,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:14:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547068813] [2023-11-19 05:14:38,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:38,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:14:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:38,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:14:38,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:14:38,775 INFO L87 Difference]: Start difference. First operand 820 states and 2362 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:39,255 INFO L93 Difference]: Finished difference Result 826 states and 2360 transitions. [2023-11-19 05:14:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:14:39,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:14:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:39,259 INFO L225 Difference]: With dead ends: 826 [2023-11-19 05:14:39,259 INFO L226 Difference]: Without dead ends: 826 [2023-11-19 05:14:39,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-19 05:14:39,260 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 80 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:39,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 5 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:14:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-11-19 05:14:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 718. [2023-11-19 05:14:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 710 states have (on average 2.871830985915493) internal successors, (2039), 717 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2039 transitions. [2023-11-19 05:14:39,284 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2039 transitions. Word has length 15 [2023-11-19 05:14:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:39,285 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 2039 transitions. [2023-11-19 05:14:39,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2039 transitions. [2023-11-19 05:14:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:14:39,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:39,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:39,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 05:14:39,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:39,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2120835358, now seen corresponding path program 1 times [2023-11-19 05:14:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169528899] [2023-11-19 05:14:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:39,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169528899] [2023-11-19 05:14:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169528899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:39,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521845092] [2023-11-19 05:14:39,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:39,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:14:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:39,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:14:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:14:39,399 INFO L87 Difference]: Start difference. First operand 718 states and 2039 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:39,482 INFO L93 Difference]: Finished difference Result 730 states and 2116 transitions. [2023-11-19 05:14:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:14:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:14:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:39,484 INFO L225 Difference]: With dead ends: 730 [2023-11-19 05:14:39,484 INFO L226 Difference]: Without dead ends: 320 [2023-11-19 05:14:39,485 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 [2023-11-19 05:14:39,485 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:39,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-19 05:14:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-11-19 05:14:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 2.802507836990596) internal successors, (894), 319 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 894 transitions. [2023-11-19 05:14:39,496 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 894 transitions. Word has length 15 [2023-11-19 05:14:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:39,496 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 894 transitions. [2023-11-19 05:14:39,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 894 transitions. [2023-11-19 05:14:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:14:39,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:39,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:39,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 05:14:39,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:39,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1321246124, now seen corresponding path program 1 times [2023-11-19 05:14:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:39,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99091067] [2023-11-19 05:14:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:39,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99091067] [2023-11-19 05:14:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99091067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:39,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:39,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:39,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716730062] [2023-11-19 05:14:39,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:39,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:39,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:39,757 INFO L87 Difference]: Start difference. First operand 320 states and 894 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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) [2023-11-19 05:14:39,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:39,836 INFO L93 Difference]: Finished difference Result 244 states and 596 transitions. [2023-11-19 05:14:39,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:39,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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 [2023-11-19 05:14:39,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:39,838 INFO L225 Difference]: With dead ends: 244 [2023-11-19 05:14:39,838 INFO L226 Difference]: Without dead ends: 244 [2023-11-19 05:14:39,839 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 [2023-11-19 05:14:39,839 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:39,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-19 05:14:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2023-11-19 05:14:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.4526748971193415) internal successors, (596), 243 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 596 transitions. [2023-11-19 05:14:39,850 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 596 transitions. Word has length 16 [2023-11-19 05:14:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:39,850 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 596 transitions. [2023-11-19 05:14:39,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 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) [2023-11-19 05:14:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 596 transitions. [2023-11-19 05:14:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:14:39,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:39,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:39,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 05:14:39,853 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:39,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:39,853 INFO L85 PathProgramCache]: Analyzing trace with hash -297340850, now seen corresponding path program 1 times [2023-11-19 05:14:39,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:39,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959783477] [2023-11-19 05:14:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:40,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:40,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959783477] [2023-11-19 05:14:40,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959783477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:40,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:40,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:40,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026850647] [2023-11-19 05:14:40,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:40,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:14:40,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:40,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:14:40,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:14:40,156 INFO L87 Difference]: Start difference. First operand 244 states and 596 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:40,256 INFO L93 Difference]: Finished difference Result 170 states and 376 transitions. [2023-11-19 05:14:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:14:40,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-19 05:14:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:40,257 INFO L225 Difference]: With dead ends: 170 [2023-11-19 05:14:40,257 INFO L226 Difference]: Without dead ends: 170 [2023-11-19 05:14:40,258 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 [2023-11-19 05:14:40,258 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:40,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-19 05:14:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-19 05:14:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.224852071005917) internal successors, (376), 169 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 376 transitions. [2023-11-19 05:14:40,264 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 376 transitions. Word has length 17 [2023-11-19 05:14:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:40,264 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 376 transitions. [2023-11-19 05:14:40,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 376 transitions. [2023-11-19 05:14:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:14:40,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:40,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:40,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 05:14:40,265 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-19 05:14:40,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:40,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1766392734, now seen corresponding path program 1 times [2023-11-19 05:14:40,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:40,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23971075] [2023-11-19 05:14:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:40,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:40,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:40,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23971075] [2023-11-19 05:14:40,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23971075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:40,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:40,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:14:40,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485422635] [2023-11-19 05:14:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:40,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:14:40,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:14:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:40,500 INFO L87 Difference]: Start difference. First operand 170 states and 376 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)