./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:28:08,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:28:08,173 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:28:08,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:28:08,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:28:08,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:28:08,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:28:08,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:28:08,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:28:08,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:28:08,207 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:28:08,208 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:28:08,208 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:28:08,209 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:28:08,210 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:28:08,210 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:28:08,211 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:28:08,211 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:28:08,212 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:28:08,213 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:28:08,213 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:28:08,214 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:28:08,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:28:08,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:28:08,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:28:08,217 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:28:08,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:28:08,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:28:08,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:28:08,219 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:28:08,219 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:28:08,220 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:28:08,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:28:08,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:28:08,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:28:08,221 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:28:08,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:28:08,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:28:08,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:28:08,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:28:08,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:28:08,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:28:08,223 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:28:08,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:28:08,224 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:28:08,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:28:08,225 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_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b [2023-11-06 20:28:08,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:28:08,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:28:08,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:28:08,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:28:08,546 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:28:08,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2023-11-06 20:28:11,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:28:12,133 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:28:12,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2023-11-06 20:28:12,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/data/5b8e62f9d/29e4ae651d604c92a63c3cd6c0d8c5c4/FLAGf6c308055 [2023-11-06 20:28:12,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/data/5b8e62f9d/29e4ae651d604c92a63c3cd6c0d8c5c4 [2023-11-06 20:28:12,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:28:12,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:28:12,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:28:12,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:28:12,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:28:12,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25405091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12, skipping insertion in model container [2023-11-06 20:28:12,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,263 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:28:12,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:28:12,737 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:28:12,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:28:12,871 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:28:12,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12 WrapperNode [2023-11-06 20:28:12,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:28:12,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:28:12,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:28:12,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:28:12,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,958 INFO L138 Inliner]: procedures = 172, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 164 [2023-11-06 20:28:12,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:28:12,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:28:12,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:28:12,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:28:12,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:12,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:13,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:13,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:13,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:13,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:28:13,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:28:13,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:28:13,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:28:13,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (1/1) ... [2023-11-06 20:28:13,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:28:13,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:28:13,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:28:13,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648a62c2-5aab-46f0-b6f2-b429dd4bc781/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:28:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:28:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 20:28:13,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 20:28:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:28:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:28:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:28:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:28:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:28:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:28:13,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:28:13,130 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:28:13,323 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:28:13,326 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:28:13,791 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:28:14,247 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:28:14,247 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 20:28:14,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:28:14 BoogieIcfgContainer [2023-11-06 20:28:14,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:28:14,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:28:14,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:28:14,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:28:14,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:28:12" (1/3) ... [2023-11-06 20:28:14,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46022666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:28:14, skipping insertion in model container [2023-11-06 20:28:14,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:12" (2/3) ... [2023-11-06 20:28:14,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46022666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:28:14, skipping insertion in model container [2023-11-06 20:28:14,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:28:14" (3/3) ... [2023-11-06 20:28:14,259 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2023-11-06 20:28:14,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:28:14,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2023-11-06 20:28:14,280 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:28:14,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:28:14,485 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:28:14,511 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 142 transitions, 288 flow [2023-11-06 20:28:14,515 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 142 transitions, 288 flow [2023-11-06 20:28:14,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 288 flow [2023-11-06 20:28:14,619 INFO L124 PetriNetUnfolderBase]: 9/158 cut-off events. [2023-11-06 20:28:14,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:28:14,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 158 events. 9/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 571 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-06 20:28:14,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 3914 [2023-11-06 20:28:25,987 INFO L134 LiptonReduction]: Checked pairs total: 6101 [2023-11-06 20:28:25,987 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-11-06 20:28:25,996 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 66 transitions, 136 flow [2023-11-06 20:28:26,044 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 410 states, 213 states have (on average 3.7934272300469485) internal successors, (808), 409 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:28:26,072 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;@7a18c13b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:28:26,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-11-06 20:28:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 213 states have (on average 3.7934272300469485) internal successors, (808), 409 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-06 20:28:26,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:26,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-06 20:28:26,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 20:28:26,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 27508, now seen corresponding path program 1 times [2023-11-06 20:28:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:26,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393791238] [2023-11-06 20:28:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:26,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:26,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393791238] [2023-11-06 20:28:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393791238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:26,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:26,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 20:28:26,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893008167] [2023-11-06 20:28:26,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:26,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:28:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:28:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:28:26,427 INFO L87 Difference]: Start difference. First operand has 410 states, 213 states have (on average 3.7934272300469485) internal successors, (808), 409 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:26,593 INFO L93 Difference]: Finished difference Result 202 states and 377 transitions. [2023-11-06 20:28:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:28:26,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-06 20:28:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:26,614 INFO L225 Difference]: With dead ends: 202 [2023-11-06 20:28:26,615 INFO L226 Difference]: Without dead ends: 202 [2023-11-06 20:28:26,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:28:26,622 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 42 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:26,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 4 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-06 20:28:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2023-11-06 20:28:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 144 states have (on average 2.611111111111111) internal successors, (376), 199 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) [2023-11-06 20:28:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 376 transitions. [2023-11-06 20:28:26,710 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 376 transitions. Word has length 2 [2023-11-06 20:28:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:26,710 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 376 transitions. [2023-11-06 20:28:26,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 376 transitions. [2023-11-06 20:28:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-06 20:28:26,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:26,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-06 20:28:26,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:28:26,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 20:28:26,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:26,715 INFO L85 PathProgramCache]: Analyzing trace with hash 27509, now seen corresponding path program 1 times [2023-11-06 20:28:26,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:26,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173668637] [2023-11-06 20:28:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:26,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:26,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173668637] [2023-11-06 20:28:26,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173668637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 20:28:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12088134] [2023-11-06 20:28:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:28:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:28:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:28:26,874 INFO L87 Difference]: Start difference. First operand 200 states and 376 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:27,022 INFO L93 Difference]: Finished difference Result 160 states and 293 transitions. [2023-11-06 20:28:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:28:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-06 20:28:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:27,028 INFO L225 Difference]: With dead ends: 160 [2023-11-06 20:28:27,028 INFO L226 Difference]: Without dead ends: 160 [2023-11-06 20:28:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:28:27,030 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:27,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-06 20:28:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-06 20:28:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 132 states have (on average 2.2196969696969697) internal successors, (293), 159 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 293 transitions. [2023-11-06 20:28:27,047 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 293 transitions. Word has length 2 [2023-11-06 20:28:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:27,048 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 293 transitions. [2023-11-06 20:28:27,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 293 transitions. [2023-11-06 20:28:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:28:27,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:27,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:28:27,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:28:27,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 20:28:27,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash 820156983, now seen corresponding path program 1 times [2023-11-06 20:28:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:27,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599582459] [2023-11-06 20:28:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:27,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:27,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599582459] [2023-11-06 20:28:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599582459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:27,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:28:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008757012] [2023-11-06 20:28:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:27,289 INFO L87 Difference]: Start difference. First operand 160 states and 293 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:27,430 INFO L93 Difference]: Finished difference Result 144 states and 265 transitions. [2023-11-06 20:28:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:28:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-06 20:28:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:27,432 INFO L225 Difference]: With dead ends: 144 [2023-11-06 20:28:27,434 INFO L226 Difference]: Without dead ends: 144 [2023-11-06 20:28:27,434 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 [2023-11-06 20:28:27,436 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 37 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:27,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-06 20:28:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-06 20:28:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 120 states have (on average 2.2083333333333335) internal successors, (265), 143 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 265 transitions. [2023-11-06 20:28:27,454 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 265 transitions. Word has length 5 [2023-11-06 20:28:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:27,455 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 265 transitions. [2023-11-06 20:28:27,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 265 transitions. [2023-11-06 20:28:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:28:27,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:27,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:28:27,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:28:27,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 20:28:27,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:27,459 INFO L85 PathProgramCache]: Analyzing trace with hash 820156984, now seen corresponding path program 1 times [2023-11-06 20:28:27,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:27,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590489987] [2023-11-06 20:28:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:27,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590489987] [2023-11-06 20:28:27,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590489987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:27,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:27,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:28:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974471037] [2023-11-06 20:28:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:27,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:28:27,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:28:27,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:28:27,673 INFO L87 Difference]: Start difference. First operand 144 states and 265 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:27,794 INFO L93 Difference]: Finished difference Result 128 states and 237 transitions. [2023-11-06 20:28:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:28:27,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-06 20:28:27,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:27,797 INFO L225 Difference]: With dead ends: 128 [2023-11-06 20:28:27,797 INFO L226 Difference]: Without dead ends: 128 [2023-11-06 20:28:27,797 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 [2023-11-06 20:28:27,799 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:27,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-06 20:28:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-06 20:28:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 2.1944444444444446) internal successors, (237), 127 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 237 transitions. [2023-11-06 20:28:27,812 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 237 transitions. Word has length 5 [2023-11-06 20:28:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:27,813 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 237 transitions. [2023-11-06 20:28:27,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 237 transitions. [2023-11-06 20:28:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:28:27,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:27,814 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 20:28:27,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:28:27,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-06 20:28:27,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -345024585, now seen corresponding path program 1 times [2023-11-06 20:28:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:27,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906411769] [2023-11-06 20:28:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:28:27,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 20:28:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:28:27,881 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 20:28:27,881 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 20:28:27,883 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (79 of 80 remaining) [2023-11-06 20:28:27,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 80 remaining) [2023-11-06 20:28:27,886 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 80 remaining) [2023-11-06 20:28:27,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 80 remaining) [2023-11-06 20:28:27,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 80 remaining) [2023-11-06 20:28:27,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 80 remaining) [2023-11-06 20:28:27,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 80 remaining) [2023-11-06 20:28:27,890 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 80 remaining) [2023-11-06 20:28:27,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 80 remaining) [2023-11-06 20:28:27,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (70 of 80 remaining) [2023-11-06 20:28:27,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 80 remaining) [2023-11-06 20:28:27,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 80 remaining) [2023-11-06 20:28:27,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 80 remaining) [2023-11-06 20:28:27,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 80 remaining) [2023-11-06 20:28:27,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (65 of 80 remaining) [2023-11-06 20:28:27,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 80 remaining) [2023-11-06 20:28:27,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 80 remaining) [2023-11-06 20:28:27,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 80 remaining) [2023-11-06 20:28:27,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 80 remaining) [2023-11-06 20:28:27,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 80 remaining) [2023-11-06 20:28:27,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 80 remaining) [2023-11-06 20:28:27,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 80 remaining) [2023-11-06 20:28:27,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 80 remaining) [2023-11-06 20:28:27,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 80 remaining) [2023-11-06 20:28:27,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 80 remaining) [2023-11-06 20:28:27,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 80 remaining) [2023-11-06 20:28:27,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 80 remaining) [2023-11-06 20:28:27,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 80 remaining) [2023-11-06 20:28:27,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 80 remaining) [2023-11-06 20:28:27,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 80 remaining) [2023-11-06 20:28:27,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 80 remaining) [2023-11-06 20:28:27,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 80 remaining) [2023-11-06 20:28:27,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 80 remaining) [2023-11-06 20:28:27,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 80 remaining) [2023-11-06 20:28:27,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 80 remaining) [2023-11-06 20:28:27,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 80 remaining) [2023-11-06 20:28:27,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 80 remaining) [2023-11-06 20:28:27,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 80 remaining) [2023-11-06 20:28:27,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 80 remaining) [2023-11-06 20:28:27,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 80 remaining) [2023-11-06 20:28:27,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 80 remaining) [2023-11-06 20:28:27,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (38 of 80 remaining) [2023-11-06 20:28:27,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 80 remaining) [2023-11-06 20:28:27,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 80 remaining) [2023-11-06 20:28:27,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 80 remaining) [2023-11-06 20:28:27,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 80 remaining) [2023-11-06 20:28:27,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 80 remaining) [2023-11-06 20:28:27,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 80 remaining) [2023-11-06 20:28:27,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 80 remaining) [2023-11-06 20:28:27,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 80 remaining) [2023-11-06 20:28:27,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (29 of 80 remaining) [2023-11-06 20:28:27,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 80 remaining) [2023-11-06 20:28:27,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 80 remaining) [2023-11-06 20:28:27,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 80 remaining) [2023-11-06 20:28:27,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 80 remaining) [2023-11-06 20:28:27,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (24 of 80 remaining) [2023-11-06 20:28:27,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 80 remaining) [2023-11-06 20:28:27,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 80 remaining) [2023-11-06 20:28:27,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 80 remaining) [2023-11-06 20:28:27,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 80 remaining) [2023-11-06 20:28:27,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 80 remaining) [2023-11-06 20:28:27,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 80 remaining) [2023-11-06 20:28:27,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 80 remaining) [2023-11-06 20:28:27,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 80 remaining) [2023-11-06 20:28:27,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 80 remaining) [2023-11-06 20:28:27,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 80 remaining) [2023-11-06 20:28:27,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 80 remaining) [2023-11-06 20:28:27,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 80 remaining) [2023-11-06 20:28:27,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 80 remaining) [2023-11-06 20:28:27,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 80 remaining) [2023-11-06 20:28:27,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 80 remaining) [2023-11-06 20:28:27,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 80 remaining) [2023-11-06 20:28:27,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 80 remaining) [2023-11-06 20:28:27,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 80 remaining) [2023-11-06 20:28:27,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 80 remaining) [2023-11-06 20:28:27,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 80 remaining) [2023-11-06 20:28:27,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 80 remaining) [2023-11-06 20:28:27,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 80 remaining) [2023-11-06 20:28:27,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 80 remaining) [2023-11-06 20:28:27,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 80 remaining) [2023-11-06 20:28:27,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:28:27,925 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 20:28:27,927 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 20:28:27,927 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 20:28:28,055 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:28:28,059 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:28:28,059 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 246 transitions, 502 flow [2023-11-06 20:28:28,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 246 transitions, 502 flow [2023-11-06 20:28:28,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 246 transitions, 502 flow [2023-11-06 20:28:28,131 INFO L124 PetriNetUnfolderBase]: 17/280 cut-off events. [2023-11-06 20:28:28,131 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 20:28:28,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 280 events. 17/280 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1337 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 224. Up to 6 conditions per place. [2023-11-06 20:28:28,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 29252