./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_sync.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_sync.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 459cf049271151c452003a0973bcdcc76c918d5759d842702be03de8528f67ef --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:50:12,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:50:12,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:50:12,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:50:12,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:50:13,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:50:13,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:50:13,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:50:13,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:50:13,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:50:13,055 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:50:13,057 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:50:13,057 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:50:13,059 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:50:13,060 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:50:13,060 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:50:13,061 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:50:13,062 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:50:13,062 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:50:13,063 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:50:13,063 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:50:13,064 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:50:13,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:50:13,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:50:13,067 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:50:13,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:50:13,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:50:13,068 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:50:13,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:50:13,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:50:13,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:50:13,071 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:50:13,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:50:13,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:50:13,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:50:13,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:50:13,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:13,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:50:13,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:50:13,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:50:13,100 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:50:13,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:50:13,101 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:50:13,101 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:50:13,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:50:13,102 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_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 459cf049271151c452003a0973bcdcc76c918d5759d842702be03de8528f67ef [2023-11-12 00:50:13,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:50:13,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:50:13,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:50:13,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:50:13,555 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:50:13,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/seq-pthread/cs_sync.i [2023-11-12 00:50:17,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:50:17,670 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:50:17,670 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/sv-benchmarks/c/seq-pthread/cs_sync.i [2023-11-12 00:50:17,707 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/data/4416f31bc/f701f5ca097c4f2c80af7a2991b4662c/FLAGbd122bf82 [2023-11-12 00:50:17,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/data/4416f31bc/f701f5ca097c4f2c80af7a2991b4662c [2023-11-12 00:50:17,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:50:17,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:50:17,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:17,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:50:17,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:50:17,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:17" (1/1) ... [2023-11-12 00:50:17,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3631a332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:17, skipping insertion in model container [2023-11-12 00:50:17,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:17" (1/1) ... [2023-11-12 00:50:17,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:50:18,406 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/sv-benchmarks/c/seq-pthread/cs_sync.i[34698,34711] [2023-11-12 00:50:18,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:18,621 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:50:18,691 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/sv-benchmarks/c/seq-pthread/cs_sync.i[34698,34711] [2023-11-12 00:50:18,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:18,884 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:50:18,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18 WrapperNode [2023-11-12 00:50:18,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:18,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:18,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:50:18,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:50:18,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:18,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,005 INFO L138 Inliner]: procedures = 245, calls = 244, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 551 [2023-11-12 00:50:19,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:19,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:50:19,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:50:19,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:50:19,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:50:19,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:50:19,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:50:19,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:50:19,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (1/1) ... [2023-11-12 00:50:19,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:19,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:50:19,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:50:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:50:19,321 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:50:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:50:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2023-11-12 00:50:19,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2023-11-12 00:50:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2023-11-12 00:50:19,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2023-11-12 00:50:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:50:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:50:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:50:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2023-11-12 00:50:19,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2023-11-12 00:50:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:50:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2023-11-12 00:50:19,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2023-11-12 00:50:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:50:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:50:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:50:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-11-12 00:50:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-11-12 00:50:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2023-11-12 00:50:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2023-11-12 00:50:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-11-12 00:50:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-11-12 00:50:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-12 00:50:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-12 00:50:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-11-12 00:50:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-11-12 00:50:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:50:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:50:19,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:50:19,608 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:50:19,610 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:50:20,247 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-12 00:50:20,248 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2023-11-12 00:50:20,248 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-12 00:50:20,248 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2023-11-12 00:50:20,249 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L991: SUMMARY for call __CS_cs(); srcloc: null [2023-11-12 00:50:20,249 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2023-11-12 00:50:20,249 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-12 00:50:21,013 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:50:21,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:50:21,267 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 00:50:21,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:21 BoogieIcfgContainer [2023-11-12 00:50:21,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:50:21,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:50:21,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:50:21,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:50:21,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:50:17" (1/3) ... [2023-11-12 00:50:21,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574bf5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:21, skipping insertion in model container [2023-11-12 00:50:21,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:18" (2/3) ... [2023-11-12 00:50:21,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574bf5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:21, skipping insertion in model container [2023-11-12 00:50:21,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:21" (3/3) ... [2023-11-12 00:50:21,288 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_sync.i [2023-11-12 00:50:21,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:50:21,313 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:50:21,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:50:21,404 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7b9d1621, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:50:21,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:50:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 94 states have internal predecessors, (132), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 00:50:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-12 00:50:21,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:21,432 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:21,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:21,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 643413204, now seen corresponding path program 1 times [2023-11-12 00:50:21,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:21,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210705996] [2023-11-12 00:50:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:50:22,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:22,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210705996] [2023-11-12 00:50:22,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210705996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:22,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:22,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252156807] [2023-11-12 00:50:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:22,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:22,518 INFO L87 Difference]: Start difference. First operand has 160 states, 93 states have (on average 1.4193548387096775) internal successors, (132), 94 states have internal predecessors, (132), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:50:24,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:50:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:25,159 INFO L93 Difference]: Finished difference Result 319 states and 486 transitions. [2023-11-12 00:50:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:25,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 50 [2023-11-12 00:50:25,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:25,184 INFO L225 Difference]: With dead ends: 319 [2023-11-12 00:50:25,184 INFO L226 Difference]: Without dead ends: 160 [2023-11-12 00:50:25,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:25,205 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 2 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:25,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 428 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 00:50:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-12 00:50:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2023-11-12 00:50:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 93 states have (on average 1.3763440860215055) internal successors, (128), 93 states have internal predecessors, (128), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 00:50:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 238 transitions. [2023-11-12 00:50:25,325 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 238 transitions. Word has length 50 [2023-11-12 00:50:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:25,326 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 238 transitions. [2023-11-12 00:50:25,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:50:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 238 transitions. [2023-11-12 00:50:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 00:50:25,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:25,344 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:25,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:50:25,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:25,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1885798493, now seen corresponding path program 1 times [2023-11-12 00:50:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:25,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365822254] [2023-11-12 00:50:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:50:25,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365822254] [2023-11-12 00:50:25,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365822254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:50:25,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:50:25,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:50:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311810408] [2023-11-12 00:50:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:50:25,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:50:25,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:25,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:50:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:25,794 INFO L87 Difference]: Start difference. First operand 159 states and 238 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:50:27,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:50:29,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:50:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:30,026 INFO L93 Difference]: Finished difference Result 317 states and 476 transitions. [2023-11-12 00:50:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:50:30,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 52 [2023-11-12 00:50:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:30,031 INFO L225 Difference]: With dead ends: 317 [2023-11-12 00:50:30,031 INFO L226 Difference]: Without dead ends: 160 [2023-11-12 00:50:30,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:50:30,035 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:30,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 427 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2023-11-12 00:50:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-12 00:50:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-12 00:50:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 94 states have (on average 1.372340425531915) internal successors, (129), 94 states have internal predecessors, (129), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 00:50:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 239 transitions. [2023-11-12 00:50:30,062 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 239 transitions. Word has length 52 [2023-11-12 00:50:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:30,062 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 239 transitions. [2023-11-12 00:50:30,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:50:30,063 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 239 transitions. [2023-11-12 00:50:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 00:50:30,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:30,067 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:30,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:50:30,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:30,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2015971326, now seen corresponding path program 1 times [2023-11-12 00:50:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:30,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627051654] [2023-11-12 00:50:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:50:30,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:30,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627051654] [2023-11-12 00:50:30,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627051654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:30,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440622178] [2023-11-12 00:50:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:30,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:30,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:30,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:30,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:50:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:30,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:50:30,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:50:30,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:50:31,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440622178] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [771587173] [2023-11-12 00:50:31,086 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-11-12 00:50:31,086 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:31,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:31,097 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:31,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:59,283 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:51:02,807 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 3 |c_~#__CS_thread_status~0.offset|)) (.cse5 (+ |c_~#m~0.offset| 1)) (.cse1 (+ 5 |c_~#__CS_thread_status~0.offset|)) (.cse6 (+ |c_~#full~0.offset| 1)) (.cse17 (+ |c_~#empty~0.offset| 1)) (.cse3 (+ |c_~#__CS_thread_status~0.offset| 4)) (.cse8 (+ |c_~#num~0.offset| 4)) (.cse10 (+ |c_~#__CS_thread_lockedon~0.offset| 20)) (.cse11 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 20)) (.cse13 (+ |c_~#__CS_thread_lockedon~0.offset| 16)) (.cse14 (+ 16 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse15 (+ |c_~#__CS_thread_lockedon~0.offset| 12)) (.cse16 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 12))) (and (exists ((v_~__CS_thread~0.base_40 (Array Int Int))) (= c_~__CS_thread~0.base (store v_~__CS_thread~0.base_40 0 |#funAddr~main_thread.base|))) (exists ((|v_#memory_$Pointer$.base_152| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_151| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_150| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_280| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_158| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_157| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_154| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_153| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_#memory_$Pointer$.base_153| |c_~#__CS_thread_status~0.base|)) (.cse2 (select |v_#memory_$Pointer$.base_157| |c_~#__CS_thread_status~0.base|))) (and (= (store |v_#memory_$Pointer$.base_150| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.base_150| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.base| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|))) |c_#memory_$Pointer$.base|) (= (store |v_#memory_$Pointer$.base_153| |c_~#__CS_thread_status~0.base| (store .cse0 .cse1 (select (select |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_status~0.base|) .cse1))) |v_#memory_$Pointer$.base_152|) (= (store |v_#memory_$Pointer$.base_158| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.base_158| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.base_151| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|))) |v_#memory_$Pointer$.base_151|) (= (store |v_#memory_$Pointer$.base_157| |c_~#__CS_thread_status~0.base| (store .cse2 .cse3 (select .cse0 .cse3))) |v_#memory_$Pointer$.base_153|) (= (store |v_#memory_$Pointer$.base_280| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_280| |c_~#__CS_thread_status~0.base|) .cse4 (select .cse2 .cse4))) |v_#memory_$Pointer$.base_157|) (= |v_#memory_$Pointer$.base_154| (store |v_#memory_$Pointer$.base_155| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.base_155| |c_~#m~0.base|) .cse5 (select (select |v_#memory_$Pointer$.base_154| |c_~#m~0.base|) .cse5)))) (= |v_#memory_$Pointer$.base_150| (store |v_#memory_$Pointer$.base_151| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_151| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.base_150| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|)))) (= (store |v_#memory_$Pointer$.base_156| |c_~#full~0.base| (store (select |v_#memory_$Pointer$.base_156| |c_~#full~0.base|) .cse6 (select (select |v_#memory_$Pointer$.base_158| |c_~#full~0.base|) .cse6))) |v_#memory_$Pointer$.base_158|) (= (let ((.cse7 (store |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base| (let ((.cse9 (let ((.cse12 (store (select |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base|) .cse15 (select (select |v_#memory_$Pointer$.base_152| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse16)))) (store .cse12 .cse13 (select (select (store |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base| .cse12) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse14))))) (store .cse9 .cse10 (select (select (store |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base| .cse9) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse11)))))) (store .cse7 |c_~#num~0.base| (store (select .cse7 |c_~#num~0.base|) .cse8 (select (select |v_#memory_$Pointer$.base_155| |c_~#num~0.base|) .cse8)))) |v_#memory_$Pointer$.base_155|) (= (store |v_#memory_$Pointer$.base_154| |c_~#empty~0.base| (store (select |v_#memory_$Pointer$.base_154| |c_~#empty~0.base|) .cse17 (select (select |v_#memory_$Pointer$.base_156| |c_~#empty~0.base|) .cse17))) |v_#memory_$Pointer$.base_156|)))) (<= 3 |c_ULTIMATE.start_main_~j~2#1|) (= (select (select |c_#memory_int| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|) |c_ULTIMATE.start_main_#t~mem94#1|) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (exists ((|v_#memory_int_218| (Array Int (Array Int Int))) (|v_#memory_int_137| (Array Int (Array Int Int))) (|v_#memory_int_138| (Array Int (Array Int Int))) (|v_#memory_int_139| (Array Int (Array Int Int)))) (let ((.cse19 (select |v_#memory_int_138| |c_~#__CS_thread_lockedon~0.base|)) (.cse22 (select |v_#memory_int_137| |c_~#__CS_thread_lockedon~0.base|))) (and (= |v_#memory_int_138| (let ((.cse18 (store |v_#memory_int_218| |c_~#__CS_thread_status~0.base| (let ((.cse20 (let ((.cse21 (store (select |v_#memory_int_218| |c_~#__CS_thread_status~0.base|) .cse4 (select (select |v_#memory_int_218| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 3))))) (store .cse21 .cse3 (select (select (store |v_#memory_int_218| |c_~#__CS_thread_status~0.base| .cse21) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 4)))))) (store .cse20 .cse1 (select (select (store |v_#memory_int_218| |c_~#__CS_thread_status~0.base| .cse20) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 5))))))) (store .cse18 |c_~#__CS_thread_lockedon~0.base| (store (select .cse18 |c_~#__CS_thread_lockedon~0.base|) .cse15 (select .cse19 .cse15))))) (= (store |v_#memory_int_137| |c_~#__CS_thread_lockedon~0.base| (store .cse22 .cse10 (select (select |v_#memory_int_139| |c_~#__CS_thread_lockedon~0.base|) .cse10))) |v_#memory_int_139|) (= |c_#memory_int| (let ((.cse23 (let ((.cse24 (let ((.cse25 (let ((.cse26 (let ((.cse27 (let ((.cse28 (store |v_#memory_int_139| |c_~#num~0.base| (store (select |v_#memory_int_139| |c_~#num~0.base|) .cse8 (select (select |v_#memory_int_139| |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.offset| 4)))))) (store .cse28 |c_~#m~0.base| (store (select .cse28 |c_~#m~0.base|) .cse5 (select (select .cse28 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.offset| 1))))))) (store .cse27 |c_~#empty~0.base| (store (select .cse27 |c_~#empty~0.base|) .cse17 (select (select .cse27 |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.offset| 1))))))) (store .cse26 |c_~#full~0.base| (store (select .cse26 |c_~#full~0.base|) .cse6 (select (select .cse26 |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.offset| 1))))))) (store .cse25 |c_~#__CS_thread_born_round~0.base| (store (select .cse25 |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| 0))))) (store .cse24 |c_~#__CS_thread_status~0.base| (store (select .cse24 |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| c_~__THREAD_RUNNING~0))))) (store .cse23 |c_~#__CS_thread_allocated~0.base| (store (select .cse23 |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| 1)))) (= (store |v_#memory_int_138| |c_~#__CS_thread_lockedon~0.base| (store .cse19 .cse13 (select .cse22 .cse13))) |v_#memory_int_137|)))) (exists ((|v_#memory_$Pointer$.offset_280| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_150| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_151| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_152| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_153| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_154| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_157| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_158| (Array Int (Array Int Int)))) (let ((.cse29 (select |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base|)) (.cse30 (select |v_#memory_$Pointer$.offset_156| |c_~#__CS_thread_status~0.base|))) (and (= |v_#memory_$Pointer$.offset_158| (store |v_#memory_$Pointer$.offset_151| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.offset_151| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.offset_158| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|)))) (= |v_#memory_$Pointer$.offset_150| (store |v_#memory_$Pointer$.offset_280| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_280| |c_~#__CS_thread_status~0.base|) .cse4 (select .cse29 .cse4)))) (= (store |v_#memory_$Pointer$.offset_154| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.offset_154| |c_~#m~0.base|) .cse5 (select (select |v_#memory_$Pointer$.offset_153| |c_~#m~0.base|) .cse5))) |v_#memory_$Pointer$.offset_153|) (= |c_#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_157| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.offset_157| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.offset| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|)))) (= (store |v_#memory_$Pointer$.offset_158| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_158| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.offset_157| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|))) |v_#memory_$Pointer$.offset_157|) (= |v_#memory_$Pointer$.offset_155| (store |v_#memory_$Pointer$.offset_156| |c_~#__CS_thread_status~0.base| (store .cse30 .cse1 (select (select |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_status~0.base|) .cse1)))) (= |v_#memory_$Pointer$.offset_151| (store |v_#memory_$Pointer$.offset_152| |c_~#full~0.base| (store (select |v_#memory_$Pointer$.offset_152| |c_~#full~0.base|) .cse6 (select (select |v_#memory_$Pointer$.offset_151| |c_~#full~0.base|) .cse6)))) (= (store |v_#memory_$Pointer$.offset_153| |c_~#empty~0.base| (store (select |v_#memory_$Pointer$.offset_153| |c_~#empty~0.base|) .cse17 (select (select |v_#memory_$Pointer$.offset_152| |c_~#empty~0.base|) .cse17))) |v_#memory_$Pointer$.offset_152|) (= |v_#memory_$Pointer$.offset_156| (store |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base| (store .cse29 .cse3 (select .cse30 .cse3)))) (= |v_#memory_$Pointer$.offset_154| (let ((.cse31 (store |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base| (let ((.cse32 (let ((.cse33 (store (select |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base|) .cse15 (select (select |v_#memory_$Pointer$.offset_155| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse16)))) (store .cse33 .cse13 (select (select (store |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base| .cse33) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse14))))) (store .cse32 .cse10 (select (select (store |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base| .cse32) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse11)))))) (store .cse31 |c_~#num~0.base| (store (select .cse31 |c_~#num~0.base|) .cse8 (select (select |v_#memory_$Pointer$.offset_154| |c_~#num~0.base|) .cse8)))))))) (exists ((v_~__CS_thread~0.offset_40 (Array Int Int))) (= (store v_~__CS_thread~0.offset_40 0 |#funAddr~main_thread.offset|) c_~__CS_thread~0.offset)) (= c_~__CS_round~0 0) (= c_~__CS_thread_index~0 0))) is different from false [2023-11-12 00:51:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [771587173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:51:02,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:51:02,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 8 [2023-11-12 00:51:02,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74249003] [2023-11-12 00:51:02,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:51:02,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:51:02,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:51:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:51:02,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=26, Unknown=1, NotChecked=10, Total=56 [2023-11-12 00:51:02,820 INFO L87 Difference]: Start difference. First operand 160 states and 239 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:51:04,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:51:06,976 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse22 (+ 3 |c_~#__CS_thread_status~0.offset|)) (.cse23 (+ |c_~#m~0.offset| 1)) (.cse19 (+ 5 |c_~#__CS_thread_status~0.offset|)) (.cse24 (+ |c_~#full~0.offset| 1)) (.cse35 (+ |c_~#empty~0.offset| 1)) (.cse21 (+ |c_~#__CS_thread_status~0.offset| 4)) (.cse26 (+ |c_~#num~0.offset| 4)) (.cse28 (+ |c_~#__CS_thread_lockedon~0.offset| 20)) (.cse29 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 20)) (.cse31 (+ |c_~#__CS_thread_lockedon~0.offset| 16)) (.cse32 (+ 16 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse33 (+ |c_~#__CS_thread_lockedon~0.offset| 12)) (.cse34 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 12)) (.cse16 (= c_~__CS_round~0 0)) (.cse17 (= c_~__CS_thread_index~0 0))) (and (or (< 2 |c_ULTIMATE.start_main_~j~2#1|) (let ((.cse2 (select |c_#memory_int| 9)) (.cse12 (select |c_#memory_int| 4)) (.cse13 (select |c_#memory_int| 7)) (.cse15 (select |c_#memory_int| 1)) (.cse11 (select |c_#memory_int| 3)) (.cse3 (select |c_#memory_int| 10)) (.cse14 (select |c_#memory_$Pointer$.base| 6)) (.cse1 (select |c_#memory_int| 5)) (.cse10 (select |c_#memory_$Pointer$.offset| 6)) (.cse4 (+ |c_#StackHeapBarrier| 1)) (.cse0 (select |c_#memory_int| 8))) (and (= |c_~#m~0.offset| 0) (exists ((|v_ULTIMATE.start_ULTIMATE.init_#t~nondet130#1_7| Int) (v_~__CS_u~0.full_8 (Array Int Int))) (= (store (store v_~__CS_u~0.full_8 0 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet130#1_7|) 1 (select c_~__CS_u~0.full 1)) c_~__CS_u~0.full)) (= (select .cse0 1) 0) (exists ((v_~__CS_thread~0.base_39 (Array Int Int))) (= (store (store (store v_~__CS_thread~0.base_39 0 0) 1 0) 2 0) c_~__CS_thread~0.base)) (= (select .cse1 2) 0) (= (select .cse1 5) 0) (= (select .cse2 1) 0) (= 2 c_~__THREAD_FINISHED~0) (= |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.offset| 0) (= |c_~#__CS_thread_born_round~0.offset| 0) (= |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.offset| 0) (= |c_~#full~0.base| 10) (= c_~__CS_ret_FINISHED~0 4) (= 5 |c_~#__CS_thread_status~0.base|) (= (select .cse3 1) 0) (= 6 |c_~#__CS_thread_lockedon~0.base|) (= |c_~#empty~0.offset| 0) (exists ((|v_#length_22| (Array Int Int))) (and (= 10 (select |v_#length_22| 2)) (= (select |v_#length_22| 3) 3) (= (select |v_#length_22| 5) 6) (= (select |v_#length_22| 1) 2) (= 2 (select |v_#length_22| 9)) (= 3 (select |v_#length_22| 4)) (= (store (store (store (store (store (store |v_#length_22| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| 6) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| 24) |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.base| 8) |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base| 2) |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.base| 2) |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.base| 2) |c_#length|) (= 2 (select |v_#length_22| 10)) (= 8 (select |v_#length_22| 7)) (= (select |v_#length_22| 6) 24) (= 2 (select |v_#length_22| 8)))) (<= .cse4 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (= 2 c_~__CS_ret_ERROR~0) (exists ((|v_#valid_89| (Array Int Int))) (let ((.cse6 (store |v_#valid_89| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| 1))) (let ((.cse7 (store .cse6 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| 1))) (let ((.cse9 (store .cse7 |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.base| 1))) (let ((.cse8 (store .cse9 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base| 1))) (let ((.cse5 (store .cse8 |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.base| 1))) (and (= (select |v_#valid_89| 2) 1) (= (select |v_#valid_89| 1) 1) (= (select |v_#valid_89| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) 0) (= |c_#valid| (store .cse5 |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.base| 1)) (= (select .cse6 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) 0) (= (select |v_#valid_89| 7) 1) (= (select |v_#valid_89| 0) 0) (= (select |v_#valid_89| 3) 1) (= 1 (select |v_#valid_89| 10)) (= (select |v_#valid_89| 8) 1) (= (select .cse7 |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.base|) 0) (= (select |v_#valid_89| 6) 1) (= (select |v_#valid_89| 5) 1) (= (select .cse8 |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.base|) 0) (= (select .cse9 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) 0) (= (select |v_#valid_89| 4) 1) (= (select |v_#valid_89| 9) 1) (= (select .cse5 |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.base|) 0)))))))) (= (select .cse2 0) 0) (= 0 (select .cse10 16)) (= (select .cse11 0) 0) (= (select .cse12 0) 0) (<= .cse4 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) (= c_~__CS_ret~0 0) (<= 1 |c_#StackHeapBarrier|) (= (select .cse13 0) 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse14 12) 0) (= |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.offset| 0) (= |c_~#__CS_thread_born_round~0.base| 4) (= |c_~#num~0.offset| 0) (= (select .cse11 1) 0) (<= .cse4 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) (exists ((v_~__CS_u~0.num_8 (Array Int Int))) (= c_~__CS_u~0.num (store (store v_~__CS_u~0.num_8 0 0) 1 0))) (= (select .cse1 4) 0) (exists ((v_~__CS_u~0.m_8 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet126#1_7| Int)) (= c_~__CS_u~0.m (store (store v_~__CS_u~0.m_8 0 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet126#1_7|) 1 (select c_~__CS_u~0.m 1)))) (= 3 |c_~#__CS_thread_allocated~0.base|) (= (select .cse15 1) 0) (= |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.offset| 0) (<= .cse4 |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.base|) (= (select .cse14 0) 0) (= (select .cse1 3) 0) (= (select .cse14 4) 0) (= (select .cse12 1) 0) (= c_~__CS_error~0 0) (= c_~__THREAD_UNUSED~0 0) (= (select .cse10 12) 0) (= (select .cse12 2) 0) (= (select .cse13 4) 0) (= (select .cse10 4) 0) (= (select .cse1 0) 0) (= |c_~#full~0.offset| 0) (= |c_~#empty~0.base| 9) (<= .cse4 |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.base|) (= (select .cse10 20) 0) (= (select .cse14 16) 0) (= 1 c_~__THREAD_RUNNING~0) (= |c_~#__CS_thread_status~0.offset| 0) (= 48 (select .cse15 0)) (= 0 (select .cse14 20)) (= (select .cse11 2) 0) (= (select .cse3 0) 0) (= (select .cse14 8) 0) (= (select .cse10 0) 0) (= (select .cse1 1) 0) (= (select .cse10 8) 0) (= |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 0) .cse16 .cse17 (= |c_~#__CS_thread_allocated~0.offset| 0) (exists ((v_~__CS_u~0.empty_8 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet128#1_7| Int)) (= (store (store v_~__CS_u~0.empty_8 0 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet128#1_7|) 1 (select c_~__CS_u~0.empty 1)) c_~__CS_u~0.empty)) (<= .cse4 |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.base|) (= 7 |c_~#num~0.base|) (= |c_~#m~0.base| 8) (= c_~__CS_ret_PREEMPTED~0 1) (exists ((v_~__CS_thread~0.offset_39 (Array Int Int))) (= (store (store (store v_~__CS_thread~0.offset_39 0 0) 1 0) 2 0) c_~__CS_thread~0.offset)) (= |c_~#__CS_thread_lockedon~0.offset| 0) (= (select .cse0 0) 0) (= |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 0)))) (exists ((v_~__CS_thread~0.base_40 (Array Int Int))) (= c_~__CS_thread~0.base (store v_~__CS_thread~0.base_40 0 |#funAddr~main_thread.base|))) (exists ((|v_#memory_$Pointer$.base_152| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_151| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_150| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_280| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_158| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_157| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_154| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_153| (Array Int (Array Int Int)))) (let ((.cse18 (select |v_#memory_$Pointer$.base_153| |c_~#__CS_thread_status~0.base|)) (.cse20 (select |v_#memory_$Pointer$.base_157| |c_~#__CS_thread_status~0.base|))) (and (= (store |v_#memory_$Pointer$.base_150| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.base_150| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.base| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|))) |c_#memory_$Pointer$.base|) (= (store |v_#memory_$Pointer$.base_153| |c_~#__CS_thread_status~0.base| (store .cse18 .cse19 (select (select |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_status~0.base|) .cse19))) |v_#memory_$Pointer$.base_152|) (= (store |v_#memory_$Pointer$.base_158| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.base_158| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.base_151| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|))) |v_#memory_$Pointer$.base_151|) (= (store |v_#memory_$Pointer$.base_157| |c_~#__CS_thread_status~0.base| (store .cse20 .cse21 (select .cse18 .cse21))) |v_#memory_$Pointer$.base_153|) (= (store |v_#memory_$Pointer$.base_280| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_280| |c_~#__CS_thread_status~0.base|) .cse22 (select .cse20 .cse22))) |v_#memory_$Pointer$.base_157|) (= |v_#memory_$Pointer$.base_154| (store |v_#memory_$Pointer$.base_155| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.base_155| |c_~#m~0.base|) .cse23 (select (select |v_#memory_$Pointer$.base_154| |c_~#m~0.base|) .cse23)))) (= |v_#memory_$Pointer$.base_150| (store |v_#memory_$Pointer$.base_151| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_151| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.base_150| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|)))) (= (store |v_#memory_$Pointer$.base_156| |c_~#full~0.base| (store (select |v_#memory_$Pointer$.base_156| |c_~#full~0.base|) .cse24 (select (select |v_#memory_$Pointer$.base_158| |c_~#full~0.base|) .cse24))) |v_#memory_$Pointer$.base_158|) (= (let ((.cse25 (store |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base| (let ((.cse27 (let ((.cse30 (store (select |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base|) .cse33 (select (select |v_#memory_$Pointer$.base_152| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse34)))) (store .cse30 .cse31 (select (select (store |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base| .cse30) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse32))))) (store .cse27 .cse28 (select (select (store |v_#memory_$Pointer$.base_152| |c_~#__CS_thread_lockedon~0.base| .cse27) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse29)))))) (store .cse25 |c_~#num~0.base| (store (select .cse25 |c_~#num~0.base|) .cse26 (select (select |v_#memory_$Pointer$.base_155| |c_~#num~0.base|) .cse26)))) |v_#memory_$Pointer$.base_155|) (= (store |v_#memory_$Pointer$.base_154| |c_~#empty~0.base| (store (select |v_#memory_$Pointer$.base_154| |c_~#empty~0.base|) .cse35 (select (select |v_#memory_$Pointer$.base_156| |c_~#empty~0.base|) .cse35))) |v_#memory_$Pointer$.base_156|)))) (<= 3 |c_ULTIMATE.start_main_~j~2#1|) (= (select (select |c_#memory_int| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|) |c_ULTIMATE.start_main_#t~mem94#1|) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (exists ((|v_#memory_int_218| (Array Int (Array Int Int))) (|v_#memory_int_137| (Array Int (Array Int Int))) (|v_#memory_int_138| (Array Int (Array Int Int))) (|v_#memory_int_139| (Array Int (Array Int Int)))) (let ((.cse37 (select |v_#memory_int_138| |c_~#__CS_thread_lockedon~0.base|)) (.cse40 (select |v_#memory_int_137| |c_~#__CS_thread_lockedon~0.base|))) (and (= |v_#memory_int_138| (let ((.cse36 (store |v_#memory_int_218| |c_~#__CS_thread_status~0.base| (let ((.cse38 (let ((.cse39 (store (select |v_#memory_int_218| |c_~#__CS_thread_status~0.base|) .cse22 (select (select |v_#memory_int_218| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 3))))) (store .cse39 .cse21 (select (select (store |v_#memory_int_218| |c_~#__CS_thread_status~0.base| .cse39) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 4)))))) (store .cse38 .cse19 (select (select (store |v_#memory_int_218| |c_~#__CS_thread_status~0.base| .cse38) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 5))))))) (store .cse36 |c_~#__CS_thread_lockedon~0.base| (store (select .cse36 |c_~#__CS_thread_lockedon~0.base|) .cse33 (select .cse37 .cse33))))) (= (store |v_#memory_int_137| |c_~#__CS_thread_lockedon~0.base| (store .cse40 .cse28 (select (select |v_#memory_int_139| |c_~#__CS_thread_lockedon~0.base|) .cse28))) |v_#memory_int_139|) (= |c_#memory_int| (let ((.cse41 (let ((.cse42 (let ((.cse43 (let ((.cse44 (let ((.cse45 (let ((.cse46 (store |v_#memory_int_139| |c_~#num~0.base| (store (select |v_#memory_int_139| |c_~#num~0.base|) .cse26 (select (select |v_#memory_int_139| |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_num~0#1.offset| 4)))))) (store .cse46 |c_~#m~0.base| (store (select .cse46 |c_~#m~0.base|) .cse23 (select (select .cse46 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.offset| 1))))))) (store .cse45 |c_~#empty~0.base| (store (select .cse45 |c_~#empty~0.base|) .cse35 (select (select .cse45 |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_empty~0#1.offset| 1))))))) (store .cse44 |c_~#full~0.base| (store (select .cse44 |c_~#full~0.base|) .cse24 (select (select .cse44 |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_full~0#1.offset| 1))))))) (store .cse43 |c_~#__CS_thread_born_round~0.base| (store (select .cse43 |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| 0))))) (store .cse42 |c_~#__CS_thread_status~0.base| (store (select .cse42 |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| c_~__THREAD_RUNNING~0))))) (store .cse41 |c_~#__CS_thread_allocated~0.base| (store (select .cse41 |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| 1)))) (= (store |v_#memory_int_138| |c_~#__CS_thread_lockedon~0.base| (store .cse37 .cse31 (select .cse40 .cse31))) |v_#memory_int_137|)))) (exists ((|v_#memory_$Pointer$.offset_280| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_150| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_151| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_152| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_153| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_154| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_157| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_158| (Array Int (Array Int Int)))) (let ((.cse47 (select |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base|)) (.cse48 (select |v_#memory_$Pointer$.offset_156| |c_~#__CS_thread_status~0.base|))) (and (= |v_#memory_$Pointer$.offset_158| (store |v_#memory_$Pointer$.offset_151| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.offset_151| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.offset_158| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|)))) (= |v_#memory_$Pointer$.offset_150| (store |v_#memory_$Pointer$.offset_280| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_280| |c_~#__CS_thread_status~0.base|) .cse22 (select .cse47 .cse22)))) (= (store |v_#memory_$Pointer$.offset_154| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.offset_154| |c_~#m~0.base|) .cse23 (select (select |v_#memory_$Pointer$.offset_153| |c_~#m~0.base|) .cse23))) |v_#memory_$Pointer$.offset_153|) (= |c_#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_157| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.offset_157| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.offset| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|)))) (= (store |v_#memory_$Pointer$.offset_158| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_158| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.offset_157| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|))) |v_#memory_$Pointer$.offset_157|) (= |v_#memory_$Pointer$.offset_155| (store |v_#memory_$Pointer$.offset_156| |c_~#__CS_thread_status~0.base| (store .cse48 .cse19 (select (select |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_status~0.base|) .cse19)))) (= |v_#memory_$Pointer$.offset_151| (store |v_#memory_$Pointer$.offset_152| |c_~#full~0.base| (store (select |v_#memory_$Pointer$.offset_152| |c_~#full~0.base|) .cse24 (select (select |v_#memory_$Pointer$.offset_151| |c_~#full~0.base|) .cse24)))) (= (store |v_#memory_$Pointer$.offset_153| |c_~#empty~0.base| (store (select |v_#memory_$Pointer$.offset_153| |c_~#empty~0.base|) .cse35 (select (select |v_#memory_$Pointer$.offset_152| |c_~#empty~0.base|) .cse35))) |v_#memory_$Pointer$.offset_152|) (= |v_#memory_$Pointer$.offset_156| (store |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base| (store .cse47 .cse21 (select .cse48 .cse21)))) (= |v_#memory_$Pointer$.offset_154| (let ((.cse49 (store |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base| (let ((.cse50 (let ((.cse51 (store (select |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base|) .cse33 (select (select |v_#memory_$Pointer$.offset_155| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse34)))) (store .cse51 .cse31 (select (select (store |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base| .cse51) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse32))))) (store .cse50 .cse28 (select (select (store |v_#memory_$Pointer$.offset_155| |c_~#__CS_thread_lockedon~0.base| .cse50) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse29)))))) (store .cse49 |c_~#num~0.base| (store (select .cse49 |c_~#num~0.base|) .cse26 (select (select |v_#memory_$Pointer$.offset_154| |c_~#num~0.base|) .cse26)))))))) (exists ((v_~__CS_thread~0.offset_40 (Array Int Int))) (= (store v_~__CS_thread~0.offset_40 0 |#funAddr~main_thread.offset|) c_~__CS_thread~0.offset)) .cse16 .cse17)) is different from false [2023-11-12 00:51:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:51:07,921 INFO L93 Difference]: Finished difference Result 312 states and 466 transitions. [2023-11-12 00:51:07,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:51:07,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 53 [2023-11-12 00:51:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:51:07,924 INFO L225 Difference]: With dead ends: 312 [2023-11-12 00:51:07,925 INFO L226 Difference]: Without dead ends: 160 [2023-11-12 00:51:07,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=21, Invalid=27, Unknown=2, NotChecked=22, Total=72 [2023-11-12 00:51:07,927 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:51:07,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 512 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 1 Unknown, 67 Unchecked, 3.0s Time] [2023-11-12 00:51:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-12 00:51:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-12 00:51:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 94 states have (on average 1.3617021276595744) internal successors, (128), 94 states have internal predecessors, (128), 55 states have call successors, (55), 10 states have call predecessors, (55), 10 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-12 00:51:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 238 transitions. [2023-11-12 00:51:07,954 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 238 transitions. Word has length 53 [2023-11-12 00:51:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:51:07,955 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 238 transitions. [2023-11-12 00:51:07,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-12 00:51:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 238 transitions. [2023-11-12 00:51:07,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 00:51:07,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:51:07,959 INFO L195 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:51:07,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:51:08,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:51:08,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:51:08,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:51:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1609565421, now seen corresponding path program 1 times [2023-11-12 00:51:08,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:51:08,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275091029] [2023-11-12 00:51:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:08,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:51:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-12 00:51:08,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:51:08,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275091029] [2023-11-12 00:51:08,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275091029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:51:08,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250584748] [2023-11-12 00:51:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:08,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:51:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:08,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:51:08,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c355017-284b-43aa-84af-92cc0651ee39/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:51:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:08,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:51:08,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:51:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-12 00:51:08,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:51:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-12 00:51:09,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250584748] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:51:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2017807857] [2023-11-12 00:51:09,023 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-11-12 00:51:09,023 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:51:09,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:51:09,024 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:51:09,024 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs