./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91 --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 f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:04:28,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:04:28,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:04:28,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:04:28,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:04:28,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:04:28,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:04:28,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:04:28,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:04:28,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:04:28,580 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:04:28,581 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:04:28,582 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:04:28,584 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:04:28,584 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:04:28,585 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:04:28,586 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:04:28,586 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:04:28,587 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:04:28,587 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:04:28,588 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:04:28,589 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:04:28,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:04:28,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:04:28,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:04:28,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:04:28,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:04:28,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:04:28,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:04:28,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:04:28,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:04:28,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:04:28,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:04:28,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:04:28,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:04:28,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:04:28,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:04:28,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:28,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:04:28,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:04:28,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:04:28,602 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:04:28,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:04:28,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:04:28,604 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:04:28,604 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:04:28,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:04:28,605 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_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2023-11-25 00:04:28,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:04:28,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:04:28,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:04:28,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:04:28,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:04:28,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2023-11-25 00:04:32,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:04:33,317 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:04:33,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2023-11-25 00:04:33,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/data/2da3d7937/24fa752b3e6e4a419ae886543af08e72/FLAG6adf503e0 [2023-11-25 00:04:33,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/data/2da3d7937/24fa752b3e6e4a419ae886543af08e72 [2023-11-25 00:04:33,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:04:33,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:04:33,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:33,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:04:33,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:04:33,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:33" (1/1) ... [2023-11-25 00:04:33,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cebd4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:33, skipping insertion in model container [2023-11-25 00:04:33,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:33" (1/1) ... [2023-11-25 00:04:33,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:34,086 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_c457def4-585c-40ab-86e9-5aa87ad16d9b/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2023-11-25 00:04:34,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:34,307 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:04:34,382 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_c457def4-585c-40ab-86e9-5aa87ad16d9b/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2023-11-25 00:04:34,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:34,595 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:04:34,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34 WrapperNode [2023-11-25 00:04:34,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:34,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:34,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:04:34,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:04:34,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,778 INFO L138 Inliner]: procedures = 254, calls = 274, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 646 [2023-11-25 00:04:34,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:34,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:04:34,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:04:34,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:04:34,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:04:34,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:04:34,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:04:34,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:04:34,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (1/1) ... [2023-11-25 00:04:34,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:35,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:35,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:04:35,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:04:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:04:35,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:04:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:04:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2023-11-25 00:04:35,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2023-11-25 00:04:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:04:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:04:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:04:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2023-11-25 00:04:35,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2023-11-25 00:04:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:04:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:04:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2023-11-25 00:04:35,095 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2023-11-25 00:04:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:04:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:04:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-11-25 00:04:35,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-11-25 00:04:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-11-25 00:04:35,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-11-25 00:04:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-25 00:04:35,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-25 00:04:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-25 00:04:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-25 00:04:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-11-25 00:04:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-11-25 00:04:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:04:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:04:35,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:04:35,371 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:04:35,374 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:04:35,444 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:35,444 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);#res := 0; [2023-11-25 00:04:35,477 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:35,478 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2023-11-25 00:04:35,478 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2023-11-25 00:04:35,478 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:35,478 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:35,479 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2023-11-25 00:04:35,479 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2023-11-25 00:04:35,479 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:35,479 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296); [2023-11-25 00:04:36,115 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:36,116 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2023-11-25 00:04:36,116 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:36,116 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2023-11-25 00:04:36,116 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:36,117 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2023-11-25 00:04:36,117 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:36,117 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2023-11-25 00:04:36,117 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);pop_#res#1 := 0; [2023-11-25 00:04:36,117 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296));pop_#res#1 := 0; [2023-11-25 00:04:36,118 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2023-11-25 00:04:36,118 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);push_#res#1 := 0; [2023-11-25 00:04:36,118 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-11-25 00:04:38,490 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:04:38,658 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:04:38,659 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-25 00:04:38,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:38 BoogieIcfgContainer [2023-11-25 00:04:38,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:04:38,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:04:38,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:04:38,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:04:38,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:04:33" (1/3) ... [2023-11-25 00:04:38,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a35ccf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:38, skipping insertion in model container [2023-11-25 00:04:38,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:34" (2/3) ... [2023-11-25 00:04:38,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a35ccf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:04:38, skipping insertion in model container [2023-11-25 00:04:38,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:04:38" (3/3) ... [2023-11-25 00:04:38,673 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2023-11-25 00:04:38,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:04:38,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:04:38,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:04:38,797 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;@108b5b9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:04:38,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:04:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 111 states have (on average 1.4594594594594594) internal successors, (162), 114 states have internal predecessors, (162), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-25 00:04:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-25 00:04:38,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:38,876 INFO L195 NwaCegarLoop]: trace histogram [14, 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] [2023-11-25 00:04:38,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:38,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1434080013, now seen corresponding path program 1 times [2023-11-25 00:04:38,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:38,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581202193] [2023-11-25 00:04:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-25 00:04:39,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581202193] [2023-11-25 00:04:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581202193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:39,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:04:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691636351] [2023-11-25 00:04:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:04:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:04:40,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:04:40,049 INFO L87 Difference]: Start difference. First operand has 195 states, 111 states have (on average 1.4594594594594594) internal successors, (162), 114 states have internal predecessors, (162), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:04:42,153 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 [] [2023-11-25 00:04:44,162 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 [] [2023-11-25 00:04:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:44,402 INFO L93 Difference]: Finished difference Result 389 states and 615 transitions. [2023-11-25 00:04:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:04:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 66 [2023-11-25 00:04:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:44,435 INFO L225 Difference]: With dead ends: 389 [2023-11-25 00:04:44,435 INFO L226 Difference]: Without dead ends: 196 [2023-11-25 00:04:44,448 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 [2023-11-25 00:04:44,457 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 4 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:44,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 548 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2023-11-25 00:04:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-25 00:04:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2023-11-25 00:04:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 111 states have (on average 1.4414414414414414) internal successors, (160), 113 states have internal predecessors, (160), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-25 00:04:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 306 transitions. [2023-11-25 00:04:44,587 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 306 transitions. Word has length 66 [2023-11-25 00:04:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:44,589 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 306 transitions. [2023-11-25 00:04:44,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:04:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 306 transitions. [2023-11-25 00:04:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-25 00:04:44,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:44,611 INFO L195 NwaCegarLoop]: trace histogram [14, 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] [2023-11-25 00:04:44,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:04:44,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:44,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1553671501, now seen corresponding path program 1 times [2023-11-25 00:04:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112856804] [2023-11-25 00:04:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-25 00:04:45,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112856804] [2023-11-25 00:04:45,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112856804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:45,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:04:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066990549] [2023-11-25 00:04:45,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:04:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:04:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:04:45,082 INFO L87 Difference]: Start difference. First operand 194 states and 306 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:04:47,153 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 [] [2023-11-25 00:04:49,162 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 [] [2023-11-25 00:04:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:49,351 INFO L93 Difference]: Finished difference Result 388 states and 614 transitions. [2023-11-25 00:04:49,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:04:49,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 69 [2023-11-25 00:04:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:49,363 INFO L225 Difference]: With dead ends: 388 [2023-11-25 00:04:49,363 INFO L226 Difference]: Without dead ends: 196 [2023-11-25 00:04:49,374 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 [2023-11-25 00:04:49,377 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 0 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:49,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 547 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2023-11-25 00:04:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-25 00:04:49,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-25 00:04:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 115 states have internal predecessors, (162), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-25 00:04:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 308 transitions. [2023-11-25 00:04:49,451 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 308 transitions. Word has length 69 [2023-11-25 00:04:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:49,452 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 308 transitions. [2023-11-25 00:04:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:04:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 308 transitions. [2023-11-25 00:04:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-25 00:04:49,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:49,458 INFO L195 NwaCegarLoop]: trace histogram [14, 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] [2023-11-25 00:04:49,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:04:49,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:04:49,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:49,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1562237262, now seen corresponding path program 1 times [2023-11-25 00:04:49,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:49,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397498742] [2023-11-25 00:04:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:49,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-25 00:04:49,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397498742] [2023-11-25 00:04:49,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397498742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:04:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423251628] [2023-11-25 00:04:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:49,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:49,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:49,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:50,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:04:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:50,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:04:50,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-25 00:04:50,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-25 00:04:50,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423251628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:50,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1233130430] [2023-11-25 00:04:50,778 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-25 00:04:50,778 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:50,784 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:50,791 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:50,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:05:04,649 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:05:10,292 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (+ |c_~#arr~0.offset| 36)) (.cse11 (+ 32 |c_~#arr~0.offset|)) (.cse4 (+ |c_~#flag~0.offset| 1)) (.cse15 (+ |c_~#arr~0.offset| 24)) (.cse13 (+ |c_~#arr~0.offset| 28)) (.cse16 (+ |c_~#arr~0.offset| 20)) (.cse17 (+ |c_~#top~0.offset| 4)) (.cse28 (+ |c_~#__CS_thread_lockedon~0.offset| 20)) (.cse37 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 20)) (.cse26 (+ |c_~#__CS_thread_lockedon~0.offset| 16)) (.cse39 (+ 16 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse19 (+ |c_~#__CS_thread_lockedon~0.offset| 12)) (.cse40 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 12)) (.cse24 (+ |c_~#__CS_thread_status~0.offset| 4)) (.cse6 (+ |c_~#m~0.offset| 1)) (.cse25 (+ 3 |c_~#__CS_thread_status~0.offset|)) (.cse22 (+ 5 |c_~#__CS_thread_status~0.offset|))) (and (exists ((|v_#memory_int_193| (Array Int (Array Int Int))) (|v_#memory_int_143| (Array Int (Array Int Int))) (|v_#memory_int_144| (Array Int (Array Int Int))) (|v_#memory_int_142| (Array Int (Array Int Int)))) (let ((.cse20 (select |v_#memory_int_144| |c_~#__CS_thread_lockedon~0.base|)) (.cse27 (select |v_#memory_int_143| |c_~#__CS_thread_lockedon~0.base|))) (and (= (let ((.cse0 (let ((.cse1 (let ((.cse2 (let ((.cse3 (let ((.cse5 (let ((.cse7 (store |v_#memory_int_142| |c_~#top~0.base| (store (select |v_#memory_int_142| |c_~#top~0.base|) .cse17 (select (select |v_#memory_int_142| |c_~#__CS_cp_top~0.base|) (+ 4 |c_~#__CS_cp_top~0.offset|)))))) (store .cse7 |c_~#arr~0.base| (let ((.cse8 (let ((.cse10 (let ((.cse12 (let ((.cse14 (store (select .cse7 |c_~#arr~0.base|) .cse16 (select (select .cse7 |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 20))))) (store .cse14 .cse15 (select (select (store .cse7 |c_~#arr~0.base| .cse14) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 24)))))) (store .cse12 .cse13 (select (select (store .cse7 |c_~#arr~0.base| .cse12) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 28)))))) (store .cse10 .cse11 (select (select (store .cse7 |c_~#arr~0.base| .cse10) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 32)))))) (store .cse8 .cse9 (select (select (store .cse7 |c_~#arr~0.base| .cse8) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 36)))))))) (store .cse5 |c_~#m~0.base| (store (select .cse5 |c_~#m~0.base|) .cse6 (select (select .cse5 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.offset| 1))))))) (store .cse3 |c_~#flag~0.base| (store (select .cse3 |c_~#flag~0.base|) .cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.offset| 1))))))) (store .cse2 |c_~#__CS_thread_born_round~0.base| (store (select .cse2 |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| 0))))) (store .cse1 |c_~#__CS_thread_status~0.base| (store (select .cse1 |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| c_~__THREAD_RUNNING~0))))) (store .cse0 |c_~#__CS_thread_allocated~0.base| (store (select .cse0 |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| 1))) |c_#memory_int|) (= (let ((.cse18 (store |v_#memory_int_193| |c_~#__CS_thread_status~0.base| (let ((.cse21 (let ((.cse23 (store (select |v_#memory_int_193| |c_~#__CS_thread_status~0.base|) .cse25 (select (select |v_#memory_int_193| |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 .cse23 .cse24 (select (select (store |v_#memory_int_193| |c_~#__CS_thread_status~0.base| .cse23) |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 .cse21 .cse22 (select (select (store |v_#memory_int_193| |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| 5))))))) (store .cse18 |c_~#__CS_thread_lockedon~0.base| (store (select .cse18 |c_~#__CS_thread_lockedon~0.base|) .cse19 (select .cse20 .cse19)))) |v_#memory_int_144|) (= (store |v_#memory_int_144| |c_~#__CS_thread_lockedon~0.base| (store .cse20 .cse26 (select .cse27 .cse26))) |v_#memory_int_143|) (= |v_#memory_int_142| (store |v_#memory_int_143| |c_~#__CS_thread_lockedon~0.base| (store .cse27 .cse28 (select (select |v_#memory_int_142| |c_~#__CS_thread_lockedon~0.base|) .cse28))))))) (exists ((|v_#memory_$Pointer$.offset_148| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_149| (Array Int (Array Int Int))) (|v_#memory_$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$.offset_262| (Array Int (Array Int Int))) (|v_#memory_$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$.offset_144| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_145| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_146| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_147| (Array Int (Array Int Int)))) (let ((.cse29 (select |v_#memory_$Pointer$.offset_153| |c_~#arr~0.base|)) (.cse32 (select |v_#memory_$Pointer$.offset_154| |c_~#arr~0.base|)) (.cse34 (select |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base|)) (.cse33 (select |v_#memory_$Pointer$.offset_152| |c_~#__CS_thread_status~0.base|)) (.cse30 (select |v_#memory_$Pointer$.offset_156| |c_~#arr~0.base|)) (.cse31 (select |v_#memory_$Pointer$.offset_151| |c_~#arr~0.base|))) (and (= (store |v_#memory_$Pointer$.offset_149| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.offset_149| |c_~#m~0.base|) .cse6 (select (select |v_#memory_$Pointer$.offset_144| |c_~#m~0.base|) .cse6))) |v_#memory_$Pointer$.offset_144|) (= (store |v_#memory_$Pointer$.offset_148| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_148| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.offset_145| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|))) |v_#memory_$Pointer$.offset_145|) (= |v_#memory_$Pointer$.offset_153| (store |v_#memory_$Pointer$.offset_155| |c_~#arr~0.base| (store (select |v_#memory_$Pointer$.offset_155| |c_~#arr~0.base|) .cse16 (select .cse29 .cse16)))) (= (store |v_#memory_$Pointer$.offset_153| |c_~#arr~0.base| (store .cse29 .cse15 (select .cse30 .cse15))) |v_#memory_$Pointer$.offset_156|) (= (store |v_#memory_$Pointer$.offset_151| |c_~#arr~0.base| (store .cse31 .cse11 (select .cse32 .cse11))) |v_#memory_$Pointer$.offset_154|) (= |v_#memory_$Pointer$.offset_146| (store |v_#memory_$Pointer$.offset_144| |c_~#flag~0.base| (store (select |v_#memory_$Pointer$.offset_144| |c_~#flag~0.base|) .cse4 (select (select |v_#memory_$Pointer$.offset_146| |c_~#flag~0.base|) .cse4)))) (= |v_#memory_$Pointer$.offset_148| (store |v_#memory_$Pointer$.offset_146| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.offset_146| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.offset_148| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|)))) (= (store |v_#memory_$Pointer$.offset_145| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.offset_145| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.offset| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|))) |c_#memory_$Pointer$.offset|) (= (store |v_#memory_$Pointer$.offset_152| |c_~#__CS_thread_status~0.base| (store .cse33 .cse22 (select (select |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_status~0.base|) .cse22))) |v_#memory_$Pointer$.offset_147|) (= (store |v_#memory_$Pointer$.offset_262| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_262| |c_~#__CS_thread_status~0.base|) .cse25 (select .cse34 .cse25))) |v_#memory_$Pointer$.offset_150|) (= (let ((.cse35 (store |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base| (let ((.cse36 (let ((.cse38 (store (select |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base|) .cse19 (select (select |v_#memory_$Pointer$.offset_147| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse40)))) (store .cse38 .cse26 (select (select (store |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base| .cse38) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse39))))) (store .cse36 .cse28 (select (select (store |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base| .cse36) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse37)))))) (store .cse35 |c_~#top~0.base| (store (select .cse35 |c_~#top~0.base|) .cse17 (select (select |v_#memory_$Pointer$.offset_155| |c_~#top~0.base|) .cse17)))) |v_#memory_$Pointer$.offset_155|) (= |v_#memory_$Pointer$.offset_149| (store |v_#memory_$Pointer$.offset_154| |c_~#arr~0.base| (store .cse32 .cse9 (select (select |v_#memory_$Pointer$.offset_149| |c_~#arr~0.base|) .cse9)))) (= |v_#memory_$Pointer$.offset_152| (store |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base| (store .cse34 .cse24 (select .cse33 .cse24)))) (= |v_#memory_$Pointer$.offset_151| (store |v_#memory_$Pointer$.offset_156| |c_~#arr~0.base| (store .cse30 .cse13 (select .cse31 .cse13))))))) (exists ((v_~__CS_thread~0.base_40 (Array Int Int))) (= c_~__CS_thread~0.base (store v_~__CS_thread~0.base_40 0 |#funAddr~main_thread.base|))) (= (select (select |c_#memory_int| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|) |c_ULTIMATE.start_main_#t~mem104#1|) (exists ((|v_#memory_$Pointer$.base_152| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_262| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_151| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_150| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_149| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_148| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_147| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_146| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_145| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_144| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_154| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_153| (Array Int (Array Int Int)))) (let ((.cse41 (select |v_#memory_$Pointer$.base_155| |c_~#arr~0.base|)) (.cse44 (select |v_#memory_$Pointer$.base_150| |c_~#arr~0.base|)) (.cse42 (select |v_#memory_$Pointer$.base_151| |c_~#arr~0.base|)) (.cse43 (select |v_#memory_$Pointer$.base_153| |c_~#arr~0.base|)) (.cse48 (select |v_#memory_$Pointer$.base_156| |c_~#__CS_thread_status~0.base|)) (.cse49 (select |v_#memory_$Pointer$.base_146| |c_~#__CS_thread_status~0.base|))) (and (= (store |v_#memory_$Pointer$.base_144| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.base_144| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.base_145| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|))) |v_#memory_$Pointer$.base_145|) (= (store |v_#memory_$Pointer$.base_155| |c_~#arr~0.base| (store .cse41 .cse9 (select (select |v_#memory_$Pointer$.base_152| |c_~#arr~0.base|) .cse9))) |v_#memory_$Pointer$.base_152|) (= |v_#memory_$Pointer$.base_148| (store |v_#memory_$Pointer$.base_145| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_145| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.base_148| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|)))) (= (store |v_#memory_$Pointer$.base_151| |c_~#arr~0.base| (store .cse42 .cse11 (select .cse41 .cse11))) |v_#memory_$Pointer$.base_155|) (= (store |v_#memory_$Pointer$.base_147| |c_~#flag~0.base| (store (select |v_#memory_$Pointer$.base_147| |c_~#flag~0.base|) .cse4 (select (select |v_#memory_$Pointer$.base_144| |c_~#flag~0.base|) .cse4))) |v_#memory_$Pointer$.base_144|) (= (store |v_#memory_$Pointer$.base_153| |c_~#arr~0.base| (store .cse43 .cse15 (select .cse44 .cse15))) |v_#memory_$Pointer$.base_150|) (= (store |v_#memory_$Pointer$.base_150| |c_~#arr~0.base| (store .cse44 .cse13 (select .cse42 .cse13))) |v_#memory_$Pointer$.base_151|) (= (store |v_#memory_$Pointer$.base_149| |c_~#arr~0.base| (store (select |v_#memory_$Pointer$.base_149| |c_~#arr~0.base|) .cse16 (select .cse43 .cse16))) |v_#memory_$Pointer$.base_153|) (= (let ((.cse45 (store |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base| (let ((.cse46 (let ((.cse47 (store (select |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base|) .cse19 (select (select |v_#memory_$Pointer$.base_154| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse40)))) (store .cse47 .cse26 (select (select (store |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base| .cse47) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse39))))) (store .cse46 .cse28 (select (select (store |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base| .cse46) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse37)))))) (store .cse45 |c_~#top~0.base| (store (select .cse45 |c_~#top~0.base|) .cse17 (select (select |v_#memory_$Pointer$.base_149| |c_~#top~0.base|) .cse17)))) |v_#memory_$Pointer$.base_149|) (= (store |v_#memory_$Pointer$.base_156| |c_~#__CS_thread_status~0.base| (store .cse48 .cse24 (select .cse49 .cse24))) |v_#memory_$Pointer$.base_146|) (= (store |v_#memory_$Pointer$.base_152| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.base_152| |c_~#m~0.base|) .cse6 (select (select |v_#memory_$Pointer$.base_147| |c_~#m~0.base|) .cse6))) |v_#memory_$Pointer$.base_147|) (= (store |v_#memory_$Pointer$.base_262| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_262| |c_~#__CS_thread_status~0.base|) .cse25 (select .cse48 .cse25))) |v_#memory_$Pointer$.base_156|) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_148| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.base_148| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.base| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|)))) (= (store |v_#memory_$Pointer$.base_146| |c_~#__CS_thread_status~0.base| (store .cse49 .cse22 (select (select |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_status~0.base|) .cse22))) |v_#memory_$Pointer$.base_154|)))) (<= 2 |c_ULTIMATE.start_main_~i~2#1|) (exists ((v_~__CS_thread~0.offset_40 (Array Int Int))) (= (store v_~__CS_thread~0.offset_40 0 |#funAddr~main_thread.offset|) c_~__CS_thread~0.offset)) (<= 5 |c_ULTIMATE.start_main_~j~2#1|) (= c_~__CS_round~0 0) (= c_~__CS_thread_index~0 0))) is different from false [2023-11-25 00:05:10,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1233130430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:10,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:05:10,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 9 [2023-11-25 00:05:10,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81949370] [2023-11-25 00:05:10,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:10,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:05:10,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:05:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:05:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2023-11-25 00:05:10,306 INFO L87 Difference]: Start difference. First operand 196 states and 308 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:05:15,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:05:17,526 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (< 4 |c_ULTIMATE.start_main_~j~2#1|)) (.cse25 (+ |c_~#arr~0.offset| 36)) (.cse27 (+ 32 |c_~#arr~0.offset|)) (.cse20 (+ |c_~#flag~0.offset| 1)) (.cse31 (+ |c_~#arr~0.offset| 24)) (.cse29 (+ |c_~#arr~0.offset| 28)) (.cse32 (+ |c_~#arr~0.offset| 20)) (.cse33 (+ |c_~#top~0.offset| 4)) (.cse44 (+ |c_~#__CS_thread_lockedon~0.offset| 20)) (.cse55 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 20)) (.cse42 (+ |c_~#__CS_thread_lockedon~0.offset| 16)) (.cse57 (+ 16 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset|)) (.cse35 (+ |c_~#__CS_thread_lockedon~0.offset| 12)) (.cse58 (+ |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 12)) (.cse40 (+ |c_~#__CS_thread_status~0.offset| 4)) (.cse22 (+ |c_~#m~0.offset| 1)) (.cse41 (+ 3 |c_~#__CS_thread_status~0.offset|)) (.cse38 (+ 5 |c_~#__CS_thread_status~0.offset|)) (.cse45 (= c_~__CS_round~0 0)) (.cse46 (= c_~__CS_thread_index~0 0))) (and (or .cse0 (let ((.cse1 (+ |c_#StackHeapBarrier| 1)) (.cse3 (select |c_#memory_$Pointer$.base| 6)) (.cse2 (select |c_#memory_$Pointer$.offset| 6)) (.cse4 ((as const (Array Int Int)) 0))) (and (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)) (exists ((v_~__CS_u~0.m_8 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet144#1_7| Int)) (= (store (store v_~__CS_u~0.m_8 0 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet144#1_7|) 1 (select c_~__CS_u~0.m 1)) c_~__CS_u~0.m)) (exists ((v_~__CS_u~0.top_8 (Array Int Int))) (= c_~__CS_u~0.top (store (store v_~__CS_u~0.top_8 0 0) 1 0))) (<= .cse1 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) (= 0 (select .cse2 16)) (<= .cse1 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) (= (select .cse3 12) 0) (<= .cse1 |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.base|) (= ((as const (Array Int (Array Int Int))) .cse4) c_~__CS_u~0.arr) (<= .cse1 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) (exists ((v_~__CS_u~0.flag_8 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.init_#t~nondet146#1_7| Int)) (= c_~__CS_u~0.flag (store (store v_~__CS_u~0.flag_8 0 |v_ULTIMATE.start_ULTIMATE.init_#t~nondet146#1_7|) 1 (select c_~__CS_u~0.flag 1)))) (= (select .cse3 0) 0) (= (select .cse3 4) 0) (exists ((|v_#length_20| (Array Int Int))) (and (= 6 (select |v_#length_20| 5)) (= (select |v_#length_20| 3) 3) (= (select |v_#length_20| 2) 13) (= 8 (select |v_#length_20| 11)) (= (select |v_#length_20| 6) 24) (= 2 (select |v_#length_20| 1)) (= (select |v_#length_20| 10) 2) (= (store (store (store (store |v_#length_20| |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_m~0#1.base| 2) |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.base| 2) |c_#length|) (= 3 (select |v_#length_20| 4)) (= 40 (select |v_#length_20| 8)) (= (select |v_#length_20| 12) 40) (= 2 (select |v_#length_20| 9)) (= (select |v_#length_20| 7) 8))) (exists ((|v_#valid_50| (Array Int Int))) (let ((.cse5 (store |v_#valid_50| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| 1))) (let ((.cse6 (store .cse5 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| 1))) (let ((.cse7 (store .cse6 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base| 1))) (and (= (select |v_#valid_50| 6) 1) (= (select |v_#valid_50| 0) 0) (= (select .cse5 |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) 0) (= 1 (select |v_#valid_50| 10)) (= (select .cse6 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) 0) (= (select |v_#valid_50| 11) 1) (= (select |v_#valid_50| 7) 1) (= (select |v_#valid_50| 3) 1) (= (select |v_#valid_50| 1) 1) (= 1 (select |v_#valid_50| 8)) (= (select |v_#valid_50| 2) 1) (= |c_#valid| (store .cse7 |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.base| 1)) (= (select .cse7 |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.base|) 0) (= (select |v_#valid_50| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base|) 0) (= (select |v_#valid_50| 5) 1) (= (select |v_#valid_50| 4) 1) (= (select |v_#valid_50| 12) 1) (= (select |v_#valid_50| 9) 1)))))) (= (select .cse2 12) 0) (= (select .cse2 4) 0) (= (select .cse2 20) 0) (= (select .cse3 16) 0) (= 0 (select .cse3 20)) (= (select .cse3 8) 0) (= (select .cse2 0) 0) (= (select .cse2 8) 0) (exists ((|v_#memory_int_186| (Array Int (Array Int Int)))) (let ((.cse13 (select |v_#memory_int_186| 11)) (.cse12 (select |v_#memory_int_186| 9)) (.cse8 (select |v_#memory_int_186| 4)) (.cse14 (select |v_#memory_int_186| 7)) (.cse11 (select |v_#memory_int_186| 5)) (.cse10 (select |v_#memory_int_186| 1)) (.cse15 (select |v_#memory_int_186| 10)) (.cse9 (select |v_#memory_int_186| 3))) (and (= (select .cse8 1) 0) (= (select .cse9 1) 0) (= (select .cse10 1) 0) (= (select .cse11 1) 0) (= (select .cse9 0) 0) (= (select .cse11 2) 0) (= (select .cse12 1) 0) (= (store (store |v_#memory_int_186| 8 .cse4) 12 .cse4) |c_#memory_int|) (= 0 (select .cse11 5)) (= (select .cse11 0) 0) (= (select .cse13 0) 0) (= (select .cse11 3) 0) (= (select .cse8 0) 0) (= (select .cse14 0) 0) (= (select .cse13 4) 0) (= (select .cse12 0) 0) (= (select .cse8 2) 0) (= (select .cse14 4) 0) (= (select .cse15 1) 0) (= (select .cse11 4) 0) (= (select .cse10 0) 48) (= (select .cse15 0) 0) (= (select .cse9 2) 0)))) (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))))) (exists ((|v_#memory_int_193| (Array Int (Array Int Int))) (|v_#memory_int_143| (Array Int (Array Int Int))) (|v_#memory_int_144| (Array Int (Array Int Int))) (|v_#memory_int_142| (Array Int (Array Int Int)))) (let ((.cse36 (select |v_#memory_int_144| |c_~#__CS_thread_lockedon~0.base|)) (.cse43 (select |v_#memory_int_143| |c_~#__CS_thread_lockedon~0.base|))) (and (= (let ((.cse16 (let ((.cse17 (let ((.cse18 (let ((.cse19 (let ((.cse21 (let ((.cse23 (store |v_#memory_int_142| |c_~#top~0.base| (store (select |v_#memory_int_142| |c_~#top~0.base|) .cse33 (select (select |v_#memory_int_142| |c_~#__CS_cp_top~0.base|) (+ 4 |c_~#__CS_cp_top~0.offset|)))))) (store .cse23 |c_~#arr~0.base| (let ((.cse24 (let ((.cse26 (let ((.cse28 (let ((.cse30 (store (select .cse23 |c_~#arr~0.base|) .cse32 (select (select .cse23 |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 20))))) (store .cse30 .cse31 (select (select (store .cse23 |c_~#arr~0.base| .cse30) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 24)))))) (store .cse28 .cse29 (select (select (store .cse23 |c_~#arr~0.base| .cse28) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 28)))))) (store .cse26 .cse27 (select (select (store .cse23 |c_~#arr~0.base| .cse26) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 32)))))) (store .cse24 .cse25 (select (select (store .cse23 |c_~#arr~0.base| .cse24) |c_~#__CS_cp_arr~0.base|) (+ |c_~#__CS_cp_arr~0.offset| 36)))))))) (store .cse21 |c_~#m~0.base| (store (select .cse21 |c_~#m~0.base|) .cse22 (select (select .cse21 |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.offset| 1))))))) (store .cse19 |c_~#flag~0.base| (store (select .cse19 |c_~#flag~0.base|) .cse20 (select (select .cse19 |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.base|) (+ |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.offset| 1))))))) (store .cse18 |c_~#__CS_thread_born_round~0.base| (store (select .cse18 |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| 0))))) (store .cse17 |c_~#__CS_thread_status~0.base| (store (select .cse17 |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| c_~__THREAD_RUNNING~0))))) (store .cse16 |c_~#__CS_thread_allocated~0.base| (store (select .cse16 |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| 1))) |c_#memory_int|) (= (let ((.cse34 (store |v_#memory_int_193| |c_~#__CS_thread_status~0.base| (let ((.cse37 (let ((.cse39 (store (select |v_#memory_int_193| |c_~#__CS_thread_status~0.base|) .cse41 (select (select |v_#memory_int_193| |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 .cse40 (select (select (store |v_#memory_int_193| |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 .cse37 .cse38 (select (select (store |v_#memory_int_193| |c_~#__CS_thread_status~0.base| .cse37) |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 .cse34 |c_~#__CS_thread_lockedon~0.base| (store (select .cse34 |c_~#__CS_thread_lockedon~0.base|) .cse35 (select .cse36 .cse35)))) |v_#memory_int_144|) (= (store |v_#memory_int_144| |c_~#__CS_thread_lockedon~0.base| (store .cse36 .cse42 (select .cse43 .cse42))) |v_#memory_int_143|) (= |v_#memory_int_142| (store |v_#memory_int_143| |c_~#__CS_thread_lockedon~0.base| (store .cse43 .cse44 (select (select |v_#memory_int_142| |c_~#__CS_thread_lockedon~0.base|) .cse44))))))) (< 0 (+ |c_ULTIMATE.start_main_~j~2#1| 1)) (or .cse0 (and (= |c_~#m~0.offset| 0) (= 2 c_~__THREAD_FINISHED~0) (= |c_~#__CS_thread_born_round~0.offset| 0) (= |c_~#top~0.offset| 0) (= c_~__CS_ret_FINISHED~0 4) (= |c_ULTIMATE.start_main_~i~2#1| 0) (= 5 |c_~#__CS_thread_status~0.base|) (= 6 |c_~#__CS_thread_lockedon~0.base|) (= 7 |c_~#top~0.base|) (= 2 c_~__CS_ret_ERROR~0) (= 8 |c_~#arr~0.base|) (= |c_ULTIMATE.start_main_~#__CS_cp_flag~0#1.offset| 0) (= |c_~#__CS_cp_arr~0.offset| 0) (= c_~__CS_ret~0 0) (<= 1 |c_#StackHeapBarrier|) (= |c_~#arr~0.offset| 0) (= |c_~#m~0.base| 9) (= |c_ULTIMATE.start_main_~#__CS_cp_m~0#1.offset| 0) (= |c_~#__CS_thread_born_round~0.base| 4) (= |c_~#flag~0.offset| 0) (= 3 |c_~#__CS_thread_allocated~0.base|) (= |c_~#__CS_cp_top~0.offset| 0) (= c_~__CS_error~0 0) (= c_~__THREAD_UNUSED~0 0) (= 1 c_~__THREAD_RUNNING~0) (= |c_~#__CS_thread_status~0.offset| 0) (= |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.offset| 0) (= 10 |c_~#flag~0.base|) .cse45 .cse46 (= |c_~#__CS_thread_allocated~0.offset| 0) (= |c_~#__CS_cp_top~0.base| 11) (= |c_~#__CS_cp_arr~0.base| 12) (= c_~__CS_ret_PREEMPTED~0 1) (= |c_~#__CS_thread_lockedon~0.offset| 0) (= |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.offset| 0))) (exists ((|v_#memory_$Pointer$.offset_148| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_149| (Array Int (Array Int Int))) (|v_#memory_$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$.offset_262| (Array Int (Array Int Int))) (|v_#memory_$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$.offset_144| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_145| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_146| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_147| (Array Int (Array Int Int)))) (let ((.cse47 (select |v_#memory_$Pointer$.offset_153| |c_~#arr~0.base|)) (.cse50 (select |v_#memory_$Pointer$.offset_154| |c_~#arr~0.base|)) (.cse52 (select |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base|)) (.cse51 (select |v_#memory_$Pointer$.offset_152| |c_~#__CS_thread_status~0.base|)) (.cse48 (select |v_#memory_$Pointer$.offset_156| |c_~#arr~0.base|)) (.cse49 (select |v_#memory_$Pointer$.offset_151| |c_~#arr~0.base|))) (and (= (store |v_#memory_$Pointer$.offset_149| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.offset_149| |c_~#m~0.base|) .cse22 (select (select |v_#memory_$Pointer$.offset_144| |c_~#m~0.base|) .cse22))) |v_#memory_$Pointer$.offset_144|) (= (store |v_#memory_$Pointer$.offset_148| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_148| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.offset_145| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|))) |v_#memory_$Pointer$.offset_145|) (= |v_#memory_$Pointer$.offset_153| (store |v_#memory_$Pointer$.offset_155| |c_~#arr~0.base| (store (select |v_#memory_$Pointer$.offset_155| |c_~#arr~0.base|) .cse32 (select .cse47 .cse32)))) (= (store |v_#memory_$Pointer$.offset_153| |c_~#arr~0.base| (store .cse47 .cse31 (select .cse48 .cse31))) |v_#memory_$Pointer$.offset_156|) (= (store |v_#memory_$Pointer$.offset_151| |c_~#arr~0.base| (store .cse49 .cse27 (select .cse50 .cse27))) |v_#memory_$Pointer$.offset_154|) (= |v_#memory_$Pointer$.offset_146| (store |v_#memory_$Pointer$.offset_144| |c_~#flag~0.base| (store (select |v_#memory_$Pointer$.offset_144| |c_~#flag~0.base|) .cse20 (select (select |v_#memory_$Pointer$.offset_146| |c_~#flag~0.base|) .cse20)))) (= |v_#memory_$Pointer$.offset_148| (store |v_#memory_$Pointer$.offset_146| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.offset_146| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.offset_148| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|)))) (= (store |v_#memory_$Pointer$.offset_145| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.offset_145| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.offset| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|))) |c_#memory_$Pointer$.offset|) (= (store |v_#memory_$Pointer$.offset_152| |c_~#__CS_thread_status~0.base| (store .cse51 .cse38 (select (select |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_status~0.base|) .cse38))) |v_#memory_$Pointer$.offset_147|) (= (store |v_#memory_$Pointer$.offset_262| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.offset_262| |c_~#__CS_thread_status~0.base|) .cse41 (select .cse52 .cse41))) |v_#memory_$Pointer$.offset_150|) (= (let ((.cse53 (store |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base| (let ((.cse54 (let ((.cse56 (store (select |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base|) .cse35 (select (select |v_#memory_$Pointer$.offset_147| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse58)))) (store .cse56 .cse42 (select (select (store |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base| .cse56) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse57))))) (store .cse54 .cse44 (select (select (store |v_#memory_$Pointer$.offset_147| |c_~#__CS_thread_lockedon~0.base| .cse54) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse55)))))) (store .cse53 |c_~#top~0.base| (store (select .cse53 |c_~#top~0.base|) .cse33 (select (select |v_#memory_$Pointer$.offset_155| |c_~#top~0.base|) .cse33)))) |v_#memory_$Pointer$.offset_155|) (= |v_#memory_$Pointer$.offset_149| (store |v_#memory_$Pointer$.offset_154| |c_~#arr~0.base| (store .cse50 .cse25 (select (select |v_#memory_$Pointer$.offset_149| |c_~#arr~0.base|) .cse25)))) (= |v_#memory_$Pointer$.offset_152| (store |v_#memory_$Pointer$.offset_150| |c_~#__CS_thread_status~0.base| (store .cse52 .cse40 (select .cse51 .cse40)))) (= |v_#memory_$Pointer$.offset_151| (store |v_#memory_$Pointer$.offset_156| |c_~#arr~0.base| (store .cse48 .cse29 (select .cse49 .cse29))))))) (exists ((v_~__CS_thread~0.base_40 (Array Int Int))) (= c_~__CS_thread~0.base (store v_~__CS_thread~0.base_40 0 |#funAddr~main_thread.base|))) (= (select (select |c_#memory_int| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|) |c_ULTIMATE.start_main_#t~mem104#1|) (exists ((|v_#memory_$Pointer$.base_152| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_262| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_151| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_150| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_149| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_148| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_147| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_146| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_156| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_145| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_144| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_155| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_154| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_153| (Array Int (Array Int Int)))) (let ((.cse59 (select |v_#memory_$Pointer$.base_155| |c_~#arr~0.base|)) (.cse62 (select |v_#memory_$Pointer$.base_150| |c_~#arr~0.base|)) (.cse60 (select |v_#memory_$Pointer$.base_151| |c_~#arr~0.base|)) (.cse61 (select |v_#memory_$Pointer$.base_153| |c_~#arr~0.base|)) (.cse66 (select |v_#memory_$Pointer$.base_156| |c_~#__CS_thread_status~0.base|)) (.cse67 (select |v_#memory_$Pointer$.base_146| |c_~#__CS_thread_status~0.base|))) (and (= (store |v_#memory_$Pointer$.base_144| |c_~#__CS_thread_born_round~0.base| (store (select |v_#memory_$Pointer$.base_144| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset| (select (select |v_#memory_$Pointer$.base_145| |c_~#__CS_thread_born_round~0.base|) |c_~#__CS_thread_born_round~0.offset|))) |v_#memory_$Pointer$.base_145|) (= (store |v_#memory_$Pointer$.base_155| |c_~#arr~0.base| (store .cse59 .cse25 (select (select |v_#memory_$Pointer$.base_152| |c_~#arr~0.base|) .cse25))) |v_#memory_$Pointer$.base_152|) (= |v_#memory_$Pointer$.base_148| (store |v_#memory_$Pointer$.base_145| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_145| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset| (select (select |v_#memory_$Pointer$.base_148| |c_~#__CS_thread_status~0.base|) |c_~#__CS_thread_status~0.offset|)))) (= (store |v_#memory_$Pointer$.base_151| |c_~#arr~0.base| (store .cse60 .cse27 (select .cse59 .cse27))) |v_#memory_$Pointer$.base_155|) (= (store |v_#memory_$Pointer$.base_147| |c_~#flag~0.base| (store (select |v_#memory_$Pointer$.base_147| |c_~#flag~0.base|) .cse20 (select (select |v_#memory_$Pointer$.base_144| |c_~#flag~0.base|) .cse20))) |v_#memory_$Pointer$.base_144|) (= (store |v_#memory_$Pointer$.base_153| |c_~#arr~0.base| (store .cse61 .cse31 (select .cse62 .cse31))) |v_#memory_$Pointer$.base_150|) (= (store |v_#memory_$Pointer$.base_150| |c_~#arr~0.base| (store .cse62 .cse29 (select .cse60 .cse29))) |v_#memory_$Pointer$.base_151|) (= (store |v_#memory_$Pointer$.base_149| |c_~#arr~0.base| (store (select |v_#memory_$Pointer$.base_149| |c_~#arr~0.base|) .cse32 (select .cse61 .cse32))) |v_#memory_$Pointer$.base_153|) (= (let ((.cse63 (store |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base| (let ((.cse64 (let ((.cse65 (store (select |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base|) .cse35 (select (select |v_#memory_$Pointer$.base_154| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse58)))) (store .cse65 .cse42 (select (select (store |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base| .cse65) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse57))))) (store .cse64 .cse44 (select (select (store |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_lockedon~0.base| .cse64) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base|) .cse55)))))) (store .cse63 |c_~#top~0.base| (store (select .cse63 |c_~#top~0.base|) .cse33 (select (select |v_#memory_$Pointer$.base_149| |c_~#top~0.base|) .cse33)))) |v_#memory_$Pointer$.base_149|) (= (store |v_#memory_$Pointer$.base_156| |c_~#__CS_thread_status~0.base| (store .cse66 .cse40 (select .cse67 .cse40))) |v_#memory_$Pointer$.base_146|) (= (store |v_#memory_$Pointer$.base_152| |c_~#m~0.base| (store (select |v_#memory_$Pointer$.base_152| |c_~#m~0.base|) .cse22 (select (select |v_#memory_$Pointer$.base_147| |c_~#m~0.base|) .cse22))) |v_#memory_$Pointer$.base_147|) (= (store |v_#memory_$Pointer$.base_262| |c_~#__CS_thread_status~0.base| (store (select |v_#memory_$Pointer$.base_262| |c_~#__CS_thread_status~0.base|) .cse41 (select .cse66 .cse41))) |v_#memory_$Pointer$.base_156|) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_148| |c_~#__CS_thread_allocated~0.base| (store (select |v_#memory_$Pointer$.base_148| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset| (select (select |c_#memory_$Pointer$.base| |c_~#__CS_thread_allocated~0.base|) |c_~#__CS_thread_allocated~0.offset|)))) (= (store |v_#memory_$Pointer$.base_146| |c_~#__CS_thread_status~0.base| (store .cse67 .cse38 (select (select |v_#memory_$Pointer$.base_154| |c_~#__CS_thread_status~0.base|) .cse38))) |v_#memory_$Pointer$.base_154|)))) (<= 2 |c_ULTIMATE.start_main_~i~2#1|) (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)) (<= 5 |c_ULTIMATE.start_main_~j~2#1|) .cse45 .cse46)) is different from false [2023-11-25 00:05:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:18,762 INFO L93 Difference]: Finished difference Result 382 states and 601 transitions. [2023-11-25 00:05:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:05:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 71 [2023-11-25 00:05:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:18,767 INFO L225 Difference]: With dead ends: 382 [2023-11-25 00:05:18,768 INFO L226 Difference]: Without dead ends: 196 [2023-11-25 00:05:18,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=28, Invalid=50, Unknown=2, NotChecked=30, Total=110 [2023-11-25 00:05:18,770 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:18,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 948 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 1 Unknown, 77 Unchecked, 3.3s Time] [2023-11-25 00:05:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-25 00:05:18,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-25 00:05:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 113 states have (on average 1.424778761061947) internal successors, (161), 115 states have internal predecessors, (161), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-25 00:05:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 307 transitions. [2023-11-25 00:05:18,806 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 307 transitions. Word has length 71 [2023-11-25 00:05:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:18,806 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 307 transitions. [2023-11-25 00:05:18,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-25 00:05:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 307 transitions. [2023-11-25 00:05:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-25 00:05:18,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:18,810 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:18,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:19,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:19,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:05:19,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash 142147865, now seen corresponding path program 1 times [2023-11-25 00:05:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:05:19,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771711722] [2023-11-25 00:05:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:19,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:05:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-25 00:05:19,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:05:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771711722] [2023-11-25 00:05:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771711722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:05:19,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908991418] [2023-11-25 00:05:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:19,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:05:19,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:19,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:05:19,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c457def4-585c-40ab-86e9-5aa87ad16d9b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:05:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:19,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:19,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-25 00:05:19,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-25 00:05:19,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908991418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [229331607] [2023-11-25 00:05:19,979 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2023-11-25 00:05:19,979 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:05:19,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:05:19,980 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:05:19,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs