./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:17,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:18,016 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:56:18,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:18,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:18,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:18,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:18,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:18,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:18,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:18,056 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:18,056 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:18,057 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:18,058 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:18,058 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:18,059 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:18,059 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:18,060 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:18,061 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:18,061 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:18,062 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:18,063 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:18,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:18,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:18,065 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:56:18,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:18,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:56:18,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:18,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:18,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:18,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:18,068 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:56:18,069 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:56:18,069 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:56:18,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:18,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:18,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:18,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:18,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:18,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:18,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:18,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:18,073 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:18,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:18,073 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:18,073 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:18,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:18,074 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_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b [2023-11-12 00:56:18,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:18,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:18,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:18,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:18,403 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:18,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-12 00:56:21,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:21,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:21,752 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-11-12 00:56:21,775 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/data/d2b330272/e9b1b7a5c1ef40b99fa530e0a9a78327/FLAGc1e7b87aa [2023-11-12 00:56:21,789 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/data/d2b330272/e9b1b7a5c1ef40b99fa530e0a9a78327 [2023-11-12 00:56:21,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:21,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:21,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:21,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:21,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:21,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:21" (1/1) ... [2023-11-12 00:56:21,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a54ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:21, skipping insertion in model container [2023-11-12 00:56:21,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:21" (1/1) ... [2023-11-12 00:56:21,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:22,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:22,285 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:22,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:22,378 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:22,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22 WrapperNode [2023-11-12 00:56:22,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:22,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:22,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:22,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:22,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,435 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2023-11-12 00:56:22,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:22,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:22,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:22,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:22,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:22,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:22,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:22,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:22,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (1/1) ... [2023-11-12 00:56:22,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:22,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:22,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:22,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8ea2d4-0f2e-4db0-a5f8-6c9a8a6f7148/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:56:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-12 00:56:22,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-12 00:56:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:56:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:56:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:56:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:22,579 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:56:22,796 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:22,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:23,154 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:23,316 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:23,316 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:56:23,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:23 BoogieIcfgContainer [2023-11-12 00:56:23,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:23,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:23,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:23,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:23,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:21" (1/3) ... [2023-11-12 00:56:23,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd56eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:23, skipping insertion in model container [2023-11-12 00:56:23,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:22" (2/3) ... [2023-11-12 00:56:23,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd56eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:23, skipping insertion in model container [2023-11-12 00:56:23,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:23" (3/3) ... [2023-11-12 00:56:23,342 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-11-12 00:56:23,352 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:56:23,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:23,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-12 00:56:23,364 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:56:23,464 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:56:23,500 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:56:23,530 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 111 transitions, 226 flow [2023-11-12 00:56:23,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 111 transitions, 226 flow [2023-11-12 00:56:23,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 111 transitions, 226 flow [2023-11-12 00:56:23,611 INFO L124 PetriNetUnfolderBase]: 11/122 cut-off events. [2023-11-12 00:56:23,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 00:56:23,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 122 events. 11/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 172 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2023-11-12 00:56:23,622 INFO L119 LiptonReduction]: Number of co-enabled transitions 2296 [2023-11-12 00:56:27,601 INFO L134 LiptonReduction]: Checked pairs total: 2703 [2023-11-12 00:56:27,601 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-11-12 00:56:27,611 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 31 transitions, 66 flow [2023-11-12 00:56:27,641 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 91 states have (on average 2.3516483516483517) internal successors, (214), 111 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:27,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:27,670 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;@60230b51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:27,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-12 00:56:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 91 states have (on average 2.3516483516483517) internal successors, (214), 111 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:56:27,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:27,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:56:27,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 00:56:27,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash 545421073, now seen corresponding path program 1 times [2023-11-12 00:56:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992898188] [2023-11-12 00:56:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:27,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:27,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992898188] [2023-11-12 00:56:27,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992898188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:27,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:27,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:56:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191568761] [2023-11-12 00:56:27,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:27,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:28,002 INFO L87 Difference]: Start difference. First operand has 112 states, 91 states have (on average 2.3516483516483517) internal successors, (214), 111 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:28,101 INFO L93 Difference]: Finished difference Result 79 states and 140 transitions. [2023-11-12 00:56:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:56:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:56:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:28,115 INFO L225 Difference]: With dead ends: 79 [2023-11-12 00:56:28,116 INFO L226 Difference]: Without dead ends: 79 [2023-11-12 00:56:28,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:28,122 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:28,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:56:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-12 00:56:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-12 00:56:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 72 states have (on average 1.9444444444444444) internal successors, (140), 78 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 140 transitions. [2023-11-12 00:56:28,183 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 140 transitions. Word has length 5 [2023-11-12 00:56:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:28,184 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 140 transitions. [2023-11-12 00:56:28,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 140 transitions. [2023-11-12 00:56:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:56:28,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:28,186 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 00:56:28,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:56:28,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 00:56:28,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:28,188 INFO L85 PathProgramCache]: Analyzing trace with hash -271719423, now seen corresponding path program 1 times [2023-11-12 00:56:28,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:28,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935251409] [2023-11-12 00:56:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:28,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:56:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:28,282 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:56:28,282 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:56:28,284 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-12 00:56:28,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-12 00:56:28,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-12 00:56:28,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-12 00:56:28,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-12 00:56:28,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-12 00:56:28,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-12 00:56:28,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-12 00:56:28,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-12 00:56:28,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-12 00:56:28,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-12 00:56:28,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-12 00:56:28,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-12 00:56:28,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-12 00:56:28,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-12 00:56:28,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-12 00:56:28,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-12 00:56:28,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-12 00:56:28,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-12 00:56:28,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-12 00:56:28,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-12 00:56:28,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:56:28,295 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 00:56:28,297 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:56:28,297 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 00:56:28,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:56:28,396 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:56:28,396 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 194 transitions, 398 flow [2023-11-12 00:56:28,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 194 transitions, 398 flow [2023-11-12 00:56:28,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 194 transitions, 398 flow [2023-11-12 00:56:28,464 INFO L124 PetriNetUnfolderBase]: 21/218 cut-off events. [2023-11-12 00:56:28,464 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 00:56:28,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 218 events. 21/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 611 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2023-11-12 00:56:28,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 18204 [2023-11-12 00:56:42,347 INFO L134 LiptonReduction]: Checked pairs total: 42001 [2023-11-12 00:56:42,348 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-11-12 00:56:42,350 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 71 transitions, 152 flow [2023-11-12 00:56:42,602 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4845 states, 4594 states have (on average 3.22202873313017) internal successors, (14802), 4844 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:42,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:42,606 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;@60230b51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:42,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-12 00:56:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 4845 states, 4594 states have (on average 3.22202873313017) internal successors, (14802), 4844 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:42,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:56:42,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:42,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:56:42,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-12 00:56:42,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash 991872041, now seen corresponding path program 1 times [2023-11-12 00:56:42,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:42,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567240598] [2023-11-12 00:56:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:42,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:42,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:42,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567240598] [2023-11-12 00:56:42,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567240598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:42,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:42,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:56:42,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227981160] [2023-11-12 00:56:42,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:42,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:56:42,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:56:42,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:56:42,745 INFO L87 Difference]: Start difference. First operand has 4845 states, 4594 states have (on average 3.22202873313017) internal successors, (14802), 4844 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:42,958 INFO L93 Difference]: Finished difference Result 2979 states and 8747 transitions. [2023-11-12 00:56:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:56:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:56:42,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:43,002 INFO L225 Difference]: With dead ends: 2979 [2023-11-12 00:56:43,002 INFO L226 Difference]: Without dead ends: 2979 [2023-11-12 00:56:43,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:56:43,004 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:43,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:56:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2023-11-12 00:56:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2979. [2023-11-12 00:56:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2930 states have (on average 2.9853242320819113) internal successors, (8747), 2978 states have internal predecessors, (8747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 8747 transitions. [2023-11-12 00:56:43,215 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 8747 transitions. Word has length 5 [2023-11-12 00:56:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:43,216 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 8747 transitions. [2023-11-12 00:56:43,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 8747 transitions. [2023-11-12 00:56:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:56:43,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:43,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:56:43,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:56:43,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-12 00:56:43,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:43,219 INFO L85 PathProgramCache]: Analyzing trace with hash 683263064, now seen corresponding path program 1 times [2023-11-12 00:56:43,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:43,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279739409] [2023-11-12 00:56:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:43,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:43,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279739409] [2023-11-12 00:56:43,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279739409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:43,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:43,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:56:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604388946] [2023-11-12 00:56:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:43,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:43,332 INFO L87 Difference]: Start difference. First operand 2979 states and 8747 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:43,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:43,593 INFO L93 Difference]: Finished difference Result 3066 states and 8981 transitions. [2023-11-12 00:56:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:56:43,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:56:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:43,622 INFO L225 Difference]: With dead ends: 3066 [2023-11-12 00:56:43,623 INFO L226 Difference]: Without dead ends: 3066 [2023-11-12 00:56:43,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:43,624 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:43,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:56:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2023-11-12 00:56:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3061. [2023-11-12 00:56:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3012 states have (on average 2.9770916334661353) internal successors, (8967), 3060 states have internal predecessors, (8967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8967 transitions. [2023-11-12 00:56:43,746 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8967 transitions. Word has length 6 [2023-11-12 00:56:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:43,747 INFO L495 AbstractCegarLoop]: Abstraction has 3061 states and 8967 transitions. [2023-11-12 00:56:43,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8967 transitions. [2023-11-12 00:56:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:56:43,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:43,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:43,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:56:43,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-12 00:56:43,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash -327445427, now seen corresponding path program 1 times [2023-11-12 00:56:43,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137196679] [2023-11-12 00:56:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:43,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137196679] [2023-11-12 00:56:43,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137196679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:43,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:43,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:56:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731154831] [2023-11-12 00:56:43,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:43,871 INFO L87 Difference]: Start difference. First operand 3061 states and 8967 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:44,204 INFO L93 Difference]: Finished difference Result 3061 states and 8843 transitions. [2023-11-12 00:56:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:56:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:56:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:44,235 INFO L225 Difference]: With dead ends: 3061 [2023-11-12 00:56:44,235 INFO L226 Difference]: Without dead ends: 3061 [2023-11-12 00:56:44,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:44,237 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:44,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 30 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:56:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2023-11-12 00:56:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 3061. [2023-11-12 00:56:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3005 states have (on average 2.942762063227953) internal successors, (8843), 3060 states have internal predecessors, (8843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8843 transitions. [2023-11-12 00:56:44,373 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8843 transitions. Word has length 10 [2023-11-12 00:56:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:44,374 INFO L495 AbstractCegarLoop]: Abstraction has 3061 states and 8843 transitions. [2023-11-12 00:56:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8843 transitions. [2023-11-12 00:56:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:56:44,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:44,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:56:44,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:56:44,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-12 00:56:44,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash -327539357, now seen corresponding path program 1 times [2023-11-12 00:56:44,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:44,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895581764] [2023-11-12 00:56:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:44,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:44,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895581764] [2023-11-12 00:56:44,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895581764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:44,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:44,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:56:44,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538984201] [2023-11-12 00:56:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:44,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:56:44,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:44,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:56:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:56:44,574 INFO L87 Difference]: Start difference. First operand 3061 states and 8843 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:45,268 INFO L93 Difference]: Finished difference Result 3499 states and 10053 transitions. [2023-11-12 00:56:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:56:45,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:56:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:45,311 INFO L225 Difference]: With dead ends: 3499 [2023-11-12 00:56:45,311 INFO L226 Difference]: Without dead ends: 3499 [2023-11-12 00:56:45,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:56:45,313 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 66 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:45,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 73 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:56:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2023-11-12 00:56:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 3382. [2023-11-12 00:56:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3326 states have (on average 2.926939266386049) internal successors, (9735), 3381 states have internal predecessors, (9735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 9735 transitions. [2023-11-12 00:56:45,495 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 9735 transitions. Word has length 10 [2023-11-12 00:56:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:45,495 INFO L495 AbstractCegarLoop]: Abstraction has 3382 states and 9735 transitions. [2023-11-12 00:56:45,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:56:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 9735 transitions. [2023-11-12 00:56:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:56:45,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:45,497 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 00:56:45,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:56:45,498 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-12 00:56:45,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1162941394, now seen corresponding path program 1 times [2023-11-12 00:56:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:45,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57056314] [2023-11-12 00:56:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:45,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:56:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:56:45,540 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:56:45,540 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:56:45,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-12 00:56:45,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-12 00:56:45,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-12 00:56:45,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-12 00:56:45,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-12 00:56:45,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-12 00:56:45,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-12 00:56:45,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-12 00:56:45,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-12 00:56:45,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-12 00:56:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-12 00:56:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-12 00:56:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-12 00:56:45,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-12 00:56:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-12 00:56:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-12 00:56:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-12 00:56:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-12 00:56:45,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-12 00:56:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-12 00:56:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-12 00:56:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-11-12 00:56:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-11-12 00:56:45,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-12 00:56:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-12 00:56:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-12 00:56:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-12 00:56:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-12 00:56:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-12 00:56:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-12 00:56:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-12 00:56:45,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:56:45,549 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 00:56:45,549 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:56:45,549 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 00:56:45,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:56:45,616 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:56:45,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 277 transitions, 572 flow [2023-11-12 00:56:45,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 277 transitions, 572 flow [2023-11-12 00:56:45,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 277 transitions, 572 flow [2023-11-12 00:56:45,699 INFO L124 PetriNetUnfolderBase]: 31/314 cut-off events. [2023-11-12 00:56:45,700 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 00:56:45,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 314 events. 31/314 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1120 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 259. Up to 8 conditions per place. [2023-11-12 00:56:45,737 INFO L119 LiptonReduction]: Number of co-enabled transitions 47724 [2023-11-12 00:57:03,402 INFO L134 LiptonReduction]: Checked pairs total: 118373 [2023-11-12 00:57:03,402 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-11-12 00:57:03,405 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 103 transitions, 224 flow [2023-11-12 00:57:09,940 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135772 states, 132981 states have (on average 4.2474112843188125) internal successors, (564825), 135771 states have internal predecessors, (564825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:09,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:57:09,954 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;@60230b51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:57:09,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-12 00:57:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 135772 states, 132981 states have (on average 4.2474112843188125) internal successors, (564825), 135771 states have internal predecessors, (564825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:57:10,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:10,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:57:10,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 00:57:10,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1592826509, now seen corresponding path program 1 times [2023-11-12 00:57:10,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190976817] [2023-11-12 00:57:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:10,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190976817] [2023-11-12 00:57:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190976817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:10,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:10,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:57:10,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861565619] [2023-11-12 00:57:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:10,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:57:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:57:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:57:11,201 INFO L87 Difference]: Start difference. First operand has 135772 states, 132981 states have (on average 4.2474112843188125) internal successors, (564825), 135771 states have internal predecessors, (564825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)