./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/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_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/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_ca0dde6f-736c-4fad-9ac7-944f9505c90f/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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:48:22,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:48:22,875 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:48:22,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:48:22,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:48:22,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:48:22,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:48:22,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:48:22,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:48:22,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:48:22,914 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:48:22,915 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:48:22,916 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:48:22,916 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:48:22,917 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:48:22,918 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:48:22,918 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:48:22,919 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:48:22,919 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:48:22,920 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:48:22,921 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:48:22,921 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:48:22,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:48:22,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:48:22,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:48:22,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:48:22,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:48:22,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:48:22,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:48:22,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:48:22,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:48:22,927 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:48:22,928 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:48:22,928 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:48:22,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:48:22,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:48:22,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:48:22,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:48:22,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:22,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:48:22,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:48:22,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:48:22,956 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:48:22,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:48:22,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:48:22,957 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:48:22,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:48:22,958 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_ca0dde6f-736c-4fad-9ac7-944f9505c90f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 [2023-11-12 00:48:23,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:48:23,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:48:23,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:48:23,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:48:23,416 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:48:23,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-12 00:48:26,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:48:27,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:48:27,207 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2023-11-12 00:48:27,234 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/data/f3fbed73e/cecf95b0b2b34871860c4353f1115301/FLAGf625cf31a [2023-11-12 00:48:27,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/data/f3fbed73e/cecf95b0b2b34871860c4353f1115301 [2023-11-12 00:48:27,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:48:27,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:48:27,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:27,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:48:27,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:48:27,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134495f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27, skipping insertion in model container [2023-11-12 00:48:27,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:48:27,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:27,748 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:48:27,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:27,876 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:48:27,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27 WrapperNode [2023-11-12 00:48:27,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:27,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:27,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:48:27,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:48:27,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,938 INFO L138 Inliner]: procedures = 171, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 89 [2023-11-12 00:48:27,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:27,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:48:27,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:48:27,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:48:27,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,984 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:27,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:48:28,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:48:28,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:48:28,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:48:28,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (1/1) ... [2023-11-12 00:48:28,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:28,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:48:28,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:48:28,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:48:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:48:28,133 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-12 00:48:28,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-12 00:48:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:48:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:48:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:48:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:48:28,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:48:28,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:48:28,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:48:28,140 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 00:48:28,365 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:48:28,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:48:28,586 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:48:28,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:48:28,662 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:48:28,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:28 BoogieIcfgContainer [2023-11-12 00:48:28,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:48:28,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:48:28,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:48:28,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:48:28,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:48:27" (1/3) ... [2023-11-12 00:48:28,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea8675f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:28, skipping insertion in model container [2023-11-12 00:48:28,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:27" (2/3) ... [2023-11-12 00:48:28,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea8675f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:28, skipping insertion in model container [2023-11-12 00:48:28,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:28" (3/3) ... [2023-11-12 00:48:28,675 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-11-12 00:48:28,686 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:48:28,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:48:28,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 00:48:28,696 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:48:28,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:48:28,852 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:48:28,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 94 transitions, 192 flow [2023-11-12 00:48:28,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 94 transitions, 192 flow [2023-11-12 00:48:28,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 94 transitions, 192 flow [2023-11-12 00:48:28,946 INFO L124 PetriNetUnfolderBase]: 10/105 cut-off events. [2023-11-12 00:48:28,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 00:48:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 10/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-11-12 00:48:28,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2023-11-12 00:48:33,384 INFO L134 LiptonReduction]: Checked pairs total: 1421 [2023-11-12 00:48:33,384 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-11-12 00:48:33,395 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 30 flow [2023-11-12 00:48:33,412 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 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 00:48:33,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:48:33,443 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;@3522eed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:48:33,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-12 00:48:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 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 00:48:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:33,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:33,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:33,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 00:48:33,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash 446249714, now seen corresponding path program 1 times [2023-11-12 00:48:33,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:33,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388894111] [2023-11-12 00:48:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:33,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:33,910 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 00:48:33,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:33,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388894111] [2023-11-12 00:48:33,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388894111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:33,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:33,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:33,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680450174] [2023-11-12 00:48:33,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:33,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:33,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:33,958 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 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), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:34,012 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2023-11-12 00:48:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:34,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:34,028 INFO L225 Difference]: With dead ends: 23 [2023-11-12 00:48:34,028 INFO L226 Difference]: Without dead ends: 23 [2023-11-12 00:48:34,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:34,035 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:34,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:34,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-12 00:48:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-12 00:48:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.9) internal successors, (38), 22 states have internal predecessors, (38), 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 00:48:34,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2023-11-12 00:48:34,084 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2023-11-12 00:48:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:34,087 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2023-11-12 00:48:34,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2023-11-12 00:48:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:34,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:34,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:34,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:48:34,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 00:48:34,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash 446249780, now seen corresponding path program 1 times [2023-11-12 00:48:34,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:34,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545283727] [2023-11-12 00:48:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:34,317 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 00:48:34,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:34,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545283727] [2023-11-12 00:48:34,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545283727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:34,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:34,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:34,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282109574] [2023-11-12 00:48:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:34,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:34,323 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:34,354 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2023-11-12 00:48:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:34,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:34,356 INFO L225 Difference]: With dead ends: 19 [2023-11-12 00:48:34,357 INFO L226 Difference]: Without dead ends: 19 [2023-11-12 00:48:34,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:34,360 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:34,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-12 00:48:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-12 00:48:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 00:48:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2023-11-12 00:48:34,375 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 5 [2023-11-12 00:48:34,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:34,375 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2023-11-12 00:48:34,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2023-11-12 00:48:34,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:34,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:34,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:34,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:48:34,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 00:48:34,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 446249637, now seen corresponding path program 1 times [2023-11-12 00:48:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:34,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545051236] [2023-11-12 00:48:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:34,523 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 00:48:34,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545051236] [2023-11-12 00:48:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545051236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:34,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424986851] [2023-11-12 00:48:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:34,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:34,527 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:34,547 INFO L93 Difference]: Finished difference Result 15 states and 24 transitions. [2023-11-12 00:48:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:34,548 INFO L225 Difference]: With dead ends: 15 [2023-11-12 00:48:34,548 INFO L226 Difference]: Without dead ends: 15 [2023-11-12 00:48:34,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:34,550 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:34,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-12 00:48:34,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-12 00:48:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 00:48:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2023-11-12 00:48:34,555 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 5 [2023-11-12 00:48:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:34,556 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2023-11-12 00:48:34,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2023-11-12 00:48:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:48:34,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:34,557 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 00:48:34,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:48:34,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 00:48:34,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:34,559 INFO L85 PathProgramCache]: Analyzing trace with hash 948763446, now seen corresponding path program 1 times [2023-11-12 00:48:34,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:34,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483674817] [2023-11-12 00:48:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:34,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:34,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:48:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:34,615 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:48:34,615 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:48:34,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-12 00:48:34,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-12 00:48:34,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-12 00:48:34,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-12 00:48:34,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-12 00:48:34,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-12 00:48:34,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-12 00:48:34,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-12 00:48:34,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-12 00:48:34,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:48:34,625 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 00:48:34,628 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:48:34,628 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 00:48:34,671 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:48:34,677 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:48:34,677 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 155 transitions, 320 flow [2023-11-12 00:48:34,678 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 155 transitions, 320 flow [2023-11-12 00:48:34,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 155 transitions, 320 flow [2023-11-12 00:48:34,735 INFO L124 PetriNetUnfolderBase]: 19/179 cut-off events. [2023-11-12 00:48:34,735 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 00:48:34,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 179 events. 19/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 383 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2023-11-12 00:48:34,751 INFO L119 LiptonReduction]: Number of co-enabled transitions 10680 [2023-11-12 00:48:40,123 INFO L134 LiptonReduction]: Checked pairs total: 13746 [2023-11-12 00:48:40,123 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-11-12 00:48:40,125 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 34 transitions, 78 flow [2023-11-12 00:48:40,194 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 754 states, 701 states have (on average 3.3338088445078458) internal successors, (2337), 753 states have internal predecessors, (2337), 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 00:48:40,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:48:40,196 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;@3522eed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:48:40,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 00:48:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 754 states, 701 states have (on average 3.3338088445078458) internal successors, (2337), 753 states have internal predecessors, (2337), 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 00:48:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:40,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:40,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:40,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:40,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:40,201 INFO L85 PathProgramCache]: Analyzing trace with hash 819348056, now seen corresponding path program 1 times [2023-11-12 00:48:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:40,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695473202] [2023-11-12 00:48:40,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:40,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:40,250 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 00:48:40,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695473202] [2023-11-12 00:48:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695473202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:40,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086993408] [2023-11-12 00:48:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:40,256 INFO L87 Difference]: Start difference. First operand has 754 states, 701 states have (on average 3.3338088445078458) internal successors, (2337), 753 states have internal predecessors, (2337), 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), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:40,320 INFO L93 Difference]: Finished difference Result 489 states and 1434 transitions. [2023-11-12 00:48:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:40,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:40,331 INFO L225 Difference]: With dead ends: 489 [2023-11-12 00:48:40,332 INFO L226 Difference]: Without dead ends: 489 [2023-11-12 00:48:40,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:40,333 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:40,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 24 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-12 00:48:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2023-11-12 00:48:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 477 states have (on average 3.006289308176101) internal successors, (1434), 488 states have internal predecessors, (1434), 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 00:48:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1434 transitions. [2023-11-12 00:48:40,388 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1434 transitions. Word has length 5 [2023-11-12 00:48:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:40,388 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 1434 transitions. [2023-11-12 00:48:40,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1434 transitions. [2023-11-12 00:48:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:40,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:40,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:40,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:48:40,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:40,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:40,390 INFO L85 PathProgramCache]: Analyzing trace with hash 819348216, now seen corresponding path program 1 times [2023-11-12 00:48:40,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:40,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234779425] [2023-11-12 00:48:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:40,465 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 00:48:40,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:40,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234779425] [2023-11-12 00:48:40,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234779425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:40,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:40,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:40,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487450341] [2023-11-12 00:48:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:40,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:40,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:40,468 INFO L87 Difference]: Start difference. First operand 489 states and 1434 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:40,542 INFO L93 Difference]: Finished difference Result 543 states and 1587 transitions. [2023-11-12 00:48:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:40,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:40,549 INFO L225 Difference]: With dead ends: 543 [2023-11-12 00:48:40,550 INFO L226 Difference]: Without dead ends: 543 [2023-11-12 00:48:40,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:40,551 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:40,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:40,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-11-12 00:48:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2023-11-12 00:48:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 531 states have (on average 2.9887005649717513) internal successors, (1587), 542 states have internal predecessors, (1587), 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 00:48:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1587 transitions. [2023-11-12 00:48:40,592 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1587 transitions. Word has length 5 [2023-11-12 00:48:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:40,592 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 1587 transitions. [2023-11-12 00:48:40,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:40,592 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1587 transitions. [2023-11-12 00:48:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:48:40,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:40,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:48:40,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:48:40,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:40,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash -370008286, now seen corresponding path program 1 times [2023-11-12 00:48:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:40,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412300154] [2023-11-12 00:48:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:40,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:40,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:40,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412300154] [2023-11-12 00:48:40,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412300154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:48:40,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121124584] [2023-11-12 00:48:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:40,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:48:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:48:40,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:48:40,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:48:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:40,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:48:40,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:40,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121124584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:48:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-12 00:48:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589986906] [2023-11-12 00:48:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:40,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:40,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:40,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:48:40,821 INFO L87 Difference]: Start difference. First operand 543 states and 1587 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 00:48:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:40,880 INFO L93 Difference]: Finished difference Result 489 states and 1434 transitions. [2023-11-12 00:48:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:40,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 00:48:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:40,887 INFO L225 Difference]: With dead ends: 489 [2023-11-12 00:48:40,887 INFO L226 Difference]: Without dead ends: 489 [2023-11-12 00:48:40,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:48:40,890 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:40,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 25 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-12 00:48:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2023-11-12 00:48:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 481 states have (on average 2.9812889812889813) internal successors, (1434), 488 states have internal predecessors, (1434), 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 00:48:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1434 transitions. [2023-11-12 00:48:40,960 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1434 transitions. Word has length 6 [2023-11-12 00:48:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:40,961 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 1434 transitions. [2023-11-12 00:48:40,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 00:48:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1434 transitions. [2023-11-12 00:48:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:48:40,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:40,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:48:40,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:48:41,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:41,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash -370008490, now seen corresponding path program 1 times [2023-11-12 00:48:41,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:41,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342183875] [2023-11-12 00:48:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:41,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:41,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342183875] [2023-11-12 00:48:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342183875] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:48:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615839044] [2023-11-12 00:48:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:41,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:48:41,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:48:41,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:48:41,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:48:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:41,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:48:41,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:41,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:48:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:41,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615839044] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:48:41,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:48:41,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2023-11-12 00:48:41,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735357986] [2023-11-12 00:48:41,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:41,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:48:41,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:48:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:48:41,396 INFO L87 Difference]: Start difference. First operand 489 states and 1434 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 00:48:41,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:41,447 INFO L93 Difference]: Finished difference Result 435 states and 1281 transitions. [2023-11-12 00:48:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:41,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 00:48:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:41,453 INFO L225 Difference]: With dead ends: 435 [2023-11-12 00:48:41,453 INFO L226 Difference]: Without dead ends: 435 [2023-11-12 00:48:41,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:48:41,455 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:41,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 24 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-12 00:48:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2023-11-12 00:48:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 431 states have (on average 2.97215777262181) internal successors, (1281), 434 states have internal predecessors, (1281), 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 00:48:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1281 transitions. [2023-11-12 00:48:41,479 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1281 transitions. Word has length 6 [2023-11-12 00:48:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:41,480 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 1281 transitions. [2023-11-12 00:48:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 00:48:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1281 transitions. [2023-11-12 00:48:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:41,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:41,481 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:41,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:41,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 00:48:41,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:41,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash 662701003, now seen corresponding path program 1 times [2023-11-12 00:48:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:41,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081192124] [2023-11-12 00:48:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:41,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:48:41,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:41,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081192124] [2023-11-12 00:48:41,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081192124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:41,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:41,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382162869] [2023-11-12 00:48:41,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:41,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:41,774 INFO L87 Difference]: Start difference. First operand 435 states and 1281 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:41,847 INFO L93 Difference]: Finished difference Result 395 states and 1164 transitions. [2023-11-12 00:48:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:41,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2023-11-12 00:48:41,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:41,851 INFO L225 Difference]: With dead ends: 395 [2023-11-12 00:48:41,852 INFO L226 Difference]: Without dead ends: 395 [2023-11-12 00:48:41,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:41,853 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:41,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-12 00:48:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2023-11-12 00:48:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 392 states have (on average 2.9693877551020407) internal successors, (1164), 394 states have internal predecessors, (1164), 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 00:48:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1164 transitions. [2023-11-12 00:48:41,871 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1164 transitions. Word has length 9 [2023-11-12 00:48:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:41,871 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 1164 transitions. [2023-11-12 00:48:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1164 transitions. [2023-11-12 00:48:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:41,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:41,873 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 00:48:41,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:41,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash 662700844, now seen corresponding path program 1 times [2023-11-12 00:48:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403506750] [2023-11-12 00:48:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:48:41,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403506750] [2023-11-12 00:48:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403506750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:41,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832650093] [2023-11-12 00:48:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:41,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:41,943 INFO L87 Difference]: Start difference. First operand 395 states and 1164 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:41,990 INFO L93 Difference]: Finished difference Result 355 states and 1047 transitions. [2023-11-12 00:48:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:41,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2023-11-12 00:48:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:41,994 INFO L225 Difference]: With dead ends: 355 [2023-11-12 00:48:41,994 INFO L226 Difference]: Without dead ends: 355 [2023-11-12 00:48:41,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:41,996 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:41,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-12 00:48:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2023-11-12 00:48:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 353 states have (on average 2.9660056657223794) internal successors, (1047), 354 states have internal predecessors, (1047), 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 00:48:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1047 transitions. [2023-11-12 00:48:42,013 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1047 transitions. Word has length 9 [2023-11-12 00:48:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:42,014 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 1047 transitions. [2023-11-12 00:48:42,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1047 transitions. [2023-11-12 00:48:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:42,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:42,016 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:42,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:48:42,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:42,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash 662701090, now seen corresponding path program 1 times [2023-11-12 00:48:42,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:42,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133178867] [2023-11-12 00:48:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:42,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:48:42,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133178867] [2023-11-12 00:48:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133178867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154800683] [2023-11-12 00:48:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:42,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:42,141 INFO L87 Difference]: Start difference. First operand 355 states and 1047 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:42,185 INFO L93 Difference]: Finished difference Result 315 states and 930 transitions. [2023-11-12 00:48:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2023-11-12 00:48:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:42,189 INFO L225 Difference]: With dead ends: 315 [2023-11-12 00:48:42,189 INFO L226 Difference]: Without dead ends: 315 [2023-11-12 00:48:42,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:42,190 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:42,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-12 00:48:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-11-12 00:48:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.961783439490446) internal successors, (930), 314 states have internal predecessors, (930), 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 00:48:42,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 930 transitions. [2023-11-12 00:48:42,209 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 930 transitions. Word has length 9 [2023-11-12 00:48:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:42,210 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 930 transitions. [2023-11-12 00:48:42,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 930 transitions. [2023-11-12 00:48:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:48:42,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:42,212 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 00:48:42,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:48:42,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 00:48:42,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1189905370, now seen corresponding path program 1 times [2023-11-12 00:48:42,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:42,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103040197] [2023-11-12 00:48:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:42,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:42,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:48:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:42,242 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:48:42,244 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:48:42,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 00:48:42,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 00:48:42,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 00:48:42,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 00:48:42,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 00:48:42,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 00:48:42,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-12 00:48:42,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-12 00:48:42,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-12 00:48:42,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 00:48:42,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 00:48:42,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 00:48:42,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 00:48:42,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:48:42,249 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:42,250 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:48:42,250 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 00:48:42,299 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:48:42,304 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:48:42,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 216 transitions, 450 flow [2023-11-12 00:48:42,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 216 transitions, 450 flow [2023-11-12 00:48:42,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 216 transitions, 450 flow [2023-11-12 00:48:42,419 INFO L124 PetriNetUnfolderBase]: 28/253 cut-off events. [2023-11-12 00:48:42,419 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 00:48:42,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 28/253 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 724 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-11-12 00:48:42,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 27000 [2023-11-12 00:48:48,587 INFO L134 LiptonReduction]: Checked pairs total: 37430 [2023-11-12 00:48:48,587 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-11-12 00:48:48,588 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 48 transitions, 114 flow [2023-11-12 00:48:48,958 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8494 states, 8217 states have (on average 4.426189606912499) internal successors, (36370), 8493 states have internal predecessors, (36370), 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 00:48:48,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:48:48,960 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;@3522eed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:48:48,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 00:48:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 8494 states, 8217 states have (on average 4.426189606912499) internal successors, (36370), 8493 states have internal predecessors, (36370), 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 00:48:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:48,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:48,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:48,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:48,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002059, now seen corresponding path program 1 times [2023-11-12 00:48:48,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:48,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210959288] [2023-11-12 00:48:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:49,030 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 00:48:49,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210959288] [2023-11-12 00:48:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210959288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:49,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:49,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21318545] [2023-11-12 00:48:49,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:49,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:49,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:49,063 INFO L87 Difference]: Start difference. First operand has 8494 states, 8217 states have (on average 4.426189606912499) internal successors, (36370), 8493 states have internal predecessors, (36370), 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), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:49,410 INFO L93 Difference]: Finished difference Result 4899 states and 19735 transitions. [2023-11-12 00:48:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:49,518 INFO L225 Difference]: With dead ends: 4899 [2023-11-12 00:48:49,532 INFO L226 Difference]: Without dead ends: 4899 [2023-11-12 00:48:49,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:49,535 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:49,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 36 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2023-11-12 00:48:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4899. [2023-11-12 00:48:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4851 states have (on average 4.068233353947639) internal successors, (19735), 4898 states have internal predecessors, (19735), 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 00:48:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 19735 transitions. [2023-11-12 00:48:49,884 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 19735 transitions. Word has length 5 [2023-11-12 00:48:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:49,884 INFO L495 AbstractCegarLoop]: Abstraction has 4899 states and 19735 transitions. [2023-11-12 00:48:49,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 19735 transitions. [2023-11-12 00:48:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:49,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:49,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:49,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:48:49,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:49,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002238, now seen corresponding path program 1 times [2023-11-12 00:48:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767265118] [2023-11-12 00:48:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:50,027 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 00:48:50,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767265118] [2023-11-12 00:48:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767265118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:50,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:50,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:50,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108428475] [2023-11-12 00:48:50,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:50,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:50,029 INFO L87 Difference]: Start difference. First operand 4899 states and 19735 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:50,200 INFO L93 Difference]: Finished difference Result 4355 states and 17603 transitions. [2023-11-12 00:48:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:50,354 INFO L225 Difference]: With dead ends: 4355 [2023-11-12 00:48:50,354 INFO L226 Difference]: Without dead ends: 4355 [2023-11-12 00:48:50,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:50,356 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:50,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 36 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2023-11-12 00:48:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 4355. [2023-11-12 00:48:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4323 states have (on average 4.071940781864446) internal successors, (17603), 4354 states have internal predecessors, (17603), 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 00:48:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 17603 transitions. [2023-11-12 00:48:50,594 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 17603 transitions. Word has length 5 [2023-11-12 00:48:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:50,594 INFO L495 AbstractCegarLoop]: Abstraction has 4355 states and 17603 transitions. [2023-11-12 00:48:50,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 17603 transitions. [2023-11-12 00:48:50,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:48:50,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:50,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:48:50,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 00:48:50,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:50,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1319002370, now seen corresponding path program 1 times [2023-11-12 00:48:50,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:50,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130215650] [2023-11-12 00:48:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:50,735 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 00:48:50,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130215650] [2023-11-12 00:48:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130215650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:50,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:50,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:50,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637254942] [2023-11-12 00:48:50,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:50,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:50,738 INFO L87 Difference]: Start difference. First operand 4355 states and 17603 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:50,879 INFO L93 Difference]: Finished difference Result 4899 states and 19735 transitions. [2023-11-12 00:48:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:50,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:48:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:50,947 INFO L225 Difference]: With dead ends: 4899 [2023-11-12 00:48:50,947 INFO L226 Difference]: Without dead ends: 4899 [2023-11-12 00:48:50,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:50,950 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:50,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 39 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2023-11-12 00:48:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4899. [2023-11-12 00:48:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 4867 states have (on average 4.054859256215328) internal successors, (19735), 4898 states have internal predecessors, (19735), 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 00:48:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 19735 transitions. [2023-11-12 00:48:51,282 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 19735 transitions. Word has length 5 [2023-11-12 00:48:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:51,282 INFO L495 AbstractCegarLoop]: Abstraction has 4899 states and 19735 transitions. [2023-11-12 00:48:51,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 19735 transitions. [2023-11-12 00:48:51,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:48:51,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:51,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:48:51,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 00:48:51,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:51,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2060597458, now seen corresponding path program 1 times [2023-11-12 00:48:51,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:51,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538251084] [2023-11-12 00:48:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:51,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:51,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538251084] [2023-11-12 00:48:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538251084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:48:51,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513836690] [2023-11-12 00:48:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:51,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:48:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:48:51,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:48:51,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:48:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:51,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:48:51,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:51,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:51,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513836690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:51,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:48:51,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 00:48:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384831161] [2023-11-12 00:48:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:48:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:48:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:48:51,561 INFO L87 Difference]: Start difference. First operand 4899 states and 19735 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 00:48:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:51,852 INFO L93 Difference]: Finished difference Result 4355 states and 17603 transitions. [2023-11-12 00:48:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:48:51,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 00:48:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:51,894 INFO L225 Difference]: With dead ends: 4355 [2023-11-12 00:48:51,894 INFO L226 Difference]: Without dead ends: 4355 [2023-11-12 00:48:51,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:48:51,895 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 61 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:51,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 69 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4355 states. [2023-11-12 00:48:52,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4355 to 4355. [2023-11-12 00:48:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4339 states have (on average 4.056925558884536) internal successors, (17603), 4354 states have internal predecessors, (17603), 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 00:48:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 17603 transitions. [2023-11-12 00:48:52,164 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 17603 transitions. Word has length 6 [2023-11-12 00:48:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:52,164 INFO L495 AbstractCegarLoop]: Abstraction has 4355 states and 17603 transitions. [2023-11-12 00:48:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 00:48:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 17603 transitions. [2023-11-12 00:48:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:52,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:52,165 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:52,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:52,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca0dde6f-736c-4fad-9ac7-944f9505c90f/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 00:48:52,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:52,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:52,372 INFO L85 PathProgramCache]: Analyzing trace with hash -698186246, now seen corresponding path program 1 times [2023-11-12 00:48:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:52,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155601461] [2023-11-12 00:48:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:52,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:48:52,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:52,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155601461] [2023-11-12 00:48:52,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155601461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:52,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:52,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:52,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223798388] [2023-11-12 00:48:52,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:52,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:52,441 INFO L87 Difference]: Start difference. First operand 4355 states and 17603 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:52,548 INFO L93 Difference]: Finished difference Result 3923 states and 15893 transitions. [2023-11-12 00:48:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:52,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2023-11-12 00:48:52,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:52,579 INFO L225 Difference]: With dead ends: 3923 [2023-11-12 00:48:52,580 INFO L226 Difference]: Without dead ends: 3923 [2023-11-12 00:48:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:52,581 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:52,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2023-11-12 00:48:52,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3923. [2023-11-12 00:48:52,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3911 states have (on average 4.063666581436973) internal successors, (15893), 3922 states have internal predecessors, (15893), 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 00:48:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 15893 transitions. [2023-11-12 00:48:52,875 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 15893 transitions. Word has length 9 [2023-11-12 00:48:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:52,875 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 15893 transitions. [2023-11-12 00:48:52,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 15893 transitions. [2023-11-12 00:48:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:52,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:52,876 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 00:48:52,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:52,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash -698186402, now seen corresponding path program 1 times [2023-11-12 00:48:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045552820] [2023-11-12 00:48:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:52,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:48:52,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:52,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045552820] [2023-11-12 00:48:52,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045552820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:52,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:52,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:52,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115329400] [2023-11-12 00:48:52,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:52,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:52,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:52,923 INFO L87 Difference]: Start difference. First operand 3923 states and 15893 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:53,020 INFO L93 Difference]: Finished difference Result 3491 states and 14183 transitions. [2023-11-12 00:48:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:53,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2023-11-12 00:48:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:53,048 INFO L225 Difference]: With dead ends: 3491 [2023-11-12 00:48:53,049 INFO L226 Difference]: Without dead ends: 3491 [2023-11-12 00:48:53,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:53,050 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:53,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-11-12 00:48:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3491. [2023-11-12 00:48:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3483 states have (on average 4.07206431237439) internal successors, (14183), 3490 states have internal predecessors, (14183), 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 00:48:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 14183 transitions. [2023-11-12 00:48:53,297 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 14183 transitions. Word has length 9 [2023-11-12 00:48:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:53,298 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 14183 transitions. [2023-11-12 00:48:53,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 14183 transitions. [2023-11-12 00:48:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:53,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:53,299 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:53,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 00:48:53,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:53,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -698186523, now seen corresponding path program 1 times [2023-11-12 00:48:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:53,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142323504] [2023-11-12 00:48:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:48:53,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142323504] [2023-11-12 00:48:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142323504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:53,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:53,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031374610] [2023-11-12 00:48:53,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:53,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:53,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:53,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:53,357 INFO L87 Difference]: Start difference. First operand 3491 states and 14183 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:53,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:53,462 INFO L93 Difference]: Finished difference Result 3059 states and 12473 transitions. [2023-11-12 00:48:53,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:53,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2023-11-12 00:48:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:53,490 INFO L225 Difference]: With dead ends: 3059 [2023-11-12 00:48:53,490 INFO L226 Difference]: Without dead ends: 3059 [2023-11-12 00:48:53,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:53,491 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:53,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2023-11-12 00:48:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 3059. [2023-11-12 00:48:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 3055 states have (on average 4.082815057283143) internal successors, (12473), 3058 states have internal predecessors, (12473), 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 00:48:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 12473 transitions. [2023-11-12 00:48:53,653 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 12473 transitions. Word has length 9 [2023-11-12 00:48:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 3059 states and 12473 transitions. [2023-11-12 00:48:53,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 00:48:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 12473 transitions. [2023-11-12 00:48:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:48:53,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:53,655 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 00:48:53,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:53,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash -446568630, now seen corresponding path program 1 times [2023-11-12 00:48:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818209936] [2023-11-12 00:48:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:53,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:48:53,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818209936] [2023-11-12 00:48:53,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818209936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:53,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:53,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020066075] [2023-11-12 00:48:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:53,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:53,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:53,749 INFO L87 Difference]: Start difference. First operand 3059 states and 12473 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 00:48:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:53,842 INFO L93 Difference]: Finished difference Result 2779 states and 11334 transitions. [2023-11-12 00:48:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:48:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:53,862 INFO L225 Difference]: With dead ends: 2779 [2023-11-12 00:48:53,863 INFO L226 Difference]: Without dead ends: 2779 [2023-11-12 00:48:53,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:53,864 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 28 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:53,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2023-11-12 00:48:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2023-11-12 00:48:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2779 states, 2776 states have (on average 4.0828530259366) internal successors, (11334), 2778 states have internal predecessors, (11334), 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 00:48:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 11334 transitions. [2023-11-12 00:48:54,041 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 11334 transitions. Word has length 13 [2023-11-12 00:48:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:54,041 INFO L495 AbstractCegarLoop]: Abstraction has 2779 states and 11334 transitions. [2023-11-12 00:48:54,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 00:48:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 11334 transitions. [2023-11-12 00:48:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:48:54,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:54,043 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:54,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 00:48:54,044 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:54,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash -446568483, now seen corresponding path program 1 times [2023-11-12 00:48:54,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:54,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507492399] [2023-11-12 00:48:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:54,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:48:54,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:54,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507492399] [2023-11-12 00:48:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507492399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:54,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:54,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:54,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063595947] [2023-11-12 00:48:54,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:54,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:54,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:54,137 INFO L87 Difference]: Start difference. First operand 2779 states and 11334 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 00:48:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:54,231 INFO L93 Difference]: Finished difference Result 3059 states and 12473 transitions. [2023-11-12 00:48:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:54,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:48:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:54,250 INFO L225 Difference]: With dead ends: 3059 [2023-11-12 00:48:54,250 INFO L226 Difference]: Without dead ends: 3059 [2023-11-12 00:48:54,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:54,251 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:54,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 34 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2023-11-12 00:48:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 3059. [2023-11-12 00:48:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 3056 states have (on average 4.081479057591623) internal successors, (12473), 3058 states have internal predecessors, (12473), 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 00:48:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 12473 transitions. [2023-11-12 00:48:54,360 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 12473 transitions. Word has length 13 [2023-11-12 00:48:54,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:54,361 INFO L495 AbstractCegarLoop]: Abstraction has 3059 states and 12473 transitions. [2023-11-12 00:48:54,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 00:48:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 12473 transitions. [2023-11-12 00:48:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:48:54,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:54,363 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:54,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 00:48:54,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:54,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash -958719769, now seen corresponding path program 1 times [2023-11-12 00:48:54,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:54,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404644226] [2023-11-12 00:48:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:48:54,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404644226] [2023-11-12 00:48:54,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404644226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:54,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:54,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:54,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24406704] [2023-11-12 00:48:54,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:54,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:54,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:54,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:54,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:54,427 INFO L87 Difference]: Start difference. First operand 3059 states and 12473 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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 00:48:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:54,587 INFO L93 Difference]: Finished difference Result 2779 states and 11334 transitions. [2023-11-12 00:48:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 14 [2023-11-12 00:48:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:54,604 INFO L225 Difference]: With dead ends: 2779 [2023-11-12 00:48:54,605 INFO L226 Difference]: Without dead ends: 2779 [2023-11-12 00:48:54,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:54,607 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:54,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:48:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2023-11-12 00:48:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2023-11-12 00:48:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2779 states, 2777 states have (on average 4.08138278718041) internal successors, (11334), 2778 states have internal predecessors, (11334), 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 00:48:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 11334 transitions. [2023-11-12 00:48:54,711 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 11334 transitions. Word has length 14 [2023-11-12 00:48:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:54,713 INFO L495 AbstractCegarLoop]: Abstraction has 2779 states and 11334 transitions. [2023-11-12 00:48:54,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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 00:48:54,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 11334 transitions. [2023-11-12 00:48:54,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:48:54,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:54,714 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:54,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 00:48:54,715 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:54,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash -958720168, now seen corresponding path program 1 times [2023-11-12 00:48:54,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:54,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493831302] [2023-11-12 00:48:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:54,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 00:48:54,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:48:54,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493831302] [2023-11-12 00:48:54,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493831302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:54,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:54,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:54,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676372993] [2023-11-12 00:48:54,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:54,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:48:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:54,778 INFO L87 Difference]: Start difference. First operand 2779 states and 11334 transitions. Second operand has 3 states, 2 states have (on average 5.0) 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 00:48:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:54,845 INFO L93 Difference]: Finished difference Result 2499 states and 10195 transitions. [2023-11-12 00:48:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:54,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) 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 14 [2023-11-12 00:48:54,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:54,857 INFO L225 Difference]: With dead ends: 2499 [2023-11-12 00:48:54,857 INFO L226 Difference]: Without dead ends: 2499 [2023-11-12 00:48:54,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:54,858 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:54,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 30 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2023-11-12 00:48:54,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2499. [2023-11-12 00:48:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2498 states have (on average 4.081265012009608) internal successors, (10195), 2498 states have internal predecessors, (10195), 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 00:48:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 10195 transitions. [2023-11-12 00:48:54,939 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 10195 transitions. Word has length 14 [2023-11-12 00:48:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:54,939 INFO L495 AbstractCegarLoop]: Abstraction has 2499 states and 10195 transitions. [2023-11-12 00:48:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) 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 00:48:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 10195 transitions. [2023-11-12 00:48:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:48:54,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:54,941 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-12 00:48:54,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 00:48:54,942 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-12 00:48:54,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash 329700860, now seen corresponding path program 1 times [2023-11-12 00:48:54,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:54,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577307430] [2023-11-12 00:48:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:54,953 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:48:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:54,997 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:48:54,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:48:54,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 00:48:54,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-12 00:48:54,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-12 00:48:54,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-12 00:48:54,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-12 00:48:54,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-12 00:48:54,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-12 00:48:54,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-12 00:48:54,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-12 00:48:54,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-12 00:48:54,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 00:48:55,002 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:55,002 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 00:48:55,002 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-12 00:48:55,047 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:48:55,051 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:48:55,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 277 transitions, 582 flow [2023-11-12 00:48:55,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 277 transitions, 582 flow [2023-11-12 00:48:55,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 277 transitions, 582 flow [2023-11-12 00:48:55,133 INFO L124 PetriNetUnfolderBase]: 37/327 cut-off events. [2023-11-12 00:48:55,133 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 00:48:55,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 327 events. 37/327 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1084 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 261. Up to 10 conditions per place. [2023-11-12 00:48:55,164 INFO L119 LiptonReduction]: Number of co-enabled transitions 50640 [2023-11-12 00:49:03,341 INFO L134 LiptonReduction]: Checked pairs total: 73821 [2023-11-12 00:49:03,341 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-11-12 00:49:03,343 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 62 transitions, 152 flow [2023-11-12 00:49:07,690 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 94384 states, 92983 states have (on average 5.54943376746287) internal successors, (516003), 94383 states have internal predecessors, (516003), 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 00:49:07,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:49:07,697 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;@3522eed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:49:07,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-12 00:49:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 94384 states, 92983 states have (on average 5.54943376746287) internal successors, (516003), 94383 states have internal predecessors, (516003), 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 00:49:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:49:07,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:07,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:49:07,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-12 00:49:07,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1952463307, now seen corresponding path program 1 times [2023-11-12 00:49:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:07,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619769578] [2023-11-12 00:49:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:07,902 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 00:49:07,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:07,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619769578] [2023-11-12 00:49:07,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619769578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:07,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:49:07,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:49:07,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221151882] [2023-11-12 00:49:07,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:07,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:49:07,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:07,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:49:07,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:49:08,352 INFO L87 Difference]: Start difference. First operand has 94384 states, 92983 states have (on average 5.54943376746287) internal successors, (516003), 94383 states have internal predecessors, (516003), 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), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:49:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:09,426 INFO L93 Difference]: Finished difference Result 48999 states and 251255 transitions. [2023-11-12 00:49:09,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:49:09,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:49:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:10,332 INFO L225 Difference]: With dead ends: 48999 [2023-11-12 00:49:10,333 INFO L226 Difference]: Without dead ends: 48999 [2023-11-12 00:49:10,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:49:10,334 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:10,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 48 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:49:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48999 states.