./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --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 fd7555e2b4abe63429c1be22a8b482f63bbf931ffcb895a158eac84b789e7c88 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:51:03,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:51:03,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:51:03,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:51:03,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:51:03,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:51:03,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:51:03,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:51:03,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:51:03,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:51:03,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:51:03,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:51:03,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:51:03,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:51:03,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:51:03,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:51:03,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:51:03,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:51:03,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:51:03,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:51:03,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:51:03,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:51:03,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:51:03,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:51:03,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:51:03,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:51:03,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:51:03,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:51:03,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:51:03,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:51:03,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:51:03,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:51:03,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:51:03,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:51:03,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:51:03,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:51:03,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:51:03,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:51:03,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:51:03,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:51:03,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:51:03,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 07:51:03,953 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:51:03,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:51:03,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:51:03,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:51:03,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:51:03,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:51:03,956 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:51:03,956 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:51:03,957 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:51:03,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:51:03,958 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:51:03,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:51:03,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:51:03,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:51:03,959 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:51:03,960 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:51:03,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:51:03,960 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:51:03,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:51:03,962 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:51:03,962 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:51:03,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:51:03,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:51:03,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:51:03,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:51:03,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:51:03,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:51:03,965 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:51:03,965 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:51:03,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:51:03,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:51:03,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:51:03,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:51:03,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:51:03,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:03,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:51:03,968 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:51:03,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:51:03,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:51:03,969 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:51:03,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:51:03,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:51:03,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:51:03,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd7555e2b4abe63429c1be22a8b482f63bbf931ffcb895a158eac84b789e7c88 [2022-11-19 07:51:04,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:51:04,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:51:04,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:51:04,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:51:04,341 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:51:04,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i [2022-11-19 07:51:04,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/data/e11b5aae2/4a818735647a48eb96787e9abe5e9509/FLAG2b90ff7a0 [2022-11-19 07:51:05,136 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:51:05,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i [2022-11-19 07:51:05,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/data/e11b5aae2/4a818735647a48eb96787e9abe5e9509/FLAG2b90ff7a0 [2022-11-19 07:51:05,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/data/e11b5aae2/4a818735647a48eb96787e9abe5e9509 [2022-11-19 07:51:05,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:51:05,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:51:05,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:05,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:51:05,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:51:05,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:05" (1/1) ... [2022-11-19 07:51:05,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56641253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:05, skipping insertion in model container [2022-11-19 07:51:05,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:05" (1/1) ... [2022-11-19 07:51:05,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:51:05,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:51:05,903 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i[30190,30203] [2022-11-19 07:51:05,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:05,934 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:51:05,992 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-20.i[30190,30203] [2022-11-19 07:51:06,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:06,038 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:51:06,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06 WrapperNode [2022-11-19 07:51:06,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:06,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:06,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:51:06,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:51:06,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,093 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-19 07:51:06,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:06,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:51:06,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:51:06,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:51:06,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:51:06,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:51:06,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:51:06,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:51:06,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (1/1) ... [2022-11-19 07:51:06,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:06,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:51:06,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c53c0a17-74cf-498a-8abe-fd1f58347909/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:51:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:51:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-19 07:51:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-19 07:51:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:51:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 07:51:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:51:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:51:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:51:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-19 07:51:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-19 07:51:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:51:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 07:51:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:51:06,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:51:06,272 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:51:06,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:51:06,563 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:51:06,859 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:51:06,867 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:51:06,867 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:51:06,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:06 BoogieIcfgContainer [2022-11-19 07:51:06,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:51:06,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:51:06,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:51:06,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:51:06,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:05" (1/3) ... [2022-11-19 07:51:06,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd10f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:06, skipping insertion in model container [2022-11-19 07:51:06,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:06" (2/3) ... [2022-11-19 07:51:06,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd10f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:06, skipping insertion in model container [2022-11-19 07:51:06,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:06" (3/3) ... [2022-11-19 07:51:06,881 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-20.i [2022-11-19 07:51:06,891 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:51:06,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:51:06,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 07:51:06,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:51:07,010 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-19 07:51:07,076 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:51:07,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-19 07:51:07,106 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 106 transitions, 234 flow [2022-11-19 07:51:07,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-19 07:51:07,265 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-19 07:51:07,265 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-19 07:51:07,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 747 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-11-19 07:51:07,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 1474 [2022-11-19 07:51:10,428 INFO L134 LiptonReduction]: Checked pairs total: 2917 [2022-11-19 07:51:10,429 INFO L136 LiptonReduction]: Total number of compositions: 90 [2022-11-19 07:51:10,438 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 34 transitions, 90 flow [2022-11-19 07:51:10,463 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 184 states, 158 states have (on average 2.0822784810126582) internal successors, (329), 183 states have internal predecessors, (329), 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) [2022-11-19 07:51:10,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:51:10,491 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=LoopsAndPotentialCycles, 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;@4a640f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:51:10,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-19 07:51:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 158 states have (on average 2.0822784810126582) internal successors, (329), 183 states have internal predecessors, (329), 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) [2022-11-19 07:51:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:51:10,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:10,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:51:10,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash 11872911, now seen corresponding path program 1 times [2022-11-19 07:51:10,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:10,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621297485] [2022-11-19 07:51:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:10,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:10,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621297485] [2022-11-19 07:51:10,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621297485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:10,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:10,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:51:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292782774] [2022-11-19 07:51:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:10,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:10,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:10,835 INFO L87 Difference]: Start difference. First operand has 184 states, 158 states have (on average 2.0822784810126582) internal successors, (329), 183 states have internal predecessors, (329), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-19 07:51:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:10,958 INFO L93 Difference]: Finished difference Result 99 states and 167 transitions. [2022-11-19 07:51:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-19 07:51:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:10,972 INFO L225 Difference]: With dead ends: 99 [2022-11-19 07:51:10,972 INFO L226 Difference]: Without dead ends: 81 [2022-11-19 07:51:10,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:10,979 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:10,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 7 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-19 07:51:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-19 07:51:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.844155844155844) internal successors, (142), 80 states have internal predecessors, (142), 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) [2022-11-19 07:51:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 142 transitions. [2022-11-19 07:51:11,043 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 142 transitions. Word has length 4 [2022-11-19 07:51:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:11,044 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 142 transitions. [2022-11-19 07:51:11,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-19 07:51:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 142 transitions. [2022-11-19 07:51:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:51:11,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:11,049 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 07:51:11,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:51:11,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:11,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1475021417, now seen corresponding path program 1 times [2022-11-19 07:51:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:11,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791627216] [2022-11-19 07:51:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:11,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:51:11,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:51:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:51:11,185 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:51:11,186 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:51:11,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-19 07:51:11,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-19 07:51:11,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-19 07:51:11,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-19 07:51:11,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-19 07:51:11,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-19 07:51:11,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-19 07:51:11,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-19 07:51:11,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-19 07:51:11,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-19 07:51:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:51:11,207 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:51:11,209 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:51:11,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 07:51:11,254 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-19 07:51:11,262 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:51:11,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-19 07:51:11,262 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 124 transitions, 296 flow [2022-11-19 07:51:11,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-19 07:51:11,415 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-19 07:51:11,415 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-19 07:51:11,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4086 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-11-19 07:51:11,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 3472 [2022-11-19 07:51:14,682 INFO L134 LiptonReduction]: Checked pairs total: 7107 [2022-11-19 07:51:14,683 INFO L136 LiptonReduction]: Total number of compositions: 100 [2022-11-19 07:51:14,685 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 45 transitions, 138 flow [2022-11-19 07:51:14,820 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2213 states, 2116 states have (on average 2.8459357277882797) internal successors, (6022), 2212 states have internal predecessors, (6022), 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) [2022-11-19 07:51:14,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:51:14,832 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=LoopsAndPotentialCycles, 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;@4a640f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:51:14,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-19 07:51:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 2213 states, 2116 states have (on average 2.8459357277882797) internal successors, (6022), 2212 states have internal predecessors, (6022), 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) [2022-11-19 07:51:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:51:14,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:14,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:51:14,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:14,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash 597043675, now seen corresponding path program 1 times [2022-11-19 07:51:14,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:14,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689301936] [2022-11-19 07:51:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:14,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:14,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:14,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689301936] [2022-11-19 07:51:14,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689301936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:14,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:14,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:51:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555011319] [2022-11-19 07:51:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:14,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:14,938 INFO L87 Difference]: Start difference. First operand has 2213 states, 2116 states have (on average 2.8459357277882797) internal successors, (6022), 2212 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:15,067 INFO L93 Difference]: Finished difference Result 1777 states and 4614 transitions. [2022-11-19 07:51:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:15,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:51:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:15,085 INFO L225 Difference]: With dead ends: 1777 [2022-11-19 07:51:15,086 INFO L226 Difference]: Without dead ends: 1702 [2022-11-19 07:51:15,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:15,087 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:15,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-11-19 07:51:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2022-11-19 07:51:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1661 states have (on average 2.6929560505719445) internal successors, (4473), 1701 states have internal predecessors, (4473), 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) [2022-11-19 07:51:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4473 transitions. [2022-11-19 07:51:15,194 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4473 transitions. Word has length 5 [2022-11-19 07:51:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:15,195 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 4473 transitions. [2022-11-19 07:51:15,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4473 transitions. [2022-11-19 07:51:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:51:15,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:15,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:51:15,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:51:15,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1207481330, now seen corresponding path program 1 times [2022-11-19 07:51:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:15,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137762813] [2022-11-19 07:51:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:51:15,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:15,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137762813] [2022-11-19 07:51:15,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137762813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:15,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:15,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:51:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620777484] [2022-11-19 07:51:15,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:15,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:15,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:15,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:15,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:15,267 INFO L87 Difference]: Start difference. First operand 1702 states and 4473 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) [2022-11-19 07:51:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:15,374 INFO L93 Difference]: Finished difference Result 1586 states and 4185 transitions. [2022-11-19 07:51:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:15,375 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 9 [2022-11-19 07:51:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:15,385 INFO L225 Difference]: With dead ends: 1586 [2022-11-19 07:51:15,385 INFO L226 Difference]: Without dead ends: 1586 [2022-11-19 07:51:15,385 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 [2022-11-19 07:51:15,386 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:15,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2022-11-19 07:51:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1586. [2022-11-19 07:51:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1564 states have (on average 2.675831202046036) internal successors, (4185), 1585 states have internal predecessors, (4185), 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) [2022-11-19 07:51:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 4185 transitions. [2022-11-19 07:51:15,483 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 4185 transitions. Word has length 9 [2022-11-19 07:51:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:15,484 INFO L495 AbstractCegarLoop]: Abstraction has 1586 states and 4185 transitions. [2022-11-19 07:51:15,485 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) [2022-11-19 07:51:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 4185 transitions. [2022-11-19 07:51:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:51:15,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:15,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:51:15,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:51:15,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:15,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1207481329, now seen corresponding path program 1 times [2022-11-19 07:51:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:15,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900398712] [2022-11-19 07:51:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:15,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:15,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:15,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900398712] [2022-11-19 07:51:15,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900398712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:15,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:15,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:51:15,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414652499] [2022-11-19 07:51:15,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:15,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:15,557 INFO L87 Difference]: Start difference. First operand 1586 states and 4185 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) [2022-11-19 07:51:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:15,624 INFO L93 Difference]: Finished difference Result 1470 states and 3897 transitions. [2022-11-19 07:51:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:15,625 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 9 [2022-11-19 07:51:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:15,628 INFO L225 Difference]: With dead ends: 1470 [2022-11-19 07:51:15,629 INFO L226 Difference]: Without dead ends: 420 [2022-11-19 07:51:15,629 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 [2022-11-19 07:51:15,630 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:15,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:51:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-19 07:51:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-11-19 07:51:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 417 states have (on average 2.760191846522782) internal successors, (1151), 419 states have internal predecessors, (1151), 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) [2022-11-19 07:51:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1151 transitions. [2022-11-19 07:51:15,651 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1151 transitions. Word has length 9 [2022-11-19 07:51:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:15,652 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 1151 transitions. [2022-11-19 07:51:15,652 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) [2022-11-19 07:51:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1151 transitions. [2022-11-19 07:51:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:51:15,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:15,654 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:51:15,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:51:15,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash -748359889, now seen corresponding path program 1 times [2022-11-19 07:51:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:15,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758751517] [2022-11-19 07:51:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:51:15,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:51:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:51:15,693 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:51:15,694 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:51:15,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-19 07:51:15,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-19 07:51:15,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-19 07:51:15,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-19 07:51:15,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-19 07:51:15,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-19 07:51:15,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-19 07:51:15,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-19 07:51:15,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-19 07:51:15,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-19 07:51:15,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:51:15,697 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 07:51:15,698 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:51:15,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 07:51:15,726 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-19 07:51:15,729 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:51:15,729 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-19 07:51:15,729 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 142 transitions, 362 flow [2022-11-19 07:51:15,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-19 07:51:16,215 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-19 07:51:16,215 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-19 07:51:16,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 20030 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-11-19 07:51:16,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 5994 [2022-11-19 07:51:19,573 INFO L134 LiptonReduction]: Checked pairs total: 13113 [2022-11-19 07:51:19,574 INFO L136 LiptonReduction]: Total number of compositions: 112 [2022-11-19 07:51:19,575 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 54 transitions, 186 flow [2022-11-19 07:51:20,974 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24759 states, 24407 states have (on average 3.7242594337690007) internal successors, (90898), 24758 states have internal predecessors, (90898), 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) [2022-11-19 07:51:20,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:51:20,977 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=LoopsAndPotentialCycles, 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;@4a640f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:51:20,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-19 07:51:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 24759 states, 24407 states have (on average 3.7242594337690007) internal successors, (90898), 24758 states have internal predecessors, (90898), 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) [2022-11-19 07:51:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:51:21,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:21,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:51:21,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash 854538839, now seen corresponding path program 1 times [2022-11-19 07:51:21,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:21,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841746260] [2022-11-19 07:51:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:21,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:21,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841746260] [2022-11-19 07:51:21,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841746260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:21,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:21,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:51:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576238126] [2022-11-19 07:51:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:21,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:21,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:21,245 INFO L87 Difference]: Start difference. First operand has 24759 states, 24407 states have (on average 3.7242594337690007) internal successors, (90898), 24758 states have internal predecessors, (90898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:21,891 INFO L93 Difference]: Finished difference Result 23445 states and 82432 transitions. [2022-11-19 07:51:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:51:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:22,272 INFO L225 Difference]: With dead ends: 23445 [2022-11-19 07:51:22,272 INFO L226 Difference]: Without dead ends: 22436 [2022-11-19 07:51:22,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:22,274 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:22,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22436 states. [2022-11-19 07:51:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22436 to 22436. [2022-11-19 07:51:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22436 states, 22218 states have (on average 3.5745341614906834) internal successors, (79419), 22435 states have internal predecessors, (79419), 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) [2022-11-19 07:51:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22436 states to 22436 states and 79419 transitions. [2022-11-19 07:51:23,833 INFO L78 Accepts]: Start accepts. Automaton has 22436 states and 79419 transitions. Word has length 5 [2022-11-19 07:51:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:23,834 INFO L495 AbstractCegarLoop]: Abstraction has 22436 states and 79419 transitions. [2022-11-19 07:51:23,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22436 states and 79419 transitions. [2022-11-19 07:51:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:51:23,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:23,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:51:23,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:51:23,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1546049665, now seen corresponding path program 1 times [2022-11-19 07:51:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:23,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699467312] [2022-11-19 07:51:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:23,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:51:23,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:23,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699467312] [2022-11-19 07:51:23,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699467312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:23,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:23,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:51:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116084255] [2022-11-19 07:51:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:23,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:23,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:23,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:23,947 INFO L87 Difference]: Start difference. First operand 22436 states and 79419 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) [2022-11-19 07:51:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:24,254 INFO L93 Difference]: Finished difference Result 20546 states and 73380 transitions. [2022-11-19 07:51:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:24,255 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 9 [2022-11-19 07:51:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:24,509 INFO L225 Difference]: With dead ends: 20546 [2022-11-19 07:51:24,512 INFO L226 Difference]: Without dead ends: 20546 [2022-11-19 07:51:24,512 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 [2022-11-19 07:51:24,513 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:24,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20546 states. [2022-11-19 07:51:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20546 to 20546. [2022-11-19 07:51:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20546 states, 20435 states have (on average 3.5908979691705407) internal successors, (73380), 20545 states have internal predecessors, (73380), 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) [2022-11-19 07:51:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20546 states to 20546 states and 73380 transitions. [2022-11-19 07:51:25,407 INFO L78 Accepts]: Start accepts. Automaton has 20546 states and 73380 transitions. Word has length 9 [2022-11-19 07:51:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 20546 states and 73380 transitions. [2022-11-19 07:51:25,407 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) [2022-11-19 07:51:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 20546 states and 73380 transitions. [2022-11-19 07:51:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:51:25,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:25,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:51:25,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:51:25,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1546049667, now seen corresponding path program 1 times [2022-11-19 07:51:25,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:25,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025458269] [2022-11-19 07:51:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:25,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:25,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:25,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025458269] [2022-11-19 07:51:25,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025458269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:25,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:25,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:51:25,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338362343] [2022-11-19 07:51:25,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:25,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:25,459 INFO L87 Difference]: Start difference. First operand 20546 states and 73380 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) [2022-11-19 07:51:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:25,693 INFO L93 Difference]: Finished difference Result 18656 states and 67341 transitions. [2022-11-19 07:51:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:25,694 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 9 [2022-11-19 07:51:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:25,710 INFO L225 Difference]: With dead ends: 18656 [2022-11-19 07:51:25,711 INFO L226 Difference]: Without dead ends: 2760 [2022-11-19 07:51:25,711 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 [2022-11-19 07:51:25,712 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:25,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 6 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:51:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2022-11-19 07:51:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2760. [2022-11-19 07:51:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2756 states have (on average 3.7714078374455733) internal successors, (10394), 2759 states have internal predecessors, (10394), 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) [2022-11-19 07:51:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 10394 transitions. [2022-11-19 07:51:25,831 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 10394 transitions. Word has length 9 [2022-11-19 07:51:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:25,832 INFO L495 AbstractCegarLoop]: Abstraction has 2760 states and 10394 transitions. [2022-11-19 07:51:25,832 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) [2022-11-19 07:51:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 10394 transitions. [2022-11-19 07:51:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:51:25,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:25,835 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-19 07:51:25,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:51:25,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash -667919383, now seen corresponding path program 1 times [2022-11-19 07:51:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:25,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932735860] [2022-11-19 07:51:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:51:25,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:51:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:51:25,873 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:51:25,873 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:51:25,873 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-19 07:51:25,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-19 07:51:25,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-19 07:51:25,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-19 07:51:25,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-19 07:51:25,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-19 07:51:25,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-19 07:51:25,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-19 07:51:25,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-19 07:51:25,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-19 07:51:25,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:51:25,877 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 07:51:25,877 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:51:25,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-19 07:51:25,909 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-19 07:51:25,913 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:51:25,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-19 07:51:25,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 160 transitions, 432 flow [2022-11-19 07:51:25,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-19 07:51:28,645 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-19 07:51:28,645 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-19 07:51:28,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 100691 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-11-19 07:51:29,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 9040 [2022-11-19 07:51:32,832 INFO L134 LiptonReduction]: Checked pairs total: 21668 [2022-11-19 07:51:32,833 INFO L136 LiptonReduction]: Total number of compositions: 124 [2022-11-19 07:51:32,834 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 63 transitions, 238 flow [2022-11-19 07:51:44,750 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 283961 states, 282630 states have (on average 4.633697767399073) internal successors, (1309622), 283960 states have internal predecessors, (1309622), 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) [2022-11-19 07:51:44,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:51:44,760 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=LoopsAndPotentialCycles, 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;@4a640f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:51:44,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-19 07:51:45,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 283961 states, 282630 states have (on average 4.633697767399073) internal successors, (1309622), 283960 states have internal predecessors, (1309622), 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) [2022-11-19 07:51:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:51:45,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:45,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:51:45,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-19 07:51:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1140871683, now seen corresponding path program 1 times [2022-11-19 07:51:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:45,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129327802] [2022-11-19 07:51:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:51:45,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:45,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129327802] [2022-11-19 07:51:45,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129327802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:45,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:45,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:51:45,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724588142] [2022-11-19 07:51:45,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:45,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:51:45,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:45,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:51:45,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:45,570 INFO L87 Difference]: Start difference. First operand has 283961 states, 282630 states have (on average 4.633697767399073) internal successors, (1309622), 283960 states have internal predecessors, (1309622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:51:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:51,588 INFO L93 Difference]: Finished difference Result 299729 states and 1340094 transitions. [2022-11-19 07:51:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:51:51,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:51:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:55,017 INFO L225 Difference]: With dead ends: 299729 [2022-11-19 07:51:55,017 INFO L226 Difference]: Without dead ends: 284562 [2022-11-19 07:51:55,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:51:55,018 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:55,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 12 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:51:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284562 states. [2022-11-19 07:52:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284562 to 284562. [2022-11-19 07:52:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284562 states, 283595 states have (on average 4.511839066274088) internal successors, (1279535), 284561 states have internal predecessors, (1279535), 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)