./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/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_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/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_51e38388-e712-4dd8-8ac1-bd791b86e5b8/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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- 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 07:57:13,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:57:13,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:57:13,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:57:13,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:57:13,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:57:13,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:57:13,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:57:13,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:57:13,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:57:13,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:57:13,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:57:13,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:57:13,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:57:13,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:57:13,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:57:13,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:57:13,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:57:13,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:57:13,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:57:13,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:57:13,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:57:13,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:57:13,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:57:13,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:57:13,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:57:13,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:57:13,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:57:13,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:57:13,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:57:13,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:57:13,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:57:13,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:57:13,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:57:13,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:57:13,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:57:13,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:57:13,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:57:13,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:57:13,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:57:13,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:57:13,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 07:57:13,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:57:13,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:57:13,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:57:13,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:57:13,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:57:13,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:57:13,192 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:57:13,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:57:13,193 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:57:13,193 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:57:13,195 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:57:13,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:57:13,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:57:13,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:57:13,196 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:57:13,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:57:13,197 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:57:13,197 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:57:13,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:57:13,198 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:57:13,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:57:13,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:57:13,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:57:13,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:57:13,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:57:13,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:57:13,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:57:13,201 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:57:13,201 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:57:13,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:57:13,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:57:13,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:57:13,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:57:13,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:57:13,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:13,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:57:13,205 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:57:13,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:57:13,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:57:13,206 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:57:13,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:57:13,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:57:13,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:57:13,207 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_51e38388-e712-4dd8-8ac1-bd791b86e5b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2022-11-19 07:57:13,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:57:13,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:57:13,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:57:13,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:57:13,605 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:57:13,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-19 07:57:13,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/data/52376ef71/6f382c7565aa4d20b0d1756a748411c4/FLAG109cc0f25 [2022-11-19 07:57:14,297 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:57:14,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-19 07:57:14,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/data/52376ef71/6f382c7565aa4d20b0d1756a748411c4/FLAG109cc0f25 [2022-11-19 07:57:14,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/data/52376ef71/6f382c7565aa4d20b0d1756a748411c4 [2022-11-19 07:57:14,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:57:14,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:57:14,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:14,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:57:14,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:57:14,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:14" (1/1) ... [2022-11-19 07:57:14,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c898f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:14, skipping insertion in model container [2022-11-19 07:57:14,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:14" (1/1) ... [2022-11-19 07:57:14,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:57:14,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:57:15,345 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_51e38388-e712-4dd8-8ac1-bd791b86e5b8/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-19 07:57:15,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:15,384 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:57:15,448 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_51e38388-e712-4dd8-8ac1-bd791b86e5b8/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-19 07:57:15,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:15,532 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:57:15,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15 WrapperNode [2022-11-19 07:57:15,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:15,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:15,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:57:15,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:57:15,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,610 INFO L138 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2022-11-19 07:57:15,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:15,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:57:15,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:57:15,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:57:15,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:57:15,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:57:15,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:57:15,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:57:15,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (1/1) ... [2022-11-19 07:57:15,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:15,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:15,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:57:15,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e38388-e712-4dd8-8ac1-bd791b86e5b8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:57:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 07:57:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-19 07:57:15,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-19 07:57:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:57:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:57:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 07:57:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:57:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:57:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:57:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:57:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:57:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:57:15,778 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 07:57:15,997 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:57:15,999 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:57:16,261 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:57:16,300 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:57:16,301 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:57:16,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:16 BoogieIcfgContainer [2022-11-19 07:57:16,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:57:16,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:57:16,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:57:16,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:57:16,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:14" (1/3) ... [2022-11-19 07:57:16,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e00c729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:16, skipping insertion in model container [2022-11-19 07:57:16,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:15" (2/3) ... [2022-11-19 07:57:16,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e00c729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:16, skipping insertion in model container [2022-11-19 07:57:16,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:16" (3/3) ... [2022-11-19 07:57:16,315 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-11-19 07:57:16,325 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:57:16,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:57:16,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 07:57:16,338 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:57:16,408 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:57:16,446 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:57:16,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 93 transitions, 191 flow [2022-11-19 07:57:16,467 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 93 transitions, 191 flow [2022-11-19 07:57:16,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 191 flow [2022-11-19 07:57:16,529 INFO L130 PetriNetUnfolder]: 7/105 cut-off events. [2022-11-19 07:57:16,529 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 07:57:16,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2022-11-19 07:57:16,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2022-11-19 07:57:21,150 INFO L134 LiptonReduction]: Checked pairs total: 1281 [2022-11-19 07:57:21,151 INFO L136 LiptonReduction]: Total number of compositions: 110 [2022-11-19 07:57:21,160 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 35 flow [2022-11-19 07:57:21,175 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 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 07:57:21,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:57:21,202 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;@1d3b6fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:57:21,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-19 07:57:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 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 07:57:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:57:21,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:21,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:57:21,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-19 07:57:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:21,216 INFO L85 PathProgramCache]: Analyzing trace with hash 13654137, now seen corresponding path program 1 times [2022-11-19 07:57:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:21,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883462005] [2022-11-19 07:57:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:21,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:21,511 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 07:57:21,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:21,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883462005] [2022-11-19 07:57:21,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883462005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:21,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:21,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:57:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798241340] [2022-11-19 07:57:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:21,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:21,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:21,555 INFO L87 Difference]: Start difference. First operand has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 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 07:57:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:21,596 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2022-11-19 07:57:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:21,599 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 07:57:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:21,608 INFO L225 Difference]: With dead ends: 23 [2022-11-19 07:57:21,608 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 07:57:21,609 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 07:57:21,614 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:21,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:57:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 07:57:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 07:57:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.9) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:57:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2022-11-19 07:57:21,656 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 4 [2022-11-19 07:57:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:21,657 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2022-11-19 07:57:21,658 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 07:57:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2022-11-19 07:57:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:57:21,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:21,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:57:21,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:57:21,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-19 07:57:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash 13654129, now seen corresponding path program 1 times [2022-11-19 07:57:21,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:21,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349250479] [2022-11-19 07:57:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:21,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:21,775 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 07:57:21,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:21,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349250479] [2022-11-19 07:57:21,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349250479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:21,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:21,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:57:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799337955] [2022-11-19 07:57:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:21,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:21,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:21,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:21,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:21,779 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. 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 07:57:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:21,797 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2022-11-19 07:57:21,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:21,798 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 07:57:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:21,798 INFO L225 Difference]: With dead ends: 19 [2022-11-19 07:57:21,798 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:57:21,799 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 07:57:21,800 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:21,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:57:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:57:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 07:57:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:57:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2022-11-19 07:57:21,805 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 4 [2022-11-19 07:57:21,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:21,805 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2022-11-19 07:57:21,806 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 07:57:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2022-11-19 07:57:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:57:21,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:21,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:57:21,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:57:21,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-19 07:57:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash 423278965, now seen corresponding path program 1 times [2022-11-19 07:57:21,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:21,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391580397] [2022-11-19 07:57:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:21,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:21,894 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 07:57:21,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:21,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391580397] [2022-11-19 07:57:21,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391580397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:21,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:21,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:57:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013052704] [2022-11-19 07:57:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:21,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:57:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:57:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:57:21,898 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:57:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:21,925 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2022-11-19 07:57:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:57:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:57:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:21,927 INFO L225 Difference]: With dead ends: 27 [2022-11-19 07:57:21,927 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 07:57:21,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:57:21,929 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:21,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:57:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 07:57:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-19 07:57:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 2.0) internal successors, (42), 22 states have internal predecessors, (42), 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 07:57:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 42 transitions. [2022-11-19 07:57:21,935 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 42 transitions. Word has length 5 [2022-11-19 07:57:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:21,936 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 42 transitions. [2022-11-19 07:57:21,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:57:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 42 transitions. [2022-11-19 07:57:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:57:21,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:21,937 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 07:57:21,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:57:21,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-19 07:57:21,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash 236666413, now seen corresponding path program 1 times [2022-11-19 07:57:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:21,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535875659] [2022-11-19 07:57:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:57:21,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:57:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:57:21,986 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:57:21,987 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:57:21,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-19 07:57:21,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-19 07:57:21,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-19 07:57:21,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-19 07:57:21,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-19 07:57:21,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-19 07:57:21,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-19 07:57:21,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-19 07:57:21,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-19 07:57:21,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-19 07:57:21,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-19 07:57:21,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-19 07:57:21,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-19 07:57:21,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:57:21,996 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 07:57:21,998 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:57:21,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 07:57:22,035 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:57:22,038 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:57:22,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 288 flow [2022-11-19 07:57:22,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 138 transitions, 288 flow [2022-11-19 07:57:22,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 288 flow [2022-11-19 07:57:22,077 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-11-19 07:57:22,077 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 07:57:22,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 12/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2022-11-19 07:57:22,085 INFO L119 LiptonReduction]: Number of co-enabled transitions 6600 [2022-11-19 07:57:25,938 INFO L134 LiptonReduction]: Checked pairs total: 18148 [2022-11-19 07:57:25,938 INFO L136 LiptonReduction]: Total number of compositions: 120 [2022-11-19 07:57:25,940 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 46 transitions, 104 flow [2022-11-19 07:57:26,052 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2035 states, 1932 states have (on average 3.0574534161490683) internal successors, (5907), 2034 states have internal predecessors, (5907), 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 07:57:26,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:57:26,055 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;@1d3b6fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:57:26,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-19 07:57:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 2035 states, 1932 states have (on average 3.0574534161490683) internal successors, (5907), 2034 states have internal predecessors, (5907), 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 07:57:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:57:26,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:26,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:57:26,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 07:57:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 712302968, now seen corresponding path program 1 times [2022-11-19 07:57:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:26,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119897829] [2022-11-19 07:57:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:26,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:26,107 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 07:57:26,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:26,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119897829] [2022-11-19 07:57:26,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119897829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:26,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:26,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:57:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856490787] [2022-11-19 07:57:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:26,117 INFO L87 Difference]: Start difference. First operand has 2035 states, 1932 states have (on average 3.0574534161490683) internal successors, (5907), 2034 states have internal predecessors, (5907), 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 07:57:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:26,296 INFO L93 Difference]: Finished difference Result 1516 states and 4359 transitions. [2022-11-19 07:57:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:26,297 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 07:57:26,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:26,315 INFO L225 Difference]: With dead ends: 1516 [2022-11-19 07:57:26,316 INFO L226 Difference]: Without dead ends: 1516 [2022-11-19 07:57:26,316 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 07:57:26,317 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:26,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-11-19 07:57:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1356. [2022-11-19 07:57:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1336 states have (on average 2.927395209580838) internal successors, (3911), 1355 states have internal predecessors, (3911), 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 07:57:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3911 transitions. [2022-11-19 07:57:26,428 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3911 transitions. Word has length 5 [2022-11-19 07:57:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:26,428 INFO L495 AbstractCegarLoop]: Abstraction has 1356 states and 3911 transitions. [2022-11-19 07:57:26,428 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 07:57:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3911 transitions. [2022-11-19 07:57:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:57:26,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:26,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:57:26,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 07:57:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash 986630060, now seen corresponding path program 1 times [2022-11-19 07:57:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:26,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357834872] [2022-11-19 07:57:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:26,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:26,507 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 07:57:26,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:26,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357834872] [2022-11-19 07:57:26,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357834872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:26,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:26,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:57:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811414699] [2022-11-19 07:57:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:26,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:26,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:26,510 INFO L87 Difference]: Start difference. First operand 1356 states and 3911 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 07:57:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:26,611 INFO L93 Difference]: Finished difference Result 1407 states and 3983 transitions. [2022-11-19 07:57:26,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:26,612 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 07:57:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:26,654 INFO L225 Difference]: With dead ends: 1407 [2022-11-19 07:57:26,655 INFO L226 Difference]: Without dead ends: 1407 [2022-11-19 07:57:26,657 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 07:57:26,661 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:26,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 46 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-11-19 07:57:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1377. [2022-11-19 07:57:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1357 states have (on average 2.8953574060427414) internal successors, (3929), 1376 states have internal predecessors, (3929), 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 07:57:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 3929 transitions. [2022-11-19 07:57:26,724 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 3929 transitions. Word has length 9 [2022-11-19 07:57:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:26,726 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 3929 transitions. [2022-11-19 07:57:26,726 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 07:57:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 3929 transitions. [2022-11-19 07:57:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:57:26,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:26,730 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:57:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:57:26,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-19 07:57:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash 562666079, now seen corresponding path program 1 times [2022-11-19 07:57:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:26,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722151113] [2022-11-19 07:57:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:26,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:57:26,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:57:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:57:26,788 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:57:26,788 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:57:26,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-19 07:57:26,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-19 07:57:26,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-19 07:57:26,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-19 07:57:26,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-19 07:57:26,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-19 07:57:26,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-19 07:57:26,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-19 07:57:26,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-19 07:57:26,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-19 07:57:26,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-19 07:57:26,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-19 07:57:26,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-19 07:57:26,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-19 07:57:26,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-19 07:57:26,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-19 07:57:26,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-19 07:57:26,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-19 07:57:26,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-19 07:57:26,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:57:26,793 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 07:57:26,793 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:57:26,793 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 07:57:26,819 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:57:26,822 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:57:26,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 183 transitions, 387 flow [2022-11-19 07:57:26,823 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 183 transitions, 387 flow [2022-11-19 07:57:26,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 183 transitions, 387 flow [2022-11-19 07:57:26,871 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-11-19 07:57:26,872 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-19 07:57:26,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 17/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 598 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2022-11-19 07:57:26,886 INFO L119 LiptonReduction]: Number of co-enabled transitions 15840 [2022-11-19 07:57:31,634 INFO L134 LiptonReduction]: Checked pairs total: 46816 [2022-11-19 07:57:31,635 INFO L136 LiptonReduction]: Total number of compositions: 157 [2022-11-19 07:57:31,636 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 66 transitions, 153 flow [2022-11-19 07:57:33,291 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 36702 states, 35963 states have (on average 4.037121485971693) internal successors, (145187), 36701 states have internal predecessors, (145187), 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 07:57:33,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:57:33,301 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;@1d3b6fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:57:33,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-19 07:57:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 36702 states, 35963 states have (on average 4.037121485971693) internal successors, (145187), 36701 states have internal predecessors, (145187), 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 07:57:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:57:33,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:33,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:57:33,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-19 07:57:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:33,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1076604971, now seen corresponding path program 1 times [2022-11-19 07:57:33,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:33,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476834471] [2022-11-19 07:57:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:33,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:33,630 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 07:57:33,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:33,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476834471] [2022-11-19 07:57:33,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476834471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:33,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:33,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:57:33,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095441489] [2022-11-19 07:57:33,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:33,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:33,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:33,712 INFO L87 Difference]: Start difference. First operand has 36702 states, 35963 states have (on average 4.037121485971693) internal successors, (145187), 36701 states have internal predecessors, (145187), 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 07:57:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:34,728 INFO L93 Difference]: Finished difference Result 25792 states and 101429 transitions. [2022-11-19 07:57:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:34,857 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 07:57:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:35,411 INFO L225 Difference]: With dead ends: 25792 [2022-11-19 07:57:35,411 INFO L226 Difference]: Without dead ends: 25792 [2022-11-19 07:57:35,411 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 07:57:35,416 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:35,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 15 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:57:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25792 states. [2022-11-19 07:57:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25792 to 24752. [2022-11-19 07:57:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24752 states, 24600 states have (on average 3.962479674796748) internal successors, (97477), 24751 states have internal predecessors, (97477), 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 07:57:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24752 states to 24752 states and 97477 transitions. [2022-11-19 07:57:37,679 INFO L78 Accepts]: Start accepts. Automaton has 24752 states and 97477 transitions. Word has length 5 [2022-11-19 07:57:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:37,680 INFO L495 AbstractCegarLoop]: Abstraction has 24752 states and 97477 transitions. [2022-11-19 07:57:37,680 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 07:57:37,680 INFO L276 IsEmpty]: Start isEmpty. Operand 24752 states and 97477 transitions. [2022-11-19 07:57:37,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:57:37,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:37,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:37,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:57:37,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-19 07:57:37,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash -423341142, now seen corresponding path program 1 times [2022-11-19 07:57:37,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:37,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059273645] [2022-11-19 07:57:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:37,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:37,779 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 07:57:37,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:37,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059273645] [2022-11-19 07:57:37,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059273645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:37,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:37,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:57:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064158986] [2022-11-19 07:57:37,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:37,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:37,785 INFO L87 Difference]: Start difference. First operand 24752 states and 97477 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 07:57:38,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:38,317 INFO L93 Difference]: Finished difference Result 28102 states and 110459 transitions. [2022-11-19 07:57:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:38,331 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 07:57:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:38,564 INFO L225 Difference]: With dead ends: 28102 [2022-11-19 07:57:38,564 INFO L226 Difference]: Without dead ends: 28102 [2022-11-19 07:57:38,564 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 07:57:38,566 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 46 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:38,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 77 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28102 states. [2022-11-19 07:57:39,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28102 to 26745. [2022-11-19 07:57:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26745 states, 26593 states have (on average 4.006580679126086) internal successors, (106547), 26744 states have internal predecessors, (106547), 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 07:57:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26745 states to 26745 states and 106547 transitions. [2022-11-19 07:57:40,299 INFO L78 Accepts]: Start accepts. Automaton has 26745 states and 106547 transitions. Word has length 9 [2022-11-19 07:57:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:40,300 INFO L495 AbstractCegarLoop]: Abstraction has 26745 states and 106547 transitions. [2022-11-19 07:57:40,300 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 07:57:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 26745 states and 106547 transitions. [2022-11-19 07:57:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:57:40,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:40,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:40,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:57:40,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-19 07:57:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash -238672442, now seen corresponding path program 1 times [2022-11-19 07:57:40,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:40,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843063152] [2022-11-19 07:57:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:40,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:57:40,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:40,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843063152] [2022-11-19 07:57:40,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843063152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:40,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:40,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:40,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384717807] [2022-11-19 07:57:40,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:40,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:40,389 INFO L87 Difference]: Start difference. First operand 26745 states and 106547 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:57:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:41,017 INFO L93 Difference]: Finished difference Result 25939 states and 100627 transitions. [2022-11-19 07:57:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:57:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:41,259 INFO L225 Difference]: With dead ends: 25939 [2022-11-19 07:57:41,259 INFO L226 Difference]: Without dead ends: 25939 [2022-11-19 07:57:41,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:41,261 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 46 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:41,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 76 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25939 states. [2022-11-19 07:57:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25939 to 25303. [2022-11-19 07:57:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25303 states, 25151 states have (on average 3.9290286668522127) internal successors, (98819), 25302 states have internal predecessors, (98819), 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 07:57:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25303 states to 25303 states and 98819 transitions. [2022-11-19 07:57:42,484 INFO L78 Accepts]: Start accepts. Automaton has 25303 states and 98819 transitions. Word has length 10 [2022-11-19 07:57:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:42,484 INFO L495 AbstractCegarLoop]: Abstraction has 25303 states and 98819 transitions. [2022-11-19 07:57:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:57:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 25303 states and 98819 transitions. [2022-11-19 07:57:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:57:42,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:42,486 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:57:42,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-19 07:57:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1610033679, now seen corresponding path program 1 times [2022-11-19 07:57:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:42,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855841089] [2022-11-19 07:57:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:57:42,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:42,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855841089] [2022-11-19 07:57:42,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855841089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:42,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:42,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:57:42,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24262633] [2022-11-19 07:57:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:42,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:42,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:42,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:42,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:42,540 INFO L87 Difference]: Start difference. First operand 25303 states and 98819 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 07:57:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:42,934 INFO L93 Difference]: Finished difference Result 28747 states and 112091 transitions. [2022-11-19 07:57:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:57:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:43,084 INFO L225 Difference]: With dead ends: 28747 [2022-11-19 07:57:43,084 INFO L226 Difference]: Without dead ends: 28747 [2022-11-19 07:57:43,085 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 07:57:43,086 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 45 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:43,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 77 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28747 states. [2022-11-19 07:57:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28747 to 27373. [2022-11-19 07:57:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27373 states, 27221 states have (on average 3.9735865691929027) internal successors, (108165), 27372 states have internal predecessors, (108165), 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 07:57:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27373 states to 27373 states and 108165 transitions. [2022-11-19 07:57:44,451 INFO L78 Accepts]: Start accepts. Automaton has 27373 states and 108165 transitions. Word has length 13 [2022-11-19 07:57:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:44,452 INFO L495 AbstractCegarLoop]: Abstraction has 27373 states and 108165 transitions. [2022-11-19 07:57:44,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 07:57:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 27373 states and 108165 transitions. [2022-11-19 07:57:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:57:44,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:44,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:44,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:57:44,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-19 07:57:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:44,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1628564630, now seen corresponding path program 1 times [2022-11-19 07:57:44,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:44,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489392284] [2022-11-19 07:57:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:44,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:57:44,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:44,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489392284] [2022-11-19 07:57:44,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489392284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:44,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:44,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630584636] [2022-11-19 07:57:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:44,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:44,526 INFO L87 Difference]: Start difference. First operand 27373 states and 108165 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 07:57:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:44,797 INFO L93 Difference]: Finished difference Result 26713 states and 102833 transitions. [2022-11-19 07:57:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:44,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:57:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:44,914 INFO L225 Difference]: With dead ends: 26713 [2022-11-19 07:57:44,914 INFO L226 Difference]: Without dead ends: 26713 [2022-11-19 07:57:44,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:44,915 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 45 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:44,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 76 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:45,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26713 states. [2022-11-19 07:57:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26713 to 26017. [2022-11-19 07:57:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26017 states, 25865 states have (on average 3.899362072298473) internal successors, (100857), 26016 states have internal predecessors, (100857), 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 07:57:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26017 states to 26017 states and 100857 transitions. [2022-11-19 07:57:46,378 INFO L78 Accepts]: Start accepts. Automaton has 26017 states and 100857 transitions. Word has length 14 [2022-11-19 07:57:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:46,379 INFO L495 AbstractCegarLoop]: Abstraction has 26017 states and 100857 transitions. [2022-11-19 07:57:46,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 07:57:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 26017 states and 100857 transitions. [2022-11-19 07:57:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:57:46,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:46,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:46,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:57:46,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-19 07:57:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1902571331, now seen corresponding path program 1 times [2022-11-19 07:57:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:46,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716931187] [2022-11-19 07:57:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:46,477 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 07:57:46,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:46,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716931187] [2022-11-19 07:57:46,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716931187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:46,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:46,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:57:46,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743377883] [2022-11-19 07:57:46,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:46,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:57:46,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:57:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:57:46,481 INFO L87 Difference]: Start difference. First operand 26017 states and 100857 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 07:57:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:47,386 INFO L93 Difference]: Finished difference Result 34589 states and 133553 transitions. [2022-11-19 07:57:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:57:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:57:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:47,554 INFO L225 Difference]: With dead ends: 34589 [2022-11-19 07:57:47,554 INFO L226 Difference]: Without dead ends: 34589 [2022-11-19 07:57:47,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:57:47,555 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 124 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:47,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 38 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:57:47,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34589 states. [2022-11-19 07:57:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34589 to 30992. [2022-11-19 07:57:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30992 states, 30840 states have (on average 3.9890077821011674) internal successors, (123021), 30991 states have internal predecessors, (123021), 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 07:57:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30992 states to 30992 states and 123021 transitions. [2022-11-19 07:57:48,984 INFO L78 Accepts]: Start accepts. Automaton has 30992 states and 123021 transitions. Word has length 14 [2022-11-19 07:57:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 30992 states and 123021 transitions. [2022-11-19 07:57:48,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 07:57:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 30992 states and 123021 transitions. [2022-11-19 07:57:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:57:48,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:48,987 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-19 07:57:48,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:57:48,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-19 07:57:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1009561053, now seen corresponding path program 1 times [2022-11-19 07:57:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:48,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270687339] [2022-11-19 07:57:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:48,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:57:49,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:57:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:57:49,027 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:57:49,028 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:57:49,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-19 07:57:49,028 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-19 07:57:49,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-19 07:57:49,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-19 07:57:49,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-19 07:57:49,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-19 07:57:49,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-19 07:57:49,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-19 07:57:49,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-19 07:57:49,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-19 07:57:49,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-19 07:57:49,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-19 07:57:49,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-19 07:57:49,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-19 07:57:49,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-19 07:57:49,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-19 07:57:49,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-19 07:57:49,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-19 07:57:49,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-19 07:57:49,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-19 07:57:49,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-19 07:57:49,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-19 07:57:49,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-19 07:57:49,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-19 07:57:49,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-19 07:57:49,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:57:49,038 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:49,038 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:57:49,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-19 07:57:49,093 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:57:49,100 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:57:49,101 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 228 transitions, 488 flow [2022-11-19 07:57:49,101 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 228 transitions, 488 flow [2022-11-19 07:57:49,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 228 transitions, 488 flow [2022-11-19 07:57:49,205 INFO L130 PetriNetUnfolder]: 22/282 cut-off events. [2022-11-19 07:57:49,205 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-19 07:57:49,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 282 events. 22/282 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 866 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2022-11-19 07:57:49,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-11-19 07:57:55,433 INFO L134 LiptonReduction]: Checked pairs total: 90615 [2022-11-19 07:57:55,433 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-11-19 07:57:55,434 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 204 flow [2022-11-19 07:58:19,448 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 660725 states, 655528 states have (on average 5.050868917879938) internal successors, (3310986), 660724 states have internal predecessors, (3310986), 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 07:58:19,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:58:19,450 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;@1d3b6fcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:58:19,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-19 07:58:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 660725 states, 655528 states have (on average 5.050868917879938) internal successors, (3310986), 660724 states have internal predecessors, (3310986), 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 07:58:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:58:20,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:20,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:58:20,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-19 07:58:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1516478641, now seen corresponding path program 1 times [2022-11-19 07:58:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:20,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237112393] [2022-11-19 07:58:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:20,460 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 07:58:20,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:20,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237112393] [2022-11-19 07:58:20,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237112393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:20,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:20,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:58:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237404443] [2022-11-19 07:58:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:20,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:58:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:58:20,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:58:21,380 INFO L87 Difference]: Start difference. First operand has 660725 states, 655528 states have (on average 5.050868917879938) internal successors, (3310986), 660724 states have internal predecessors, (3310986), 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)