./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:47:17,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:47:17,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:47:17,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:47:17,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:47:17,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:47:17,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:47:17,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:47:17,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:47:17,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:47:17,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:47:17,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:47:17,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:47:17,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:47:17,332 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:47:17,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:47:17,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:47:17,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:47:17,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:47:17,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:47:17,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:47:17,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:47:17,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:47:17,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:47:17,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:47:17,339 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:47:17,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:47:17,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:47:17,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:47:17,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:47:17,340 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:47:17,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:47:17,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:47:17,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:47:17,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:47:17,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:47:17,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:47:17,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:47:17,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:47:17,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:47:17,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:47:17,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:47:17,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:47:17,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:47:17,343 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2024-11-17 07:47:17,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:47:17,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:47:17,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:47:17,610 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:47:17,611 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:47:17,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-17 07:47:19,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:47:19,299 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:47:19,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2024-11-17 07:47:19,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c74aead/bc319ecc9c7b42349620ba75262e98d1/FLAG1b4abdef4 [2024-11-17 07:47:19,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c74aead/bc319ecc9c7b42349620ba75262e98d1 [2024-11-17 07:47:19,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:47:19,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:47:19,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:47:19,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:47:19,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:47:19,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:47:19" (1/1) ... [2024-11-17 07:47:19,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54042dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:19, skipping insertion in model container [2024-11-17 07:47:19,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:47:19" (1/1) ... [2024-11-17 07:47:19,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:47:19,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:47:19,963 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:47:20,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:47:20,083 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:47:20,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20 WrapperNode [2024-11-17 07:47:20,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:47:20,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:47:20,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:47:20,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:47:20,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,154 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2024-11-17 07:47:20,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:47:20,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:47:20,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:47:20,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:47:20,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,196 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 2, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 0, 5]. The 1 writes are split as follows [0, 0, 0, 1, 0]. [2024-11-17 07:47:20,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,210 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,217 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:47:20,222 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:47:20,222 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:47:20,222 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:47:20,223 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (1/1) ... [2024-11-17 07:47:20,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:47:20,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:20,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:47:20,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:47:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:47:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:47:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:47:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:47:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:47:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:47:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:47:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 07:47:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:47:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:47:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:47:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:47:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 07:47:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:47:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:47:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:47:20,303 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:47:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:47:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:47:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:47:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:47:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 07:47:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:47:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:47:20,306 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:47:20,446 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:47:20,448 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:47:20,616 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L945: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:47:20,617 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L945-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 07:47:20,661 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:47:20,661 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:47:20,809 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:47:20,810 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:47:20,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:47:20 BoogieIcfgContainer [2024-11-17 07:47:20,811 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:47:20,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:47:20,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:47:20,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:47:20,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:47:19" (1/3) ... [2024-11-17 07:47:20,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:20, skipping insertion in model container [2024-11-17 07:47:20,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:47:20" (2/3) ... [2024-11-17 07:47:20,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:47:20, skipping insertion in model container [2024-11-17 07:47:20,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:47:20" (3/3) ... [2024-11-17 07:47:20,820 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2024-11-17 07:47:20,837 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:47:20,837 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:47:20,837 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:47:20,879 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:47:20,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 76 transitions, 159 flow [2024-11-17 07:47:20,978 INFO L124 PetriNetUnfolderBase]: 21/105 cut-off events. [2024-11-17 07:47:20,979 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:47:20,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 21/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 322 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2024-11-17 07:47:20,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 76 transitions, 159 flow [2024-11-17 07:47:20,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 75 transitions, 157 flow [2024-11-17 07:47:20,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:21,004 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b6f0644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:21,004 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:47:21,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:21,010 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-17 07:47:21,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:21,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:21,011 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:21,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:47:21,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1684307715, now seen corresponding path program 1 times [2024-11-17 07:47:21,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:21,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545692154] [2024-11-17 07:47:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:21,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545692154] [2024-11-17 07:47:21,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545692154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:21,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:21,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655538889] [2024-11-17 07:47:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:21,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:21,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2024-11-17 07:47:21,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-17 07:47:21,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:21,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2024-11-17 07:47:21,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:21,633 INFO L124 PetriNetUnfolderBase]: 168/520 cut-off events. [2024-11-17 07:47:21,634 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:47:21,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 520 events. 168/520 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2745 event pairs, 0 based on Foata normal form. 139/606 useless extension candidates. Maximal degree in co-relation 810. Up to 279 conditions per place. [2024-11-17 07:47:21,640 INFO L140 encePairwiseOnDemand]: 60/76 looper letters, 48 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-17 07:47:21,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 281 flow [2024-11-17 07:47:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-17 07:47:21,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7138157894736842 [2024-11-17 07:47:21,655 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 157 flow. Second operand 4 states and 217 transitions. [2024-11-17 07:47:21,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 281 flow [2024-11-17 07:47:21,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 281 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:21,661 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 143 flow [2024-11-17 07:47:21,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-11-17 07:47:21,666 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-11-17 07:47:21,667 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 143 flow [2024-11-17 07:47:21,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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) [2024-11-17 07:47:21,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:21,667 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:21,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:47:21,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:47:21,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:21,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1866194487, now seen corresponding path program 1 times [2024-11-17 07:47:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:21,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107549063] [2024-11-17 07:47:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:21,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:21,715 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:47:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:21,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:47:21,772 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:47:21,775 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-17 07:47:21,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:47:21,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:47:21,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:47:21,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:47:21,778 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:47:21,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-17 07:47:21,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-17 07:47:21,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-17 07:47:21,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:47:21,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:47:21,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:47:21,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:47:21,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:47:21,780 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:47:21,784 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:47:21,785 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:47:21,814 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:47:21,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 111 transitions, 238 flow [2024-11-17 07:47:21,842 INFO L124 PetriNetUnfolderBase]: 37/191 cut-off events. [2024-11-17 07:47:21,842 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:47:21,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 191 events. 37/191 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 706 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 113. Up to 9 conditions per place. [2024-11-17 07:47:21,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 111 transitions, 238 flow [2024-11-17 07:47:21,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 111 transitions, 238 flow [2024-11-17 07:47:21,849 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:21,850 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b6f0644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:21,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 07:47:21,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:21,853 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:47:21,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:21,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:21,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:21,854 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:21,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash 673135748, now seen corresponding path program 1 times [2024-11-17 07:47:21,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:21,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920788299] [2024-11-17 07:47:21,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:21,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:21,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920788299] [2024-11-17 07:47:21,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920788299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:21,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:21,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:21,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684064423] [2024-11-17 07:47:21,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:21,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:21,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2024-11-17 07:47:21,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-11-17 07:47:21,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:21,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2024-11-17 07:47:21,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:23,261 INFO L124 PetriNetUnfolderBase]: 4886/10783 cut-off events. [2024-11-17 07:47:23,262 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-17 07:47:23,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18287 conditions, 10783 events. 4886/10783 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 96942 event pairs, 2084 based on Foata normal form. 3168/12973 useless extension candidates. Maximal degree in co-relation 1460. Up to 7400 conditions per place. [2024-11-17 07:47:23,341 INFO L140 encePairwiseOnDemand]: 89/111 looper letters, 66 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-11-17 07:47:23,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 120 transitions, 394 flow [2024-11-17 07:47:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2024-11-17 07:47:23,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6869369369369369 [2024-11-17 07:47:23,345 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 238 flow. Second operand 4 states and 305 transitions. [2024-11-17 07:47:23,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 120 transitions, 394 flow [2024-11-17 07:47:23,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 120 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:23,353 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 230 flow [2024-11-17 07:47:23,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-11-17 07:47:23,354 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 5 predicate places. [2024-11-17 07:47:23,355 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 230 flow [2024-11-17 07:47:23,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-11-17 07:47:23,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:23,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:23,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:47:23,356 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:23,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1710920538, now seen corresponding path program 1 times [2024-11-17 07:47:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:23,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987066950] [2024-11-17 07:47:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:23,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:23,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:23,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987066950] [2024-11-17 07:47:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987066950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:23,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726311460] [2024-11-17 07:47:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:23,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:23,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:23,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:47:23,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:47:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:23,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:47:23,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:23,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726311460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:23,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:23,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:47:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578998743] [2024-11-17 07:47:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:23,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:47:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:47:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:47:23,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2024-11-17 07:47:23,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-11-17 07:47:23,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:23,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2024-11-17 07:47:23,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:24,776 INFO L124 PetriNetUnfolderBase]: 4232/9193 cut-off events. [2024-11-17 07:47:24,776 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2024-11-17 07:47:24,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16215 conditions, 9193 events. 4232/9193 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 79373 event pairs, 396 based on Foata normal form. 144/8530 useless extension candidates. Maximal degree in co-relation 1345. Up to 3893 conditions per place. [2024-11-17 07:47:24,878 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 106 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2024-11-17 07:47:24,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 163 transitions, 584 flow [2024-11-17 07:47:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:47:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:47:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2024-11-17 07:47:24,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6291291291291291 [2024-11-17 07:47:24,883 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 230 flow. Second operand 6 states and 419 transitions. [2024-11-17 07:47:24,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 163 transitions, 584 flow [2024-11-17 07:47:24,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 163 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:24,890 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 236 flow [2024-11-17 07:47:24,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2024-11-17 07:47:24,892 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 8 predicate places. [2024-11-17 07:47:24,893 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 236 flow [2024-11-17 07:47:24,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-11-17 07:47:24,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:24,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:24,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:47:25,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:25,099 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:25,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2030549441, now seen corresponding path program 1 times [2024-11-17 07:47:25,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:25,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063928634] [2024-11-17 07:47:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:25,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:25,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:25,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063928634] [2024-11-17 07:47:25,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063928634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:25,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:25,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:25,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560534211] [2024-11-17 07:47:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:25,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:25,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:25,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 111 [2024-11-17 07:47:25,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-17 07:47:25,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:25,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 111 [2024-11-17 07:47:25,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:26,645 INFO L124 PetriNetUnfolderBase]: 6314/13608 cut-off events. [2024-11-17 07:47:26,646 INFO L125 PetriNetUnfolderBase]: For 1151/1312 co-relation queries the response was YES. [2024-11-17 07:47:26,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23894 conditions, 13608 events. 6314/13608 cut-off events. For 1151/1312 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 123893 event pairs, 1497 based on Foata normal form. 223/13002 useless extension candidates. Maximal degree in co-relation 19172. Up to 6459 conditions per place. [2024-11-17 07:47:26,716 INFO L140 encePairwiseOnDemand]: 102/111 looper letters, 122 selfloop transitions, 12 changer transitions 0/187 dead transitions. [2024-11-17 07:47:26,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 187 transitions, 734 flow [2024-11-17 07:47:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:47:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:47:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2024-11-17 07:47:26,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7207207207207207 [2024-11-17 07:47:26,719 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 236 flow. Second operand 5 states and 400 transitions. [2024-11-17 07:47:26,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 187 transitions, 734 flow [2024-11-17 07:47:26,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 187 transitions, 723 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:47:26,725 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 324 flow [2024-11-17 07:47:26,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2024-11-17 07:47:26,726 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 13 predicate places. [2024-11-17 07:47:26,726 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 324 flow [2024-11-17 07:47:26,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-11-17 07:47:26,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:26,727 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:47:26,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:47:26,727 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:26,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1498929537, now seen corresponding path program 1 times [2024-11-17 07:47:26,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:26,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813482968] [2024-11-17 07:47:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:26,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:47:26,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:26,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813482968] [2024-11-17 07:47:26,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813482968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:26,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:47:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093672555] [2024-11-17 07:47:26,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:26,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:26,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:26,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 111 [2024-11-17 07:47:26,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-17 07:47:26,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:26,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 111 [2024-11-17 07:47:26,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:28,118 INFO L124 PetriNetUnfolderBase]: 6320/14144 cut-off events. [2024-11-17 07:47:28,118 INFO L125 PetriNetUnfolderBase]: For 5039/5066 co-relation queries the response was YES. [2024-11-17 07:47:28,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27663 conditions, 14144 events. 6320/14144 cut-off events. For 5039/5066 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 131598 event pairs, 2379 based on Foata normal form. 162/13427 useless extension candidates. Maximal degree in co-relation 24192. Up to 8423 conditions per place. [2024-11-17 07:47:28,211 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 104 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2024-11-17 07:47:28,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 161 transitions, 714 flow [2024-11-17 07:47:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2024-11-17 07:47:28,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6576576576576577 [2024-11-17 07:47:28,214 INFO L175 Difference]: Start difference. First operand has 108 places, 107 transitions, 324 flow. Second operand 4 states and 292 transitions. [2024-11-17 07:47:28,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 161 transitions, 714 flow [2024-11-17 07:47:28,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 161 transitions, 710 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:28,231 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 336 flow [2024-11-17 07:47:28,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2024-11-17 07:47:28,234 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 15 predicate places. [2024-11-17 07:47:28,234 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 336 flow [2024-11-17 07:47:28,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-17 07:47:28,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:28,235 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:47:28,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:47:28,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:47:28,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -164735359, now seen corresponding path program 1 times [2024-11-17 07:47:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75307266] [2024-11-17 07:47:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:28,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:28,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:47:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:47:28,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:47:28,287 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:47:28,288 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-17 07:47:28,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-17 07:47:28,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-17 07:47:28,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-17 07:47:28,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-17 07:47:28,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-17 07:47:28,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-17 07:47:28,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-17 07:47:28,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-17 07:47:28,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-17 07:47:28,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-17 07:47:28,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-17 07:47:28,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-17 07:47:28,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-17 07:47:28,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-17 07:47:28,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-17 07:47:28,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-17 07:47:28,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:47:28,296 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 07:47:28,297 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:47:28,297 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:47:28,330 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:47:28,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 146 transitions, 319 flow [2024-11-17 07:47:28,378 INFO L124 PetriNetUnfolderBase]: 58/302 cut-off events. [2024-11-17 07:47:28,379 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 07:47:28,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 302 events. 58/302 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1228 event pairs, 1 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 206. Up to 16 conditions per place. [2024-11-17 07:47:28,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 146 transitions, 319 flow [2024-11-17 07:47:28,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 146 transitions, 319 flow [2024-11-17 07:47:28,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:47:28,389 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b6f0644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:47:28,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 07:47:28,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:47:28,393 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:47:28,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:47:28,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:28,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:47:28,394 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:28,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 697384741, now seen corresponding path program 1 times [2024-11-17 07:47:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011173798] [2024-11-17 07:47:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:28,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011173798] [2024-11-17 07:47:28,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011173798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:28,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228326799] [2024-11-17 07:47:28,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:28,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:28,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:28,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 146 [2024-11-17 07:47:28,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 146 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2024-11-17 07:47:28,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:28,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 146 [2024-11-17 07:47:28,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:41,186 INFO L124 PetriNetUnfolderBase]: 91474/167007 cut-off events. [2024-11-17 07:47:41,186 INFO L125 PetriNetUnfolderBase]: For 1959/1959 co-relation queries the response was YES. [2024-11-17 07:47:41,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292637 conditions, 167007 events. 91474/167007 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 3907. Compared 1826503 event pairs, 55768 based on Foata normal form. 56255/211283 useless extension candidates. Maximal degree in co-relation 19109. Up to 124468 conditions per place. [2024-11-17 07:47:42,559 INFO L140 encePairwiseOnDemand]: 118/146 looper letters, 79 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-11-17 07:47:42,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 149 transitions, 489 flow [2024-11-17 07:47:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-11-17 07:47:42,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6643835616438356 [2024-11-17 07:47:42,561 INFO L175 Difference]: Start difference. First operand has 125 places, 146 transitions, 319 flow. Second operand 4 states and 388 transitions. [2024-11-17 07:47:42,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 149 transitions, 489 flow [2024-11-17 07:47:42,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:42,567 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 299 flow [2024-11-17 07:47:42,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2024-11-17 07:47:42,568 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 5 predicate places. [2024-11-17 07:47:42,568 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 299 flow [2024-11-17 07:47:42,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2024-11-17 07:47:42,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:42,569 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:42,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:47:42,571 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:42,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 480271324, now seen corresponding path program 1 times [2024-11-17 07:47:42,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355890036] [2024-11-17 07:47:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:42,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:42,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355890036] [2024-11-17 07:47:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355890036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:42,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737954062] [2024-11-17 07:47:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:42,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:42,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:42,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:47:42,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:47:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:42,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:47:42,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:42,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:42,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737954062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:42,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:42,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:47:42,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162047256] [2024-11-17 07:47:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:42,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:47:42,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:47:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:47:42,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 146 [2024-11-17 07:47:42,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 126 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 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) [2024-11-17 07:47:42,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:42,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 146 [2024-11-17 07:47:42,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:52,842 INFO L124 PetriNetUnfolderBase]: 76961/138863 cut-off events. [2024-11-17 07:47:52,842 INFO L125 PetriNetUnfolderBase]: For 7168/7168 co-relation queries the response was YES. [2024-11-17 07:47:53,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250392 conditions, 138863 events. 76961/138863 cut-off events. For 7168/7168 co-relation queries the response was YES. Maximal size of possible extension queue 3090. Compared 1471323 event pairs, 17756 based on Foata normal form. 1872/130043 useless extension candidates. Maximal degree in co-relation 229371. Up to 63134 conditions per place. [2024-11-17 07:47:53,924 INFO L140 encePairwiseOnDemand]: 141/146 looper letters, 141 selfloop transitions, 6 changer transitions 0/214 dead transitions. [2024-11-17 07:47:53,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 214 transitions, 767 flow [2024-11-17 07:47:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:47:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:47:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2024-11-17 07:47:53,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6278538812785388 [2024-11-17 07:47:53,926 INFO L175 Difference]: Start difference. First operand has 130 places, 126 transitions, 299 flow. Second operand 6 states and 550 transitions. [2024-11-17 07:47:53,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 214 transitions, 767 flow [2024-11-17 07:47:53,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 765 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:53,933 INFO L231 Difference]: Finished difference. Result has 133 places, 125 transitions, 305 flow [2024-11-17 07:47:53,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2024-11-17 07:47:53,934 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 8 predicate places. [2024-11-17 07:47:53,934 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 305 flow [2024-11-17 07:47:53,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 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) [2024-11-17 07:47:53,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:53,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:53,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:47:54,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-17 07:47:54,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:54,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash 259442530, now seen corresponding path program 1 times [2024-11-17 07:47:54,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:54,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848833971] [2024-11-17 07:47:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848833971] [2024-11-17 07:47:54,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848833971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:54,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:54,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:54,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618626933] [2024-11-17 07:47:54,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:54,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:54,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:54,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:54,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:54,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 146 [2024-11-17 07:47:54,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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) [2024-11-17 07:47:54,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:54,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 146 [2024-11-17 07:47:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:10,319 INFO L124 PetriNetUnfolderBase]: 125031/225630 cut-off events. [2024-11-17 07:48:10,319 INFO L125 PetriNetUnfolderBase]: For 16429/18677 co-relation queries the response was YES. [2024-11-17 07:48:10,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404345 conditions, 225630 events. 125031/225630 cut-off events. For 16429/18677 co-relation queries the response was YES. Maximal size of possible extension queue 5321. Compared 2507632 event pairs, 39786 based on Foata normal form. 3006/215786 useless extension candidates. Maximal degree in co-relation 273831. Up to 117003 conditions per place.