./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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 ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c -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.graphml --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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:54:48,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:54:48,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:54:48,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:54:48,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:54:48,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:54:48,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:54:48,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:54:48,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:54:48,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:54:48,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:54:48,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:54:48,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:54:48,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:54:48,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:54:48,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:54:48,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:54:48,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:54:48,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:54:48,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:54:48,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:54:48,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:54:48,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:54:48,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:54:48,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:54:48,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:54:48,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:54:48,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:54:48,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:54:48,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:54:48,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:54:48,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:54:48,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:54:48,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:54:48,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:54:48,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:54:48,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:54:48,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:54:48,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:54:48,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:54:48,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:54:48,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:54:48,360 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:54:48,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:54:48,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:54:48,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:54:48,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:54:48,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:54:48,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:54:48,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:54:48,363 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:54:48,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:54:48,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:54:48,364 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:54:48,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:54:48,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:54:48,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:54:48,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:54:48,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:54:48,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:54:48,366 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:54:48,366 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:54:48,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:54:48,366 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:54:48,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:54:48,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:54:48,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:54:48,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:54:48,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:54:48,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:54:48,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:54:48,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:54:48,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:54:48,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:54:48,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:54:48,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:54:48,369 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:54:48,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:54:48,369 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:54:48,369 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:54:48,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:54:48,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:54:48,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:54:48,665 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:54:48,666 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:54:48,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-08-30 15:54:49,831 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:54:50,033 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:54:50,034 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-08-30 15:54:50,039 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753e13c74/7b90b694493f4f1a9ba333c3b9797d3c/FLAG4bf5f1f68 [2023-08-30 15:54:50,052 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753e13c74/7b90b694493f4f1a9ba333c3b9797d3c [2023-08-30 15:54:50,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:54:50,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:54:50,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:54:50,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:54:50,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:54:50,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e673825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50, skipping insertion in model container [2023-08-30 15:54:50,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:54:50,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:54:50,209 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2023-08-30 15:54:50,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:54:50,222 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:54:50,241 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2023-08-30 15:54:50,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:54:50,252 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:54:50,252 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:54:50,258 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:54:50,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50 WrapperNode [2023-08-30 15:54:50,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:54:50,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:54:50,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:54:50,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:54:50,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,309 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 160 [2023-08-30 15:54:50,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:54:50,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:54:50,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:54:50,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:54:50,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:54:50,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:54:50,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:54:50,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:54:50,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (1/1) ... [2023-08-30 15:54:50,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:54:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:54:50,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:54:50,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:54:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:54:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:54:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:54:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:54:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:54:50,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:54:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:54:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:54:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:54:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:54:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:54:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:54:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:54:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:54:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:54:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:54:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:54:50,446 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:54:50,597 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:54:50,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:54:50,918 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:54:50,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:54:50,966 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:54:50,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:54:50 BoogieIcfgContainer [2023-08-30 15:54:50,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:54:50,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:54:50,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:54:50,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:54:50,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:54:50" (1/3) ... [2023-08-30 15:54:50,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56721a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:54:50, skipping insertion in model container [2023-08-30 15:54:50,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:54:50" (2/3) ... [2023-08-30 15:54:50,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56721a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:54:50, skipping insertion in model container [2023-08-30 15:54:50,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:54:50" (3/3) ... [2023-08-30 15:54:50,985 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-08-30 15:54:50,992 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:54:50,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:54:50,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 15:54:50,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:54:51,114 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:54:51,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 236 transitions, 496 flow [2023-08-30 15:54:51,241 INFO L130 PetriNetUnfolder]: 20/233 cut-off events. [2023-08-30 15:54:51,241 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:54:51,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 233 events. 20/233 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-30 15:54:51,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 236 transitions, 496 flow [2023-08-30 15:54:51,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 215 transitions, 445 flow [2023-08-30 15:54:51,260 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:54:51,273 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 215 transitions, 445 flow [2023-08-30 15:54:51,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 215 transitions, 445 flow [2023-08-30 15:54:51,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 215 transitions, 445 flow [2023-08-30 15:54:51,329 INFO L130 PetriNetUnfolder]: 19/215 cut-off events. [2023-08-30 15:54:51,329 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:54:51,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 19/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-30 15:54:51,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 3058 [2023-08-30 15:54:57,688 INFO L134 LiptonReduction]: Checked pairs total: 5037 [2023-08-30 15:54:57,689 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-30 15:54:57,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:54:57,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b992b0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:54:57,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 15:54:57,707 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:54:57,707 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:54:57,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:57,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:54:57,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:54:57,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash 28926, now seen corresponding path program 1 times [2023-08-30 15:54:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:57,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104838114] [2023-08-30 15:54:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:57,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104838114] [2023-08-30 15:54:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104838114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:54:57,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:54:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:54:57,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259450316] [2023-08-30 15:54:57,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:54:57,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:54:57,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:54:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:54:57,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:54:58,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-30 15:54:58,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:54:58,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-30 15:54:58,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:54:58,511 INFO L130 PetriNetUnfolder]: 3103/4125 cut-off events. [2023-08-30 15:54:58,512 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2023-08-30 15:54:58,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8407 conditions, 4125 events. 3103/4125 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 18907 event pairs, 1674 based on Foata normal form. 0/1778 useless extension candidates. Maximal degree in co-relation 3590. Up to 2033 conditions per place. [2023-08-30 15:54:58,541 INFO L137 encePairwiseOnDemand]: 460/474 looper letters, 63 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-08-30 15:54:58,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 72 transitions, 312 flow [2023-08-30 15:54:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:54:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:54:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-08-30 15:54:58,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838255977496484 [2023-08-30 15:54:58,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-08-30 15:54:58,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-08-30 15:54:58,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:54:58,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-08-30 15:54:58,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,580 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 101 flow. Second operand 3 states and 688 transitions. [2023-08-30 15:54:58,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 72 transitions, 312 flow [2023-08-30 15:54:58,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:54:58,587 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 144 flow [2023-08-30 15:54:58,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2023-08-30 15:54:58,591 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-08-30 15:54:58,592 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 144 flow [2023-08-30 15:54:58,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:58,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:54:58,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:54:58,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:54:58,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:54:58,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:54:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 898954, now seen corresponding path program 1 times [2023-08-30 15:54:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:54:58,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215647629] [2023-08-30 15:54:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:58,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:54:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:58,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:54:58,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215647629] [2023-08-30 15:54:58,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215647629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:54:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115120540] [2023-08-30 15:54:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:54:58,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:54:58,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:54:58,769 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) [2023-08-30 15:54:58,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:54:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:54:58,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:54:58,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:54:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:58,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:54:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:54:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115120540] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:54:58,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:54:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:54:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251551145] [2023-08-30 15:54:58,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:54:58,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:54:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:54:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:54:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:54:59,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-30 15:54:59,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:54:59,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:54:59,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-30 15:54:59,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:00,159 INFO L130 PetriNetUnfolder]: 7765/10311 cut-off events. [2023-08-30 15:55:00,160 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 15:55:00,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20844 conditions, 10311 events. 7765/10311 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 53154 event pairs, 4185 based on Foata normal form. 0/4460 useless extension candidates. Maximal degree in co-relation 16591. Up to 2031 conditions per place. [2023-08-30 15:55:00,220 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 138 selfloop transitions, 33 changer transitions 0/174 dead transitions. [2023-08-30 15:55:00,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 174 transitions, 826 flow [2023-08-30 15:55:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:55:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:55:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1601 transitions. [2023-08-30 15:55:00,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48251959011452683 [2023-08-30 15:55:00,225 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1601 transitions. [2023-08-30 15:55:00,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1601 transitions. [2023-08-30 15:55:00,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:00,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1601 transitions. [2023-08-30 15:55:00,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.71428571428572) internal successors, (1601), 7 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:00,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 474.0) internal successors, (3792), 8 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:00,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 474.0) internal successors, (3792), 8 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:00,236 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 144 flow. Second operand 7 states and 1601 transitions. [2023-08-30 15:55:00,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 174 transitions, 826 flow [2023-08-30 15:55:00,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 174 transitions, 802 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:00,242 INFO L231 Difference]: Finished difference. Result has 50 places, 70 transitions, 351 flow [2023-08-30 15:55:00,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=50, PETRI_TRANSITIONS=70} [2023-08-30 15:55:00,243 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-30 15:55:00,243 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 70 transitions, 351 flow [2023-08-30 15:55:00,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:00,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:00,244 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:55:00,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:55:00,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:00,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:00,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash 27868414, now seen corresponding path program 1 times [2023-08-30 15:55:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:00,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009627217] [2023-08-30 15:55:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:00,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:00,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009627217] [2023-08-30 15:55:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009627217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:00,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882362956] [2023-08-30 15:55:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:00,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-08-30 15:55:00,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 70 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:00,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:00,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-08-30 15:55:00,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:01,359 INFO L130 PetriNetUnfolder]: 7756/10299 cut-off events. [2023-08-30 15:55:01,359 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 15:55:01,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20847 conditions, 10299 events. 7756/10299 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 53636 event pairs, 4185 based on Foata normal form. 2/4457 useless extension candidates. Maximal degree in co-relation 12480. Up to 10129 conditions per place. [2023-08-30 15:55:01,414 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 54 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 15:55:01,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 380 flow [2023-08-30 15:55:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-30 15:55:01,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4549929676511955 [2023-08-30 15:55:01,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-30 15:55:01,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-30 15:55:01,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:01,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-30 15:55:01,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,424 INFO L175 Difference]: Start difference. First operand has 50 places, 70 transitions, 351 flow. Second operand 3 states and 647 transitions. [2023-08-30 15:55:01,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 380 flow [2023-08-30 15:55:01,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 350 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:01,427 INFO L231 Difference]: Finished difference. Result has 47 places, 58 transitions, 242 flow [2023-08-30 15:55:01,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=47, PETRI_TRANSITIONS=58} [2023-08-30 15:55:01,428 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-08-30 15:55:01,428 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 58 transitions, 242 flow [2023-08-30 15:55:01,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:01,429 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:55:01,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:55:01,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:01,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:01,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1011812650, now seen corresponding path program 2 times [2023-08-30 15:55:01,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:01,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200311398] [2023-08-30 15:55:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:01,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200311398] [2023-08-30 15:55:01,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200311398] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55925779] [2023-08-30 15:55:01,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:55:01,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:01,516 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) [2023-08-30 15:55:01,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:55:01,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:55:01,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:55:01,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:55:01,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:55:01,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:01,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55925779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:01,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:01,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:55:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760788992] [2023-08-30 15:55:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:01,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:01,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:01,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:01,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:55:01,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 474 [2023-08-30 15:55:01,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 58 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:01,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:01,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 474 [2023-08-30 15:55:01,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:02,420 INFO L130 PetriNetUnfolder]: 7756/10298 cut-off events. [2023-08-30 15:55:02,421 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 15:55:02,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20825 conditions, 10298 events. 7756/10298 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 53708 event pairs, 4185 based on Foata normal form. 1/4457 useless extension candidates. Maximal degree in co-relation 20813. Up to 10123 conditions per place. [2023-08-30 15:55:02,467 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 48 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-30 15:55:02,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 340 flow [2023-08-30 15:55:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-08-30 15:55:02,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45921237693389594 [2023-08-30 15:55:02,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-08-30 15:55:02,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-08-30 15:55:02,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:02,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-08-30 15:55:02,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:02,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:02,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:02,475 INFO L175 Difference]: Start difference. First operand has 47 places, 58 transitions, 242 flow. Second operand 3 states and 653 transitions. [2023-08-30 15:55:02,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 340 flow [2023-08-30 15:55:02,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:02,478 INFO L231 Difference]: Finished difference. Result has 47 places, 57 transitions, 243 flow [2023-08-30 15:55:02,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=47, PETRI_TRANSITIONS=57} [2023-08-30 15:55:02,478 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-08-30 15:55:02,479 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 57 transitions, 243 flow [2023-08-30 15:55:02,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:02,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:02,479 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:55:02,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:02,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 15:55:02,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:02,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1919811594, now seen corresponding path program 1 times [2023-08-30 15:55:02,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:02,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227788641] [2023-08-30 15:55:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:02,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:55:02,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227788641] [2023-08-30 15:55:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227788641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:02,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:55:02,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365392439] [2023-08-30 15:55:02,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:02,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:55:02,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:55:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:55:02,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 15:55:02,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 57 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:02,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:02,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 15:55:02,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:03,524 INFO L130 PetriNetUnfolder]: 7416/9864 cut-off events. [2023-08-30 15:55:03,525 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 15:55:03,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19958 conditions, 9864 events. 7416/9864 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 49900 event pairs, 4002 based on Foata normal form. 2/4330 useless extension candidates. Maximal degree in co-relation 19945. Up to 8098 conditions per place. [2023-08-30 15:55:03,583 INFO L137 encePairwiseOnDemand]: 466/474 looper letters, 66 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2023-08-30 15:55:03,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 467 flow [2023-08-30 15:55:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:55:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:55:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 849 transitions. [2023-08-30 15:55:03,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477848101265823 [2023-08-30 15:55:03,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 849 transitions. [2023-08-30 15:55:03,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 849 transitions. [2023-08-30 15:55:03,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:03,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 849 transitions. [2023-08-30 15:55:03,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:03,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:03,596 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:03,596 INFO L175 Difference]: Start difference. First operand has 47 places, 57 transitions, 243 flow. Second operand 4 states and 849 transitions. [2023-08-30 15:55:03,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 467 flow [2023-08-30 15:55:03,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 84 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:03,600 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 291 flow [2023-08-30 15:55:03,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-08-30 15:55:03,602 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-30 15:55:03,603 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 291 flow [2023-08-30 15:55:03,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:03,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:03,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:03,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:55:03,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:03,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -602529099, now seen corresponding path program 1 times [2023-08-30 15:55:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:03,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722348005] [2023-08-30 15:55:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722348005] [2023-08-30 15:55:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722348005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:03,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:03,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865425689] [2023-08-30 15:55:03,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:03,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 15:55:03,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:03,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:03,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 15:55:03,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:04,811 INFO L130 PetriNetUnfolder]: 12121/15955 cut-off events. [2023-08-30 15:55:04,811 INFO L131 PetriNetUnfolder]: For 1327/1327 co-relation queries the response was YES. [2023-08-30 15:55:04,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33604 conditions, 15955 events. 12121/15955 cut-off events. For 1327/1327 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 84135 event pairs, 3502 based on Foata normal form. 0/8420 useless extension candidates. Maximal degree in co-relation 33589. Up to 10065 conditions per place. [2023-08-30 15:55:04,910 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 77 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 15:55:04,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 500 flow [2023-08-30 15:55:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-30 15:55:04,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48452883263009844 [2023-08-30 15:55:04,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-30 15:55:04,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-30 15:55:04,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:04,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-30 15:55:04,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,919 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 291 flow. Second operand 3 states and 689 transitions. [2023-08-30 15:55:04,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 500 flow [2023-08-30 15:55:04,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 484 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:04,926 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 289 flow [2023-08-30 15:55:04,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2023-08-30 15:55:04,927 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2023-08-30 15:55:04,927 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 289 flow [2023-08-30 15:55:04,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:04,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:04,928 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:55:04,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:55:04,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:04,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1987201622, now seen corresponding path program 1 times [2023-08-30 15:55:04,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251710930] [2023-08-30 15:55:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:04,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:55:05,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:05,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251710930] [2023-08-30 15:55:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251710930] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620733111] [2023-08-30 15:55:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:05,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:05,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:05,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:05,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:55:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:05,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:55:05,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:05,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620733111] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:05,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 15:55:05,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933899201] [2023-08-30 15:55:05,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:05,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:55:05,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:05,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:55:05,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:55:05,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 474 [2023-08-30 15:55:05,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:05,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:05,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 474 [2023-08-30 15:55:05,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:06,667 INFO L130 PetriNetUnfolder]: 11595/15542 cut-off events. [2023-08-30 15:55:06,667 INFO L131 PetriNetUnfolder]: For 2098/2098 co-relation queries the response was YES. [2023-08-30 15:55:06,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34068 conditions, 15542 events. 11595/15542 cut-off events. For 2098/2098 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 84189 event pairs, 6603 based on Foata normal form. 516/8467 useless extension candidates. Maximal degree in co-relation 34052. Up to 8568 conditions per place. [2023-08-30 15:55:06,757 INFO L137 encePairwiseOnDemand]: 464/474 looper letters, 113 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2023-08-30 15:55:06,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 812 flow [2023-08-30 15:55:06,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:55:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:55:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2050 transitions. [2023-08-30 15:55:06,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43248945147679324 [2023-08-30 15:55:06,763 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2050 transitions. [2023-08-30 15:55:06,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2050 transitions. [2023-08-30 15:55:06,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:06,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2050 transitions. [2023-08-30 15:55:06,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 474.0) internal successors, (5214), 11 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,776 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 474.0) internal successors, (5214), 11 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,777 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 289 flow. Second operand 10 states and 2050 transitions. [2023-08-30 15:55:06,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 812 flow [2023-08-30 15:55:06,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 143 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:06,781 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 419 flow [2023-08-30 15:55:06,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=419, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-08-30 15:55:06,782 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-08-30 15:55:06,782 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 419 flow [2023-08-30 15:55:06,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:06,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:06,784 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 15:55:06,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:55:06,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:06,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:06,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:06,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1449440266, now seen corresponding path program 2 times [2023-08-30 15:55:06,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:06,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416209820] [2023-08-30 15:55:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:06,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:55:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416209820] [2023-08-30 15:55:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416209820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706790659] [2023-08-30 15:55:07,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:55:07,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:07,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:07,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:07,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:55:07,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:55:07,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:55:07,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:55:07,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:55:07,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706790659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:07,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:07,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 15:55:07,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322641048] [2023-08-30 15:55:07,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:07,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:55:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:55:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:55:07,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 474 [2023-08-30 15:55:07,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:07,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:07,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 474 [2023-08-30 15:55:07,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:07,976 INFO L130 PetriNetUnfolder]: 10170/13707 cut-off events. [2023-08-30 15:55:07,976 INFO L131 PetriNetUnfolder]: For 5313/5313 co-relation queries the response was YES. [2023-08-30 15:55:08,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29127 conditions, 13707 events. 10170/13707 cut-off events. For 5313/5313 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 73969 event pairs, 5802 based on Foata normal form. 773/7364 useless extension candidates. Maximal degree in co-relation 29106. Up to 13539 conditions per place. [2023-08-30 15:55:08,039 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 60 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 15:55:08,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 507 flow [2023-08-30 15:55:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-30 15:55:08,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542897327707454 [2023-08-30 15:55:08,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-30 15:55:08,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-30 15:55:08,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:08,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-30 15:55:08,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,045 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 419 flow. Second operand 3 states and 646 transitions. [2023-08-30 15:55:08,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 507 flow [2023-08-30 15:55:08,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 415 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-30 15:55:08,047 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 295 flow [2023-08-30 15:55:08,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2023-08-30 15:55:08,048 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-08-30 15:55:08,048 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 295 flow [2023-08-30 15:55:08,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:08,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:08,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:08,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:08,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1491304546, now seen corresponding path program 1 times [2023-08-30 15:55:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69014363] [2023-08-30 15:55:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:08,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:08,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69014363] [2023-08-30 15:55:08,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69014363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:08,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:08,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:08,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150898628] [2023-08-30 15:55:08,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:08,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:08,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:08,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 15:55:08,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:08,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:08,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 15:55:08,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:09,257 INFO L130 PetriNetUnfolder]: 13770/19083 cut-off events. [2023-08-30 15:55:09,258 INFO L131 PetriNetUnfolder]: For 1320/1320 co-relation queries the response was YES. [2023-08-30 15:55:09,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40838 conditions, 19083 events. 13770/19083 cut-off events. For 1320/1320 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 109838 event pairs, 5406 based on Foata normal form. 0/10149 useless extension candidates. Maximal degree in co-relation 40823. Up to 12490 conditions per place. [2023-08-30 15:55:09,344 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 81 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 15:55:09,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 515 flow [2023-08-30 15:55:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-30 15:55:09,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480309423347398 [2023-08-30 15:55:09,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-30 15:55:09,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-30 15:55:09,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:09,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-30 15:55:09,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:09,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:09,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:09,352 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 295 flow. Second operand 3 states and 683 transitions. [2023-08-30 15:55:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 515 flow [2023-08-30 15:55:09,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:09,354 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 306 flow [2023-08-30 15:55:09,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2023-08-30 15:55:09,355 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-08-30 15:55:09,355 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 306 flow [2023-08-30 15:55:09,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:09,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:09,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:09,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:55:09,356 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:09,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1014205661, now seen corresponding path program 1 times [2023-08-30 15:55:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811960709] [2023-08-30 15:55:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:09,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:09,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811960709] [2023-08-30 15:55:09,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811960709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:09,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452587380] [2023-08-30 15:55:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:09,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:09,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:09,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:55:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:09,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:55:09,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:09,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:09,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452587380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:09,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:55:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426387365] [2023-08-30 15:55:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:09,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:55:09,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:55:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:55:09,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 15:55:09,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:09,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:09,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 15:55:09,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:10,622 INFO L130 PetriNetUnfolder]: 12052/16933 cut-off events. [2023-08-30 15:55:10,622 INFO L131 PetriNetUnfolder]: For 4607/4607 co-relation queries the response was YES. [2023-08-30 15:55:10,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39563 conditions, 16933 events. 12052/16933 cut-off events. For 4607/4607 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 97807 event pairs, 7858 based on Foata normal form. 136/10714 useless extension candidates. Maximal degree in co-relation 39547. Up to 15288 conditions per place. [2023-08-30 15:55:10,687 INFO L137 encePairwiseOnDemand]: 465/474 looper letters, 84 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2023-08-30 15:55:10,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 107 transitions, 634 flow [2023-08-30 15:55:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:55:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:55:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1055 transitions. [2023-08-30 15:55:10,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451476793248945 [2023-08-30 15:55:10,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1055 transitions. [2023-08-30 15:55:10,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1055 transitions. [2023-08-30 15:55:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:10,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1055 transitions. [2023-08-30 15:55:10,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:10,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:10,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:10,698 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 306 flow. Second operand 5 states and 1055 transitions. [2023-08-30 15:55:10,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 107 transitions, 634 flow [2023-08-30 15:55:10,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 107 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:10,707 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 361 flow [2023-08-30 15:55:10,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2023-08-30 15:55:10,707 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-08-30 15:55:10,708 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 361 flow [2023-08-30 15:55:10,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:10,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:10,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:10,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:10,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 15:55:10,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:10,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash 790168321, now seen corresponding path program 1 times [2023-08-30 15:55:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:10,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003134840] [2023-08-30 15:55:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:10,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:10,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:10,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003134840] [2023-08-30 15:55:10,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003134840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208603265] [2023-08-30 15:55:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:10,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:10,959 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:10,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:55:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:11,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:55:11,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:11,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:11,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208603265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:11,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:11,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:55:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832696393] [2023-08-30 15:55:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:11,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:55:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:55:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:55:11,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 15:55:11,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:11,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:11,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 15:55:11,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:12,061 INFO L130 PetriNetUnfolder]: 10424/14668 cut-off events. [2023-08-30 15:55:12,062 INFO L131 PetriNetUnfolder]: For 3966/4763 co-relation queries the response was YES. [2023-08-30 15:55:12,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34431 conditions, 14668 events. 10424/14668 cut-off events. For 3966/4763 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 86519 event pairs, 7067 based on Foata normal form. 797/10006 useless extension candidates. Maximal degree in co-relation 34412. Up to 14143 conditions per place. [2023-08-30 15:55:12,111 INFO L137 encePairwiseOnDemand]: 465/474 looper letters, 72 selfloop transitions, 21 changer transitions 2/98 dead transitions. [2023-08-30 15:55:12,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 632 flow [2023-08-30 15:55:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:55:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:55:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-08-30 15:55:12,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417721518987342 [2023-08-30 15:55:12,114 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-08-30 15:55:12,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-08-30 15:55:12,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:12,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-08-30 15:55:12,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,121 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 361 flow. Second operand 5 states and 1047 transitions. [2023-08-30 15:55:12,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 632 flow [2023-08-30 15:55:12,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 98 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:12,129 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 383 flow [2023-08-30 15:55:12,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-08-30 15:55:12,130 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-08-30 15:55:12,130 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 383 flow [2023-08-30 15:55:12,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:12,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:12,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:12,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:12,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:12,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash -91373954, now seen corresponding path program 1 times [2023-08-30 15:55:12,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:12,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608837315] [2023-08-30 15:55:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608837315] [2023-08-30 15:55:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608837315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:12,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821428652] [2023-08-30 15:55:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:12,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:12,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:12,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 15:55:12,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:12,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:12,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 15:55:12,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:13,554 INFO L130 PetriNetUnfolder]: 13356/18884 cut-off events. [2023-08-30 15:55:13,554 INFO L131 PetriNetUnfolder]: For 6159/7261 co-relation queries the response was YES. [2023-08-30 15:55:13,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45358 conditions, 18884 events. 13356/18884 cut-off events. For 6159/7261 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 116520 event pairs, 6862 based on Foata normal form. 1102/14621 useless extension candidates. Maximal degree in co-relation 45337. Up to 12866 conditions per place. [2023-08-30 15:55:13,625 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 80 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 15:55:13,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 605 flow [2023-08-30 15:55:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 15:55:13,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-08-30 15:55:13,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 15:55:13,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 15:55:13,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:13,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 15:55:13,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:13,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:13,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:13,632 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 383 flow. Second operand 3 states and 681 transitions. [2023-08-30 15:55:13,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 605 flow [2023-08-30 15:55:13,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:13,637 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 362 flow [2023-08-30 15:55:13,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2023-08-30 15:55:13,637 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-08-30 15:55:13,637 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 362 flow [2023-08-30 15:55:13,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:13,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:13,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:13,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:55:13,638 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:13,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash -337012038, now seen corresponding path program 1 times [2023-08-30 15:55:13,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:13,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576362278] [2023-08-30 15:55:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:13,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:13,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576362278] [2023-08-30 15:55:13,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576362278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:13,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744136920] [2023-08-30 15:55:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:13,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:13,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:13,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:13,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:55:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:13,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:55:13,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:13,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:13,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744136920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:13,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:13,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:55:13,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934898834] [2023-08-30 15:55:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:13,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:55:13,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:55:13,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:55:13,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 15:55:13,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:13,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:13,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 15:55:13,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:14,901 INFO L130 PetriNetUnfolder]: 14518/20087 cut-off events. [2023-08-30 15:55:14,901 INFO L131 PetriNetUnfolder]: For 6684/6743 co-relation queries the response was YES. [2023-08-30 15:55:14,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51643 conditions, 20087 events. 14518/20087 cut-off events. For 6684/6743 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 119903 event pairs, 1252 based on Foata normal form. 59/14669 useless extension candidates. Maximal degree in co-relation 51622. Up to 8820 conditions per place. [2023-08-30 15:55:14,966 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 100 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2023-08-30 15:55:14,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 687 flow [2023-08-30 15:55:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:55:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:55:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-08-30 15:55:14,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-08-30 15:55:14,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-08-30 15:55:14,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-08-30 15:55:14,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:14,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-08-30 15:55:14,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:14,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:14,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:14,974 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 362 flow. Second operand 4 states and 908 transitions. [2023-08-30 15:55:14,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 687 flow [2023-08-30 15:55:15,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 106 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:15,001 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 362 flow [2023-08-30 15:55:15,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-30 15:55:15,002 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2023-08-30 15:55:15,002 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 362 flow [2023-08-30 15:55:15,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:15,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:15,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:15,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:15,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:15,204 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:15,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -561049378, now seen corresponding path program 1 times [2023-08-30 15:55:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:15,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731738139] [2023-08-30 15:55:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:15,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:15,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731738139] [2023-08-30 15:55:15,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731738139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195710054] [2023-08-30 15:55:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:15,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:15,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:15,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:15,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:55:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:15,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:55:15,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:15,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:15,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195710054] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:15,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:15,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 15:55:15,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643318226] [2023-08-30 15:55:15,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:15,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:55:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:15,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:55:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:55:15,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 15:55:15,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:15,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:15,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 15:55:15,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:17,381 INFO L130 PetriNetUnfolder]: 14265/19821 cut-off events. [2023-08-30 15:55:17,381 INFO L131 PetriNetUnfolder]: For 11139/12465 co-relation queries the response was YES. [2023-08-30 15:55:17,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50634 conditions, 19821 events. 14265/19821 cut-off events. For 11139/12465 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 120596 event pairs, 1963 based on Foata normal form. 1490/16177 useless extension candidates. Maximal degree in co-relation 50613. Up to 3631 conditions per place. [2023-08-30 15:55:17,452 INFO L137 encePairwiseOnDemand]: 461/474 looper letters, 229 selfloop transitions, 34 changer transitions 10/276 dead transitions. [2023-08-30 15:55:17,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 276 transitions, 1564 flow [2023-08-30 15:55:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 15:55:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 15:55:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3248 transitions. [2023-08-30 15:55:17,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282700421940928 [2023-08-30 15:55:17,460 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3248 transitions. [2023-08-30 15:55:17,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3248 transitions. [2023-08-30 15:55:17,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:17,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3248 transitions. [2023-08-30 15:55:17,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:17,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:17,477 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:17,477 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 362 flow. Second operand 16 states and 3248 transitions. [2023-08-30 15:55:17,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 276 transitions, 1564 flow [2023-08-30 15:55:17,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 276 transitions, 1550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:55:17,495 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 482 flow [2023-08-30 15:55:17,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=482, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-08-30 15:55:17,496 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-08-30 15:55:17,496 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 482 flow [2023-08-30 15:55:17,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:17,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:17,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:17,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:17,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 15:55:17,703 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:17,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1910925344, now seen corresponding path program 1 times [2023-08-30 15:55:17,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:17,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270052350] [2023-08-30 15:55:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:17,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:17,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:17,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270052350] [2023-08-30 15:55:17,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270052350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:17,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:17,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:17,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395286744] [2023-08-30 15:55:17,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:17,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:17,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:17,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:17,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 15:55:17,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:17,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:17,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 15:55:17,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:18,883 INFO L130 PetriNetUnfolder]: 11024/15628 cut-off events. [2023-08-30 15:55:18,889 INFO L131 PetriNetUnfolder]: For 13661/14965 co-relation queries the response was YES. [2023-08-30 15:55:18,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44299 conditions, 15628 events. 11024/15628 cut-off events. For 13661/14965 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 96577 event pairs, 1128 based on Foata normal form. 1304/14099 useless extension candidates. Maximal degree in co-relation 44274. Up to 13176 conditions per place. [2023-08-30 15:55:18,981 INFO L137 encePairwiseOnDemand]: 472/474 looper letters, 91 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-30 15:55:18,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 767 flow [2023-08-30 15:55:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 15:55:18,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732770745428973 [2023-08-30 15:55:18,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 15:55:18,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 15:55:18,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:18,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 15:55:18,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:18,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:18,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:18,987 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 482 flow. Second operand 3 states and 673 transitions. [2023-08-30 15:55:18,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 767 flow [2023-08-30 15:55:19,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 719 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 15:55:19,005 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 434 flow [2023-08-30 15:55:19,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-08-30 15:55:19,006 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2023-08-30 15:55:19,006 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 434 flow [2023-08-30 15:55:19,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:19,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:19,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:19,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 15:55:19,007 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:19,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1910925315, now seen corresponding path program 1 times [2023-08-30 15:55:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:19,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964563468] [2023-08-30 15:55:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:55:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964563468] [2023-08-30 15:55:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964563468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310975900] [2023-08-30 15:55:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:19,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:19,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:55:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:19,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:55:19,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:55:19,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:55:19,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310975900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:19,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:55:19,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:55:19,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070780102] [2023-08-30 15:55:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:19,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:55:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:55:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:55:19,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-08-30 15:55:19,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:19,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:19,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-08-30 15:55:19,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:20,344 INFO L130 PetriNetUnfolder]: 10882/15416 cut-off events. [2023-08-30 15:55:20,344 INFO L131 PetriNetUnfolder]: For 12471/13710 co-relation queries the response was YES. [2023-08-30 15:55:20,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44299 conditions, 15416 events. 10882/15416 cut-off events. For 12471/13710 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 91197 event pairs, 7904 based on Foata normal form. 1239/13922 useless extension candidates. Maximal degree in co-relation 44275. Up to 15266 conditions per place. [2023-08-30 15:55:20,406 INFO L137 encePairwiseOnDemand]: 464/474 looper letters, 48 selfloop transitions, 15 changer transitions 30/96 dead transitions. [2023-08-30 15:55:20,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 678 flow [2023-08-30 15:55:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:55:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:55:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1036 transitions. [2023-08-30 15:55:20,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371308016877637 [2023-08-30 15:55:20,409 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1036 transitions. [2023-08-30 15:55:20,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1036 transitions. [2023-08-30 15:55:20,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:20,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1036 transitions. [2023-08-30 15:55:20,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:20,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:20,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:20,414 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 434 flow. Second operand 5 states and 1036 transitions. [2023-08-30 15:55:20,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 678 flow [2023-08-30 15:55:20,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 96 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:20,430 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 399 flow [2023-08-30 15:55:20,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-08-30 15:55:20,430 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2023-08-30 15:55:20,430 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 399 flow [2023-08-30 15:55:20,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:20,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:20,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:20,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 15:55:20,636 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:20,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1963386740, now seen corresponding path program 1 times [2023-08-30 15:55:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:20,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657922037] [2023-08-30 15:55:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-30 15:55:20,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:20,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657922037] [2023-08-30 15:55:20,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657922037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:55:20,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:55:20,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:55:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350201700] [2023-08-30 15:55:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:55:20,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:55:20,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:55:20,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:55:20,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-08-30 15:55:20,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:20,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:20,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-08-30 15:55:20,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:21,597 INFO L130 PetriNetUnfolder]: 11919/16526 cut-off events. [2023-08-30 15:55:21,597 INFO L131 PetriNetUnfolder]: For 10492/11498 co-relation queries the response was YES. [2023-08-30 15:55:21,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48167 conditions, 16526 events. 11919/16526 cut-off events. For 10492/11498 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 98727 event pairs, 500 based on Foata normal form. 1450/15710 useless extension candidates. Maximal degree in co-relation 48140. Up to 15514 conditions per place. [2023-08-30 15:55:21,683 INFO L137 encePairwiseOnDemand]: 472/474 looper letters, 74 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 15:55:21,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 585 flow [2023-08-30 15:55:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:55:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:55:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-08-30 15:55:21,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47257383966244726 [2023-08-30 15:55:21,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-08-30 15:55:21,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-08-30 15:55:21,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:21,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-08-30 15:55:21,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:21,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:21,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:21,689 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 399 flow. Second operand 3 states and 672 transitions. [2023-08-30 15:55:21,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 585 flow [2023-08-30 15:55:21,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 507 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-30 15:55:21,723 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 317 flow [2023-08-30 15:55:21,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 15:55:21,724 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-08-30 15:55:21,724 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 317 flow [2023-08-30 15:55:21,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:21,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:21,724 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 15:55:21,725 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:21,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1441492826, now seen corresponding path program 1 times [2023-08-30 15:55:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:21,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439085080] [2023-08-30 15:55:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:55:21,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439085080] [2023-08-30 15:55:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439085080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272180835] [2023-08-30 15:55:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:21,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:21,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:21,794 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:21,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:55:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:21,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:55:21,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:21,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:55:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272180835] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:22,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:22,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 15:55:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11496746] [2023-08-30 15:55:22,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:55:22,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:55:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:55:22,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 15:55:22,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:22,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:22,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 15:55:22,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:23,651 INFO L130 PetriNetUnfolder]: 11921/16961 cut-off events. [2023-08-30 15:55:23,651 INFO L131 PetriNetUnfolder]: For 7330/8707 co-relation queries the response was YES. [2023-08-30 15:55:23,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45151 conditions, 16961 events. 11921/16961 cut-off events. For 7330/8707 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 103534 event pairs, 3067 based on Foata normal form. 1377/15342 useless extension candidates. Maximal degree in co-relation 45132. Up to 5719 conditions per place. [2023-08-30 15:55:23,706 INFO L137 encePairwiseOnDemand]: 461/474 looper letters, 98 selfloop transitions, 19 changer transitions 88/207 dead transitions. [2023-08-30 15:55:23,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 207 transitions, 1237 flow [2023-08-30 15:55:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:55:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:55:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2791 transitions. [2023-08-30 15:55:23,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205846895720313 [2023-08-30 15:55:23,710 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2791 transitions. [2023-08-30 15:55:23,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2791 transitions. [2023-08-30 15:55:23,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:23,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2791 transitions. [2023-08-30 15:55:23,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 199.35714285714286) internal successors, (2791), 14 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:23,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:23,720 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:23,720 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 317 flow. Second operand 14 states and 2791 transitions. [2023-08-30 15:55:23,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 207 transitions, 1237 flow [2023-08-30 15:55:23,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 207 transitions, 1235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:55:23,736 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 308 flow [2023-08-30 15:55:23,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=308, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2023-08-30 15:55:23,737 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2023-08-30 15:55:23,737 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 308 flow [2023-08-30 15:55:23,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:23,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:23,738 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:23,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:23,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:55:23,943 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:23,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1323946515, now seen corresponding path program 2 times [2023-08-30 15:55:23,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:23,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116423875] [2023-08-30 15:55:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:23,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 15:55:24,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116423875] [2023-08-30 15:55:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116423875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338526995] [2023-08-30 15:55:24,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:55:24,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:24,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:24,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:24,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:55:24,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:55:24,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:55:24,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:55:24,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:55:24,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:55:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338526995] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:24,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:24,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 15:55:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520200542] [2023-08-30 15:55:24,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:24,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 15:55:24,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 15:55:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 15:55:24,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 15:55:24,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 190.9) internal successors, (1909), 10 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:24,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:24,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 15:55:24,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:26,192 INFO L130 PetriNetUnfolder]: 19640/27213 cut-off events. [2023-08-30 15:55:26,192 INFO L131 PetriNetUnfolder]: For 18365/20603 co-relation queries the response was YES. [2023-08-30 15:55:26,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81670 conditions, 27213 events. 19640/27213 cut-off events. For 18365/20603 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 166471 event pairs, 4246 based on Foata normal form. 2238/26275 useless extension candidates. Maximal degree in co-relation 81648. Up to 7278 conditions per place. [2023-08-30 15:55:26,371 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 175 selfloop transitions, 36 changer transitions 27/240 dead transitions. [2023-08-30 15:55:26,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 240 transitions, 1559 flow [2023-08-30 15:55:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 15:55:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 15:55:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3189 transitions. [2023-08-30 15:55:26,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42049050632911394 [2023-08-30 15:55:26,378 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3189 transitions. [2023-08-30 15:55:26,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3189 transitions. [2023-08-30 15:55:26,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:26,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3189 transitions. [2023-08-30 15:55:26,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.3125) internal successors, (3189), 16 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:26,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:26,392 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:26,392 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 308 flow. Second operand 16 states and 3189 transitions. [2023-08-30 15:55:26,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 240 transitions, 1559 flow [2023-08-30 15:55:26,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 240 transitions, 1415 flow, removed 33 selfloop flow, removed 8 redundant places. [2023-08-30 15:55:26,488 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 442 flow [2023-08-30 15:55:26,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=442, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-08-30 15:55:26,489 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2023-08-30 15:55:26,489 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 442 flow [2023-08-30 15:55:26,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 190.9) internal successors, (1909), 10 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:26,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:55:26,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:26,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:26,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:26,695 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 15:55:26,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:55:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1421213311, now seen corresponding path program 2 times [2023-08-30 15:55:26,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:55:26,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192042708] [2023-08-30 15:55:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:55:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:55:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:55:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 15:55:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:55:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192042708] [2023-08-30 15:55:26,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192042708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:55:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340697150] [2023-08-30 15:55:26,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:55:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:26,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:55:26,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:55:26,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 15:55:26,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:55:26,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:55:26,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:55:26,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:55:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:55:27,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:55:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:55:27,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340697150] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:55:27,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:55:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 15:55:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420147073] [2023-08-30 15:55:27,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:55:27,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 15:55:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:55:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 15:55:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 15:55:27,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-08-30 15:55:27,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 191.7) internal successors, (1917), 10 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:27,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:55:27,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-08-30 15:55:27,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:55:28,511 INFO L130 PetriNetUnfolder]: 14886/20518 cut-off events. [2023-08-30 15:55:28,511 INFO L131 PetriNetUnfolder]: For 20345/22234 co-relation queries the response was YES. [2023-08-30 15:55:28,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59366 conditions, 20518 events. 14886/20518 cut-off events. For 20345/22234 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 118687 event pairs, 1815 based on Foata normal form. 1889/19693 useless extension candidates. Maximal degree in co-relation 59343. Up to 7884 conditions per place. [2023-08-30 15:55:28,591 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 0 selfloop transitions, 0 changer transitions 183/183 dead transitions. [2023-08-30 15:55:28,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 183 transitions, 1302 flow [2023-08-30 15:55:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:55:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:55:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2759 transitions. [2023-08-30 15:55:28,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41576250753465943 [2023-08-30 15:55:28,595 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2759 transitions. [2023-08-30 15:55:28,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2759 transitions. [2023-08-30 15:55:28,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:55:28,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2759 transitions. [2023-08-30 15:55:28,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 197.07142857142858) internal successors, (2759), 14 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,602 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,602 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 442 flow. Second operand 14 states and 2759 transitions. [2023-08-30 15:55:28,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 183 transitions, 1302 flow [2023-08-30 15:55:28,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 183 transitions, 1241 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-30 15:55:28,723 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2023-08-30 15:55:28,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2023-08-30 15:55:28,723 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-08-30 15:55:28,724 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2023-08-30 15:55:28,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.7) internal successors, (1917), 10 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:55:28,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-08-30 15:55:28,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 15:55:28,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 15:55:28,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 15:55:28,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-08-30 15:55:28,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-08-30 15:55:28,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-08-30 15:55:28,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 15:55:28,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 15:55:28,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 15:55:28,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 15:55:28,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 15:55:28,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 15:55:28,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 15:55:28,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 15:55:28,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 15:55:28,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:55:28,937 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:55:28,940 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:55:28,941 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:55:28,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:55:28 BasicIcfg [2023-08-30 15:55:28,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:55:28,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:55:28,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:55:28,945 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:55:28,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:54:50" (3/4) ... [2023-08-30 15:55:28,948 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:55:28,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:55:28,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:55:28,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:55:28,958 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-08-30 15:55:28,959 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:55:28,959 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:55:28,959 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:55:29,004 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:55:29,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:55:29,005 INFO L158 Benchmark]: Toolchain (without parser) took 38950.36ms. Allocated memory was 83.9MB in the beginning and 3.1GB in the end (delta: 3.1GB). Free memory was 61.9MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-08-30 15:55:29,005 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 43.0MB in the end (delta: 57.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:55:29,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.85ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 50.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 15:55:29,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.27ms. Allocated memory is still 83.9MB. Free memory was 49.9MB in the beginning and 48.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:55:29,006 INFO L158 Benchmark]: Boogie Preprocessor took 56.40ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 46.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:55:29,006 INFO L158 Benchmark]: RCFGBuilder took 607.78ms. Allocated memory is still 83.9MB. Free memory was 46.1MB in the beginning and 43.3MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 15:55:29,007 INFO L158 Benchmark]: TraceAbstraction took 37966.34ms. Allocated memory was 83.9MB in the beginning and 3.1GB in the end (delta: 3.1GB). Free memory was 42.5MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-08-30 15:55:29,007 INFO L158 Benchmark]: Witness Printer took 59.63ms. Allocated memory is still 3.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 15:55:29,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 43.0MB in the end (delta: 57.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.85ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 50.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.27ms. Allocated memory is still 83.9MB. Free memory was 49.9MB in the beginning and 48.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.40ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 46.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.78ms. Allocated memory is still 83.9MB. Free memory was 46.1MB in the beginning and 43.3MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 37966.34ms. Allocated memory was 83.9MB in the beginning and 3.1GB in the end (delta: 3.1GB). Free memory was 42.5MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 59.63ms. Allocated memory is still 3.1GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4s, 206 PlacesBefore, 46 PlacesAfterwards, 215 TransitionsBefore, 43 TransitionsAfterwards, 3058 CoEnabledTransitionPairs, 7 FixpointIterations, 132 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 238 TotalNumberOfCompositions, 5037 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3306, independent: 3203, independent conditional: 0, independent unconditional: 3203, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1641, independent: 1612, independent conditional: 0, independent unconditional: 1612, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3306, independent: 1591, independent conditional: 0, independent unconditional: 1591, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 1641, unknown conditional: 0, unknown unconditional: 1641] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 102, Positive conditional cache size: 0, Positive unconditional cache size: 102, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 268 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 37.8s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4922 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4097 mSDsluCounter, 1550 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1306 mSDsCounter, 405 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7169 IncrementalHoareTripleChecker+Invalid, 7574 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 405 mSolverCounterUnsat, 244 mSDtfsCounter, 7169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 170 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=482occurred in iteration=14, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 358 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 401 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2384 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 38 InterpolantComputations, 14 PerfectInterpolantSequences, 181/246 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:55:29,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE