./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-trans.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/array-eq-trans.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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --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 14:35:29,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:35:29,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:35:29,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:35:29,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:35:29,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:35:29,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:35:29,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:35:29,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:35:29,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:35:29,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:35:29,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:35:29,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:35:29,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:35:29,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:35:29,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:35:29,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:35:29,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:35:29,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:35:29,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:35:29,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:35:29,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:35:29,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:35:29,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:35:29,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:35:29,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:35:29,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:35:29,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:35:29,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:35:29,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:35:29,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:35:29,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:35:29,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:35:29,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:35:29,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:35:29,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:35:29,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:35:29,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:35:29,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:35:29,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:35:29,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:35:29,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:35:29,428 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:35:29,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:35:29,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:35:29,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:35:29,430 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:35:29,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:35:29,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:35:29,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:35:29,431 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:35:29,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:35:29,433 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:35:29,433 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:35:29,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:35:29,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:35:29,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:35:29,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:35:29,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:35:29,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:35:29,434 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:35:29,435 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:35:29,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:35:29,439 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:35:29,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:35:29,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:35:29,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:35:29,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:35:29,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:35:29,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:35:29,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:35:29,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:35:29,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:35:29,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:35:29,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:35:29,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:35:29,442 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:35:29,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:35:29,442 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:35:29,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:35:29,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:35:29,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:35:29,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:35:29,779 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:35:29,779 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:35:29,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-30 14:35:30,905 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:35:31,091 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:35:31,091 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-30 14:35:31,097 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ace6940/ef53e46549774892a1899be9161f18c8/FLAG453462e31 [2023-08-30 14:35:31,111 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ace6940/ef53e46549774892a1899be9161f18c8 [2023-08-30 14:35:31,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:35:31,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:35:31,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:35:31,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:35:31,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:35:31,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342b0ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31, skipping insertion in model container [2023-08-30 14:35:31,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:35:31,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:35:31,275 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/array-eq-trans.wvr.c[2737,2750] [2023-08-30 14:35:31,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:35:31,292 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:35:31,312 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/array-eq-trans.wvr.c[2737,2750] [2023-08-30 14:35:31,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:35:31,328 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:35:31,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31 WrapperNode [2023-08-30 14:35:31,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:35:31,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:35:31,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:35:31,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:35:31,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,365 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 216 [2023-08-30 14:35:31,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:35:31,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:35:31,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:35:31,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:35:31,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,393 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:35:31,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:35:31,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:35:31,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:35:31,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (1/1) ... [2023-08-30 14:35:31,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:35:31,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:31,438 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 14:35:31,465 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 14:35:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:35:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:35:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:35:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:35:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:35:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:35:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:35:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:35:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:35:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:35:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:35:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:35:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:35:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:35:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:35:31,484 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 14:35:31,639 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:35:31,641 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:35:32,120 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:35:32,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:35:32,136 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 14:35:32,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:32 BoogieIcfgContainer [2023-08-30 14:35:32,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:35:32,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:35:32,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:35:32,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:35:32,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:35:31" (1/3) ... [2023-08-30 14:35:32,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f17f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:35:32, skipping insertion in model container [2023-08-30 14:35:32,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:35:31" (2/3) ... [2023-08-30 14:35:32,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f17f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:35:32, skipping insertion in model container [2023-08-30 14:35:32,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:32" (3/3) ... [2023-08-30 14:35:32,163 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-08-30 14:35:32,171 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:35:32,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:35:32,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 14:35:32,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:35:32,252 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:35:32,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 310 transitions, 644 flow [2023-08-30 14:35:32,434 INFO L130 PetriNetUnfolder]: 30/307 cut-off events. [2023-08-30 14:35:32,435 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:35:32,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 307 events. 30/307 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 328 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 209. Up to 3 conditions per place. [2023-08-30 14:35:32,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 310 transitions, 644 flow [2023-08-30 14:35:32,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 235 transitions, 485 flow [2023-08-30 14:35:32,456 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:35:32,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 235 transitions, 485 flow [2023-08-30 14:35:32,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 235 transitions, 485 flow [2023-08-30 14:35:32,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 235 transitions, 485 flow [2023-08-30 14:35:32,524 INFO L130 PetriNetUnfolder]: 21/235 cut-off events. [2023-08-30 14:35:32,524 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:35:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 235 events. 21/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 270 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 209. Up to 3 conditions per place. [2023-08-30 14:35:32,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-30 14:35:39,877 INFO L134 LiptonReduction]: Checked pairs total: 5555 [2023-08-30 14:35:39,877 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-08-30 14:35:39,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:35:39,896 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;@1b756d06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:35:39,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:35:39,900 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:35:39,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:35:39,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:39,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:35:39,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:39,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash 35310, now seen corresponding path program 1 times [2023-08-30 14:35:39,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:39,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830219833] [2023-08-30 14:35:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:39,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:40,256 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 14:35:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830219833] [2023-08-30 14:35:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830219833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:40,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:40,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:40,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530250120] [2023-08-30 14:35:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:40,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:40,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:40,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 14:35:40,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 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 14:35:40,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:40,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 14:35:40,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:40,743 INFO L130 PetriNetUnfolder]: 1623/2253 cut-off events. [2023-08-30 14:35:40,744 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2023-08-30 14:35:40,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 2253 events. 1623/2253 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8622 event pairs, 1054 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 2004. Up to 1131 conditions per place. [2023-08-30 14:35:40,761 INFO L137 encePairwiseOnDemand]: 563/575 looper letters, 65 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-30 14:35:40,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 71 transitions, 314 flow [2023-08-30 14:35:40,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2023-08-30 14:35:40,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298550724637681 [2023-08-30 14:35:40,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2023-08-30 14:35:40,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2023-08-30 14:35:40,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:40,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2023-08-30 14:35:40,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 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 14:35:40,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:40,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:40,806 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 93 flow. Second operand 3 states and 914 transitions. [2023-08-30 14:35:40,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 71 transitions, 314 flow [2023-08-30 14:35:40,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 71 transitions, 296 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:35:40,815 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 140 flow [2023-08-30 14:35:40,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-08-30 14:35:40,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-30 14:35:40,820 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 140 flow [2023-08-30 14:35:40,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 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 14:35:40,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:40,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:35:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:35:40,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:40,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1096113, now seen corresponding path program 1 times [2023-08-30 14:35:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394396627] [2023-08-30 14:35:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:40,941 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 14:35:40,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:40,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394396627] [2023-08-30 14:35:40,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394396627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:40,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823188146] [2023-08-30 14:35:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:40,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:40,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:40,945 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 14:35:40,950 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 14:35:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:41,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:35:41,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:41,086 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 14:35:41,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:41,100 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 14:35:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823188146] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:41,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:35:41,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313200716] [2023-08-30 14:35:41,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:41,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:35:41,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:35:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:35:41,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 14:35:41,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 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 14:35:41,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:41,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 14:35:41,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:41,913 INFO L130 PetriNetUnfolder]: 4065/5631 cut-off events. [2023-08-30 14:35:41,913 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-30 14:35:41,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11599 conditions, 5631 events. 4065/5631 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 24519 event pairs, 2635 based on Foata normal form. 0/2486 useless extension candidates. Maximal degree in co-relation 9195. Up to 1129 conditions per place. [2023-08-30 14:35:41,944 INFO L137 encePairwiseOnDemand]: 563/575 looper letters, 143 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2023-08-30 14:35:41,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 176 transitions, 840 flow [2023-08-30 14:35:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:35:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:35:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2138 transitions. [2023-08-30 14:35:41,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311801242236025 [2023-08-30 14:35:41,950 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2138 transitions. [2023-08-30 14:35:41,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2138 transitions. [2023-08-30 14:35:41,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:41,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2138 transitions. [2023-08-30 14:35:41,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 305.42857142857144) internal successors, (2138), 7 states have internal predecessors, (2138), 0 states have call successors, (0), 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 14:35:41,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 575.0) internal successors, (4600), 8 states have internal predecessors, (4600), 0 states have call successors, (0), 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 14:35:41,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 575.0) internal successors, (4600), 8 states have internal predecessors, (4600), 0 states have call successors, (0), 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 14:35:41,965 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 140 flow. Second operand 7 states and 2138 transitions. [2023-08-30 14:35:41,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 176 transitions, 840 flow [2023-08-30 14:35:41,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 176 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:35:41,971 INFO L231 Difference]: Finished difference. Result has 47 places, 68 transitions, 347 flow [2023-08-30 14:35:41,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=47, PETRI_TRANSITIONS=68} [2023-08-30 14:35:41,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 14:35:41,973 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 68 transitions, 347 flow [2023-08-30 14:35:41,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 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 14:35:41,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:41,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 14:35:41,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:42,184 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 14:35:42,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:42,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash 33980558, now seen corresponding path program 1 times [2023-08-30 14:35:42,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:42,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996357481] [2023-08-30 14:35:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:42,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:42,261 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 14:35:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:42,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996357481] [2023-08-30 14:35:42,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996357481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:42,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:42,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:35:42,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060946682] [2023-08-30 14:35:42,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:42,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:42,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 14:35:42,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 68 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 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 14:35:42,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:42,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 14:35:42,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:42,758 INFO L130 PetriNetUnfolder]: 4056/5619 cut-off events. [2023-08-30 14:35:42,758 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 14:35:42,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11602 conditions, 5619 events. 4056/5619 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 25002 event pairs, 2635 based on Foata normal form. 2/2487 useless extension candidates. Maximal degree in co-relation 6933. Up to 5619 conditions per place. [2023-08-30 14:35:42,788 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:35:42,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 378 flow [2023-08-30 14:35:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-30 14:35:42,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078260869565218 [2023-08-30 14:35:42,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-30 14:35:42,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-30 14:35:42,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:42,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-30 14:35:42,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 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 14:35:42,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:42,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:42,798 INFO L175 Difference]: Start difference. First operand has 47 places, 68 transitions, 347 flow. Second operand 3 states and 876 transitions. [2023-08-30 14:35:42,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 378 flow [2023-08-30 14:35:42,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 348 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:42,801 INFO L231 Difference]: Finished difference. Result has 44 places, 56 transitions, 238 flow [2023-08-30 14:35:42,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=44, PETRI_TRANSITIONS=56} [2023-08-30 14:35:42,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-30 14:35:42,802 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 56 transitions, 238 flow [2023-08-30 14:35:42,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 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 14:35:42,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:42,803 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:35:42,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:35:42,803 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:42,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1704374468, now seen corresponding path program 2 times [2023-08-30 14:35:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:42,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155627127] [2023-08-30 14:35:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:42,881 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 14:35:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155627127] [2023-08-30 14:35:42,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155627127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:42,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279138404] [2023-08-30 14:35:42,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:35:42,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:42,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:42,883 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 14:35:42,898 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 14:35:42,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:35:42,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:35:42,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:35:42,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:43,003 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 14:35:43,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:35:43,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279138404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:43,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:35:43,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:35:43,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702106623] [2023-08-30 14:35:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:43,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:35:43,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 575 [2023-08-30 14:35:43,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 56 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 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 14:35:43,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:43,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 575 [2023-08-30 14:35:43,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:43,558 INFO L130 PetriNetUnfolder]: 4056/5618 cut-off events. [2023-08-30 14:35:43,559 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 14:35:43,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11580 conditions, 5618 events. 4056/5618 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 24992 event pairs, 2635 based on Foata normal form. 1/2487 useless extension candidates. Maximal degree in co-relation 11568. Up to 5613 conditions per place. [2023-08-30 14:35:43,586 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 49 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2023-08-30 14:35:43,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 338 flow [2023-08-30 14:35:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2023-08-30 14:35:43,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113043478260869 [2023-08-30 14:35:43,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2023-08-30 14:35:43,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2023-08-30 14:35:43,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:43,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2023-08-30 14:35:43,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 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 14:35:43,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:43,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:43,596 INFO L175 Difference]: Start difference. First operand has 44 places, 56 transitions, 238 flow. Second operand 3 states and 882 transitions. [2023-08-30 14:35:43,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 338 flow [2023-08-30 14:35:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:43,599 INFO L231 Difference]: Finished difference. Result has 44 places, 55 transitions, 239 flow [2023-08-30 14:35:43,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=44, PETRI_TRANSITIONS=55} [2023-08-30 14:35:43,601 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-30 14:35:43,601 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 55 transitions, 239 flow [2023-08-30 14:35:43,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.0) internal successors, (849), 3 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 14:35:43,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:43,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:43,610 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 14:35:43,808 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 14:35:43,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:43,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash -268262969, now seen corresponding path program 1 times [2023-08-30 14:35:43,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637329358] [2023-08-30 14:35:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:43,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:43,881 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 14:35:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:43,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637329358] [2023-08-30 14:35:43,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637329358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:43,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:43,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:43,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773405182] [2023-08-30 14:35:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:43,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:43,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:43,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 14:35:43,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 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 14:35:43,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:43,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 14:35:43,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:44,554 INFO L130 PetriNetUnfolder]: 6776/9358 cut-off events. [2023-08-30 14:35:44,554 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 14:35:44,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19231 conditions, 9358 events. 6776/9358 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 47289 event pairs, 1615 based on Foata normal form. 0/4317 useless extension candidates. Maximal degree in co-relation 19218. Up to 5841 conditions per place. [2023-08-30 14:35:44,603 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 76 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 14:35:44,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 446 flow [2023-08-30 14:35:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 918 transitions. [2023-08-30 14:35:44,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321739130434783 [2023-08-30 14:35:44,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 918 transitions. [2023-08-30 14:35:44,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 918 transitions. [2023-08-30 14:35:44,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:44,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 918 transitions. [2023-08-30 14:35:44,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 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 14:35:44,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:44,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:44,613 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 239 flow. Second operand 3 states and 918 transitions. [2023-08-30 14:35:44,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 446 flow [2023-08-30 14:35:44,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:35:44,616 INFO L231 Difference]: Finished difference. Result has 45 places, 56 transitions, 241 flow [2023-08-30 14:35:44,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=56} [2023-08-30 14:35:44,616 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-30 14:35:44,617 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 56 transitions, 241 flow [2023-08-30 14:35:44,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 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 14:35:44,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:44,617 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 14:35:44,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:35:44,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:44,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash -264396176, now seen corresponding path program 1 times [2023-08-30 14:35:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:44,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127340418] [2023-08-30 14:35:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:44,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:44,701 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 14:35:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:44,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127340418] [2023-08-30 14:35:44,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127340418] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:35:44,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57397583] [2023-08-30 14:35:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:44,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:44,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:35:44,703 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 14:35:44,736 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 14:35:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:44,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 14:35:44,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:35:44,832 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 14:35:44,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:35:44,887 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 14:35:44,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57397583] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:35:44,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:35:44,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:35:44,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229456669] [2023-08-30 14:35:44,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:35:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:35:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:44,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:35:44,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:35:45,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 14:35:45,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 56 transitions, 241 flow. Second operand has 13 states, 13 states have (on average 280.15384615384613) internal successors, (3642), 13 states have internal predecessors, (3642), 0 states have call successors, (0), 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 14:35:45,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:45,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 14:35:45,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:46,984 INFO L130 PetriNetUnfolder]: 14906/20584 cut-off events. [2023-08-30 14:35:46,985 INFO L131 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2023-08-30 14:35:47,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45121 conditions, 20584 events. 14906/20584 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 103648 event pairs, 9911 based on Foata normal form. 12/10638 useless extension candidates. Maximal degree in co-relation 45107. Up to 2289 conditions per place. [2023-08-30 14:35:47,095 INFO L137 encePairwiseOnDemand]: 567/575 looper letters, 315 selfloop transitions, 51 changer transitions 0/366 dead transitions. [2023-08-30 14:35:47,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 366 transitions, 1851 flow [2023-08-30 14:35:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:35:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:35:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3715 transitions. [2023-08-30 14:35:47,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384057971014493 [2023-08-30 14:35:47,105 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3715 transitions. [2023-08-30 14:35:47,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3715 transitions. [2023-08-30 14:35:47,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:47,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3715 transitions. [2023-08-30 14:35:47,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 309.5833333333333) internal successors, (3715), 12 states have internal predecessors, (3715), 0 states have call successors, (0), 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 14:35:47,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 575.0) internal successors, (7475), 13 states have internal predecessors, (7475), 0 states have call successors, (0), 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 14:35:47,125 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 575.0) internal successors, (7475), 13 states have internal predecessors, (7475), 0 states have call successors, (0), 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 14:35:47,125 INFO L175 Difference]: Start difference. First operand has 45 places, 56 transitions, 241 flow. Second operand 12 states and 3715 transitions. [2023-08-30 14:35:47,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 366 transitions, 1851 flow [2023-08-30 14:35:47,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 366 transitions, 1839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:47,134 INFO L231 Difference]: Finished difference. Result has 61 places, 86 transitions, 587 flow [2023-08-30 14:35:47,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=61, PETRI_TRANSITIONS=86} [2023-08-30 14:35:47,137 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2023-08-30 14:35:47,138 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 86 transitions, 587 flow [2023-08-30 14:35:47,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 280.15384615384613) internal successors, (3642), 13 states have internal predecessors, (3642), 0 states have call successors, (0), 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 14:35:47,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:47,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:47,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:35:47,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:35:47,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:47,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:47,348 INFO L85 PathProgramCache]: Analyzing trace with hash -102605411, now seen corresponding path program 1 times [2023-08-30 14:35:47,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:47,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45814847] [2023-08-30 14:35:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:47,394 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 14:35:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:47,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45814847] [2023-08-30 14:35:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45814847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:47,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:35:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016898528] [2023-08-30 14:35:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:47,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:47,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 14:35:47,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 86 transitions, 587 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 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 14:35:47,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:47,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 14:35:47,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:48,820 INFO L130 PetriNetUnfolder]: 13454/18560 cut-off events. [2023-08-30 14:35:48,820 INFO L131 PetriNetUnfolder]: For 1502/1502 co-relation queries the response was YES. [2023-08-30 14:35:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39910 conditions, 18560 events. 13454/18560 cut-off events. For 1502/1502 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 93455 event pairs, 8789 based on Foata normal form. 0/9954 useless extension candidates. Maximal degree in co-relation 39889. Up to 18560 conditions per place. [2023-08-30 14:35:48,929 INFO L137 encePairwiseOnDemand]: 573/575 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-30 14:35:48,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 753 flow [2023-08-30 14:35:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 893 transitions. [2023-08-30 14:35:48,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176811594202898 [2023-08-30 14:35:48,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 893 transitions. [2023-08-30 14:35:48,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 893 transitions. [2023-08-30 14:35:48,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:48,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 893 transitions. [2023-08-30 14:35:48,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 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 14:35:48,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:48,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:48,939 INFO L175 Difference]: Start difference. First operand has 61 places, 86 transitions, 587 flow. Second operand 3 states and 893 transitions. [2023-08-30 14:35:48,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 753 flow [2023-08-30 14:35:48,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 609 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 14:35:48,947 INFO L231 Difference]: Finished difference. Result has 57 places, 85 transitions, 441 flow [2023-08-30 14:35:48,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=57, PETRI_TRANSITIONS=85} [2023-08-30 14:35:48,947 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-30 14:35:48,948 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 85 transitions, 441 flow [2023-08-30 14:35:48,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 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 14:35:48,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:48,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:48,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:35:48,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:48,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash -102605369, now seen corresponding path program 1 times [2023-08-30 14:35:48,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:48,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077013712] [2023-08-30 14:35:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:48,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:49,060 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 14:35:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077013712] [2023-08-30 14:35:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077013712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:49,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:49,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:35:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981041731] [2023-08-30 14:35:49,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:49,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:35:49,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:49,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:35:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:35:49,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 575 [2023-08-30 14:35:49,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 85 transitions, 441 flow. Second operand has 4 states, 4 states have (on average 274.25) internal successors, (1097), 4 states have internal predecessors, (1097), 0 states have call successors, (0), 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 14:35:49,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:49,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 575 [2023-08-30 14:35:49,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:50,682 INFO L130 PetriNetUnfolder]: 16116/22577 cut-off events. [2023-08-30 14:35:50,682 INFO L131 PetriNetUnfolder]: For 1695/1695 co-relation queries the response was YES. [2023-08-30 14:35:50,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48210 conditions, 22577 events. 16116/22577 cut-off events. For 1695/1695 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 120886 event pairs, 10604 based on Foata normal form. 0/12300 useless extension candidates. Maximal degree in co-relation 48189. Up to 18559 conditions per place. [2023-08-30 14:35:50,779 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 138 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2023-08-30 14:35:50,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 141 transitions, 1008 flow [2023-08-30 14:35:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:35:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:35:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-08-30 14:35:50,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008695652173913 [2023-08-30 14:35:50,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-08-30 14:35:50,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-08-30 14:35:50,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:50,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-08-30 14:35:50,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 14:35:50,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:35:50,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:35:50,811 INFO L175 Difference]: Start difference. First operand has 57 places, 85 transitions, 441 flow. Second operand 4 states and 1152 transitions. [2023-08-30 14:35:50,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 141 transitions, 1008 flow [2023-08-30 14:35:50,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 141 transitions, 1007 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:50,821 INFO L231 Difference]: Finished difference. Result has 60 places, 85 transitions, 451 flow [2023-08-30 14:35:50,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=451, PETRI_PLACES=60, PETRI_TRANSITIONS=85} [2023-08-30 14:35:50,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2023-08-30 14:35:50,824 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 85 transitions, 451 flow [2023-08-30 14:35:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 274.25) internal successors, (1097), 4 states have internal predecessors, (1097), 0 states have call successors, (0), 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 14:35:50,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:50,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:50,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:35:50,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:50,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash -98991969, now seen corresponding path program 1 times [2023-08-30 14:35:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844347347] [2023-08-30 14:35:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:50,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:50,877 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 14:35:50,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:50,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844347347] [2023-08-30 14:35:50,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844347347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855905807] [2023-08-30 14:35:50,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:50,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:50,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 14:35:50,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 85 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 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 14:35:50,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:50,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 14:35:50,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:53,128 INFO L130 PetriNetUnfolder]: 27380/37647 cut-off events. [2023-08-30 14:35:53,128 INFO L131 PetriNetUnfolder]: For 5721/5721 co-relation queries the response was YES. [2023-08-30 14:35:53,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83414 conditions, 37647 events. 27380/37647 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 213624 event pairs, 8316 based on Foata normal form. 0/23938 useless extension candidates. Maximal degree in co-relation 83391. Up to 19141 conditions per place. [2023-08-30 14:35:53,374 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 104 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-30 14:35:53,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 107 transitions, 723 flow [2023-08-30 14:35:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2023-08-30 14:35:53,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298550724637681 [2023-08-30 14:35:53,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2023-08-30 14:35:53,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2023-08-30 14:35:53,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:53,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2023-08-30 14:35:53,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 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 14:35:53,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:53,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:53,385 INFO L175 Difference]: Start difference. First operand has 60 places, 85 transitions, 451 flow. Second operand 3 states and 914 transitions. [2023-08-30 14:35:53,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 107 transitions, 723 flow [2023-08-30 14:35:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 107 transitions, 717 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:53,391 INFO L231 Difference]: Finished difference. Result has 63 places, 87 transitions, 467 flow [2023-08-30 14:35:53,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=63, PETRI_TRANSITIONS=87} [2023-08-30 14:35:53,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2023-08-30 14:35:53,392 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 87 transitions, 467 flow [2023-08-30 14:35:53,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 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 14:35:53,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:53,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:53,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:35:53,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:53,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash -98991971, now seen corresponding path program 1 times [2023-08-30 14:35:53,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:53,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711386257] [2023-08-30 14:35:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:53,447 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 14:35:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711386257] [2023-08-30 14:35:53,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711386257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:53,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:53,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305520781] [2023-08-30 14:35:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:53,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:53,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:53,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 14:35:53,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 87 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 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 14:35:53,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:53,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 14:35:53,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:55,580 INFO L130 PetriNetUnfolder]: 23310/32389 cut-off events. [2023-08-30 14:35:55,580 INFO L131 PetriNetUnfolder]: For 13324/13324 co-relation queries the response was YES. [2023-08-30 14:35:55,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76704 conditions, 32389 events. 23310/32389 cut-off events. For 13324/13324 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 179224 event pairs, 15356 based on Foata normal form. 2376/26446 useless extension candidates. Maximal degree in co-relation 76678. Up to 32389 conditions per place. [2023-08-30 14:35:55,777 INFO L137 encePairwiseOnDemand]: 573/575 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-30 14:35:55,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 627 flow [2023-08-30 14:35:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-08-30 14:35:55,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171014492753623 [2023-08-30 14:35:55,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-08-30 14:35:55,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-08-30 14:35:55,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:55,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-08-30 14:35:55,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 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 14:35:55,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:55,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:55,785 INFO L175 Difference]: Start difference. First operand has 63 places, 87 transitions, 467 flow. Second operand 3 states and 892 transitions. [2023-08-30 14:35:55,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 627 flow [2023-08-30 14:35:55,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:35:55,794 INFO L231 Difference]: Finished difference. Result has 62 places, 85 transitions, 455 flow [2023-08-30 14:35:55,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=62, PETRI_TRANSITIONS=85} [2023-08-30 14:35:55,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-08-30 14:35:55,795 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 85 transitions, 455 flow [2023-08-30 14:35:55,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 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 14:35:55,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:55,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:55,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:35:55,796 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:55,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:55,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1226329833, now seen corresponding path program 1 times [2023-08-30 14:35:55,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:55,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763041572] [2023-08-30 14:35:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:55,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:55,849 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 14:35:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763041572] [2023-08-30 14:35:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763041572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:55,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:55,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:35:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018008488] [2023-08-30 14:35:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:55,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:35:55,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:55,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:35:55,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:35:55,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 14:35:55,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 85 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 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 14:35:55,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:55,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 14:35:55,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:35:58,889 INFO L130 PetriNetUnfolder]: 33716/46755 cut-off events. [2023-08-30 14:35:58,889 INFO L131 PetriNetUnfolder]: For 9650/9650 co-relation queries the response was YES. [2023-08-30 14:35:59,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107372 conditions, 46755 events. 33716/46755 cut-off events. For 9650/9650 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 274876 event pairs, 8360 based on Foata normal form. 1474/36038 useless extension candidates. Maximal degree in co-relation 107346. Up to 29107 conditions per place. [2023-08-30 14:35:59,175 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 102 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-30 14:35:59,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 717 flow [2023-08-30 14:35:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:35:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:35:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-08-30 14:35:59,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527536231884058 [2023-08-30 14:35:59,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-08-30 14:35:59,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-08-30 14:35:59,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:35:59,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-08-30 14:35:59,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 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 14:35:59,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:59,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 575.0) internal successors, (2300), 4 states have internal predecessors, (2300), 0 states have call successors, (0), 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 14:35:59,183 INFO L175 Difference]: Start difference. First operand has 62 places, 85 transitions, 455 flow. Second operand 3 states and 910 transitions. [2023-08-30 14:35:59,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 717 flow [2023-08-30 14:35:59,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:35:59,191 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 468 flow [2023-08-30 14:35:59,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2023-08-30 14:35:59,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-30 14:35:59,192 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 468 flow [2023-08-30 14:35:59,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.3333333333333) internal successors, (868), 3 states have internal predecessors, (868), 0 states have call successors, (0), 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 14:35:59,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:35:59,192 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:35:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:35:59,193 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:35:59,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:35:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1857812366, now seen corresponding path program 1 times [2023-08-30 14:35:59,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:35:59,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102031402] [2023-08-30 14:35:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:35:59,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:35:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:35:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:35:59,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:35:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102031402] [2023-08-30 14:35:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102031402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:35:59,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:35:59,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:35:59,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283686254] [2023-08-30 14:35:59,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:35:59,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:35:59,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:35:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:35:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:35:59,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 14:35:59,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 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 14:35:59,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:35:59,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 14:35:59,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:36:04,001 INFO L130 PetriNetUnfolder]: 46982/66337 cut-off events. [2023-08-30 14:36:04,002 INFO L131 PetriNetUnfolder]: For 17202/17202 co-relation queries the response was YES. [2023-08-30 14:36:04,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164180 conditions, 66337 events. 46982/66337 cut-off events. For 17202/17202 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 424231 event pairs, 21956 based on Foata normal form. 1100/55752 useless extension candidates. Maximal degree in co-relation 164152. Up to 24786 conditions per place. [2023-08-30 14:36:04,445 INFO L137 encePairwiseOnDemand]: 568/575 looper letters, 151 selfloop transitions, 16 changer transitions 0/167 dead transitions. [2023-08-30 14:36:04,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 167 transitions, 1097 flow [2023-08-30 14:36:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:36:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:36:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1730 transitions. [2023-08-30 14:36:04,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014492753623189 [2023-08-30 14:36:04,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1730 transitions. [2023-08-30 14:36:04,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1730 transitions. [2023-08-30 14:36:04,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:36:04,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1730 transitions. [2023-08-30 14:36:04,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.3333333333333) internal successors, (1730), 6 states have internal predecessors, (1730), 0 states have call successors, (0), 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 14:36:04,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:36:04,459 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:36:04,459 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 468 flow. Second operand 6 states and 1730 transitions. [2023-08-30 14:36:04,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 167 transitions, 1097 flow [2023-08-30 14:36:04,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 167 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:36:04,466 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 513 flow [2023-08-30 14:36:04,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=513, PETRI_PLACES=70, PETRI_TRANSITIONS=87} [2023-08-30 14:36:04,467 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2023-08-30 14:36:04,467 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 513 flow [2023-08-30 14:36:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 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 14:36:04,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:36:04,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:36:04,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:36:04,468 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:36:04,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:36:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash -641973861, now seen corresponding path program 1 times [2023-08-30 14:36:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:36:04,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088334865] [2023-08-30 14:36:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:36:04,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:36:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:36:04,566 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 14:36:04,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:36:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088334865] [2023-08-30 14:36:04,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088334865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:36:04,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:36:04,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:36:04,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839299595] [2023-08-30 14:36:04,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:36:04,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:36:04,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:36:04,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:36:04,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:36:04,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 14:36:04,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 87 transitions, 513 flow. Second operand has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 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 14:36:04,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:36:04,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 14:36:04,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:36:08,404 INFO L130 PetriNetUnfolder]: 36378/51421 cut-off events. [2023-08-30 14:36:08,405 INFO L131 PetriNetUnfolder]: For 25619/25619 co-relation queries the response was YES. [2023-08-30 14:36:08,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131182 conditions, 51421 events. 36378/51421 cut-off events. For 25619/25619 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 314436 event pairs, 25608 based on Foata normal form. 0/42883 useless extension candidates. Maximal degree in co-relation 131151. Up to 46742 conditions per place. [2023-08-30 14:36:08,724 INFO L137 encePairwiseOnDemand]: 569/575 looper letters, 117 selfloop transitions, 15 changer transitions 2/134 dead transitions. [2023-08-30 14:36:08,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 134 transitions, 966 flow [2023-08-30 14:36:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:36:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:36:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-08-30 14:36:08,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2023-08-30 14:36:08,730 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-08-30 14:36:08,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-08-30 14:36:08,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:36:08,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-08-30 14:36:08,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 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 14:36:08,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:36:08,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:36:08,739 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 513 flow. Second operand 6 states and 1700 transitions. [2023-08-30 14:36:08,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 134 transitions, 966 flow [2023-08-30 14:36:08,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 134 transitions, 958 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 14:36:08,751 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 542 flow [2023-08-30 14:36:08,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=542, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2023-08-30 14:36:08,752 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2023-08-30 14:36:08,752 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 542 flow [2023-08-30 14:36:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 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 14:36:08,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:36:08,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:36:08,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:36:08,753 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:36:08,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:36:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1947325234, now seen corresponding path program 1 times [2023-08-30 14:36:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:36:08,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520756231] [2023-08-30 14:36:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:36:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:36:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:36:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:36:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:36:08,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520756231] [2023-08-30 14:36:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520756231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:36:08,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044701626] [2023-08-30 14:36:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:36:08,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:36:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:36:08,857 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 14:36:08,860 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 14:36:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:36:08,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:36:08,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:36:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:36:09,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:36:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:36:09,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044701626] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:36:09,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:36:09,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-30 14:36:09,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700660783] [2023-08-30 14:36:09,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:36:09,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 14:36:09,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:36:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 14:36:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 14:36:09,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 575 [2023-08-30 14:36:09,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 542 flow. Second operand has 15 states, 15 states have (on average 264.93333333333334) internal successors, (3974), 15 states have internal predecessors, (3974), 0 states have call successors, (0), 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 14:36:09,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:36:09,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 575 [2023-08-30 14:36:09,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:36:20,791 INFO L130 PetriNetUnfolder]: 98528/139790 cut-off events. [2023-08-30 14:36:20,791 INFO L131 PetriNetUnfolder]: For 103682/103682 co-relation queries the response was YES. [2023-08-30 14:36:21,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368791 conditions, 139790 events. 98528/139790 cut-off events. For 103682/103682 co-relation queries the response was YES. Maximal size of possible extension queue 3486. Compared 986911 event pairs, 52371 based on Foata normal form. 4774/131999 useless extension candidates. Maximal degree in co-relation 368758. Up to 37726 conditions per place. [2023-08-30 14:36:21,800 INFO L137 encePairwiseOnDemand]: 564/575 looper letters, 517 selfloop transitions, 41 changer transitions 9/567 dead transitions. [2023-08-30 14:36:21,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 567 transitions, 3715 flow [2023-08-30 14:36:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 14:36:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 14:36:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 8552 transitions. [2023-08-30 14:36:21,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797755960729313 [2023-08-30 14:36:21,817 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 8552 transitions. [2023-08-30 14:36:21,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 8552 transitions. [2023-08-30 14:36:21,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:36:21,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 8552 transitions. [2023-08-30 14:36:21,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 275.8709677419355) internal successors, (8552), 31 states have internal predecessors, (8552), 0 states have call successors, (0), 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 14:36:21,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 575.0) internal successors, (18400), 32 states have internal predecessors, (18400), 0 states have call successors, (0), 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 14:36:21,862 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 575.0) internal successors, (18400), 32 states have internal predecessors, (18400), 0 states have call successors, (0), 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 14:36:21,862 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 542 flow. Second operand 31 states and 8552 transitions. [2023-08-30 14:36:21,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 567 transitions, 3715 flow [2023-08-30 14:36:21,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 567 transitions, 3676 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:36:21,927 INFO L231 Difference]: Finished difference. Result has 113 places, 108 transitions, 873 flow [2023-08-30 14:36:21,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=873, PETRI_PLACES=113, PETRI_TRANSITIONS=108} [2023-08-30 14:36:21,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2023-08-30 14:36:21,928 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 108 transitions, 873 flow [2023-08-30 14:36:21,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 264.93333333333334) internal successors, (3974), 15 states have internal predecessors, (3974), 0 states have call successors, (0), 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 14:36:21,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:36:21,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:36:21,935 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 14:36:22,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:36:22,135 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:36:22,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:36:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash -638479733, now seen corresponding path program 1 times [2023-08-30 14:36:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:36:22,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294974100] [2023-08-30 14:36:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:36:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:36:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:36:22,267 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 14:36:22,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:36:22,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294974100] [2023-08-30 14:36:22,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294974100] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:36:22,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695039059] [2023-08-30 14:36:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:36:22,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:36:22,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:36:22,269 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 14:36:22,273 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 14:36:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:36:22,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:36:22,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:36:22,427 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 14:36:22,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:36:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695039059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:36:22,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:36:22,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 14:36:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771886557] [2023-08-30 14:36:22,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:36:22,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:36:22,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:36:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:36:22,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:36:22,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 575 [2023-08-30 14:36:22,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 108 transitions, 873 flow. Second operand has 4 states, 4 states have (on average 274.75) internal successors, (1099), 4 states have internal predecessors, (1099), 0 states have call successors, (0), 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 14:36:22,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:36:22,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 575 [2023-08-30 14:36:22,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:36:33,470 INFO L130 PetriNetUnfolder]: 90102/127866 cut-off events. [2023-08-30 14:36:33,470 INFO L131 PetriNetUnfolder]: For 252637/252637 co-relation queries the response was YES. [2023-08-30 14:36:34,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379350 conditions, 127866 events. 90102/127866 cut-off events. For 252637/252637 co-relation queries the response was YES. Maximal size of possible extension queue 3232. Compared 887417 event pairs, 64625 based on Foata normal form. 1166/118029 useless extension candidates. Maximal degree in co-relation 379305. Up to 119644 conditions per place. [2023-08-30 14:36:34,618 INFO L137 encePairwiseOnDemand]: 568/575 looper letters, 152 selfloop transitions, 16 changer transitions 8/176 dead transitions. [2023-08-30 14:36:34,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 176 transitions, 1540 flow [2023-08-30 14:36:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:36:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:36:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1441 transitions. [2023-08-30 14:36:34,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012173913043478 [2023-08-30 14:36:34,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1441 transitions. [2023-08-30 14:36:34,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1441 transitions. [2023-08-30 14:36:34,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:36:34,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1441 transitions. [2023-08-30 14:36:34,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 288.2) internal successors, (1441), 5 states have internal predecessors, (1441), 0 states have call successors, (0), 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 14:36:34,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 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 14:36:34,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 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 14:36:34,626 INFO L175 Difference]: Start difference. First operand has 113 places, 108 transitions, 873 flow. Second operand 5 states and 1441 transitions. [2023-08-30 14:36:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 176 transitions, 1540 flow [2023-08-30 14:36:35,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 176 transitions, 1505 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 14:36:35,949 INFO L231 Difference]: Finished difference. Result has 115 places, 118 transitions, 982 flow [2023-08-30 14:36:35,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=115, PETRI_TRANSITIONS=118} [2023-08-30 14:36:35,949 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2023-08-30 14:36:35,950 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 118 transitions, 982 flow [2023-08-30 14:36:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 274.75) internal successors, (1099), 4 states have internal predecessors, (1099), 0 states have call successors, (0), 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 14:36:35,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:36:35,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:36:35,961 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 14:36:36,155 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,SelfDestructingSolverStorable14 [2023-08-30 14:36:36,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:36:36,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:36:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 529743478, now seen corresponding path program 1 times [2023-08-30 14:36:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:36:36,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833901602] [2023-08-30 14:36:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:36:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:36:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:36:36,279 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 14:36:36,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:36:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833901602] [2023-08-30 14:36:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833901602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:36:36,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:36:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:36:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030411111] [2023-08-30 14:36:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:36:36,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:36:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:36:36,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:36:36,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:36:36,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 14:36:36,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 118 transitions, 982 flow. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 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 14:36:36,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:36:36,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 14:36:36,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:36:46,799 INFO L130 PetriNetUnfolder]: 85120/121098 cut-off events. [2023-08-30 14:36:46,799 INFO L131 PetriNetUnfolder]: For 236041/236041 co-relation queries the response was YES. [2023-08-30 14:36:47,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367920 conditions, 121098 events. 85120/121098 cut-off events. For 236041/236041 co-relation queries the response was YES. Maximal size of possible extension queue 3143. Compared 857695 event pairs, 25883 based on Foata normal form. 480/111338 useless extension candidates. Maximal degree in co-relation 367873. Up to 67681 conditions per place. [2023-08-30 14:36:48,193 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 132 selfloop transitions, 32 changer transitions 2/166 dead transitions. [2023-08-30 14:36:48,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 166 transitions, 1512 flow [2023-08-30 14:36:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:36:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:36:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1429 transitions. [2023-08-30 14:36:48,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970434782608696 [2023-08-30 14:36:48,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1429 transitions. [2023-08-30 14:36:48,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1429 transitions. [2023-08-30 14:36:48,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:36:48,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1429 transitions. [2023-08-30 14:36:48,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.8) internal successors, (1429), 5 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 14:36:48,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 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 14:36:48,203 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 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 14:36:48,203 INFO L175 Difference]: Start difference. First operand has 115 places, 118 transitions, 982 flow. Second operand 5 states and 1429 transitions. [2023-08-30 14:36:48,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 166 transitions, 1512 flow [2023-08-30 14:36:53,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 166 transitions, 1503 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 14:36:53,379 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 1071 flow [2023-08-30 14:36:53,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1071, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2023-08-30 14:36:53,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2023-08-30 14:36:53,380 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 1071 flow [2023-08-30 14:36:53,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 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 14:36:53,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:36:53,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:36:53,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:36:53,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:36:53,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:36:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1451452051, now seen corresponding path program 1 times [2023-08-30 14:36:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:36:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580601694] [2023-08-30 14:36:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:36:53,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:36:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:36:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:36:53,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:36:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580601694] [2023-08-30 14:36:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580601694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:36:53,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:36:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:36:53,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688653343] [2023-08-30 14:36:53,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:36:53,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:36:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:36:53,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:36:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:36:53,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 575 [2023-08-30 14:36:53,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 1071 flow. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 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 14:36:53,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:36:53,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 575 [2023-08-30 14:36:53,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:37:03,947 INFO L130 PetriNetUnfolder]: 82652/117610 cut-off events. [2023-08-30 14:37:03,947 INFO L131 PetriNetUnfolder]: For 249567/249567 co-relation queries the response was YES. [2023-08-30 14:37:04,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359549 conditions, 117610 events. 82652/117610 cut-off events. For 249567/249567 co-relation queries the response was YES. Maximal size of possible extension queue 3123. Compared 818074 event pairs, 59403 based on Foata normal form. 196/107792 useless extension candidates. Maximal degree in co-relation 359502. Up to 116227 conditions per place. [2023-08-30 14:37:05,083 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 100 selfloop transitions, 31 changer transitions 9/140 dead transitions. [2023-08-30 14:37:05,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 140 transitions, 1436 flow [2023-08-30 14:37:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:37:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:37:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1408 transitions. [2023-08-30 14:37:05,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897391304347826 [2023-08-30 14:37:05,085 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1408 transitions. [2023-08-30 14:37:05,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1408 transitions. [2023-08-30 14:37:05,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:37:05,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1408 transitions. [2023-08-30 14:37:05,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.6) internal successors, (1408), 5 states have internal predecessors, (1408), 0 states have call successors, (0), 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 14:37:05,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 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 14:37:05,090 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 575.0) internal successors, (3450), 6 states have internal predecessors, (3450), 0 states have call successors, (0), 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 14:37:05,090 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 1071 flow. Second operand 5 states and 1408 transitions. [2023-08-30 14:37:05,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 140 transitions, 1436 flow [2023-08-30 14:37:06,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 140 transitions, 1381 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 14:37:06,068 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 1081 flow [2023-08-30 14:37:06,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1081, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2023-08-30 14:37:06,069 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2023-08-30 14:37:06,069 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 1081 flow [2023-08-30 14:37:06,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 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 14:37:06,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:37:06,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:37:06,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:37:06,070 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:37:06,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:37:06,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1427924327, now seen corresponding path program 2 times [2023-08-30 14:37:06,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:37:06,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247370635] [2023-08-30 14:37:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:37:06,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:37:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:37:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:37:06,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:37:06,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247370635] [2023-08-30 14:37:06,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247370635] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:37:06,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962486210] [2023-08-30 14:37:06,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:37:06,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:37:06,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:37:06,133 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 14:37:06,164 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 14:37:06,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:37:06,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:37:06,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:37:06,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:37:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:37:06,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:37:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:37:06,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962486210] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:37:06,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:37:06,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 14:37:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339674609] [2023-08-30 14:37:06,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:37:06,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:37:06,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:37:06,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:37:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:37:06,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 575 [2023-08-30 14:37:06,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 1081 flow. Second operand has 6 states, 6 states have (on average 286.6666666666667) internal successors, (1720), 6 states have internal predecessors, (1720), 0 states have call successors, (0), 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 14:37:06,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:37:06,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 575 [2023-08-30 14:37:06,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:37:19,052 INFO L130 PetriNetUnfolder]: 98806/140004 cut-off events. [2023-08-30 14:37:19,053 INFO L131 PetriNetUnfolder]: For 325190/325190 co-relation queries the response was YES. [2023-08-30 14:37:20,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438047 conditions, 140004 events. 98806/140004 cut-off events. For 325190/325190 co-relation queries the response was YES. Maximal size of possible extension queue 3430. Compared 979147 event pairs, 32403 based on Foata normal form. 0/129284 useless extension candidates. Maximal degree in co-relation 438000. Up to 65674 conditions per place. [2023-08-30 14:37:20,433 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 178 selfloop transitions, 8 changer transitions 1/187 dead transitions. [2023-08-30 14:37:20,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 187 transitions, 1744 flow [2023-08-30 14:37:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:37:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:37:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1796 transitions. [2023-08-30 14:37:20,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205797101449275 [2023-08-30 14:37:20,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1796 transitions. [2023-08-30 14:37:20,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1796 transitions. [2023-08-30 14:37:20,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:37:20,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1796 transitions. [2023-08-30 14:37:20,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.3333333333333) internal successors, (1796), 6 states have internal predecessors, (1796), 0 states have call successors, (0), 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 14:37:20,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:37:20,439 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:37:20,439 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 1081 flow. Second operand 6 states and 1796 transitions. [2023-08-30 14:37:20,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 187 transitions, 1744 flow [2023-08-30 14:37:21,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 187 transitions, 1683 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:37:21,348 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 1047 flow [2023-08-30 14:37:21,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1047, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2023-08-30 14:37:21,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2023-08-30 14:37:21,349 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 1047 flow [2023-08-30 14:37:21,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.6666666666667) internal successors, (1720), 6 states have internal predecessors, (1720), 0 states have call successors, (0), 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 14:37:21,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:37:21,349 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 14:37:21,360 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 14:37:21,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 14:37:21,554 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:37:21,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:37:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1987002672, now seen corresponding path program 2 times [2023-08-30 14:37:21,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:37:21,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949260545] [2023-08-30 14:37:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:37:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:37:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:37:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:37:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:37:21,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949260545] [2023-08-30 14:37:21,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949260545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:37:21,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871600465] [2023-08-30 14:37:21,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:37:21,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:37:21,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:37:21,742 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 14:37:21,768 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 14:37:21,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:37:21,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:37:21,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:37:21,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:37:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 14:37:21,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:37:21,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871600465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:37:21,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:37:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 14:37:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067843921] [2023-08-30 14:37:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:37:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:37:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:37:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:37:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 14:37:21,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 575 [2023-08-30 14:37:21,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 1047 flow. Second operand has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 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 14:37:21,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:37:21,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 575 [2023-08-30 14:37:21,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:37:35,225 INFO L130 PetriNetUnfolder]: 97955/138457 cut-off events. [2023-08-30 14:37:35,225 INFO L131 PetriNetUnfolder]: For 373286/373286 co-relation queries the response was YES. [2023-08-30 14:37:36,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447344 conditions, 138457 events. 97955/138457 cut-off events. For 373286/373286 co-relation queries the response was YES. Maximal size of possible extension queue 3405. Compared 967850 event pairs, 70470 based on Foata normal form. 3/127740 useless extension candidates. Maximal degree in co-relation 447296. Up to 138401 conditions per place. [2023-08-30 14:37:36,658 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 91 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2023-08-30 14:37:36,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 116 transitions, 1204 flow [2023-08-30 14:37:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:37:36,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:37:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-08-30 14:37:36,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008695652173913 [2023-08-30 14:37:36,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-08-30 14:37:36,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-08-30 14:37:36,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:37:36,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-08-30 14:37:36,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 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 14:37:36,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:37:36,663 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:37:36,663 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 1047 flow. Second operand 4 states and 1152 transitions. [2023-08-30 14:37:36,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 116 transitions, 1204 flow [2023-08-30 14:37:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 116 transitions, 1165 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-30 14:37:38,069 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 983 flow [2023-08-30 14:37:38,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=983, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2023-08-30 14:37:38,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2023-08-30 14:37:38,070 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 983 flow [2023-08-30 14:37:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 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 14:37:38,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:37:38,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:37:38,075 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 14:37:38,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:37:38,271 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:37:38,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:37:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash 941464443, now seen corresponding path program 1 times [2023-08-30 14:37:38,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:37:38,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37773909] [2023-08-30 14:37:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:37:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:37:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:37:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:37:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:37:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37773909] [2023-08-30 14:37:38,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37773909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:37:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062449652] [2023-08-30 14:37:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:37:38,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:37:38,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:37:38,367 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 14:37:38,369 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 14:37:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:37:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:37:38,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:37:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:37:38,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:37:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:37:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062449652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:37:38,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:37:38,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 14:37:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933333363] [2023-08-30 14:37:38,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:37:38,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 14:37:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:37:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 14:37:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 14:37:39,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 575 [2023-08-30 14:37:39,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 983 flow. Second operand has 16 states, 16 states have (on average 265.125) internal successors, (4242), 16 states have internal predecessors, (4242), 0 states have call successors, (0), 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 14:37:39,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:37:39,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 575 [2023-08-30 14:37:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:37:49,629 INFO L130 PetriNetUnfolder]: 82459/118107 cut-off events. [2023-08-30 14:37:49,629 INFO L131 PetriNetUnfolder]: For 223774/223774 co-relation queries the response was YES. [2023-08-30 14:37:50,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344029 conditions, 118107 events. 82459/118107 cut-off events. For 223774/223774 co-relation queries the response was YES. Maximal size of possible extension queue 2920. Compared 845412 event pairs, 28878 based on Foata normal form. 2534/112833 useless extension candidates. Maximal degree in co-relation 343984. Up to 44118 conditions per place. [2023-08-30 14:37:50,745 INFO L137 encePairwiseOnDemand]: 565/575 looper letters, 251 selfloop transitions, 66 changer transitions 8/325 dead transitions. [2023-08-30 14:37:50,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 325 transitions, 2542 flow [2023-08-30 14:37:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 14:37:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 14:37:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6267 transitions. [2023-08-30 14:37:50,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47387523629489603 [2023-08-30 14:37:50,750 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6267 transitions. [2023-08-30 14:37:50,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6267 transitions. [2023-08-30 14:37:50,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:37:50,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6267 transitions. [2023-08-30 14:37:50,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 272.4782608695652) internal successors, (6267), 23 states have internal predecessors, (6267), 0 states have call successors, (0), 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 14:37:50,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 575.0) internal successors, (13800), 24 states have internal predecessors, (13800), 0 states have call successors, (0), 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 14:37:50,765 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 575.0) internal successors, (13800), 24 states have internal predecessors, (13800), 0 states have call successors, (0), 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 14:37:50,765 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 983 flow. Second operand 23 states and 6267 transitions. [2023-08-30 14:37:50,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 325 transitions, 2542 flow [2023-08-30 14:37:50,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 325 transitions, 2516 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:37:50,995 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1220 flow [2023-08-30 14:37:50,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1220, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2023-08-30 14:37:50,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2023-08-30 14:37:50,995 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1220 flow [2023-08-30 14:37:50,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.125) internal successors, (4242), 16 states have internal predecessors, (4242), 0 states have call successors, (0), 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 14:37:50,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:37:50,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:37:51,003 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 14:37:51,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:37:51,201 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:37:51,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:37:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2124159858, now seen corresponding path program 1 times [2023-08-30 14:37:51,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:37:51,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908515812] [2023-08-30 14:37:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:37:51,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:37:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:37:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:37:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:37:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908515812] [2023-08-30 14:37:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908515812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:37:51,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:37:51,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:37:51,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264514644] [2023-08-30 14:37:51,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:37:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:37:51,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:37:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:37:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:37:51,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 14:37:51,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1220 flow. Second operand has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 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 14:37:51,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:37:51,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 14:37:51,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:38:01,278 INFO L130 PetriNetUnfolder]: 70087/100663 cut-off events. [2023-08-30 14:38:01,278 INFO L131 PetriNetUnfolder]: For 355311/355311 co-relation queries the response was YES. [2023-08-30 14:38:02,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337671 conditions, 100663 events. 70087/100663 cut-off events. For 355311/355311 co-relation queries the response was YES. Maximal size of possible extension queue 2497. Compared 705900 event pairs, 23970 based on Foata normal form. 0/98323 useless extension candidates. Maximal degree in co-relation 337617. Up to 52290 conditions per place. [2023-08-30 14:38:02,394 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 141 selfloop transitions, 2 changer transitions 7/150 dead transitions. [2023-08-30 14:38:02,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 150 transitions, 1644 flow [2023-08-30 14:38:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:38:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:38:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1191 transitions. [2023-08-30 14:38:02,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178260869565218 [2023-08-30 14:38:02,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1191 transitions. [2023-08-30 14:38:02,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1191 transitions. [2023-08-30 14:38:02,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:38:02,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1191 transitions. [2023-08-30 14:38:02,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 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 14:38:02,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:38:02,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:38:02,399 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1220 flow. Second operand 4 states and 1191 transitions. [2023-08-30 14:38:02,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 150 transitions, 1644 flow [2023-08-30 14:38:04,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 150 transitions, 1475 flow, removed 24 selfloop flow, removed 12 redundant places. [2023-08-30 14:38:04,357 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1023 flow [2023-08-30 14:38:04,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1023, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2023-08-30 14:38:04,357 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2023-08-30 14:38:04,357 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1023 flow [2023-08-30 14:38:04,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 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 14:38:04,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:38:04,358 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-30 14:38:04,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 14:38:04,358 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:38:04,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:38:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -663508963, now seen corresponding path program 1 times [2023-08-30 14:38:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:38:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874559116] [2023-08-30 14:38:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:38:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:38:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:38:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:38:04,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:38:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874559116] [2023-08-30 14:38:04,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874559116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:38:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340988842] [2023-08-30 14:38:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:38:04,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:38:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:38:04,525 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 14:38:04,532 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 14:38:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:38:04,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 14:38:04,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:38:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:38:04,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:38:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:38:04,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340988842] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:38:04,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:38:04,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 14:38:04,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52695190] [2023-08-30 14:38:04,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:38:04,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 14:38:04,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:38:04,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 14:38:04,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 14:38:05,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 575 [2023-08-30 14:38:05,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1023 flow. Second operand has 25 states, 25 states have (on average 280.12) internal successors, (7003), 25 states have internal predecessors, (7003), 0 states have call successors, (0), 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 14:38:05,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:38:05,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 575 [2023-08-30 14:38:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:38:27,573 INFO L130 PetriNetUnfolder]: 152406/218381 cut-off events. [2023-08-30 14:38:27,573 INFO L131 PetriNetUnfolder]: For 924393/924393 co-relation queries the response was YES. [2023-08-30 14:38:29,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748832 conditions, 218381 events. 152406/218381 cut-off events. For 924393/924393 co-relation queries the response was YES. Maximal size of possible extension queue 3158. Compared 1584486 event pairs, 110439 based on Foata normal form. 108/213029 useless extension candidates. Maximal degree in co-relation 748783. Up to 34062 conditions per place. [2023-08-30 14:38:29,926 INFO L137 encePairwiseOnDemand]: 568/575 looper letters, 684 selfloop transitions, 148 changer transitions 0/832 dead transitions. [2023-08-30 14:38:29,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 832 transitions, 6687 flow [2023-08-30 14:38:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 14:38:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 14:38:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7308 transitions. [2023-08-30 14:38:29,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295652173913044 [2023-08-30 14:38:29,931 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7308 transitions. [2023-08-30 14:38:29,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7308 transitions. [2023-08-30 14:38:29,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:38:29,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7308 transitions. [2023-08-30 14:38:29,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 304.5) internal successors, (7308), 24 states have internal predecessors, (7308), 0 states have call successors, (0), 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 14:38:29,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 575.0) internal successors, (14375), 25 states have internal predecessors, (14375), 0 states have call successors, (0), 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 14:38:29,947 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 575.0) internal successors, (14375), 25 states have internal predecessors, (14375), 0 states have call successors, (0), 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 14:38:29,947 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1023 flow. Second operand 24 states and 7308 transitions. [2023-08-30 14:38:29,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 832 transitions, 6687 flow [2023-08-30 14:39:22,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 832 transitions, 6404 flow, removed 126 selfloop flow, removed 8 redundant places. [2023-08-30 14:39:22,161 INFO L231 Difference]: Finished difference. Result has 157 places, 192 transitions, 2130 flow [2023-08-30 14:39:22,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2130, PETRI_PLACES=157, PETRI_TRANSITIONS=192} [2023-08-30 14:39:22,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2023-08-30 14:39:22,162 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 192 transitions, 2130 flow [2023-08-30 14:39:22,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 280.12) internal successors, (7003), 25 states have internal predecessors, (7003), 0 states have call successors, (0), 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 14:39:22,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:39:22,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:39:22,168 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 14:39:22,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:39:22,364 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:39:22,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:39:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 429139500, now seen corresponding path program 1 times [2023-08-30 14:39:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:39:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844752403] [2023-08-30 14:39:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:39:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:39:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:39:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:39:22,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:39:22,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844752403] [2023-08-30 14:39:22,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844752403] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:39:22,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654558839] [2023-08-30 14:39:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:39:22,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:39:22,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:39:22,425 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 14:39:22,427 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 14:39:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:39:22,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:39:22,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:39:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:39:22,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:39:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:39:22,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654558839] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:39:22,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:39:22,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:39:22,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676144220] [2023-08-30 14:39:22,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:39:22,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:39:22,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:39:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:39:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:39:22,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 575 [2023-08-30 14:39:22,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 192 transitions, 2130 flow. Second operand has 7 states, 7 states have (on average 291.42857142857144) internal successors, (2040), 7 states have internal predecessors, (2040), 0 states have call successors, (0), 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 14:39:22,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:39:22,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 575 [2023-08-30 14:39:22,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:40:17,199 INFO L130 PetriNetUnfolder]: 312174/443165 cut-off events. [2023-08-30 14:40:17,199 INFO L131 PetriNetUnfolder]: For 1049593/1049593 co-relation queries the response was YES. [2023-08-30 14:40:21,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329848 conditions, 443165 events. 312174/443165 cut-off events. For 1049593/1049593 co-relation queries the response was YES. Maximal size of possible extension queue 6270. Compared 3430474 event pairs, 51345 based on Foata normal form. 25074/457235 useless extension candidates. Maximal degree in co-relation 1329792. Up to 114535 conditions per place. [2023-08-30 14:40:23,071 INFO L137 encePairwiseOnDemand]: 572/575 looper letters, 282 selfloop transitions, 5 changer transitions 0/287 dead transitions. [2023-08-30 14:40:23,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 287 transitions, 3148 flow [2023-08-30 14:40:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:40:23,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:40:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1813 transitions. [2023-08-30 14:40:23,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255072463768116 [2023-08-30 14:40:23,073 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1813 transitions. [2023-08-30 14:40:23,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1813 transitions. [2023-08-30 14:40:23,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:40:23,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1813 transitions. [2023-08-30 14:40:23,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 302.1666666666667) internal successors, (1813), 6 states have internal predecessors, (1813), 0 states have call successors, (0), 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 14:40:23,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:40:23,078 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:40:23,078 INFO L175 Difference]: Start difference. First operand has 157 places, 192 transitions, 2130 flow. Second operand 6 states and 1813 transitions. [2023-08-30 14:40:23,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 287 transitions, 3148 flow [2023-08-30 14:40:36,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 287 transitions, 2774 flow, removed 75 selfloop flow, removed 11 redundant places. [2023-08-30 14:40:36,614 INFO L231 Difference]: Finished difference. Result has 154 places, 195 transitions, 1792 flow [2023-08-30 14:40:36,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1792, PETRI_PLACES=154, PETRI_TRANSITIONS=195} [2023-08-30 14:40:36,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2023-08-30 14:40:36,615 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 195 transitions, 1792 flow [2023-08-30 14:40:36,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 291.42857142857144) internal successors, (2040), 7 states have internal predecessors, (2040), 0 states have call successors, (0), 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 14:40:36,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:40:36,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:40:36,622 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 14:40:36,822 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,SelfDestructingSolverStorable22 [2023-08-30 14:40:36,822 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:40:36,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:40:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1110926821, now seen corresponding path program 2 times [2023-08-30 14:40:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:40:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536043794] [2023-08-30 14:40:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:40:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:40:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:40:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:40:36,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:40:36,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536043794] [2023-08-30 14:40:36,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536043794] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:40:36,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680353597] [2023-08-30 14:40:36,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:40:36,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:40:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:40:36,877 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 14:40:36,905 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 14:40:37,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:40:37,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:40:37,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:40:37,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:40:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:40:37,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:40:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:40:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680353597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:40:37,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:40:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 14:40:37,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955261197] [2023-08-30 14:40:37,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:40:37,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:40:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:40:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:40:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:40:37,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 575 [2023-08-30 14:40:37,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 195 transitions, 1792 flow. Second operand has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 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 14:40:37,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:40:37,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 575 [2023-08-30 14:40:37,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:41:54,356 INFO L130 PetriNetUnfolder]: 407430/576263 cut-off events. [2023-08-30 14:41:54,356 INFO L131 PetriNetUnfolder]: For 1656659/1656659 co-relation queries the response was YES. [2023-08-30 14:42:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803698 conditions, 576263 events. 407430/576263 cut-off events. For 1656659/1656659 co-relation queries the response was YES. Maximal size of possible extension queue 7990. Compared 4497059 event pairs, 103761 based on Foata normal form. 11802/588065 useless extension candidates. Maximal degree in co-relation 1803639. Up to 200279 conditions per place. [2023-08-30 14:42:01,055 INFO L137 encePairwiseOnDemand]: 570/575 looper letters, 159 selfloop transitions, 1 changer transitions 107/267 dead transitions. [2023-08-30 14:42:01,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 267 transitions, 2676 flow [2023-08-30 14:42:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:42:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:42:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1781 transitions. [2023-08-30 14:42:01,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516231884057971 [2023-08-30 14:42:01,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1781 transitions. [2023-08-30 14:42:01,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1781 transitions. [2023-08-30 14:42:01,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:42:01,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1781 transitions. [2023-08-30 14:42:01,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 296.8333333333333) internal successors, (1781), 6 states have internal predecessors, (1781), 0 states have call successors, (0), 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 14:42:01,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:42:01,063 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 575.0) internal successors, (4025), 7 states have internal predecessors, (4025), 0 states have call successors, (0), 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 14:42:01,063 INFO L175 Difference]: Start difference. First operand has 154 places, 195 transitions, 1792 flow. Second operand 6 states and 1781 transitions. [2023-08-30 14:42:01,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 267 transitions, 2676 flow [2023-08-30 14:42:59,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 267 transitions, 2580 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-08-30 14:42:59,141 INFO L231 Difference]: Finished difference. Result has 148 places, 160 transitions, 1593 flow [2023-08-30 14:42:59,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1593, PETRI_PLACES=148, PETRI_TRANSITIONS=160} [2023-08-30 14:42:59,141 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2023-08-30 14:42:59,142 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 160 transitions, 1593 flow [2023-08-30 14:42:59,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 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 14:42:59,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:42:59,142 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-08-30 14:42:59,146 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 14:42:59,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 14:42:59,343 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:42:59,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:42:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -454258019, now seen corresponding path program 2 times [2023-08-30 14:42:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:42:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510788058] [2023-08-30 14:42:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:42:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:42:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:42:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:42:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:42:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510788058] [2023-08-30 14:42:59,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510788058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:42:59,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253207643] [2023-08-30 14:42:59,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:42:59,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:42:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:42:59,853 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 14:42:59,855 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 14:43:00,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:43:00,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:43:00,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:43:00,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:43:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-30 14:43:00,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:43:00,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253207643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:43:00,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:43:00,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [24] total 26 [2023-08-30 14:43:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933105029] [2023-08-30 14:43:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:43:00,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:43:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:43:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:43:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2023-08-30 14:43:00,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 575 [2023-08-30 14:43:00,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 160 transitions, 1593 flow. Second operand has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 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 14:43:00,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:43:00,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 575 [2023-08-30 14:43:00,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:43:00,174 INFO L130 PetriNetUnfolder]: 93/392 cut-off events. [2023-08-30 14:43:00,174 INFO L131 PetriNetUnfolder]: For 2946/2946 co-relation queries the response was YES. [2023-08-30 14:43:00,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 392 events. 93/392 cut-off events. For 2946/2946 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1931 event pairs, 0 based on Foata normal form. 9/401 useless extension candidates. Maximal degree in co-relation 1767. Up to 300 conditions per place. [2023-08-30 14:43:00,176 INFO L137 encePairwiseOnDemand]: 571/575 looper letters, 0 selfloop transitions, 0 changer transitions 155/155 dead transitions. [2023-08-30 14:43:00,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 155 transitions, 1661 flow [2023-08-30 14:43:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:43:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:43:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1127 transitions. [2023-08-30 14:43:00,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2023-08-30 14:43:00,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1127 transitions. [2023-08-30 14:43:00,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1127 transitions. [2023-08-30 14:43:00,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:43:00,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1127 transitions. [2023-08-30 14:43:00,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 281.75) internal successors, (1127), 4 states have internal predecessors, (1127), 0 states have call successors, (0), 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 14:43:00,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:43:00,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 575.0) internal successors, (2875), 5 states have internal predecessors, (2875), 0 states have call successors, (0), 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 14:43:00,180 INFO L175 Difference]: Start difference. First operand has 148 places, 160 transitions, 1593 flow. Second operand 4 states and 1127 transitions. [2023-08-30 14:43:00,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 155 transitions, 1661 flow [2023-08-30 14:43:00,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 155 transitions, 1206 flow, removed 3 selfloop flow, removed 34 redundant places. [2023-08-30 14:43:00,186 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-30 14:43:00,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=575, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-30 14:43:00,187 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2023-08-30 14:43:00,187 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-30 14:43:00,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 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 14:43:00,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-30 14:43:00,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:43:00,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:43:00,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:43:00,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:43:00,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:43:00,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:43:00,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:43:00,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:43:00,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:43:00,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:43:00,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:43:00,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-30 14:43:00,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 21 remaining) [2023-08-30 14:43:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 21 remaining) [2023-08-30 14:43:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:43:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:43:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:43:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:43:00,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:43:00,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:43:00,199 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 14:43:00,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 14:43:00,399 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:43:00,403 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:43:00,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:43:00,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:43:00 BasicIcfg [2023-08-30 14:43:00,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:43:00,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:43:00,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:43:00,406 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:43:00,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:35:32" (3/4) ... [2023-08-30 14:43:00,408 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:43:00,413 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 14:43:00,413 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 14:43:00,413 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 14:43:00,423 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-08-30 14:43:00,423 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 14:43:00,424 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:43:00,424 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:43:00,472 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:43:00,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:43:00,472 INFO L158 Benchmark]: Toolchain (without parser) took 449357.05ms. Allocated memory was 71.3MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 48.6MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 7.9GB. Max. memory is 16.1GB. [2023-08-30 14:43:00,473 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:43:00,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.47ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 36.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 14:43:00,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.20ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 34.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:43:00,473 INFO L158 Benchmark]: Boogie Preprocessor took 38.80ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 51.8MB in the end (delta: -17.3MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2023-08-30 14:43:00,474 INFO L158 Benchmark]: RCFGBuilder took 734.46ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 27.6MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-08-30 14:43:00,474 INFO L158 Benchmark]: TraceAbstraction took 448263.33ms. Allocated memory was 71.3MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 27.0MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 7.9GB. Max. memory is 16.1GB. [2023-08-30 14:43:00,474 INFO L158 Benchmark]: Witness Printer took 66.55ms. Allocated memory is still 16.1GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 14:43:00,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.47ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 36.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.20ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 34.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.80ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 51.8MB in the end (delta: -17.3MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * RCFGBuilder took 734.46ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 27.6MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 448263.33ms. Allocated memory was 71.3MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 27.0MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 7.9GB. Max. memory is 16.1GB. * Witness Printer took 66.55ms. Allocated memory is still 16.1GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 224 PlacesBefore, 41 PlacesAfterwards, 235 TransitionsBefore, 39 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 7 FixpointIterations, 151 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 14 ConcurrentYvCompositions, 13 ChoiceCompositions, 265 TotalNumberOfCompositions, 5555 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4905, independent: 4791, independent conditional: 0, independent unconditional: 4791, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2278, independent: 2253, independent conditional: 0, independent unconditional: 2253, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4905, independent: 2538, independent conditional: 0, independent unconditional: 2538, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 2278, unknown conditional: 0, unknown unconditional: 2278] , Statistics on independence cache: Total cache size (in pairs): 136, Positive cache size: 124, Positive conditional cache size: 0, Positive unconditional cache size: 124, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: 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: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: 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, 338 locations, 21 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: 448.1s, OverallIterations: 25, TraceHistogramMax: 22, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 432.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7954 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6851 mSDsluCounter, 1792 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1389 mSDsCounter, 514 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8977 IncrementalHoareTripleChecker+Invalid, 9491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 514 mSolverCounterUnsat, 403 mSDtfsCounter, 8977 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 174 SyntacticMatches, 6 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2130occurred in iteration=22, InterpolantAutomatonStates: 182, 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, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 411 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 1662 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2419 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 45 InterpolantComputations, 17 PerfectInterpolantSequences, 413/949 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:43:00,494 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