./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/chl-word-symm.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 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:38:26,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:38:26,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:38:26,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:38:26,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:38:26,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:38:26,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:38:26,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:38:26,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:38:26,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:38:26,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:38:26,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:38:26,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:38:26,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:38:26,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:38:26,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:38:26,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:38:26,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:38:26,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:38:26,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:38:26,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:38:26,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:38:26,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:38:26,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:38:26,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:38:26,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:38:26,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:38:26,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:38:26,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:38:26,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:38:26,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:38:26,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:38:26,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:38:26,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:38:26,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:38:26,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:38:26,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:38:26,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:38:26,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:38:26,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:38:26,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:38:26,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:38:26,564 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:38:26,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:38:26,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:38:26,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:38:26,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:38:26,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:38:26,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:38:26,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:38:26,566 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:38:26,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:38:26,567 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:38:26,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:38:26,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:38:26,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:38:26,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:38:26,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:38:26,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:38:26,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:38:26,568 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:38:26,569 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:38:26,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:38:26,569 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:38:26,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:38:26,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:38:26,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:38:26,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:38:26,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:38:26,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:38:26,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:38:26,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:38:26,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:38:26,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:38:26,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:38:26,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:38:26,571 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:38:26,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:38:26,571 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:38:26,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:38:26,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:38:26,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:38:26,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:38:26,843 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:38:26,843 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:38:26,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-09-01 07:38:27,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:38:27,974 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:38:27,975 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2023-09-01 07:38:27,985 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eae07cd4/26c97699922243e3b69143696b3cbd75/FLAG1188ffcdd [2023-09-01 07:38:27,999 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eae07cd4/26c97699922243e3b69143696b3cbd75 [2023-09-01 07:38:28,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:38:28,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:38:28,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:38:28,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:38:28,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:38:28,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6254a330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28, skipping insertion in model container [2023-09-01 07:38:28,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:38:28,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:38:28,193 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/chl-word-symm.wvr.c[2848,2861] [2023-09-01 07:38:28,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:38:28,210 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:38:28,244 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/chl-word-symm.wvr.c[2848,2861] [2023-09-01 07:38:28,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:38:28,261 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:38:28,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28 WrapperNode [2023-09-01 07:38:28,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:38:28,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:38:28,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:38:28,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:38:28,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,304 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 138 [2023-09-01 07:38:28,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:38:28,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:38:28,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:38:28,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:38:28,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,349 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:38:28,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:38:28,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:38:28,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:38:28,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (1/1) ... [2023-09-01 07:38:28,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:38:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:28,399 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) [2023-09-01 07:38:28,405 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 [2023-09-01 07:38:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:38:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:38:28,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:38:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:38:28,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:38:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:38:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:38:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:38:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:38:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:38:28,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:38:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:38:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:38:28,425 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:38:28,516 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:38:28,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:38:28,865 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:38:28,872 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:38:28,872 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:38:28,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:38:28 BoogieIcfgContainer [2023-09-01 07:38:28,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:38:28,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:38:28,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:38:28,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:38:28,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:38:28" (1/3) ... [2023-09-01 07:38:28,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbbba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:38:28, skipping insertion in model container [2023-09-01 07:38:28,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:38:28" (2/3) ... [2023-09-01 07:38:28,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dbbba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:38:28, skipping insertion in model container [2023-09-01 07:38:28,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:38:28" (3/3) ... [2023-09-01 07:38:28,890 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-09-01 07:38:28,896 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:38:28,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:38:28,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 07:38:28,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:38:28,976 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:38:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 235 transitions, 486 flow [2023-09-01 07:38:29,089 INFO L130 PetriNetUnfolder]: 21/233 cut-off events. [2023-09-01 07:38:29,090 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:38:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 233 events. 21/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 340 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-09-01 07:38:29,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 235 transitions, 486 flow [2023-09-01 07:38:29,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 205 transitions, 419 flow [2023-09-01 07:38:29,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:38:29,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 205 transitions, 419 flow [2023-09-01 07:38:29,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 205 transitions, 419 flow [2023-09-01 07:38:29,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 205 transitions, 419 flow [2023-09-01 07:38:29,162 INFO L130 PetriNetUnfolder]: 18/205 cut-off events. [2023-09-01 07:38:29,162 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:38:29,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 18/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 328 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-09-01 07:38:29,166 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2023-09-01 07:38:34,680 INFO L134 LiptonReduction]: Checked pairs total: 5000 [2023-09-01 07:38:34,680 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-09-01 07:38:34,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:38:34,696 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;@47ce66d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:38:34,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-09-01 07:38:34,698 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:38:34,698 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:38:34,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:34,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:38:34,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:34,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash 28505, now seen corresponding path program 1 times [2023-09-01 07:38:34,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:34,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117912783] [2023-09-01 07:38:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:34,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:34,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:34,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117912783] [2023-09-01 07:38:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117912783] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:34,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:38:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041822932] [2023-09-01 07:38:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:34,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:38:34,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-09-01 07:38:34,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:34,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:34,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-09-01 07:38:34,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:35,096 INFO L130 PetriNetUnfolder]: 601/975 cut-off events. [2023-09-01 07:38:35,097 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-09-01 07:38:35,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 975 events. 601/975 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4465 event pairs, 414 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 912. Up to 483 conditions per place. [2023-09-01 07:38:35,105 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 61 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-09-01 07:38:35,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 66 transitions, 280 flow [2023-09-01 07:38:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-09-01 07:38:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2023-09-01 07:38:35,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-09-01 07:38:35,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-09-01 07:38:35,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:35,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-09-01 07:38:35,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,135 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 3 states and 708 transitions. [2023-09-01 07:38:35,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 66 transitions, 280 flow [2023-09-01 07:38:35,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:38:35,140 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 112 flow [2023-09-01 07:38:35,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-09-01 07:38:35,143 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-09-01 07:38:35,143 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 112 flow [2023-09-01 07:38:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:35,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:38:35,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:38:35,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:35,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 884911, now seen corresponding path program 1 times [2023-09-01 07:38:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:35,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769887015] [2023-09-01 07:38:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769887015] [2023-09-01 07:38:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769887015] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721475110] [2023-09-01 07:38:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:35,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:35,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:35,248 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) [2023-09-01 07:38:35,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:38:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:35,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:38:35,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:38:35,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721475110] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:35,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:38:35,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 07:38:35,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494956120] [2023-09-01 07:38:35,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:35,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:38:35,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:35,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:38:35,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:38:35,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-09-01 07:38:35,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:35,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-09-01 07:38:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:35,553 INFO L130 PetriNetUnfolder]: 601/973 cut-off events. [2023-09-01 07:38:35,553 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 07:38:35,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 973 events. 601/973 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4352 event pairs, 414 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 983. Up to 480 conditions per place. [2023-09-01 07:38:35,557 INFO L137 encePairwiseOnDemand]: 454/460 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-09-01 07:38:35,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 64 transitions, 288 flow [2023-09-01 07:38:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:38:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:38:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 917 transitions. [2023-09-01 07:38:35,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983695652173913 [2023-09-01 07:38:35,559 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 917 transitions. [2023-09-01 07:38:35,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 917 transitions. [2023-09-01 07:38:35,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:35,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 917 transitions. [2023-09-01 07:38:35,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 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) [2023-09-01 07:38:35,564 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 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) [2023-09-01 07:38:35,564 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 112 flow. Second operand 4 states and 917 transitions. [2023-09-01 07:38:35,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 64 transitions, 288 flow [2023-09-01 07:38:35,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 64 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:38:35,566 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 104 flow [2023-09-01 07:38:35,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-09-01 07:38:35,567 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 07:38:35,567 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 104 flow [2023-09-01 07:38:35,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:35,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:38:35,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:35,772 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 [2023-09-01 07:38:35,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:35,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:35,773 INFO L85 PathProgramCache]: Analyzing trace with hash 884912, now seen corresponding path program 1 times [2023-09-01 07:38:35,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:35,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808399130] [2023-09-01 07:38:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:35,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808399130] [2023-09-01 07:38:35,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808399130] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384539461] [2023-09-01 07:38:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:35,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:35,827 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) [2023-09-01 07:38:35,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:38:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:35,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:38:35,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:38:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384539461] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:38:35,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:38:35,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:38:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325993486] [2023-09-01 07:38:35,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:38:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:38:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:38:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:38:35,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-09-01 07:38:35,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 214.14285714285714) internal successors, (1499), 7 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:35,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:35,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-09-01 07:38:35,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:36,254 INFO L130 PetriNetUnfolder]: 1501/2428 cut-off events. [2023-09-01 07:38:36,255 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 07:38:36,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 2428 events. 1501/2428 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12437 event pairs, 1035 based on Foata normal form. 0/1198 useless extension candidates. Maximal degree in co-relation 3923. Up to 481 conditions per place. [2023-09-01 07:38:36,263 INFO L137 encePairwiseOnDemand]: 454/460 looper letters, 140 selfloop transitions, 13 changer transitions 0/154 dead transitions. [2023-09-01 07:38:36,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 154 transitions, 684 flow [2023-09-01 07:38:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:38:36,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:38:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1437 transitions. [2023-09-01 07:38:36,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206521739130435 [2023-09-01 07:38:36,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1437 transitions. [2023-09-01 07:38:36,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1437 transitions. [2023-09-01 07:38:36,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:36,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1437 transitions. [2023-09-01 07:38:36,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,273 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,274 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 104 flow. Second operand 6 states and 1437 transitions. [2023-09-01 07:38:36,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 154 transitions, 684 flow [2023-09-01 07:38:36,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 154 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:38:36,276 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 195 flow [2023-09-01 07:38:36,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2023-09-01 07:38:36,277 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-09-01 07:38:36,277 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 195 flow [2023-09-01 07:38:36,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 214.14285714285714) internal successors, (1499), 7 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:36,278 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:38:36,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:36,482 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,SelfDestructingSolverStorable2 [2023-09-01 07:38:36,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:36,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 593827034, now seen corresponding path program 2 times [2023-09-01 07:38:36,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:36,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580897238] [2023-09-01 07:38:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:36,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580897238] [2023-09-01 07:38:36,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580897238] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411468759] [2023-09-01 07:38:36,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:38:36,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:36,577 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) [2023-09-01 07:38:36,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:38:36,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:38:36,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:38:36,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:38:36,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:38:36,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:38:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411468759] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:36,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:38:36,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:38:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680396636] [2023-09-01 07:38:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:36,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:36,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:38:36,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 460 [2023-09-01 07:38:36,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:36,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 460 [2023-09-01 07:38:36,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:36,832 INFO L130 PetriNetUnfolder]: 1501/2427 cut-off events. [2023-09-01 07:38:36,832 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-09-01 07:38:36,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 2427 events. 1501/2427 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13017 event pairs, 1035 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 3933. Up to 2382 conditions per place. [2023-09-01 07:38:36,841 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-09-01 07:38:36,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 273 flow [2023-09-01 07:38:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-09-01 07:38:36,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2023-09-01 07:38:36,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-09-01 07:38:36,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-09-01 07:38:36,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:36,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-09-01 07:38:36,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,847 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 195 flow. Second operand 3 states and 678 transitions. [2023-09-01 07:38:36,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 273 flow [2023-09-01 07:38:36,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 254 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:38:36,849 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 178 flow [2023-09-01 07:38:36,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-09-01 07:38:36,850 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-09-01 07:38:36,850 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 178 flow [2023-09-01 07:38:36,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:36,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:36,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:36,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:37,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:37,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:37,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:37,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050114, now seen corresponding path program 1 times [2023-09-01 07:38:37,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:37,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435311107] [2023-09-01 07:38:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:37,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435311107] [2023-09-01 07:38:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435311107] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:37,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:37,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:38:37,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108614335] [2023-09-01 07:38:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:37,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:38:37,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:37,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:38:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:38:37,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 460 [2023-09-01 07:38:37,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:37,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 460 [2023-09-01 07:38:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:37,535 INFO L130 PetriNetUnfolder]: 1427/2317 cut-off events. [2023-09-01 07:38:37,536 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 07:38:37,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2317 events. 1427/2317 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12274 event pairs, 795 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 4690. Up to 1527 conditions per place. [2023-09-01 07:38:37,545 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 82 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2023-09-01 07:38:37,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 465 flow [2023-09-01 07:38:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:38:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:38:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1303 transitions. [2023-09-01 07:38:37,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721014492753623 [2023-09-01 07:38:37,549 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1303 transitions. [2023-09-01 07:38:37,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1303 transitions. [2023-09-01 07:38:37,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:37,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1303 transitions. [2023-09-01 07:38:37,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.16666666666666) internal successors, (1303), 6 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,564 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 178 flow. Second operand 6 states and 1303 transitions. [2023-09-01 07:38:37,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 465 flow [2023-09-01 07:38:37,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 93 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:38:37,567 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 220 flow [2023-09-01 07:38:37,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-09-01 07:38:37,567 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-09-01 07:38:37,568 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 220 flow [2023-09-01 07:38:37,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:37,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:37,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:38:37,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:37,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050216, now seen corresponding path program 1 times [2023-09-01 07:38:37,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:37,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088486835] [2023-09-01 07:38:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088486835] [2023-09-01 07:38:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088486835] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:37,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:38:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691525253] [2023-09-01 07:38:37,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:37,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:38:37,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:38:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:38:37,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 460 [2023-09-01 07:38:37,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:37,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 460 [2023-09-01 07:38:37,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:37,964 INFO L130 PetriNetUnfolder]: 2484/3939 cut-off events. [2023-09-01 07:38:37,965 INFO L131 PetriNetUnfolder]: For 1149/1149 co-relation queries the response was YES. [2023-09-01 07:38:37,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8872 conditions, 3939 events. 2484/3939 cut-off events. For 1149/1149 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 22146 event pairs, 1540 based on Foata normal form. 166/2603 useless extension candidates. Maximal degree in co-relation 6493. Up to 1943 conditions per place. [2023-09-01 07:38:37,980 INFO L137 encePairwiseOnDemand]: 453/460 looper letters, 74 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-09-01 07:38:37,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 492 flow [2023-09-01 07:38:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:38:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:38:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 883 transitions. [2023-09-01 07:38:37,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47989130434782606 [2023-09-01 07:38:37,983 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 883 transitions. [2023-09-01 07:38:37,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 883 transitions. [2023-09-01 07:38:37,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:37,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 883 transitions. [2023-09-01 07:38:37,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 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) [2023-09-01 07:38:37,989 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 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) [2023-09-01 07:38:37,989 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 220 flow. Second operand 4 states and 883 transitions. [2023-09-01 07:38:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 492 flow [2023-09-01 07:38:37,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 482 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 07:38:37,993 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 253 flow [2023-09-01 07:38:37,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-09-01 07:38:37,996 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-09-01 07:38:37,996 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 253 flow [2023-09-01 07:38:37,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:37,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:37,996 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:38:37,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:38:37,997 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:38,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1920641260, now seen corresponding path program 1 times [2023-09-01 07:38:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:38,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448344909] [2023-09-01 07:38:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448344909] [2023-09-01 07:38:38,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448344909] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:38,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564674268] [2023-09-01 07:38:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:38,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:38,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:38,086 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) [2023-09-01 07:38:38,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:38:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:38,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:38:38,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:38,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:38:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564674268] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:38:38,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:38:38,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:38:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573861896] [2023-09-01 07:38:38,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:38:38,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:38:38,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:38,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:38:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:38:38,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-09-01 07:38:38,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 253 flow. Second operand has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:38,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:38,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-09-01 07:38:38,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:39,250 INFO L130 PetriNetUnfolder]: 5562/8799 cut-off events. [2023-09-01 07:38:39,250 INFO L131 PetriNetUnfolder]: For 5534/5534 co-relation queries the response was YES. [2023-09-01 07:38:39,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21253 conditions, 8799 events. 5562/8799 cut-off events. For 5534/5534 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 52636 event pairs, 3436 based on Foata normal form. 12/5521 useless extension candidates. Maximal degree in co-relation 15244. Up to 1174 conditions per place. [2023-09-01 07:38:39,320 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 339 selfloop transitions, 31 changer transitions 0/371 dead transitions. [2023-09-01 07:38:39,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 371 transitions, 2217 flow [2023-09-01 07:38:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:38:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:38:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2892 transitions. [2023-09-01 07:38:39,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239130434782608 [2023-09-01 07:38:39,325 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2892 transitions. [2023-09-01 07:38:39,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2892 transitions. [2023-09-01 07:38:39,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:39,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2892 transitions. [2023-09-01 07:38:39,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.0) internal successors, (2892), 12 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:39,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:39,337 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:39,337 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 253 flow. Second operand 12 states and 2892 transitions. [2023-09-01 07:38:39,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 371 transitions, 2217 flow [2023-09-01 07:38:39,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 371 transitions, 2160 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-09-01 07:38:39,347 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 460 flow [2023-09-01 07:38:39,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=460, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-09-01 07:38:39,348 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-09-01 07:38:39,348 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 460 flow [2023-09-01 07:38:39,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:39,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:39,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:39,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 07:38:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:39,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:39,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1919050000, now seen corresponding path program 1 times [2023-09-01 07:38:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417878566] [2023-09-01 07:38:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:39,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:39,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417878566] [2023-09-01 07:38:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417878566] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:39,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:38:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137679025] [2023-09-01 07:38:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:39,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:38:39,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-09-01 07:38:39,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:39,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:39,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-09-01 07:38:39,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:40,656 INFO L130 PetriNetUnfolder]: 9281/15018 cut-off events. [2023-09-01 07:38:40,656 INFO L131 PetriNetUnfolder]: For 7895/7895 co-relation queries the response was YES. [2023-09-01 07:38:40,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35649 conditions, 15018 events. 9281/15018 cut-off events. For 7895/7895 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 103894 event pairs, 3436 based on Foata normal form. 0/9900 useless extension candidates. Maximal degree in co-relation 28969. Up to 8624 conditions per place. [2023-09-01 07:38:40,747 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 90 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-09-01 07:38:40,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 741 flow [2023-09-01 07:38:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-09-01 07:38:40,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115942028985507 [2023-09-01 07:38:40,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-09-01 07:38:40,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-09-01 07:38:40,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:40,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-09-01 07:38:40,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:40,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:40,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:40,754 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 460 flow. Second operand 3 states and 706 transitions. [2023-09-01 07:38:40,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 741 flow [2023-09-01 07:38:40,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 651 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-09-01 07:38:40,765 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 384 flow [2023-09-01 07:38:40,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2023-09-01 07:38:40,766 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-09-01 07:38:40,766 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 384 flow [2023-09-01 07:38:40,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:40,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:40,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:40,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:38:40,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:40,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -591253449, now seen corresponding path program 1 times [2023-09-01 07:38:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200532208] [2023-09-01 07:38:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200532208] [2023-09-01 07:38:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200532208] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963991176] [2023-09-01 07:38:40,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:40,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:40,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:40,852 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) [2023-09-01 07:38:40,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:38:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:40,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:38:40,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:38:40,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:38:40,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963991176] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:40,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:38:40,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 07:38:40,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500022083] [2023-09-01 07:38:40,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:40,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:40,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:38:40,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 460 [2023-09-01 07:38:40,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:40,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:40,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 460 [2023-09-01 07:38:40,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:41,837 INFO L130 PetriNetUnfolder]: 6667/10662 cut-off events. [2023-09-01 07:38:41,837 INFO L131 PetriNetUnfolder]: For 8481/8481 co-relation queries the response was YES. [2023-09-01 07:38:41,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25218 conditions, 10662 events. 6667/10662 cut-off events. For 8481/8481 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66806 event pairs, 4239 based on Foata normal form. 1000/8450 useless extension candidates. Maximal degree in co-relation 22969. Up to 10530 conditions per place. [2023-09-01 07:38:41,881 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 62 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-09-01 07:38:41,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 476 flow [2023-09-01 07:38:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2023-09-01 07:38:41,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905797101449275 [2023-09-01 07:38:41,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2023-09-01 07:38:41,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2023-09-01 07:38:41,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:41,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2023-09-01 07:38:41,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,887 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 384 flow. Second operand 3 states and 677 transitions. [2023-09-01 07:38:41,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 476 flow [2023-09-01 07:38:41,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:38:41,893 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 343 flow [2023-09-01 07:38:41,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-09-01 07:38:41,893 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-09-01 07:38:41,894 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 343 flow [2023-09-01 07:38:41,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:41,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:41,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:41,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:42,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:42,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:42,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -637678429, now seen corresponding path program 1 times [2023-09-01 07:38:42,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:42,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042695383] [2023-09-01 07:38:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042695383] [2023-09-01 07:38:42,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042695383] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:42,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:42,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:38:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73234063] [2023-09-01 07:38:42,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:42,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:38:42,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-09-01 07:38:42,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:42,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:42,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-09-01 07:38:42,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:43,358 INFO L130 PetriNetUnfolder]: 9560/15557 cut-off events. [2023-09-01 07:38:43,358 INFO L131 PetriNetUnfolder]: For 2943/2943 co-relation queries the response was YES. [2023-09-01 07:38:43,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36484 conditions, 15557 events. 9560/15557 cut-off events. For 2943/2943 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 107967 event pairs, 4239 based on Foata normal form. 0/11333 useless extension candidates. Maximal degree in co-relation 36461. Up to 10531 conditions per place. [2023-09-01 07:38:43,418 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 81 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-09-01 07:38:43,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 84 transitions, 578 flow [2023-09-01 07:38:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-09-01 07:38:43,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057971014492754 [2023-09-01 07:38:43,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-09-01 07:38:43,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-09-01 07:38:43,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:43,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-09-01 07:38:43,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:43,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:43,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:43,425 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 343 flow. Second operand 3 states and 698 transitions. [2023-09-01 07:38:43,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 84 transitions, 578 flow [2023-09-01 07:38:43,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:38:43,429 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 354 flow [2023-09-01 07:38:43,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2023-09-01 07:38:43,430 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-09-01 07:38:43,430 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 354 flow [2023-09-01 07:38:43,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:43,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:43,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:43,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:38:43,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:43,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash 127448658, now seen corresponding path program 1 times [2023-09-01 07:38:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:43,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032774031] [2023-09-01 07:38:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:43,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:43,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:43,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032774031] [2023-09-01 07:38:43,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032774031] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:43,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279563519] [2023-09-01 07:38:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:43,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:43,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:43,501 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) [2023-09-01 07:38:43,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:38:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:43,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:38:43,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:38:43,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:38:43,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279563519] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:43,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:38:43,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 07:38:43,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399991089] [2023-09-01 07:38:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:43,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:38:43,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:38:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:38:43,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-09-01 07:38:43,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:43,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:43,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-09-01 07:38:43,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:44,472 INFO L130 PetriNetUnfolder]: 7866/12807 cut-off events. [2023-09-01 07:38:44,472 INFO L131 PetriNetUnfolder]: For 5363/5363 co-relation queries the response was YES. [2023-09-01 07:38:44,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30853 conditions, 12807 events. 7866/12807 cut-off events. For 5363/5363 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 85253 event pairs, 5302 based on Foata normal form. 968/11707 useless extension candidates. Maximal degree in co-relation 30829. Up to 12443 conditions per place. [2023-09-01 07:38:44,525 INFO L137 encePairwiseOnDemand]: 456/460 looper letters, 48 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2023-09-01 07:38:44,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 448 flow [2023-09-01 07:38:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:38:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:38:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 881 transitions. [2023-09-01 07:38:44,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47880434782608694 [2023-09-01 07:38:44,528 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 881 transitions. [2023-09-01 07:38:44,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 881 transitions. [2023-09-01 07:38:44,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:44,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 881 transitions. [2023-09-01 07:38:44,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.25) internal successors, (881), 4 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:44,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 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) [2023-09-01 07:38:44,532 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 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) [2023-09-01 07:38:44,532 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 354 flow. Second operand 4 states and 881 transitions. [2023-09-01 07:38:44,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 448 flow [2023-09-01 07:38:44,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 441 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:38:44,550 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 345 flow [2023-09-01 07:38:44,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-09-01 07:38:44,551 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-09-01 07:38:44,551 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 345 flow [2023-09-01 07:38:44,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.0) internal successors, (860), 4 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:44,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:44,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:44,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:44,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:44,757 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:44,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1706806790, now seen corresponding path program 1 times [2023-09-01 07:38:44,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:44,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751737442] [2023-09-01 07:38:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:44,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751737442] [2023-09-01 07:38:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751737442] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:44,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:44,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:38:44,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527708703] [2023-09-01 07:38:44,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:44,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:38:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:44,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:38:44,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:38:44,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 460 [2023-09-01 07:38:44,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:44,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:44,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 460 [2023-09-01 07:38:44,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:45,520 INFO L130 PetriNetUnfolder]: 7206/12059 cut-off events. [2023-09-01 07:38:45,520 INFO L131 PetriNetUnfolder]: For 1628/1628 co-relation queries the response was YES. [2023-09-01 07:38:45,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28132 conditions, 12059 events. 7206/12059 cut-off events. For 1628/1628 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 84549 event pairs, 1694 based on Foata normal form. 0/10827 useless extension candidates. Maximal degree in co-relation 28110. Up to 7612 conditions per place. [2023-09-01 07:38:45,566 INFO L137 encePairwiseOnDemand]: 458/460 looper letters, 58 selfloop transitions, 1 changer transitions 15/74 dead transitions. [2023-09-01 07:38:45,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 526 flow [2023-09-01 07:38:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2023-09-01 07:38:45,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007246376811594 [2023-09-01 07:38:45,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2023-09-01 07:38:45,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2023-09-01 07:38:45,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:45,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2023-09-01 07:38:45,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:45,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:45,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:45,579 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 345 flow. Second operand 3 states and 691 transitions. [2023-09-01 07:38:45,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 526 flow [2023-09-01 07:38:45,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:38:45,593 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 313 flow [2023-09-01 07:38:45,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-09-01 07:38:45,594 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-09-01 07:38:45,595 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 313 flow [2023-09-01 07:38:45,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:45,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:45,595 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:45,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:38:45,595 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:45,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1666121501, now seen corresponding path program 1 times [2023-09-01 07:38:45,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:45,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289756076] [2023-09-01 07:38:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:38:45,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:45,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289756076] [2023-09-01 07:38:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289756076] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:45,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:38:45,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973995355] [2023-09-01 07:38:45,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:45,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:38:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:38:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:38:45,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 460 [2023-09-01 07:38:45,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:45,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:45,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 460 [2023-09-01 07:38:45,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:46,073 INFO L130 PetriNetUnfolder]: 1860/3303 cut-off events. [2023-09-01 07:38:46,073 INFO L131 PetriNetUnfolder]: For 1280/1280 co-relation queries the response was YES. [2023-09-01 07:38:46,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8705 conditions, 3303 events. 1860/3303 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19226 event pairs, 1298 based on Foata normal form. 154/3149 useless extension candidates. Maximal degree in co-relation 8684. Up to 2674 conditions per place. [2023-09-01 07:38:46,086 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 61 selfloop transitions, 3 changer transitions 20/84 dead transitions. [2023-09-01 07:38:46,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 636 flow [2023-09-01 07:38:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:38:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:38:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1071 transitions. [2023-09-01 07:38:46,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656521739130435 [2023-09-01 07:38:46,089 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1071 transitions. [2023-09-01 07:38:46,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1071 transitions. [2023-09-01 07:38:46,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:46,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1071 transitions. [2023-09-01 07:38:46,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.2) internal successors, (1071), 5 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,110 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,110 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 313 flow. Second operand 5 states and 1071 transitions. [2023-09-01 07:38:46,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 636 flow [2023-09-01 07:38:46,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:38:46,116 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 323 flow [2023-09-01 07:38:46,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-09-01 07:38:46,117 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-09-01 07:38:46,117 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 323 flow [2023-09-01 07:38:46,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:46,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:46,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 07:38:46,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:46,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2076057337, now seen corresponding path program 1 times [2023-09-01 07:38:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:46,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465722273] [2023-09-01 07:38:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:46,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:38:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:46,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465722273] [2023-09-01 07:38:46,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465722273] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:46,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:38:46,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 07:38:46,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429767599] [2023-09-01 07:38:46,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:46,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:38:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:38:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:38:46,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 460 [2023-09-01 07:38:46,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:46,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 460 [2023-09-01 07:38:46,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:46,624 INFO L130 PetriNetUnfolder]: 1526/2745 cut-off events. [2023-09-01 07:38:46,624 INFO L131 PetriNetUnfolder]: For 1042/1042 co-relation queries the response was YES. [2023-09-01 07:38:46,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 2745 events. 1526/2745 cut-off events. For 1042/1042 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15437 event pairs, 1190 based on Foata normal form. 14/2479 useless extension candidates. Maximal degree in co-relation 7634. Up to 2657 conditions per place. [2023-09-01 07:38:46,635 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 39 selfloop transitions, 12 changer transitions 19/70 dead transitions. [2023-09-01 07:38:46,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 522 flow [2023-09-01 07:38:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:38:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:38:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1068 transitions. [2023-09-01 07:38:46,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643478260869565 [2023-09-01 07:38:46,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1068 transitions. [2023-09-01 07:38:46,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1068 transitions. [2023-09-01 07:38:46,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:46,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1068 transitions. [2023-09-01 07:38:46,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 460.0) internal successors, (2760), 6 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,644 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 323 flow. Second operand 5 states and 1068 transitions. [2023-09-01 07:38:46,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 522 flow [2023-09-01 07:38:46,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 515 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 07:38:46,651 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 339 flow [2023-09-01 07:38:46,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-09-01 07:38:46,652 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-09-01 07:38:46,652 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 339 flow [2023-09-01 07:38:46,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:46,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:46,652 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:46,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 07:38:46,653 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:46,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1302376472, now seen corresponding path program 1 times [2023-09-01 07:38:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519004060] [2023-09-01 07:38:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:38:46,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:46,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519004060] [2023-09-01 07:38:46,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519004060] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:46,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661491253] [2023-09-01 07:38:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:46,697 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) [2023-09-01 07:38:46,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:38:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:46,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:38:46,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:38:46,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:38:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:38:46,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661491253] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:38:46,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:38:46,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 13 [2023-09-01 07:38:46,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493678662] [2023-09-01 07:38:46,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:38:46,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:38:46,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:38:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:38:47,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 460 [2023-09-01 07:38:47,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 339 flow. Second operand has 13 states, 13 states have (on average 204.07692307692307) internal successors, (2653), 13 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:47,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:47,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 460 [2023-09-01 07:38:47,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:47,642 INFO L130 PetriNetUnfolder]: 1238/2245 cut-off events. [2023-09-01 07:38:47,642 INFO L131 PetriNetUnfolder]: For 1253/1253 co-relation queries the response was YES. [2023-09-01 07:38:47,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 2245 events. 1238/2245 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12874 event pairs, 100 based on Foata normal form. 14/2133 useless extension candidates. Maximal degree in co-relation 6420. Up to 1044 conditions per place. [2023-09-01 07:38:47,649 INFO L137 encePairwiseOnDemand]: 452/460 looper letters, 51 selfloop transitions, 16 changer transitions 29/96 dead transitions. [2023-09-01 07:38:47,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 679 flow [2023-09-01 07:38:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 07:38:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 07:38:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2084 transitions. [2023-09-01 07:38:47,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45304347826086955 [2023-09-01 07:38:47,655 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2084 transitions. [2023-09-01 07:38:47,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2084 transitions. [2023-09-01 07:38:47,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:47,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2084 transitions. [2023-09-01 07:38:47,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 208.4) internal successors, (2084), 10 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:47,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 460.0) internal successors, (5060), 11 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:47,663 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 460.0) internal successors, (5060), 11 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:47,663 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 339 flow. Second operand 10 states and 2084 transitions. [2023-09-01 07:38:47,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 679 flow [2023-09-01 07:38:47,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 645 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 07:38:47,671 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 345 flow [2023-09-01 07:38:47,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-09-01 07:38:47,672 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-09-01 07:38:47,672 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 345 flow [2023-09-01 07:38:47,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.07692307692307) internal successors, (2653), 13 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:47,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:47,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:47,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:47,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:47,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:47,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1206893862, now seen corresponding path program 1 times [2023-09-01 07:38:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:47,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324245260] [2023-09-01 07:38:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 07:38:47,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:47,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324245260] [2023-09-01 07:38:47,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324245260] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:47,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245614039] [2023-09-01 07:38:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:47,918 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) [2023-09-01 07:38:47,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:38:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:47,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:38:48,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:38:48,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:38:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:38:48,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245614039] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:38:48,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:38:48,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-09-01 07:38:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743602325] [2023-09-01 07:38:48,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:38:48,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:38:48,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:38:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:38:48,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 460 [2023-09-01 07:38:48,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 345 flow. Second operand has 13 states, 13 states have (on average 204.23076923076923) internal successors, (2655), 13 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:48,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:48,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 460 [2023-09-01 07:38:48,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:48,952 INFO L130 PetriNetUnfolder]: 2127/3839 cut-off events. [2023-09-01 07:38:48,952 INFO L131 PetriNetUnfolder]: For 2574/2574 co-relation queries the response was YES. [2023-09-01 07:38:48,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 3839 events. 2127/3839 cut-off events. For 2574/2574 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 24911 event pairs, 621 based on Foata normal form. 126/3839 useless extension candidates. Maximal degree in co-relation 11246. Up to 1273 conditions per place. [2023-09-01 07:38:48,968 INFO L137 encePairwiseOnDemand]: 451/460 looper letters, 72 selfloop transitions, 11 changer transitions 29/112 dead transitions. [2023-09-01 07:38:48,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 112 transitions, 846 flow [2023-09-01 07:38:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:38:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:38:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2496 transitions. [2023-09-01 07:38:48,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45217391304347826 [2023-09-01 07:38:48,974 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2496 transitions. [2023-09-01 07:38:48,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2496 transitions. [2023-09-01 07:38:48,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:48,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2496 transitions. [2023-09-01 07:38:48,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:48,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:48,984 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 460.0) internal successors, (5980), 13 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:48,984 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 345 flow. Second operand 12 states and 2496 transitions. [2023-09-01 07:38:48,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 112 transitions, 846 flow [2023-09-01 07:38:49,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 814 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-09-01 07:38:49,002 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 415 flow [2023-09-01 07:38:49,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=415, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2023-09-01 07:38:49,002 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-09-01 07:38:49,002 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 415 flow [2023-09-01 07:38:49,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 204.23076923076923) internal successors, (2655), 13 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:49,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:49,003 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-09-01 07:38:49,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:49,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 07:38:49,208 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:49,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1799402700, now seen corresponding path program 2 times [2023-09-01 07:38:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:49,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595649024] [2023-09-01 07:38:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:49,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:38:49,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:49,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595649024] [2023-09-01 07:38:49,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595649024] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508470934] [2023-09-01 07:38:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:38:49,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:49,369 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) [2023-09-01 07:38:49,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 07:38:49,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:38:49,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:38:49,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:38:49,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 07:38:49,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:38:49,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508470934] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:38:49,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:38:49,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-09-01 07:38:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022523222] [2023-09-01 07:38:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:38:49,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:38:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:49,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:38:49,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-09-01 07:38:49,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 460 [2023-09-01 07:38:49,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:49,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:49,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 460 [2023-09-01 07:38:49,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:49,809 INFO L130 PetriNetUnfolder]: 1587/2918 cut-off events. [2023-09-01 07:38:49,809 INFO L131 PetriNetUnfolder]: For 2817/2817 co-relation queries the response was YES. [2023-09-01 07:38:49,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9129 conditions, 2918 events. 1587/2918 cut-off events. For 2817/2817 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 16813 event pairs, 1269 based on Foata normal form. 3/2795 useless extension candidates. Maximal degree in co-relation 9099. Up to 2918 conditions per place. [2023-09-01 07:38:49,822 INFO L137 encePairwiseOnDemand]: 458/460 looper letters, 47 selfloop transitions, 1 changer transitions 4/52 dead transitions. [2023-09-01 07:38:49,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 52 transitions, 466 flow [2023-09-01 07:38:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:38:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:38:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-09-01 07:38:49,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608695652173916 [2023-09-01 07:38:49,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-09-01 07:38:49,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-09-01 07:38:49,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:49,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-09-01 07:38:49,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:49,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:49,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:49,827 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 415 flow. Second operand 3 states and 657 transitions. [2023-09-01 07:38:49,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 52 transitions, 466 flow [2023-09-01 07:38:49,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 361 flow, removed 6 selfloop flow, removed 17 redundant places. [2023-09-01 07:38:49,836 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 226 flow [2023-09-01 07:38:49,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-09-01 07:38:49,837 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-09-01 07:38:49,837 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 226 flow [2023-09-01 07:38:49,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:49,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:38:49,837 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:49,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:50,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 07:38:50,045 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-09-01 07:38:50,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:38:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash 854946249, now seen corresponding path program 2 times [2023-09-01 07:38:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:38:50,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763428865] [2023-09-01 07:38:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:38:50,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:38:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:38:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:38:50,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:38:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763428865] [2023-09-01 07:38:50,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763428865] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:38:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705647162] [2023-09-01 07:38:50,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:38:50,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:38:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:38:50,153 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) [2023-09-01 07:38:50,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 07:38:50,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:38:50,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:38:50,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:38:50,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:38:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:38:50,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:38:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:38:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705647162] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:38:50,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:38:50,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-09-01 07:38:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469576506] [2023-09-01 07:38:50,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:38:50,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 07:38:50,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:38:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 07:38:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-09-01 07:38:50,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 460 [2023-09-01 07:38:50,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 226 flow. Second operand has 11 states, 11 states have (on average 200.27272727272728) internal successors, (2203), 11 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:50,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:38:50,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 460 [2023-09-01 07:38:50,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:38:51,047 INFO L130 PetriNetUnfolder]: 2242/3931 cut-off events. [2023-09-01 07:38:51,048 INFO L131 PetriNetUnfolder]: For 1696/1696 co-relation queries the response was YES. [2023-09-01 07:38:51,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 3931 events. 2242/3931 cut-off events. For 1696/1696 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 24541 event pairs, 414 based on Foata normal form. 126/4057 useless extension candidates. Maximal degree in co-relation 10905. Up to 1224 conditions per place. [2023-09-01 07:38:51,060 INFO L137 encePairwiseOnDemand]: 453/460 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2023-09-01 07:38:51,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 106 transitions, 637 flow [2023-09-01 07:38:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 07:38:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 07:38:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2244 transitions. [2023-09-01 07:38:51,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2023-09-01 07:38:51,065 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2244 transitions. [2023-09-01 07:38:51,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2244 transitions. [2023-09-01 07:38:51,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:38:51,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2244 transitions. [2023-09-01 07:38:51,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 204.0) internal successors, (2244), 11 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:51,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 460.0) internal successors, (5520), 12 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:51,074 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 460.0) internal successors, (5520), 12 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:51,074 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 226 flow. Second operand 11 states and 2244 transitions. [2023-09-01 07:38:51,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 106 transitions, 637 flow [2023-09-01 07:38:51,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 622 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-09-01 07:38:51,088 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-09-01 07:38:51,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-09-01 07:38:51,089 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-09-01 07:38:51,089 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-09-01 07:38:51,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.27272727272728) internal successors, (2203), 11 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:38:51,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-09-01 07:38:51,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-09-01 07:38:51,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-09-01 07:38:51,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 07:38:51,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 07:38:51,298 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:38:51,302 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:38:51,302 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:38:51,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:38:51 BasicIcfg [2023-09-01 07:38:51,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:38:51,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:38:51,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:38:51,306 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:38:51,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:38:28" (3/4) ... [2023-09-01 07:38:51,307 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:38:51,311 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:38:51,311 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:38:51,316 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-09-01 07:38:51,316 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:38:51,316 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:38:51,316 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:38:51,354 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:38:51,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:38:51,354 INFO L158 Benchmark]: Toolchain (without parser) took 23351.34ms. Allocated memory was 67.1MB in the beginning and 4.5GB in the end (delta: 4.5GB). Free memory was 45.2MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-09-01 07:38:51,354 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 32.6MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:38:51,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.39ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 33.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 07:38:51,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.65ms. Allocated memory is still 67.1MB. Free memory was 33.1MB in the beginning and 31.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:38:51,355 INFO L158 Benchmark]: Boogie Preprocessor took 70.35ms. Allocated memory is still 67.1MB. Free memory was 31.3MB in the beginning and 47.3MB in the end (delta: -16.0MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-09-01 07:38:51,355 INFO L158 Benchmark]: RCFGBuilder took 504.59ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 45.9MB in the end (delta: 1.4MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2023-09-01 07:38:51,355 INFO L158 Benchmark]: TraceAbstraction took 22419.77ms. Allocated memory was 67.1MB in the beginning and 4.5GB in the end (delta: 4.5GB). Free memory was 45.3MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-09-01 07:38:51,355 INFO L158 Benchmark]: Witness Printer took 48.31ms. Allocated memory is still 4.5GB. Free memory was 3.1GB in the beginning and 3.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:38:51,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 32.6MB in the end (delta: 85.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.39ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 33.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.65ms. Allocated memory is still 67.1MB. Free memory was 33.1MB in the beginning and 31.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.35ms. Allocated memory is still 67.1MB. Free memory was 31.3MB in the beginning and 47.3MB in the end (delta: -16.0MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * RCFGBuilder took 504.59ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 45.9MB in the end (delta: 1.4MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * TraceAbstraction took 22419.77ms. Allocated memory was 67.1MB in the beginning and 4.5GB in the end (delta: 4.5GB). Free memory was 45.3MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 48.31ms. Allocated memory is still 4.5GB. Free memory was 3.1GB in the beginning and 3.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 194 PlacesBefore, 36 PlacesAfterwards, 205 TransitionsBefore, 36 TransitionsAfterwards, 4028 CoEnabledTransitionPairs, 8 FixpointIterations, 110 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 12 ConcurrentYvCompositions, 11 ChoiceCompositions, 225 TotalNumberOfCompositions, 5000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4175, independent: 4076, independent conditional: 0, independent unconditional: 4076, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2251, independent: 2234, independent conditional: 0, independent unconditional: 2234, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4175, independent: 1842, independent conditional: 0, independent unconditional: 1842, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 2251, unknown conditional: 0, unknown unconditional: 2251] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: 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 5 procedures, 285 locations, 22 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: 22.3s, OverallIterations: 18, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3712 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2899 mSDsluCounter, 1387 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1149 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6513 IncrementalHoareTripleChecker+Invalid, 6665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 238 mSDtfsCounter, 6513 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=460occurred in iteration=7, InterpolantAutomatonStates: 100, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 231 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 849 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1466 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 33 InterpolantComputations, 13 PerfectInterpolantSequences, 122/241 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! [2023-09-01 07:38:51,379 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