./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.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/popl20-bad-buffer-mult-alt2.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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --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 07:56:04,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:56:04,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:56:04,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:56:04,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:56:04,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:56:04,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:56:04,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:56:04,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:56:04,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:56:04,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:56:04,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:56:04,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:56:04,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:56:04,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:56:04,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:56:04,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:56:04,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:56:04,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:56:04,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:56:04,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:56:04,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:56:04,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:56:04,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:56:04,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:56:04,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:56:04,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:56:04,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:56:04,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:56:04,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:56:04,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:56:04,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:56:04,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:56:04,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:56:04,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:56:04,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:56:04,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:56:04,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:56:04,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:56:04,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:56:04,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:56:04,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:56:04,421 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:56:04,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:56:04,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:56:04,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:56:04,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:56:04,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:56:04,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:56:04,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:56:04,425 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:56:04,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:56:04,426 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:56:04,426 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:56:04,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:56:04,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:56:04,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:56:04,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:56:04,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:56:04,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:56:04,427 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:56:04,427 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:56:04,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:56:04,428 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:56:04,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:56:04,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:56:04,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:56:04,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:56:04,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:56:04,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:56:04,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:56:04,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:56:04,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:56:04,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:56:04,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:56:04,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:56:04,431 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:56:04,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:56:04,431 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:56:04,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:56:04,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:56:04,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:56:04,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:56:04,741 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:56:04,741 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:56:04,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-09-01 07:56:05,805 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:56:06,004 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:56:06,004 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-09-01 07:56:06,013 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb17b14e9/f7d7a5bebb024740bc90097d4a7f8364/FLAG26548b51e [2023-09-01 07:56:06,028 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb17b14e9/f7d7a5bebb024740bc90097d4a7f8364 [2023-09-01 07:56:06,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:56:06,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:56:06,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:56:06,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:56:06,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:56:06,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea6b4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06, skipping insertion in model container [2023-09-01 07:56:06,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:56:06,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:56:06,245 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2023-09-01 07:56:06,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:56:06,259 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:56:06,283 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2023-09-01 07:56:06,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:56:06,309 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:56:06,310 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:56:06,316 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:56:06,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06 WrapperNode [2023-09-01 07:56:06,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:56:06,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:56:06,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:56:06,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:56:06,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,386 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 372 [2023-09-01 07:56:06,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:56:06,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:56:06,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:56:06,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:56:06,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:56:06,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:56:06,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:56:06,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:56:06,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (1/1) ... [2023-09-01 07:56:06,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:56:06,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:56:06,494 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 07:56:06,501 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 07:56:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:56:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:56:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:56:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:56:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:56:06,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:56:06,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:56:06,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:56:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:56:06,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:56:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 07:56:06,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 07:56:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:56:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:56:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:56:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:56:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:56:06,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:56:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:56:06,526 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 07:56:06,665 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:56:06,667 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:56:07,180 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:56:07,555 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:56:07,556 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 07:56:07,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:56:07 BoogieIcfgContainer [2023-09-01 07:56:07,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:56:07,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:56:07,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:56:07,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:56:07,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:56:06" (1/3) ... [2023-09-01 07:56:07,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f765e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:56:07, skipping insertion in model container [2023-09-01 07:56:07,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:56:06" (2/3) ... [2023-09-01 07:56:07,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f765e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:56:07, skipping insertion in model container [2023-09-01 07:56:07,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:56:07" (3/3) ... [2023-09-01 07:56:07,571 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-09-01 07:56:07,576 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:56:07,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:56:07,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-09-01 07:56:07,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:56:07,724 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 07:56:07,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 269 transitions, 570 flow [2023-09-01 07:56:07,799 INFO L130 PetriNetUnfolder]: 19/265 cut-off events. [2023-09-01 07:56:07,799 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 07:56:07,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 265 events. 19/265 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 222. Up to 2 conditions per place. [2023-09-01 07:56:07,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 269 transitions, 570 flow [2023-09-01 07:56:07,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 245 transitions, 511 flow [2023-09-01 07:56:07,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:56:07,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 245 transitions, 511 flow [2023-09-01 07:56:07,816 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 245 transitions, 511 flow [2023-09-01 07:56:07,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 245 transitions, 511 flow [2023-09-01 07:56:07,880 INFO L130 PetriNetUnfolder]: 18/245 cut-off events. [2023-09-01 07:56:07,880 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:56:07,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 245 events. 18/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 222. Up to 2 conditions per place. [2023-09-01 07:56:07,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-09-01 07:56:21,338 INFO L134 LiptonReduction]: Checked pairs total: 7140 [2023-09-01 07:56:21,338 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-09-01 07:56:21,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:56:21,353 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;@15395019, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:56:21,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-09-01 07:56:21,355 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:56:21,355 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:56:21,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:21,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:56:21,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:56:21,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash 45269, now seen corresponding path program 1 times [2023-09-01 07:56:21,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:21,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515382282] [2023-09-01 07:56:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:21,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:21,591 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 07:56:21,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:21,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515382282] [2023-09-01 07:56:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515382282] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:56:21,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:56:21,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:56:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75568675] [2023-09-01 07:56:21,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:56:21,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:56:21,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:56:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:56:21,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-09-01 07:56:21,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 07:56:21,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:21,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-09-01 07:56:21,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:56:28,967 INFO L130 PetriNetUnfolder]: 73043/90293 cut-off events. [2023-09-01 07:56:28,967 INFO L131 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2023-09-01 07:56:29,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181775 conditions, 90293 events. 73043/90293 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 7849. Compared 511281 event pairs, 46499 based on Foata normal form. 0/24442 useless extension candidates. Maximal degree in co-relation 80316. Up to 44280 conditions per place. [2023-09-01 07:56:29,511 INFO L137 encePairwiseOnDemand]: 499/515 looper letters, 89 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-09-01 07:56:29,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2023-09-01 07:56:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:56:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:56:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-09-01 07:56:29,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284789644012943 [2023-09-01 07:56:29,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-09-01 07:56:29,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-09-01 07:56:29,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:56:29,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-09-01 07:56:29,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 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 07:56:29,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:56:29,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:56:29,542 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 746 transitions. [2023-09-01 07:56:29,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2023-09-01 07:56:30,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 07:56:30,245 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 154 flow [2023-09-01 07:56:30,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-09-01 07:56:30,251 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-09-01 07:56:30,252 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 154 flow [2023-09-01 07:56:30,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 07:56:30,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:30,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:56:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:56:30,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:56:30,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1405146, now seen corresponding path program 1 times [2023-09-01 07:56:30,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:30,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170699984] [2023-09-01 07:56:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:30,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:30,312 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 07:56:30,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170699984] [2023-09-01 07:56:30,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170699984] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:56:30,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:56:30,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:56:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581039059] [2023-09-01 07:56:30,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:56:30,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:56:30,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:56:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:56:30,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-09-01 07:56:30,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 07:56:30,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:30,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-09-01 07:56:30,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:56:36,904 INFO L130 PetriNetUnfolder]: 73055/90303 cut-off events. [2023-09-01 07:56:36,904 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:56:37,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180529 conditions, 90303 events. 73055/90303 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7849. Compared 511586 event pairs, 46500 based on Foata normal form. 0/24399 useless extension candidates. Maximal degree in co-relation 90253. Up to 88563 conditions per place. [2023-09-01 07:56:37,359 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-09-01 07:56:37,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 246 flow [2023-09-01 07:56:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:56:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:56:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-09-01 07:56:37,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414239482200647 [2023-09-01 07:56:37,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-09-01 07:56:37,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-09-01 07:56:37,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:56:37,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-09-01 07:56:37,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 07:56:37,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:56:37,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:56:37,369 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 154 flow. Second operand 3 states and 682 transitions. [2023-09-01 07:56:37,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 246 flow [2023-09-01 07:56:37,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:56:37,371 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 140 flow [2023-09-01 07:56:37,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-09-01 07:56:37,373 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-09-01 07:56:37,373 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 140 flow [2023-09-01 07:56:37,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 07:56:37,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:37,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:56:37,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:56:37,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:56:37,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1405147, now seen corresponding path program 1 times [2023-09-01 07:56:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047412044] [2023-09-01 07:56:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:37,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:37,465 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 07:56:37,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047412044] [2023-09-01 07:56:37,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047412044] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:56:37,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707644269] [2023-09-01 07:56:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:37,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:56:37,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:56:37,474 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 07:56:37,477 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 07:56:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:37,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:56:37,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:56:37,667 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 07:56:37,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:56:37,705 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 07:56:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707644269] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:56:37,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:56:37,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:56:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616374517] [2023-09-01 07:56:37,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:56:37,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:56:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:56:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:56:37,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-09-01 07:56:37,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 07:56:37,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:37,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-09-01 07:56:37,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:56:54,035 INFO L130 PetriNetUnfolder]: 182588/225705 cut-off events. [2023-09-01 07:56:54,035 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:56:54,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451194 conditions, 225705 events. 182588/225705 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15676. Compared 1376380 event pairs, 116246 based on Foata normal form. 0/61179 useless extension candidates. Maximal degree in co-relation 451186. Up to 44283 conditions per place. [2023-09-01 07:56:55,281 INFO L137 encePairwiseOnDemand]: 509/515 looper letters, 210 selfloop transitions, 13 changer transitions 0/229 dead transitions. [2023-09-01 07:56:55,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 229 transitions, 982 flow [2023-09-01 07:56:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:56:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:56:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1495 transitions. [2023-09-01 07:56:55,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48381877022653724 [2023-09-01 07:56:55,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1495 transitions. [2023-09-01 07:56:55,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1495 transitions. [2023-09-01 07:56:55,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:56:55,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1495 transitions. [2023-09-01 07:56:55,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.16666666666666) internal successors, (1495), 6 states have internal predecessors, (1495), 0 states have call successors, (0), 0 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 07:56:55,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 515.0) internal successors, (3605), 7 states have internal predecessors, (3605), 0 states have call successors, (0), 0 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 07:56:55,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 515.0) internal successors, (3605), 7 states have internal predecessors, (3605), 0 states have call successors, (0), 0 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 07:56:55,297 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 140 flow. Second operand 6 states and 1495 transitions. [2023-09-01 07:56:55,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 229 transitions, 982 flow [2023-09-01 07:56:55,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 229 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:56:55,300 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 232 flow [2023-09-01 07:56:55,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-09-01 07:56:55,301 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-09-01 07:56:55,301 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 232 flow [2023-09-01 07:56:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 07:56:55,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:55,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:56:55,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:56:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:56:55,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:56:55,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1060974717, now seen corresponding path program 1 times [2023-09-01 07:56:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:55,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399364574] [2023-09-01 07:56:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:55,554 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 07:56:55,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:55,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399364574] [2023-09-01 07:56:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399364574] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:56:55,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:56:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:56:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572461203] [2023-09-01 07:56:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:56:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:56:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:56:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:56:55,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 515 [2023-09-01 07:56:55,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 232 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 07:56:55,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:55,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 515 [2023-09-01 07:56:55,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:57:17,035 INFO L130 PetriNetUnfolder]: 223431/283013 cut-off events. [2023-09-01 07:57:17,035 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:57:17,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569387 conditions, 283013 events. 223431/283013 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21055. Compared 1937459 event pairs, 62540 based on Foata normal form. 0/79766 useless extension candidates. Maximal degree in co-relation 569375. Up to 175196 conditions per place. [2023-09-01 07:57:18,551 INFO L137 encePairwiseOnDemand]: 511/515 looper letters, 94 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-09-01 07:57:18,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 505 flow [2023-09-01 07:57:18,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:57:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:57:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-09-01 07:57:18,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47508090614886733 [2023-09-01 07:57:18,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-09-01 07:57:18,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-09-01 07:57:18,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:57:18,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-09-01 07:57:18,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 07:57:18,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:57:18,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:57:18,559 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 232 flow. Second operand 3 states and 734 transitions. [2023-09-01 07:57:18,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 505 flow [2023-09-01 07:57:18,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 486 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:57:18,563 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 227 flow [2023-09-01 07:57:18,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-09-01 07:57:18,564 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-09-01 07:57:18,565 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 227 flow [2023-09-01 07:57:18,565 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 07:57:18,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:57:18,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:57:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:57:18,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:57:18,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:57:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1060974719, now seen corresponding path program 1 times [2023-09-01 07:57:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:57:18,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050563829] [2023-09-01 07:57:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:57:18,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:57:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:57:18,683 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 07:57:18,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:57:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050563829] [2023-09-01 07:57:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050563829] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:57:18,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:57:18,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:57:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729147726] [2023-09-01 07:57:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:57:18,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:57:18,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:57:18,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:57:18,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:57:18,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 515 [2023-09-01 07:57:18,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 07:57:18,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:57:18,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 515 [2023-09-01 07:57:18,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:57:42,313 INFO L130 PetriNetUnfolder]: 238731/304949 cut-off events. [2023-09-01 07:57:42,314 INFO L131 PetriNetUnfolder]: For 13219/13219 co-relation queries the response was YES. [2023-09-01 07:57:43,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638875 conditions, 304949 events. 238731/304949 cut-off events. For 13219/13219 co-relation queries the response was YES. Maximal size of possible extension queue 21685. Compared 2131972 event pairs, 176460 based on Foata normal form. 1520/105583 useless extension candidates. Maximal degree in co-relation 638861. Up to 280687 conditions per place. [2023-09-01 07:57:44,008 INFO L137 encePairwiseOnDemand]: 504/515 looper letters, 94 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-09-01 07:57:44,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 103 transitions, 530 flow [2023-09-01 07:57:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:57:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:57:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 918 transitions. [2023-09-01 07:57:44,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44563106796116503 [2023-09-01 07:57:44,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 918 transitions. [2023-09-01 07:57:44,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 918 transitions. [2023-09-01 07:57:44,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:57:44,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 918 transitions. [2023-09-01 07:57:44,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.5) internal successors, (918), 4 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:44,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 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 07:57:44,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 515.0) internal successors, (2575), 5 states have internal predecessors, (2575), 0 states have call successors, (0), 0 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 07:57:44,029 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 227 flow. Second operand 4 states and 918 transitions. [2023-09-01 07:57:44,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 103 transitions, 530 flow [2023-09-01 07:57:44,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:57:44,041 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 248 flow [2023-09-01 07:57:44,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-09-01 07:57:44,044 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-09-01 07:57:44,044 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 248 flow [2023-09-01 07:57:44,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 07:57:44,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:57:44,044 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:57:44,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:57:44,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:57:44,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:57:44,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1087174122, now seen corresponding path program 2 times [2023-09-01 07:57:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:57:44,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045350029] [2023-09-01 07:57:44,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:57:44,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:57:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:57:44,119 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 07:57:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:57:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045350029] [2023-09-01 07:57:44,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045350029] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:57:44,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892422048] [2023-09-01 07:57:44,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:57:44,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:57:44,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:57:44,124 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 07:57:44,126 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 07:57:44,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:57:44,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:57:44,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:57:44,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:57:44,288 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 07:57:44,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:57:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892422048] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:57:44,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:57:44,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:57:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226704237] [2023-09-01 07:57:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:57:44,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:57:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:57:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:57:44,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:57:44,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 515 [2023-09-01 07:57:44,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:44,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:57:44,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 515 [2023-09-01 07:57:44,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:58:08,319 INFO L130 PetriNetUnfolder]: 238721/304858 cut-off events. [2023-09-01 07:58:08,319 INFO L131 PetriNetUnfolder]: For 41309/41309 co-relation queries the response was YES. [2023-09-01 07:58:09,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693753 conditions, 304858 events. 238721/304858 cut-off events. For 41309/41309 co-relation queries the response was YES. Maximal size of possible extension queue 21482. Compared 2130980 event pairs, 176470 based on Foata normal form. 1/122143 useless extension candidates. Maximal degree in co-relation 693737. Up to 298813 conditions per place. [2023-09-01 07:58:10,144 INFO L137 encePairwiseOnDemand]: 512/515 looper letters, 53 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2023-09-01 07:58:10,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 356 flow [2023-09-01 07:58:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:58:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:58:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 686 transitions. [2023-09-01 07:58:10,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44401294498381877 [2023-09-01 07:58:10,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 686 transitions. [2023-09-01 07:58:10,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 686 transitions. [2023-09-01 07:58:10,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:58:10,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 686 transitions. [2023-09-01 07:58:10,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 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 07:58:10,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:58:10,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 515.0) internal successors, (2060), 4 states have internal predecessors, (2060), 0 states have call successors, (0), 0 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 07:58:10,150 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 248 flow. Second operand 3 states and 686 transitions. [2023-09-01 07:58:10,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 356 flow [2023-09-01 07:58:10,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 350 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 07:58:10,165 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 244 flow [2023-09-01 07:58:10,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=515, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2023-09-01 07:58:10,166 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-09-01 07:58:10,166 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 244 flow [2023-09-01 07:58:10,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:58:10,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:58:10,167 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:58:10,172 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 07:58:10,372 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,SelfDestructingSolverStorable5 [2023-09-01 07:58:10,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:58:10,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:58:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1466593027, now seen corresponding path program 1 times [2023-09-01 07:58:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:58:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020846520] [2023-09-01 07:58:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:58:10,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:58:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:58:10,460 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 07:58:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:58:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020846520] [2023-09-01 07:58:10,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020846520] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:58:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070340565] [2023-09-01 07:58:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:58:10,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:58:10,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:58:10,461 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 07:58:10,463 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 07:58:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:58:10,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:58:10,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:58:10,612 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 07:58:10,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:58:10,663 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 07:58:10,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070340565] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:58:10,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:58:10,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:58:10,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42341487] [2023-09-01 07:58:10,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:58:10,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:58:10,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:58:10,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:58:10,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:58:10,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 515 [2023-09-01 07:58:10,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 244 flow. Second operand has 13 states, 13 states have (on average 212.15384615384616) internal successors, (2758), 13 states have internal predecessors, (2758), 0 states have call successors, (0), 0 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 07:58:10,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:58:10,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 515 [2023-09-01 07:58:10,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand