./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-commit-2.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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:31:03,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:31:03,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:31:03,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:31:03,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:31:03,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:31:03,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:31:03,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:31:03,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:31:03,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:31:03,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:31:03,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:31:03,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:31:03,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:31:03,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:31:03,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:31:03,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:31:03,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:31:03,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:31:03,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:31:03,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:31:03,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:31:03,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:31:03,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:31:03,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:31:03,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:31:03,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:31:03,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:31:03,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:31:03,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:31:03,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:31:03,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:31:03,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:31:03,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:31:03,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:31:03,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:31:03,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:31:03,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:31:03,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:31:03,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:31:03,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:31:03,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:31:03,537 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:31:03,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:31:03,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:31:03,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:31:03,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:31:03,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:31:03,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:31:03,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:31:03,540 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:31:03,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:31:03,541 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:31:03,541 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:31:03,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:31:03,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:31:03,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:31:03,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:31:03,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:31:03,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:31:03,542 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:31:03,542 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:31:03,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:31:03,543 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:31:03,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:31:03,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:31:03,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:31:03,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:31:03,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:31:03,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:31:03,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:31:03,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:31:03,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:31:03,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:31:03,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:31:03,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:31:03,545 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:31:03,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:31:03,545 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:31:03,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:31:03,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:31:03,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:31:03,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:31:03,801 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:31:03,802 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:31:03,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-30 11:31:04,784 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:31:05,008 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:31:05,009 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-30 11:31:05,042 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5771f6201/d7cbbc61596c4774bc08ebc2e4fe36da/FLAG61d88111a [2023-08-30 11:31:05,051 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5771f6201/d7cbbc61596c4774bc08ebc2e4fe36da [2023-08-30 11:31:05,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:31:05,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:31:05,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:31:05,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:31:05,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:31:05,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22390a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05, skipping insertion in model container [2023-08-30 11:31:05,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:31:05,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:31:05,212 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-commit-2.wvr.c[5846,5859] [2023-08-30 11:31:05,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:31:05,231 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:31:05,265 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-commit-2.wvr.c[5846,5859] [2023-08-30 11:31:05,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:31:05,284 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:31:05,285 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:31:05,289 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:31:05,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05 WrapperNode [2023-08-30 11:31:05,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:31:05,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:31:05,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:31:05,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:31:05,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,357 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 506 [2023-08-30 11:31:05,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:31:05,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:31:05,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:31:05,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:31:05,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:31:05,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:31:05,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:31:05,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:31:05,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (1/1) ... [2023-08-30 11:31:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:31:05,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:05,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:31:05,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:31:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:31:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:31:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:31:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:31:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:31:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:31:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:31:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:31:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:31:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:31:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:31:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:31:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:31:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:31:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:31:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:31:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:31:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:31:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:31:05,579 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:31:05,736 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:31:05,738 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:31:06,145 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:31:06,362 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:31:06,362 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-30 11:31:06,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:31:06 BoogieIcfgContainer [2023-08-30 11:31:06,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:31:06,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:31:06,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:31:06,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:31:06,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:31:05" (1/3) ... [2023-08-30 11:31:06,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7804a091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:31:06, skipping insertion in model container [2023-08-30 11:31:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:31:05" (2/3) ... [2023-08-30 11:31:06,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7804a091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:31:06, skipping insertion in model container [2023-08-30 11:31:06,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:31:06" (3/3) ... [2023-08-30 11:31:06,372 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-08-30 11:31:06,377 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:31:06,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:31:06,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 11:31:06,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:31:06,509 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:31:06,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 359 transitions, 750 flow [2023-08-30 11:31:06,615 INFO L130 PetriNetUnfolder]: 25/355 cut-off events. [2023-08-30 11:31:06,618 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:31:06,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 355 events. 25/355 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 333 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 314. Up to 2 conditions per place. [2023-08-30 11:31:06,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 359 transitions, 750 flow [2023-08-30 11:31:06,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 335 transitions, 691 flow [2023-08-30 11:31:06,636 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:31:06,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 335 transitions, 691 flow [2023-08-30 11:31:06,658 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 335 transitions, 691 flow [2023-08-30 11:31:06,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 335 transitions, 691 flow [2023-08-30 11:31:06,706 INFO L130 PetriNetUnfolder]: 24/335 cut-off events. [2023-08-30 11:31:06,706 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:31:06,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 335 events. 24/335 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 332 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 314. Up to 2 conditions per place. [2023-08-30 11:31:06,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-08-30 11:31:17,087 INFO L134 LiptonReduction]: Checked pairs total: 20033 [2023-08-30 11:31:17,087 INFO L136 LiptonReduction]: Total number of compositions: 341 [2023-08-30 11:31:17,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:31:17,108 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;@418ada4f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:31:17,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 11:31:17,112 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:31:17,112 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:31:17,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:17,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:31:17,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:31:17,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash 58818, now seen corresponding path program 1 times [2023-08-30 11:31:17,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:17,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810539030] [2023-08-30 11:31:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:17,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:17,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810539030] [2023-08-30 11:31:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810539030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:31:17,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458329645] [2023-08-30 11:31:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:17,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:17,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:17,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 700 [2023-08-30 11:31:17,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:17,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:17,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 700 [2023-08-30 11:31:17,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:21,152 INFO L130 PetriNetUnfolder]: 28951/37701 cut-off events. [2023-08-30 11:31:21,152 INFO L131 PetriNetUnfolder]: For 1324/1324 co-relation queries the response was YES. [2023-08-30 11:31:21,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77334 conditions, 37701 events. 28951/37701 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 188071 event pairs, 23504 based on Foata normal form. 0/18869 useless extension candidates. Maximal degree in co-relation 36140. Up to 18856 conditions per place. [2023-08-30 11:31:21,318 INFO L137 encePairwiseOnDemand]: 672/700 looper letters, 101 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2023-08-30 11:31:21,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 478 flow [2023-08-30 11:31:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2023-08-30 11:31:21,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742857142857143 [2023-08-30 11:31:21,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 996 transitions. [2023-08-30 11:31:21,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 996 transitions. [2023-08-30 11:31:21,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:21,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 996 transitions. [2023-08-30 11:31:21,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,351 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 163 flow. Second operand 3 states and 996 transitions. [2023-08-30 11:31:21,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 478 flow [2023-08-30 11:31:21,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 452 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:31:21,430 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 202 flow [2023-08-30 11:31:21,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2023-08-30 11:31:21,435 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-08-30 11:31:21,435 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 202 flow [2023-08-30 11:31:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:21,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:31:21,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:31:21,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:31:21,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:21,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1825694, now seen corresponding path program 1 times [2023-08-30 11:31:21,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:21,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896657324] [2023-08-30 11:31:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:21,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896657324] [2023-08-30 11:31:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896657324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:21,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:21,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:31:21,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275199403] [2023-08-30 11:31:21,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:21,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:21,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:21,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 700 [2023-08-30 11:31:21,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:21,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:21,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 700 [2023-08-30 11:31:21,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:24,671 INFO L130 PetriNetUnfolder]: 28951/37697 cut-off events. [2023-08-30 11:31:24,671 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 11:31:24,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76883 conditions, 37697 events. 28951/37697 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 189074 event pairs, 23504 based on Foata normal form. 0/18877 useless extension candidates. Maximal degree in co-relation 38416. Up to 37697 conditions per place. [2023-08-30 11:31:24,868 INFO L137 encePairwiseOnDemand]: 695/700 looper letters, 61 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 11:31:24,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 310 flow [2023-08-30 11:31:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2023-08-30 11:31:24,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43523809523809526 [2023-08-30 11:31:24,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2023-08-30 11:31:24,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2023-08-30 11:31:24,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:24,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2023-08-30 11:31:24,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,879 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 202 flow. Second operand 3 states and 914 transitions. [2023-08-30 11:31:24,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 310 flow [2023-08-30 11:31:24,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:24,881 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 172 flow [2023-08-30 11:31:24,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-08-30 11:31:24,882 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2023-08-30 11:31:24,882 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 172 flow [2023-08-30 11:31:24,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:24,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:24,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:31:24,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:31:24,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:31:24,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1825714, now seen corresponding path program 1 times [2023-08-30 11:31:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520606492] [2023-08-30 11:31:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:24,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:24,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520606492] [2023-08-30 11:31:24,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520606492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:24,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679049405] [2023-08-30 11:31:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:24,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:24,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:24,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:24,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:31:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:25,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:31:25,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:25,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:31:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:25,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679049405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:31:25,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:31:25,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:31:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558057196] [2023-08-30 11:31:25,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:31:25,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:31:25,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:31:25,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:31:25,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 700 [2023-08-30 11:31:25,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:25,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:25,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 700 [2023-08-30 11:31:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:32,837 INFO L130 PetriNetUnfolder]: 72376/94235 cut-off events. [2023-08-30 11:31:32,838 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2023-08-30 11:31:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192160 conditions, 94235 events. 72376/94235 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 2962. Compared 518531 event pairs, 58760 based on Foata normal form. 0/47176 useless extension candidates. Maximal degree in co-relation 192152. Up to 18855 conditions per place. [2023-08-30 11:31:33,201 INFO L137 encePairwiseOnDemand]: 688/700 looper letters, 226 selfloop transitions, 29 changer transitions 0/255 dead transitions. [2023-08-30 11:31:33,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 255 transitions, 1142 flow [2023-08-30 11:31:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:31:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:31:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1977 transitions. [2023-08-30 11:31:33,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707142857142857 [2023-08-30 11:31:33,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1977 transitions. [2023-08-30 11:31:33,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1977 transitions. [2023-08-30 11:31:33,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:33,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1977 transitions. [2023-08-30 11:31:33,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,215 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,216 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 172 flow. Second operand 6 states and 1977 transitions. [2023-08-30 11:31:33,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 255 transitions, 1142 flow [2023-08-30 11:31:33,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 255 transitions, 1141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:33,219 INFO L231 Difference]: Finished difference. Result has 64 places, 83 transitions, 378 flow [2023-08-30 11:31:33,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=64, PETRI_TRANSITIONS=83} [2023-08-30 11:31:33,219 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2023-08-30 11:31:33,220 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 378 flow [2023-08-30 11:31:33,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:33,221 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:31:33,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:31:33,425 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 [2023-08-30 11:31:33,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:31:33,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1443005226, now seen corresponding path program 2 times [2023-08-30 11:31:33,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:33,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260568083] [2023-08-30 11:31:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:33,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:33,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260568083] [2023-08-30 11:31:33,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260568083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682572581] [2023-08-30 11:31:33,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:31:33,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:33,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:33,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:33,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:31:33,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:31:33,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:31:33,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:31:33,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:31:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:31:33,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:31:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682572581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:33,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:31:33,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:31:33,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119426795] [2023-08-30 11:31:33,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:33,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:33,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:33,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:31:33,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 700 [2023-08-30 11:31:33,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 83 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:33,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:33,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 700 [2023-08-30 11:31:33,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:41,410 INFO L130 PetriNetUnfolder]: 72376/94231 cut-off events. [2023-08-30 11:31:41,410 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2023-08-30 11:31:41,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192205 conditions, 94231 events. 72376/94231 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 524498 event pairs, 58760 based on Foata normal form. 4/47189 useless extension candidates. Maximal degree in co-relation 192193. Up to 94231 conditions per place. [2023-08-30 11:31:41,792 INFO L137 encePairwiseOnDemand]: 695/700 looper letters, 78 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 11:31:41,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 496 flow [2023-08-30 11:31:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 922 transitions. [2023-08-30 11:31:41,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439047619047619 [2023-08-30 11:31:41,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 922 transitions. [2023-08-30 11:31:41,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 922 transitions. [2023-08-30 11:31:41,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:41,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 922 transitions. [2023-08-30 11:31:41,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:41,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:41,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:41,800 INFO L175 Difference]: Start difference. First operand has 64 places, 83 transitions, 378 flow. Second operand 3 states and 922 transitions. [2023-08-30 11:31:41,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 496 flow [2023-08-30 11:31:41,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 397 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-08-30 11:31:41,802 INFO L231 Difference]: Finished difference. Result has 57 places, 79 transitions, 241 flow [2023-08-30 11:31:41,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=57, PETRI_TRANSITIONS=79} [2023-08-30 11:31:41,803 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2023-08-30 11:31:41,803 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 79 transitions, 241 flow [2023-08-30 11:31:41,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:41,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:41,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:41,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:31:42,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:31:42,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:31:42,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:42,009 INFO L85 PathProgramCache]: Analyzing trace with hash -514213803, now seen corresponding path program 1 times [2023-08-30 11:31:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:42,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563928155] [2023-08-30 11:31:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:42,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563928155] [2023-08-30 11:31:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563928155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:42,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:42,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:31:42,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251854853] [2023-08-30 11:31:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:42,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:42,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:42,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:42,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 700 [2023-08-30 11:31:42,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 79 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:42,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:42,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 700 [2023-08-30 11:31:42,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:49,831 INFO L130 PetriNetUnfolder]: 80736/105511 cut-off events. [2023-08-30 11:31:49,831 INFO L131 PetriNetUnfolder]: For 935/935 co-relation queries the response was YES. [2023-08-30 11:31:49,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215204 conditions, 105511 events. 80736/105511 cut-off events. For 935/935 co-relation queries the response was YES. Maximal size of possible extension queue 3453. Compared 618073 event pairs, 18085 based on Foata normal form. 0/53456 useless extension candidates. Maximal degree in co-relation 215195. Up to 95886 conditions per place. [2023-08-30 11:31:50,291 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 100 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2023-08-30 11:31:50,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 505 flow [2023-08-30 11:31:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-08-30 11:31:50,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45285714285714285 [2023-08-30 11:31:50,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-08-30 11:31:50,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-08-30 11:31:50,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:50,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-08-30 11:31:50,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:50,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:50,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:50,299 INFO L175 Difference]: Start difference. First operand has 57 places, 79 transitions, 241 flow. Second operand 3 states and 951 transitions. [2023-08-30 11:31:50,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 505 flow [2023-08-30 11:31:50,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:50,301 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 268 flow [2023-08-30 11:31:50,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2023-08-30 11:31:50,302 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -17 predicate places. [2023-08-30 11:31:50,302 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 268 flow [2023-08-30 11:31:50,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:50,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:50,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:50,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:31:50,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:31:50,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash -238139130, now seen corresponding path program 1 times [2023-08-30 11:31:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:50,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689250427] [2023-08-30 11:31:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:50,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:50,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689250427] [2023-08-30 11:31:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689250427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:50,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:31:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584243004] [2023-08-30 11:31:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:50,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:50,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 700 [2023-08-30 11:31:50,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:50,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:50,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 700 [2023-08-30 11:31:50,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:58,877 INFO L130 PetriNetUnfolder]: 84526/110741 cut-off events. [2023-08-30 11:31:58,877 INFO L131 PetriNetUnfolder]: For 11880/11880 co-relation queries the response was YES. [2023-08-30 11:31:59,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244251 conditions, 110741 events. 84526/110741 cut-off events. For 11880/11880 co-relation queries the response was YES. Maximal size of possible extension queue 3079. Compared 628334 event pairs, 22465 based on Foata normal form. 0/73026 useless extension candidates. Maximal degree in co-relation 244240. Up to 92576 conditions per place. [2023-08-30 11:31:59,416 INFO L137 encePairwiseOnDemand]: 696/700 looper letters, 104 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 11:31:59,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 538 flow [2023-08-30 11:31:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 957 transitions. [2023-08-30 11:31:59,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45571428571428574 [2023-08-30 11:31:59,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 957 transitions. [2023-08-30 11:31:59,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 957 transitions. [2023-08-30 11:31:59,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:59,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 957 transitions. [2023-08-30 11:31:59,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:59,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:59,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:59,427 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 268 flow. Second operand 3 states and 957 transitions. [2023-08-30 11:31:59,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 538 flow [2023-08-30 11:31:59,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:59,444 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 274 flow [2023-08-30 11:31:59,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2023-08-30 11:31:59,446 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-08-30 11:31:59,446 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 274 flow [2023-08-30 11:31:59,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:59,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:59,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:59,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:31:59,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:31:59,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1218340356, now seen corresponding path program 1 times [2023-08-30 11:31:59,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653461785] [2023-08-30 11:31:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:59,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:59,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653461785] [2023-08-30 11:31:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653461785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:59,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:31:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598595218] [2023-08-30 11:31:59,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:59,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:59,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:59,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 700 [2023-08-30 11:31:59,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:59,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:59,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 700 [2023-08-30 11:31:59,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:06,612 INFO L130 PetriNetUnfolder]: 68306/89071 cut-off events. [2023-08-30 11:32:06,613 INFO L131 PetriNetUnfolder]: For 12490/12490 co-relation queries the response was YES. [2023-08-30 11:32:06,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201683 conditions, 89071 events. 68306/89071 cut-off events. For 12490/12490 co-relation queries the response was YES. Maximal size of possible extension queue 2709. Compared 488034 event pairs, 15845 based on Foata normal form. 0/63096 useless extension candidates. Maximal degree in co-relation 201670. Up to 79476 conditions per place. [2023-08-30 11:32:06,997 INFO L137 encePairwiseOnDemand]: 696/700 looper letters, 103 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-30 11:32:06,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 543 flow [2023-08-30 11:32:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 957 transitions. [2023-08-30 11:32:07,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45571428571428574 [2023-08-30 11:32:07,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 957 transitions. [2023-08-30 11:32:07,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 957 transitions. [2023-08-30 11:32:07,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:07,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 957 transitions. [2023-08-30 11:32:07,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:07,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:07,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:07,010 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 274 flow. Second operand 3 states and 957 transitions. [2023-08-30 11:32:07,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 543 flow [2023-08-30 11:32:07,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:32:07,013 INFO L231 Difference]: Finished difference. Result has 63 places, 82 transitions, 282 flow [2023-08-30 11:32:07,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=63, PETRI_TRANSITIONS=82} [2023-08-30 11:32:07,013 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-08-30 11:32:07,013 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 82 transitions, 282 flow [2023-08-30 11:32:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:07,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:07,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:07,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:32:07,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:07,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:07,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1701068514, now seen corresponding path program 1 times [2023-08-30 11:32:07,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532629648] [2023-08-30 11:32:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:32:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532629648] [2023-08-30 11:32:07,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532629648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:07,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:07,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:32:07,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933248354] [2023-08-30 11:32:07,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:32:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:07,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:32:07,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:32:07,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-08-30 11:32:07,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 82 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:07,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:07,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-08-30 11:32:07,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:14,853 INFO L130 PetriNetUnfolder]: 68901/90126 cut-off events. [2023-08-30 11:32:14,853 INFO L131 PetriNetUnfolder]: For 16800/16800 co-relation queries the response was YES. [2023-08-30 11:32:15,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213085 conditions, 90126 events. 68901/90126 cut-off events. For 16800/16800 co-relation queries the response was YES. Maximal size of possible extension queue 2739. Compared 510788 event pairs, 56345 based on Foata normal form. 150/69591 useless extension candidates. Maximal degree in co-relation 213070. Up to 89070 conditions per place. [2023-08-30 11:32:15,342 INFO L137 encePairwiseOnDemand]: 695/700 looper letters, 79 selfloop transitions, 2 changer transitions 45/126 dead transitions. [2023-08-30 11:32:15,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 126 transitions, 680 flow [2023-08-30 11:32:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:32:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:32:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1195 transitions. [2023-08-30 11:32:15,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42678571428571427 [2023-08-30 11:32:15,344 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1195 transitions. [2023-08-30 11:32:15,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1195 transitions. [2023-08-30 11:32:15,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:15,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1195 transitions. [2023-08-30 11:32:15,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.75) internal successors, (1195), 4 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:15,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:15,349 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:15,349 INFO L175 Difference]: Start difference. First operand has 63 places, 82 transitions, 282 flow. Second operand 4 states and 1195 transitions. [2023-08-30 11:32:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 126 transitions, 680 flow [2023-08-30 11:32:15,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 126 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:32:15,356 INFO L231 Difference]: Finished difference. Result has 66 places, 81 transitions, 284 flow [2023-08-30 11:32:15,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=66, PETRI_TRANSITIONS=81} [2023-08-30 11:32:15,357 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-08-30 11:32:15,357 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 81 transitions, 284 flow [2023-08-30 11:32:15,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:15,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:15,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:15,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:32:15,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:15,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash -789035130, now seen corresponding path program 1 times [2023-08-30 11:32:15,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387727265] [2023-08-30 11:32:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:32:15,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:15,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387727265] [2023-08-30 11:32:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387727265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:32:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110689432] [2023-08-30 11:32:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:15,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:32:15,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:32:15,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:32:15,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:32:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:15,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:32:15,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:32:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:32:15,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:32:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110689432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:15,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:32:15,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:32:15,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439063018] [2023-08-30 11:32:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:15,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:32:15,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:15,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:32:15,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:32:15,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-08-30 11:32:15,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 81 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:15,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:15,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-08-30 11:32:15,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:18,971 INFO L130 PetriNetUnfolder]: 29430/38695 cut-off events. [2023-08-30 11:32:18,971 INFO L131 PetriNetUnfolder]: For 11360/11360 co-relation queries the response was YES. [2023-08-30 11:32:19,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93775 conditions, 38695 events. 29430/38695 cut-off events. For 11360/11360 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 198539 event pairs, 22855 based on Foata normal form. 6070/38191 useless extension candidates. Maximal degree in co-relation 93758. Up to 38695 conditions per place. [2023-08-30 11:32:19,129 INFO L137 encePairwiseOnDemand]: 693/700 looper letters, 74 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-08-30 11:32:19,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 418 flow [2023-08-30 11:32:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 936 transitions. [2023-08-30 11:32:19,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2023-08-30 11:32:19,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 936 transitions. [2023-08-30 11:32:19,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 936 transitions. [2023-08-30 11:32:19,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:19,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 936 transitions. [2023-08-30 11:32:19,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:19,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:19,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:19,135 INFO L175 Difference]: Start difference. First operand has 66 places, 81 transitions, 284 flow. Second operand 3 states and 936 transitions. [2023-08-30 11:32:19,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 418 flow [2023-08-30 11:32:19,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:32:19,137 INFO L231 Difference]: Finished difference. Result has 59 places, 75 transitions, 264 flow [2023-08-30 11:32:19,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=59, PETRI_TRANSITIONS=75} [2023-08-30 11:32:19,138 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -17 predicate places. [2023-08-30 11:32:19,138 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 75 transitions, 264 flow [2023-08-30 11:32:19,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:19,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:19,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:19,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:32:19,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:32:19,343 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:19,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:19,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1309716233, now seen corresponding path program 1 times [2023-08-30 11:32:19,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:19,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790742275] [2023-08-30 11:32:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:19,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:32:19,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790742275] [2023-08-30 11:32:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790742275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:19,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:19,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:32:19,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822911416] [2023-08-30 11:32:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:32:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:19,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:32:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:32:19,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 700 [2023-08-30 11:32:19,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 75 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:19,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:19,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 700 [2023-08-30 11:32:19,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:22,554 INFO L130 PetriNetUnfolder]: 27640/36375 cut-off events. [2023-08-30 11:32:22,554 INFO L131 PetriNetUnfolder]: For 9540/9540 co-relation queries the response was YES. [2023-08-30 11:32:22,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88713 conditions, 36375 events. 27640/36375 cut-off events. For 9540/9540 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 179958 event pairs, 7375 based on Foata normal form. 1030/30861 useless extension candidates. Maximal degree in co-relation 88696. Up to 32081 conditions per place. [2023-08-30 11:32:22,674 INFO L137 encePairwiseOnDemand]: 696/700 looper letters, 89 selfloop transitions, 2 changer transitions 8/99 dead transitions. [2023-08-30 11:32:22,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 527 flow [2023-08-30 11:32:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2023-08-30 11:32:22,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45095238095238094 [2023-08-30 11:32:22,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2023-08-30 11:32:22,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2023-08-30 11:32:22,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:22,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2023-08-30 11:32:22,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:22,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:22,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:22,681 INFO L175 Difference]: Start difference. First operand has 59 places, 75 transitions, 264 flow. Second operand 3 states and 947 transitions. [2023-08-30 11:32:22,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 527 flow [2023-08-30 11:32:22,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 99 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:32:22,683 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 277 flow [2023-08-30 11:32:22,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2023-08-30 11:32:22,683 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-08-30 11:32:22,683 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 277 flow [2023-08-30 11:32:22,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:22,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:22,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:22,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:32:22,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:22,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1946506401, now seen corresponding path program 1 times [2023-08-30 11:32:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490251804] [2023-08-30 11:32:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:32:22,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:22,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490251804] [2023-08-30 11:32:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490251804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:22,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:22,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:32:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189435916] [2023-08-30 11:32:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:32:22,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:32:22,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:32:22,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-08-30 11:32:22,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:22,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:22,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-08-30 11:32:22,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:26,053 INFO L130 PetriNetUnfolder]: 28565/37940 cut-off events. [2023-08-30 11:32:26,054 INFO L131 PetriNetUnfolder]: For 11515/11515 co-relation queries the response was YES. [2023-08-30 11:32:26,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96735 conditions, 37940 events. 28565/37940 cut-off events. For 11515/11515 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 196888 event pairs, 22180 based on Foata normal form. 80/32276 useless extension candidates. Maximal degree in co-relation 96716. Up to 36355 conditions per place. [2023-08-30 11:32:26,224 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 68 selfloop transitions, 7 changer transitions 27/102 dead transitions. [2023-08-30 11:32:26,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 555 flow [2023-08-30 11:32:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:32:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:32:26,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2023-08-30 11:32:26,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42392857142857143 [2023-08-30 11:32:26,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2023-08-30 11:32:26,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2023-08-30 11:32:26,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:26,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2023-08-30 11:32:26,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:26,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:26,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:26,232 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 277 flow. Second operand 4 states and 1187 transitions. [2023-08-30 11:32:26,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 555 flow [2023-08-30 11:32:26,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:32:26,234 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 295 flow [2023-08-30 11:32:26,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-08-30 11:32:26,235 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2023-08-30 11:32:26,235 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 295 flow [2023-08-30 11:32:26,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:26,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:26,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:32:26,236 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:26,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1289467166, now seen corresponding path program 1 times [2023-08-30 11:32:26,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:26,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789452591] [2023-08-30 11:32:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:26,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:32:26,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789452591] [2023-08-30 11:32:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789452591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:32:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350533172] [2023-08-30 11:32:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:26,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:32:26,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:32:26,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:32:26,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:32:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:26,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:32:26,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:32:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:32:26,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:32:26,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350533172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:26,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:32:26,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-30 11:32:26,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943488509] [2023-08-30 11:32:26,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:26,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:32:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:32:26,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:32:26,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-08-30 11:32:26,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:26,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:26,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-08-30 11:32:26,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:28,582 INFO L130 PetriNetUnfolder]: 19339/25594 cut-off events. [2023-08-30 11:32:28,582 INFO L131 PetriNetUnfolder]: For 9245/9245 co-relation queries the response was YES. [2023-08-30 11:32:28,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65165 conditions, 25594 events. 19339/25594 cut-off events. For 9245/9245 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 125068 event pairs, 14435 based on Foata normal form. 520/23496 useless extension candidates. Maximal degree in co-relation 65144. Up to 25594 conditions per place. [2023-08-30 11:32:28,665 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 72 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-30 11:32:28,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 433 flow [2023-08-30 11:32:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 930 transitions. [2023-08-30 11:32:28,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2023-08-30 11:32:28,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 930 transitions. [2023-08-30 11:32:28,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 930 transitions. [2023-08-30 11:32:28,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:28,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 930 transitions. [2023-08-30 11:32:28,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:28,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:28,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:28,671 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 295 flow. Second operand 3 states and 930 transitions. [2023-08-30 11:32:28,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 433 flow [2023-08-30 11:32:28,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 415 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 11:32:28,676 INFO L231 Difference]: Finished difference. Result has 61 places, 73 transitions, 271 flow [2023-08-30 11:32:28,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=61, PETRI_TRANSITIONS=73} [2023-08-30 11:32:28,677 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-08-30 11:32:28,677 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 73 transitions, 271 flow [2023-08-30 11:32:28,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:28,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:28,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:28,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:32:28,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:32:28,882 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:28,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1318775046, now seen corresponding path program 1 times [2023-08-30 11:32:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539337720] [2023-08-30 11:32:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:32:28,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539337720] [2023-08-30 11:32:28,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539337720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:28,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:28,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:32:28,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530880052] [2023-08-30 11:32:28,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:28,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:32:28,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:28,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:32:28,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:32:29,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-08-30 11:32:29,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:29,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:29,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-08-30 11:32:29,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:30,728 INFO L130 PetriNetUnfolder]: 15679/20826 cut-off events. [2023-08-30 11:32:30,728 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-30 11:32:30,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52883 conditions, 20826 events. 15679/20826 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 99197 event pairs, 11749 based on Foata normal form. 24/18749 useless extension candidates. Maximal degree in co-relation 52863. Up to 20454 conditions per place. [2023-08-30 11:32:30,802 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 67 selfloop transitions, 6 changer transitions 24/97 dead transitions. [2023-08-30 11:32:30,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 97 transitions, 531 flow [2023-08-30 11:32:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:32:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:32:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1465 transitions. [2023-08-30 11:32:30,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185714285714286 [2023-08-30 11:32:30,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1465 transitions. [2023-08-30 11:32:30,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1465 transitions. [2023-08-30 11:32:30,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:30,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1465 transitions. [2023-08-30 11:32:30,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:30,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 700.0) internal successors, (4200), 6 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:30,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 700.0) internal successors, (4200), 6 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:30,811 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 271 flow. Second operand 5 states and 1465 transitions. [2023-08-30 11:32:30,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 97 transitions, 531 flow [2023-08-30 11:32:30,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:32:30,813 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 293 flow [2023-08-30 11:32:30,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-08-30 11:32:30,814 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-08-30 11:32:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 293 flow [2023-08-30 11:32:30,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:30,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:30,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:30,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:32:30,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:30,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1829678869, now seen corresponding path program 1 times [2023-08-30 11:32:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364330971] [2023-08-30 11:32:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:30,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:32:30,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364330971] [2023-08-30 11:32:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364330971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:32:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452152881] [2023-08-30 11:32:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:30,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:32:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:32:30,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:32:30,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:32:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:31,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:32:31,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:32:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:32:31,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:32:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452152881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:31,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:32:31,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-30 11:32:31,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995997692] [2023-08-30 11:32:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:31,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:32:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:32:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:32:31,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-08-30 11:32:31,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:31,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:31,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-08-30 11:32:31,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:32,271 INFO L130 PetriNetUnfolder]: 10754/14338 cut-off events. [2023-08-30 11:32:32,271 INFO L131 PetriNetUnfolder]: For 5386/5386 co-relation queries the response was YES. [2023-08-30 11:32:32,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36315 conditions, 14338 events. 10754/14338 cut-off events. For 5386/5386 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 64581 event pairs, 7804 based on Foata normal form. 336/13985 useless extension candidates. Maximal degree in co-relation 36292. Up to 14338 conditions per place. [2023-08-30 11:32:32,310 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 11:32:32,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 427 flow [2023-08-30 11:32:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 928 transitions. [2023-08-30 11:32:32,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2023-08-30 11:32:32,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 928 transitions. [2023-08-30 11:32:32,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 928 transitions. [2023-08-30 11:32:32,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:32,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 928 transitions. [2023-08-30 11:32:32,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:32,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:32,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:32,316 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 293 flow. Second operand 3 states and 928 transitions. [2023-08-30 11:32:32,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 427 flow [2023-08-30 11:32:32,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 416 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 11:32:32,319 INFO L231 Difference]: Finished difference. Result has 62 places, 71 transitions, 276 flow [2023-08-30 11:32:32,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=62, PETRI_TRANSITIONS=71} [2023-08-30 11:32:32,319 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2023-08-30 11:32:32,319 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 71 transitions, 276 flow [2023-08-30 11:32:32,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:32,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:32,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:32,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:32:32,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 11:32:32,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:32,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash 534661869, now seen corresponding path program 1 times [2023-08-30 11:32:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872394033] [2023-08-30 11:32:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:32,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:32:32,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872394033] [2023-08-30 11:32:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872394033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:32,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:32:32,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:32:32,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460727997] [2023-08-30 11:32:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:32,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:32:32,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:32:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:32:32,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-08-30 11:32:32,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 71 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:32,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:32,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-08-30 11:32:32,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:33,915 INFO L130 PetriNetUnfolder]: 12094/16460 cut-off events. [2023-08-30 11:32:33,915 INFO L131 PetriNetUnfolder]: For 5646/5646 co-relation queries the response was YES. [2023-08-30 11:32:33,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41173 conditions, 16460 events. 12094/16460 cut-off events. For 5646/5646 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 77781 event pairs, 8980 based on Foata normal form. 144/15915 useless extension candidates. Maximal degree in co-relation 41151. Up to 14328 conditions per place. [2023-08-30 11:32:33,981 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 64 selfloop transitions, 6 changer transitions 44/114 dead transitions. [2023-08-30 11:32:33,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 114 transitions, 651 flow [2023-08-30 11:32:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:32:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:32:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1193 transitions. [2023-08-30 11:32:33,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42607142857142855 [2023-08-30 11:32:33,983 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1193 transitions. [2023-08-30 11:32:33,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1193 transitions. [2023-08-30 11:32:33,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:33,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1193 transitions. [2023-08-30 11:32:33,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:33,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:33,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:33,987 INFO L175 Difference]: Start difference. First operand has 62 places, 71 transitions, 276 flow. Second operand 4 states and 1193 transitions. [2023-08-30 11:32:33,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 114 transitions, 651 flow [2023-08-30 11:32:33,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:32:33,990 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 291 flow [2023-08-30 11:32:33,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-08-30 11:32:33,991 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -11 predicate places. [2023-08-30 11:32:33,991 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 291 flow [2023-08-30 11:32:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:33,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:32:33,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 11:32:33,991 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 11:32:33,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:32:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1046507037, now seen corresponding path program 1 times [2023-08-30 11:32:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:32:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308917369] [2023-08-30 11:32:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:32:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:32:34,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:32:34,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308917369] [2023-08-30 11:32:34,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308917369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:32:34,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287772112] [2023-08-30 11:32:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:32:34,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:32:34,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:32:34,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:32:34,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:32:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:32:34,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:32:34,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:32:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 11:32:34,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:32:34,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287772112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:32:34,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:32:34,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-30 11:32:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802908628] [2023-08-30 11:32:34,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:32:34,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:32:34,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:32:34,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:32:34,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:32:34,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-08-30 11:32:34,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:34,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:32:34,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-08-30 11:32:34,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:32:35,171 INFO L130 PetriNetUnfolder]: 7529/10145 cut-off events. [2023-08-30 11:32:35,171 INFO L131 PetriNetUnfolder]: For 3810/3810 co-relation queries the response was YES. [2023-08-30 11:32:35,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25583 conditions, 10145 events. 7529/10145 cut-off events. For 3810/3810 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 44068 event pairs, 5356 based on Foata normal form. 288/10429 useless extension candidates. Maximal degree in co-relation 25559. Up to 10145 conditions per place. [2023-08-30 11:32:35,198 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2023-08-30 11:32:35,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 419 flow [2023-08-30 11:32:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:32:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:32:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 926 transitions. [2023-08-30 11:32:35,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44095238095238093 [2023-08-30 11:32:35,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 926 transitions. [2023-08-30 11:32:35,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 926 transitions. [2023-08-30 11:32:35,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:32:35,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 926 transitions. [2023-08-30 11:32:35,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:35,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:35,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:35,205 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 291 flow. Second operand 3 states and 926 transitions. [2023-08-30 11:32:35,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 419 flow [2023-08-30 11:32:35,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 386 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 11:32:35,210 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-08-30 11:32:35,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-08-30 11:32:35,210 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-08-30 11:32:35,210 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-08-30 11:32:35,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:32:35,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2023-08-30 11:32:35,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2023-08-30 11:32:35,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2023-08-30 11:32:35,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2023-08-30 11:32:35,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2023-08-30 11:32:35,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2023-08-30 11:32:35,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2023-08-30 11:32:35,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2023-08-30 11:32:35,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2023-08-30 11:32:35,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2023-08-30 11:32:35,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2023-08-30 11:32:35,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2023-08-30 11:32:35,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2023-08-30 11:32:35,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2023-08-30 11:32:35,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2023-08-30 11:32:35,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2023-08-30 11:32:35,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:32:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 11:32:35,425 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:32:35,430 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:32:35,430 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:32:35,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:32:35 BasicIcfg [2023-08-30 11:32:35,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:32:35,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:32:35,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:32:35,434 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:32:35,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:31:06" (3/4) ... [2023-08-30 11:32:35,436 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:32:35,439 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:32:35,440 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:32:35,440 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:32:35,440 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-08-30 11:32:35,451 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2023-08-30 11:32:35,451 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:32:35,451 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:32:35,452 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:32:35,503 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:32:35,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:32:35,503 INFO L158 Benchmark]: Toolchain (without parser) took 90448.94ms. Allocated memory was 88.1MB in the beginning and 14.2GB in the end (delta: 14.1GB). Free memory was 64.8MB in the beginning and 10.2GB in the end (delta: -10.2GB). Peak memory consumption was 4.0GB. Max. memory is 16.1GB. [2023-08-30 11:32:35,504 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:32:35,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.08ms. Allocated memory is still 88.1MB. Free memory was 64.8MB in the beginning and 50.7MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 11:32:35,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.16ms. Allocated memory is still 88.1MB. Free memory was 50.7MB in the beginning and 47.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:32:35,504 INFO L158 Benchmark]: Boogie Preprocessor took 58.45ms. Allocated memory is still 88.1MB. Free memory was 47.2MB in the beginning and 44.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:32:35,504 INFO L158 Benchmark]: RCFGBuilder took 942.68ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 44.4MB in the beginning and 60.5MB in the end (delta: -16.1MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-08-30 11:32:35,505 INFO L158 Benchmark]: TraceAbstraction took 89066.98ms. Allocated memory was 111.1MB in the beginning and 14.2GB in the end (delta: 14.1GB). Free memory was 59.8MB in the beginning and 10.2GB in the end (delta: -10.2GB). Peak memory consumption was 5.4GB. Max. memory is 16.1GB. [2023-08-30 11:32:35,505 INFO L158 Benchmark]: Witness Printer took 68.90ms. Allocated memory is still 14.2GB. Free memory was 10.2GB in the beginning and 10.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 11:32:35,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.08ms. Allocated memory is still 88.1MB. Free memory was 64.8MB in the beginning and 50.7MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.16ms. Allocated memory is still 88.1MB. Free memory was 50.7MB in the beginning and 47.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.45ms. Allocated memory is still 88.1MB. Free memory was 47.2MB in the beginning and 44.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 942.68ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 44.4MB in the beginning and 60.5MB in the end (delta: -16.1MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 89066.98ms. Allocated memory was 111.1MB in the beginning and 14.2GB in the end (delta: 14.1GB). Free memory was 59.8MB in the beginning and 10.2GB in the end (delta: -10.2GB). Peak memory consumption was 5.4GB. Max. memory is 16.1GB. * Witness Printer took 68.90ms. Allocated memory is still 14.2GB. Free memory was 10.2GB in the beginning and 10.2GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.4s, 324 PlacesBefore, 76 PlacesAfterwards, 335 TransitionsBefore, 71 TransitionsAfterwards, 5712 CoEnabledTransitionPairs, 7 FixpointIterations, 221 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 37 TrivialYvCompositions, 15 ConcurrentYvCompositions, 16 ChoiceCompositions, 341 TotalNumberOfCompositions, 20033 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8813, independent: 8432, independent conditional: 0, independent unconditional: 8432, dependent: 381, dependent conditional: 0, dependent unconditional: 381, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2877, independent: 2819, independent conditional: 0, independent unconditional: 2819, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8813, independent: 5613, independent conditional: 0, independent unconditional: 5613, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 2877, unknown conditional: 0, unknown unconditional: 2877] , Statistics on independence cache: Total cache size (in pairs): 465, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: 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 9 procedures, 403 locations, 60 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: 88.9s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 74.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1666 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1109 mSDsluCounter, 354 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2292 IncrementalHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 206 mSDtfsCounter, 2292 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=378occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 280 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1882 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 34/51 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 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:32:35,535 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