./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:39:38,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:39:38,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:39:38,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:39:38,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:39:38,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:39:38,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:39:38,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:39:38,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:39:38,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:39:38,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:39:38,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:39:38,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:39:38,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:39:38,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:39:38,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:39:38,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:39:38,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:39:38,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:39:38,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:39:38,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:39:38,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:39:38,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:39:38,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:39:38,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:39:38,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:39:38,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:39:38,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:39:38,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:39:38,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:39:38,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:39:38,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:39:38,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:39:38,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:39:38,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:39:38,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:39:38,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:39:38,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:39:38,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:39:38,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:39:38,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:39:38,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:39:38,463 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:39:38,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:39:38,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:39:38,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:39:38,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:39:38,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:39:38,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:39:38,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:39:38,467 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:39:38,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:39:38,468 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:39:38,468 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:39:38,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:39:38,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:39:38,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:39:38,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:39:38,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:39:38,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:39:38,470 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:39:38,470 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:39:38,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:39:38,470 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:39:38,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:39:38,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:39:38,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:39:38,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:39:38,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:39:38,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:39:38,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:39:38,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:39:38,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:39:38,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:39:38,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:39:38,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:39:38,473 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:39:38,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:39:38,473 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:39:38,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:39:38,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:39:38,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:39:38,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:39:38,856 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:39:38,857 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:39:38,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-08-30 15:39:39,897 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:39:40,100 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:39:40,101 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-08-30 15:39:40,107 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbf76df6/e220230aeaae4945b4e0a693a8d2aa1f/FLAGebdcda9e0 [2023-08-30 15:39:40,120 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbf76df6/e220230aeaae4945b4e0a693a8d2aa1f [2023-08-30 15:39:40,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:39:40,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:39:40,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:39:40,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:39:40,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:39:40,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa1706c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40, skipping insertion in model container [2023-08-30 15:39:40,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:39:40,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:39:40,280 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-more-dec-subseq.wvr.c[2924,2937] [2023-08-30 15:39:40,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:39:40,293 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:39:40,331 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-more-dec-subseq.wvr.c[2924,2937] [2023-08-30 15:39:40,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:39:40,349 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:39:40,350 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:39:40,356 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:39:40,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40 WrapperNode [2023-08-30 15:39:40,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:39:40,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:39:40,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:39:40,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:39:40,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,420 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 206 [2023-08-30 15:39:40,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:39:40,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:39:40,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:39:40,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:39:40,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:39:40,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:39:40,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:39:40,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:39:40,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (1/1) ... [2023-08-30 15:39:40,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:39:40,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:40,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:39:40,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:39:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:39:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:39:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:39:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:39:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:39:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:39:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:39:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:39:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:39:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:39:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:39:40,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:39:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:39:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:39:40,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:39:40,563 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:39:40,686 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:39:40,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:39:41,048 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:39:41,167 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:39:41,167 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:39:41,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:39:41 BoogieIcfgContainer [2023-08-30 15:39:41,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:39:41,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:39:41,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:39:41,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:39:41,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:39:40" (1/3) ... [2023-08-30 15:39:41,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4368f42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:39:41, skipping insertion in model container [2023-08-30 15:39:41,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:39:40" (2/3) ... [2023-08-30 15:39:41,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4368f42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:39:41, skipping insertion in model container [2023-08-30 15:39:41,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:39:41" (3/3) ... [2023-08-30 15:39:41,179 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-08-30 15:39:41,186 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:39:41,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:39:41,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 15:39:41,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:39:41,293 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:39:41,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 15:39:41,433 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2023-08-30 15:39:41,434 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:39:41,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-08-30 15:39:41,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 15:39:41,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 172 transitions, 353 flow [2023-08-30 15:39:41,448 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:39:41,459 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 172 transitions, 353 flow [2023-08-30 15:39:41,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 172 transitions, 353 flow [2023-08-30 15:39:41,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 353 flow [2023-08-30 15:39:41,492 INFO L130 PetriNetUnfolder]: 14/172 cut-off events. [2023-08-30 15:39:41,492 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:39:41,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 172 events. 14/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-08-30 15:39:41,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 942 [2023-08-30 15:39:46,736 INFO L134 LiptonReduction]: Checked pairs total: 1454 [2023-08-30 15:39:46,737 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-30 15:39:46,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:39:46,755 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;@79803f71, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:39:46,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 15:39:46,759 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:39:46,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:39:46,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:46,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:39:46,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:46,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash 25153, now seen corresponding path program 1 times [2023-08-30 15:39:46,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:46,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198014555] [2023-08-30 15:39:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:46,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:47,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:47,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198014555] [2023-08-30 15:39:47,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198014555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:47,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:47,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:39:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991312217] [2023-08-30 15:39:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:47,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 15:39:47,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:47,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 15:39:47,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:47,199 INFO L130 PetriNetUnfolder]: 177/288 cut-off events. [2023-08-30 15:39:47,199 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 15:39:47,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 288 events. 177/288 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1087 event pairs, 106 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 524. Up to 284 conditions per place. [2023-08-30 15:39:47,205 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 25 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 15:39:47,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 115 flow [2023-08-30 15:39:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-30 15:39:47,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2023-08-30 15:39:47,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-30 15:39:47,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-30 15:39:47,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:47,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-30 15:39:47,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,248 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 71 flow. Second operand 3 states and 510 transitions. [2023-08-30 15:39:47,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 115 flow [2023-08-30 15:39:47,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:39:47,253 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 60 flow [2023-08-30 15:39:47,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-30 15:39:47,258 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-30 15:39:47,260 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 60 flow [2023-08-30 15:39:47,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:47,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:39:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:39:47,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:47,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:47,273 INFO L85 PathProgramCache]: Analyzing trace with hash 25172, now seen corresponding path program 1 times [2023-08-30 15:39:47,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:47,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730577457] [2023-08-30 15:39:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:47,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:47,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:47,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730577457] [2023-08-30 15:39:47,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730577457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:47,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:47,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:39:47,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506737431] [2023-08-30 15:39:47,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:47,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:47,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:47,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:47,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 15:39:47,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:47,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 15:39:47,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:47,538 INFO L130 PetriNetUnfolder]: 353/573 cut-off events. [2023-08-30 15:39:47,539 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:39:47,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 573 events. 353/573 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 2585 event pairs, 212 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1170. Up to 285 conditions per place. [2023-08-30 15:39:47,542 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 45 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-30 15:39:47,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 50 transitions, 208 flow [2023-08-30 15:39:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-30 15:39:47,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2023-08-30 15:39:47,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-30 15:39:47,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-30 15:39:47,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:47,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-30 15:39:47,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,550 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 60 flow. Second operand 3 states and 531 transitions. [2023-08-30 15:39:47,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 50 transitions, 208 flow [2023-08-30 15:39:47,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 50 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:47,552 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 91 flow [2023-08-30 15:39:47,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-08-30 15:39:47,553 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-08-30 15:39:47,553 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 91 flow [2023-08-30 15:39:47,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:47,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:39:47,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:39:47,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:47,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash 781045, now seen corresponding path program 1 times [2023-08-30 15:39:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354498497] [2023-08-30 15:39:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:47,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354498497] [2023-08-30 15:39:47,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354498497] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801323263] [2023-08-30 15:39:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:47,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:47,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:47,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:39:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:47,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:39:47,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:47,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:39:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801323263] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:39:47,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:39:47,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 15:39:47,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574951143] [2023-08-30 15:39:47,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:39:47,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:39:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:39:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:39:47,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 15:39:47,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:47,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:47,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 15:39:47,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:48,166 INFO L130 PetriNetUnfolder]: 881/1428 cut-off events. [2023-08-30 15:39:48,167 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 15:39:48,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2951 conditions, 1428 events. 881/1428 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7443 event pairs, 530 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 2942. Up to 285 conditions per place. [2023-08-30 15:39:48,181 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 105 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2023-08-30 15:39:48,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 119 transitions, 545 flow [2023-08-30 15:39:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:39:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:39:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1084 transitions. [2023-08-30 15:39:48,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882882882882883 [2023-08-30 15:39:48,188 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1084 transitions. [2023-08-30 15:39:48,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1084 transitions. [2023-08-30 15:39:48,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:48,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1084 transitions. [2023-08-30 15:39:48,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,196 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,196 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 91 flow. Second operand 6 states and 1084 transitions. [2023-08-30 15:39:48,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 119 transitions, 545 flow [2023-08-30 15:39:48,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 119 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:39:48,199 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 176 flow [2023-08-30 15:39:48,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-08-30 15:39:48,200 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 15:39:48,200 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 176 flow [2023-08-30 15:39:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:48,201 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:39:48,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:39:48,407 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 15:39:48,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:48,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1793983124, now seen corresponding path program 2 times [2023-08-30 15:39:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:48,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369901781] [2023-08-30 15:39:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:48,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:48,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369901781] [2023-08-30 15:39:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369901781] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542952379] [2023-08-30 15:39:48,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:39:48,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:48,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:48,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:48,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:39:48,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:39:48,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:39:48,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:39:48,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:39:48,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:39:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542952379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:48,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:39:48,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:39:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495754743] [2023-08-30 15:39:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:39:48,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 370 [2023-08-30 15:39:48,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:48,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 370 [2023-08-30 15:39:48,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:48,827 INFO L130 PetriNetUnfolder]: 881/1427 cut-off events. [2023-08-30 15:39:48,827 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 15:39:48,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 1427 events. 881/1427 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7680 event pairs, 530 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 2959. Up to 1402 conditions per place. [2023-08-30 15:39:48,834 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 31 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-30 15:39:48,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 240 flow [2023-08-30 15:39:48,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-30 15:39:48,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46126126126126127 [2023-08-30 15:39:48,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-30 15:39:48,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-30 15:39:48,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:48,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-30 15:39:48,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,841 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 176 flow. Second operand 3 states and 512 transitions. [2023-08-30 15:39:48,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 240 flow [2023-08-30 15:39:48,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 221 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:48,847 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 159 flow [2023-08-30 15:39:48,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-08-30 15:39:48,848 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 15:39:48,848 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 159 flow [2023-08-30 15:39:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:48,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:48,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:39:48,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:49,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 15:39:49,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:49,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1806151333, now seen corresponding path program 1 times [2023-08-30 15:39:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:49,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012667808] [2023-08-30 15:39:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:49,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:49,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012667808] [2023-08-30 15:39:49,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012667808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:49,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:49,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:39:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120465753] [2023-08-30 15:39:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:49,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:49,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 370 [2023-08-30 15:39:49,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:49,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 370 [2023-08-30 15:39:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:49,415 INFO L130 PetriNetUnfolder]: 1651/2607 cut-off events. [2023-08-30 15:39:49,415 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 15:39:49,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 2607 events. 1651/2607 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 15194 event pairs, 425 based on Foata normal form. 0/1532 useless extension candidates. Maximal degree in co-relation 5374. Up to 1556 conditions per place. [2023-08-30 15:39:49,428 INFO L137 encePairwiseOnDemand]: 366/370 looper letters, 51 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 15:39:49,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 300 flow [2023-08-30 15:39:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-30 15:39:49,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846846846846847 [2023-08-30 15:39:49,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-30 15:39:49,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-30 15:39:49,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:49,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-30 15:39:49,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,436 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 159 flow. Second operand 3 states and 538 transitions. [2023-08-30 15:39:49,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 300 flow [2023-08-30 15:39:49,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:39:49,438 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 161 flow [2023-08-30 15:39:49,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-08-30 15:39:49,439 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-30 15:39:49,439 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 161 flow [2023-08-30 15:39:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:49,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:39:49,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:39:49,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:49,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:49,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1806148252, now seen corresponding path program 1 times [2023-08-30 15:39:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:49,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407193117] [2023-08-30 15:39:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:49,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407193117] [2023-08-30 15:39:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407193117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:49,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:39:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814117372] [2023-08-30 15:39:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:49,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:39:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:39:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:39:49,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 370 [2023-08-30 15:39:49,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:49,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 370 [2023-08-30 15:39:49,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:49,902 INFO L130 PetriNetUnfolder]: 1976/3303 cut-off events. [2023-08-30 15:39:49,903 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 15:39:49,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7314 conditions, 3303 events. 1976/3303 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 21524 event pairs, 1320 based on Foata normal form. 60/2097 useless extension candidates. Maximal degree in co-relation 7300. Up to 2586 conditions per place. [2023-08-30 15:39:49,922 INFO L137 encePairwiseOnDemand]: 363/370 looper letters, 52 selfloop transitions, 3 changer transitions 4/60 dead transitions. [2023-08-30 15:39:49,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 361 flow [2023-08-30 15:39:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:39:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:39:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2023-08-30 15:39:49,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2023-08-30 15:39:49,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2023-08-30 15:39:49,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2023-08-30 15:39:49,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:49,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2023-08-30 15:39:49,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,930 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,930 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 161 flow. Second operand 4 states and 655 transitions. [2023-08-30 15:39:49,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 361 flow [2023-08-30 15:39:49,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:49,932 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 174 flow [2023-08-30 15:39:49,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 15:39:49,933 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-30 15:39:49,933 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 174 flow [2023-08-30 15:39:49,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:49,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:49,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:49,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:39:49,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:49,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash -208932163, now seen corresponding path program 1 times [2023-08-30 15:39:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:49,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118492605] [2023-08-30 15:39:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:49,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:50,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:50,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118492605] [2023-08-30 15:39:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118492605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:50,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688681046] [2023-08-30 15:39:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:50,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:50,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:50,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:50,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:39:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:50,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:39:50,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:50,146 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 15:39:50,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:39:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688681046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:50,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:39:50,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:39:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877657222] [2023-08-30 15:39:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:50,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:39:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:50,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:39:50,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:39:50,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 370 [2023-08-30 15:39:50,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:50,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:50,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 370 [2023-08-30 15:39:50,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:50,495 INFO L130 PetriNetUnfolder]: 1474/2467 cut-off events. [2023-08-30 15:39:50,495 INFO L131 PetriNetUnfolder]: For 270/294 co-relation queries the response was YES. [2023-08-30 15:39:50,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 2467 events. 1474/2467 cut-off events. For 270/294 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 15347 event pairs, 972 based on Foata normal form. 2/1772 useless extension candidates. Maximal degree in co-relation 5976. Up to 2430 conditions per place. [2023-08-30 15:39:50,509 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-30 15:39:50,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 244 flow [2023-08-30 15:39:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:39:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:39:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-08-30 15:39:50,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43445945945945946 [2023-08-30 15:39:50,512 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-08-30 15:39:50,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-08-30 15:39:50,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:50,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-08-30 15:39:50,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:50,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:50,518 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:50,518 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 174 flow. Second operand 4 states and 643 transitions. [2023-08-30 15:39:50,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 244 flow [2023-08-30 15:39:50,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 238 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:50,522 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 186 flow [2023-08-30 15:39:50,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-30 15:39:50,523 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-30 15:39:50,523 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 186 flow [2023-08-30 15:39:50,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:50,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:50,523 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:39:50,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:50,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:50,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:50,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash 157761778, now seen corresponding path program 1 times [2023-08-30 15:39:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552988710] [2023-08-30 15:39:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:50,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:50,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552988710] [2023-08-30 15:39:50,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552988710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738774474] [2023-08-30 15:39:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:50,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:50,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:50,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:39:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:50,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:39:50,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:50,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:39:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738774474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:39:50,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:39:50,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:39:50,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729361996] [2023-08-30 15:39:50,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:39:50,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:39:50,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:39:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:39:51,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 15:39:51,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:51,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:51,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 15:39:51,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:51,870 INFO L130 PetriNetUnfolder]: 3682/6157 cut-off events. [2023-08-30 15:39:51,870 INFO L131 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2023-08-30 15:39:51,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 6157 events. 3682/6157 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 41294 event pairs, 2430 based on Foata normal form. 12/4496 useless extension candidates. Maximal degree in co-relation 14924. Up to 1581 conditions per place. [2023-08-30 15:39:51,911 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 204 selfloop transitions, 31 changer transitions 0/236 dead transitions. [2023-08-30 15:39:51,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 1316 flow [2023-08-30 15:39:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:39:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:39:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2151 transitions. [2023-08-30 15:39:51,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48445945945945945 [2023-08-30 15:39:51,917 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2151 transitions. [2023-08-30 15:39:51,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2151 transitions. [2023-08-30 15:39:51,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:51,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2151 transitions. [2023-08-30 15:39:51,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.25) internal successors, (2151), 12 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:51,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:51,930 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:51,931 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 186 flow. Second operand 12 states and 2151 transitions. [2023-08-30 15:39:51,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 236 transitions, 1316 flow [2023-08-30 15:39:51,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 236 transitions, 1287 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 15:39:51,938 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 385 flow [2023-08-30 15:39:51,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=385, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-30 15:39:51,940 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 15:39:51,940 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 385 flow [2023-08-30 15:39:51,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:51,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:51,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:51,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:52,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:52,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:52,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2114722249, now seen corresponding path program 1 times [2023-08-30 15:39:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189765342] [2023-08-30 15:39:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:52,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:52,233 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 15:39:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189765342] [2023-08-30 15:39:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189765342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:52,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460776923] [2023-08-30 15:39:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:52,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:52,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:52,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:52,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:39:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:52,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:39:52,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:52,364 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 15:39:52,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:39:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460776923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:39:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:39:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697047481] [2023-08-30 15:39:52,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:52,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:39:52,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-08-30 15:39:52,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:52,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:52,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-08-30 15:39:52,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:52,821 INFO L130 PetriNetUnfolder]: 2642/4617 cut-off events. [2023-08-30 15:39:52,822 INFO L131 PetriNetUnfolder]: For 598/598 co-relation queries the response was YES. [2023-08-30 15:39:52,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 4617 events. 2642/4617 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31286 event pairs, 1790 based on Foata normal form. 0/3807 useless extension candidates. Maximal degree in co-relation 10899. Up to 4537 conditions per place. [2023-08-30 15:39:52,841 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 49 selfloop transitions, 1 changer transitions 3/54 dead transitions. [2023-08-30 15:39:52,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 483 flow [2023-08-30 15:39:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 15:39:52,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2023-08-30 15:39:52,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 15:39:52,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 15:39:52,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:52,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 15:39:52,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:52,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:52,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:52,847 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 385 flow. Second operand 3 states and 516 transitions. [2023-08-30 15:39:52,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 483 flow [2023-08-30 15:39:52,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 393 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 15:39:52,851 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 282 flow [2023-08-30 15:39:52,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-08-30 15:39:52,852 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-30 15:39:52,852 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 282 flow [2023-08-30 15:39:52,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:52,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:52,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:52,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:53,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:53,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:53,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1234282000, now seen corresponding path program 1 times [2023-08-30 15:39:53,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:53,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685953001] [2023-08-30 15:39:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:53,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:39:53,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:53,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685953001] [2023-08-30 15:39:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685953001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:53,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013457537] [2023-08-30 15:39:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:53,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:53,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:53,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:53,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:39:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:53,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:39:53,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:53,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:39:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:53,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013457537] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:39:53,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:39:53,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-30 15:39:53,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951436282] [2023-08-30 15:39:53,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:39:53,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:39:53,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:53,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:39:53,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:39:53,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 370 [2023-08-30 15:39:53,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:53,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:53,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 370 [2023-08-30 15:39:53,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:54,149 INFO L130 PetriNetUnfolder]: 2712/4581 cut-off events. [2023-08-30 15:39:54,150 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-30 15:39:54,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11011 conditions, 4581 events. 2712/4581 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29277 event pairs, 487 based on Foata normal form. 16/4015 useless extension candidates. Maximal degree in co-relation 10988. Up to 1836 conditions per place. [2023-08-30 15:39:54,176 INFO L137 encePairwiseOnDemand]: 361/370 looper letters, 54 selfloop transitions, 17 changer transitions 19/91 dead transitions. [2023-08-30 15:39:54,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 571 flow [2023-08-30 15:39:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:39:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:39:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1555 transitions. [2023-08-30 15:39:54,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42027027027027025 [2023-08-30 15:39:54,182 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1555 transitions. [2023-08-30 15:39:54,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1555 transitions. [2023-08-30 15:39:54,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:54,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1555 transitions. [2023-08-30 15:39:54,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.5) internal successors, (1555), 10 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:54,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:54,193 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:54,193 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 282 flow. Second operand 10 states and 1555 transitions. [2023-08-30 15:39:54,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 571 flow [2023-08-30 15:39:54,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:39:54,200 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 333 flow [2023-08-30 15:39:54,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=333, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-08-30 15:39:54,201 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-30 15:39:54,202 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 333 flow [2023-08-30 15:39:54,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:54,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:54,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 15:39:54,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:54,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:54,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:54,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2075999010, now seen corresponding path program 2 times [2023-08-30 15:39:54,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:54,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359665461] [2023-08-30 15:39:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:54,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:39:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:54,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359665461] [2023-08-30 15:39:54,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359665461] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:54,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123817300] [2023-08-30 15:39:54,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:39:54,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:54,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:54,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:54,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:39:54,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:39:54,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:39:54,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:39:54,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 15:39:54,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:39:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 15:39:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123817300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:39:54,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:39:54,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-08-30 15:39:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571591975] [2023-08-30 15:39:54,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:39:54,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:39:54,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:39:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:39:54,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 370 [2023-08-30 15:39:54,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:54,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:54,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 370 [2023-08-30 15:39:54,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:55,309 INFO L130 PetriNetUnfolder]: 3594/5906 cut-off events. [2023-08-30 15:39:55,309 INFO L131 PetriNetUnfolder]: For 1887/1905 co-relation queries the response was YES. [2023-08-30 15:39:55,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16138 conditions, 5906 events. 3594/5906 cut-off events. For 1887/1905 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37962 event pairs, 441 based on Foata normal form. 0/5177 useless extension candidates. Maximal degree in co-relation 16111. Up to 1638 conditions per place. [2023-08-30 15:39:55,341 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 34 selfloop transitions, 1 changer transitions 55/90 dead transitions. [2023-08-30 15:39:55,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 625 flow [2023-08-30 15:39:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:39:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:39:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1188 transitions. [2023-08-30 15:39:55,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586872586872587 [2023-08-30 15:39:55,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1188 transitions. [2023-08-30 15:39:55,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1188 transitions. [2023-08-30 15:39:55,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:55,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1188 transitions. [2023-08-30 15:39:55,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.71428571428572) internal successors, (1188), 7 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,353 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,353 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 333 flow. Second operand 7 states and 1188 transitions. [2023-08-30 15:39:55,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 625 flow [2023-08-30 15:39:55,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 586 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 15:39:55,368 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 252 flow [2023-08-30 15:39:55,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-30 15:39:55,369 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-30 15:39:55,369 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 252 flow [2023-08-30 15:39:55,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:55,370 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 15:39:55,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:55,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:55,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:39:55,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:55,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1538947150, now seen corresponding path program 2 times [2023-08-30 15:39:55,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:55,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628614961] [2023-08-30 15:39:55,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:55,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628614961] [2023-08-30 15:39:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628614961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:39:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994454335] [2023-08-30 15:39:55,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:39:55,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:39:55,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:39:55,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:39:55,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:39:55,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:39:55,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:39:55,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:39:55,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:39:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 15:39:55,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:39:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994454335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:55,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:39:55,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 15:39:55,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075308449] [2023-08-30 15:39:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:55,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:39:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:39:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 15:39:55,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 15:39:55,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:55,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 15:39:55,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:55,960 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2023-08-30 15:39:55,960 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-08-30 15:39:55,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 45 events. 12/45 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 185. Up to 45 conditions per place. [2023-08-30 15:39:55,961 INFO L137 encePairwiseOnDemand]: 368/370 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 15:39:55,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 296 flow [2023-08-30 15:39:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:39:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:39:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 15:39:55,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2023-08-30 15:39:55,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 15:39:55,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 15:39:55,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:55,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 15:39:55,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,979 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 252 flow. Second operand 3 states and 485 transitions. [2023-08-30 15:39:55,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 296 flow [2023-08-30 15:39:55,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 34 transitions, 204 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-08-30 15:39:55,980 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-08-30 15:39:55,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-08-30 15:39:55,981 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2023-08-30 15:39:55,981 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-08-30 15:39:55,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:39:55,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 15:39:55,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 15:39:55,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 15:39:55,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 15:39:55,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 15:39:55,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 15:39:55,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 15:39:55,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 15:39:55,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 15:39:55,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 15:39:55,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-30 15:39:55,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-08-30 15:39:55,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 15:39:55,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 15:39:55,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 15:39:55,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 15:39:55,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 15:39:55,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 15:39:55,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:56,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 15:39:56,195 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:56,199 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:39:56,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:39:56,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:39:56 BasicIcfg [2023-08-30 15:39:56,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:39:56,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:39:56,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:39:56,202 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:39:56,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:39:41" (3/4) ... [2023-08-30 15:39:56,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:39:56,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:39:56,209 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:39:56,215 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 15:39:56,215 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:39:56,216 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:39:56,216 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:39:56,250 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:39:56,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:39:56,250 INFO L158 Benchmark]: Toolchain (without parser) took 16126.19ms. Allocated memory was 79.7MB in the beginning and 601.9MB in the end (delta: 522.2MB). Free memory was 57.8MB in the beginning and 444.6MB in the end (delta: -386.8MB). Peak memory consumption was 137.5MB. Max. memory is 16.1GB. [2023-08-30 15:39:56,251 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:39:56,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.51ms. Allocated memory is still 79.7MB. Free memory was 57.6MB in the beginning and 46.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 15:39:56,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.33ms. Allocated memory is still 79.7MB. Free memory was 45.8MB in the beginning and 43.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:39:56,251 INFO L158 Benchmark]: Boogie Preprocessor took 58.09ms. Allocated memory is still 79.7MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:39:56,252 INFO L158 Benchmark]: RCFGBuilder took 687.77ms. Allocated memory is still 79.7MB. Free memory was 41.8MB in the beginning and 32.2MB in the end (delta: 9.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-08-30 15:39:56,252 INFO L158 Benchmark]: TraceAbstraction took 15028.64ms. Allocated memory was 79.7MB in the beginning and 601.9MB in the end (delta: 522.2MB). Free memory was 31.4MB in the beginning and 447.7MB in the end (delta: -416.3MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. [2023-08-30 15:39:56,252 INFO L158 Benchmark]: Witness Printer took 48.00ms. Allocated memory is still 601.9MB. Free memory was 447.7MB in the beginning and 444.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:39:56,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory was 41.1MB in the beginning and 41.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.51ms. Allocated memory is still 79.7MB. Free memory was 57.6MB in the beginning and 46.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.33ms. Allocated memory is still 79.7MB. Free memory was 45.8MB in the beginning and 43.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.09ms. Allocated memory is still 79.7MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 687.77ms. Allocated memory is still 79.7MB. Free memory was 41.8MB in the beginning and 32.2MB in the end (delta: 9.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15028.64ms. Allocated memory was 79.7MB in the beginning and 601.9MB in the end (delta: 522.2MB). Free memory was 31.4MB in the beginning and 447.7MB in the end (delta: -416.3MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB. * Witness Printer took 48.00ms. Allocated memory is still 601.9MB. Free memory was 447.7MB in the beginning and 444.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 165 PlacesBefore, 33 PlacesAfterwards, 172 TransitionsBefore, 31 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 180 TotalNumberOfCompositions, 1454 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1054, independent: 997, independent conditional: 0, independent unconditional: 997, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 480, independent: 467, independent conditional: 0, independent unconditional: 467, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1054, independent: 530, independent conditional: 0, independent unconditional: 530, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 480, unknown conditional: 0, unknown unconditional: 480] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 206 locations, 18 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: 14.9s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1719 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1421 mSDsluCounter, 483 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1937 IncrementalHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 111 mSDtfsCounter, 1937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=8, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 146 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 524 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 91/205 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:39:56,278 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