./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:46:52,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:46:52,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:46:52,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:46:52,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:46:52,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:46:52,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:46:52,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:46:52,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:46:52,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:46:52,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:46:52,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:46:52,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:46:52,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:46:52,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:46:52,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:46:52,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:46:52,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:46:52,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:46:52,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:46:52,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:46:52,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:46:52,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:46:52,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:46:52,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:46:52,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:46:52,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:46:52,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:46:52,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:46:52,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:46:52,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:46:52,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:46:52,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:46:52,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:46:52,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:46:52,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:46:52,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:46:52,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:46:52,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:46:52,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:46:52,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:46:52,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:46:52,545 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:46:52,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:46:52,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:46:52,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:46:52,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:46:52,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:46:52,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:46:52,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:46:52,549 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:46:52,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:46:52,550 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:46:52,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:46:52,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:46:52,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:46:52,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:46:52,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:46:52,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:46:52,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:46:52,551 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:46:52,551 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:46:52,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:46:52,552 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:46:52,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:46:52,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:46:52,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:46:52,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:46:52,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:46:52,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:46:52,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:46:52,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:46:52,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:46:52,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:46:52,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:46:52,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:46:52,555 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:46:52,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:46:52,555 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:46:52,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:46:52,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:46:52,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:46:52,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:46:52,886 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:46:52,886 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:46:52,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-08-30 10:46:54,151 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:46:54,392 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:46:54,392 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-08-30 10:46:54,398 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe38ce9e/bbbfcbdd8b60485a8ab2d85efd38c6bb/FLAG93a71556f [2023-08-30 10:46:54,414 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe38ce9e/bbbfcbdd8b60485a8ab2d85efd38c6bb [2023-08-30 10:46:54,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:46:54,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:46:54,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:46:54,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:46:54,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:46:54,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15524fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54, skipping insertion in model container [2023-08-30 10:46:54,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:46:54,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:46:54,566 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c[2251,2264] [2023-08-30 10:46:54,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:46:54,580 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:46:54,596 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c[2251,2264] [2023-08-30 10:46:54,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:46:54,611 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:46:54,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54 WrapperNode [2023-08-30 10:46:54,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:46:54,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:46:54,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:46:54,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:46:54,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,644 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 120 [2023-08-30 10:46:54,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:46:54,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:46:54,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:46:54,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:46:54,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,691 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:46:54,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:46:54,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:46:54,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:46:54,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (1/1) ... [2023-08-30 10:46:54,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:46:54,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:46:54,742 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 10:46:54,769 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 10:46:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:46:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 10:46:54,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 10:46:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 10:46:54,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 10:46:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:46:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:46:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:46:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 10:46:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:46:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:46:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:46:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:46:54,787 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 10:46:54,909 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:46:54,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:46:55,180 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:46:55,188 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:46:55,188 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 10:46:55,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:46:55 BoogieIcfgContainer [2023-08-30 10:46:55,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:46:55,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:46:55,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:46:55,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:46:55,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:46:54" (1/3) ... [2023-08-30 10:46:55,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5baceefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:46:55, skipping insertion in model container [2023-08-30 10:46:55,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:46:54" (2/3) ... [2023-08-30 10:46:55,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5baceefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:46:55, skipping insertion in model container [2023-08-30 10:46:55,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:46:55" (3/3) ... [2023-08-30 10:46:55,214 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-08-30 10:46:55,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:46:55,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:46:55,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 10:46:55,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:46:55,317 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:46:55,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 177 transitions, 370 flow [2023-08-30 10:46:55,416 INFO L130 PetriNetUnfolder]: 15/175 cut-off events. [2023-08-30 10:46:55,416 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 10:46:55,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 175 events. 15/175 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 178 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-08-30 10:46:55,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 177 transitions, 370 flow [2023-08-30 10:46:55,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 159 transitions, 327 flow [2023-08-30 10:46:55,429 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:46:55,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 327 flow [2023-08-30 10:46:55,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 327 flow [2023-08-30 10:46:55,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 327 flow [2023-08-30 10:46:55,482 INFO L130 PetriNetUnfolder]: 14/159 cut-off events. [2023-08-30 10:46:55,482 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:46:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 159 events. 14/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-08-30 10:46:55,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 1400 [2023-08-30 10:47:00,300 INFO L134 LiptonReduction]: Checked pairs total: 1963 [2023-08-30 10:47:00,301 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 10:47:00,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:47:00,320 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;@56becb92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:47:00,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-30 10:47:00,322 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:47:00,323 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:47:00,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:00,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:47:00,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:00,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:00,328 INFO L85 PathProgramCache]: Analyzing trace with hash 21487, now seen corresponding path program 1 times [2023-08-30 10:47:00,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:00,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805871392] [2023-08-30 10:47:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:00,526 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 10:47:00,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805871392] [2023-08-30 10:47:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805871392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:00,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:00,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732803586] [2023-08-30 10:47:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:00,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:00,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:00,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:00,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:00,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 10:47:00,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:00,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 10:47:00,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:00,740 INFO L130 PetriNetUnfolder]: 181/307 cut-off events. [2023-08-30 10:47:00,741 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 10:47:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 307 events. 181/307 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1032 event pairs, 114 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 270. Up to 157 conditions per place. [2023-08-30 10:47:00,745 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-30 10:47:00,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 45 transitions, 198 flow [2023-08-30 10:47:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 10:47:00,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48417132216014896 [2023-08-30 10:47:00,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 10:47:00,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 10:47:00,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:00,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 10:47:00,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,790 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 59 flow. Second operand 3 states and 520 transitions. [2023-08-30 10:47:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 45 transitions, 198 flow [2023-08-30 10:47:00,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:47:00,800 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 90 flow [2023-08-30 10:47:00,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-08-30 10:47:00,806 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 10:47:00,806 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 90 flow [2023-08-30 10:47:00,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:00,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:47:00,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:47:00,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:00,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash 667124, now seen corresponding path program 1 times [2023-08-30 10:47:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:00,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987306278] [2023-08-30 10:47:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987306278] [2023-08-30 10:47:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987306278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:00,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:00,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:47:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505158917] [2023-08-30 10:47:00,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:00,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:00,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:00,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 10:47:00,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:00,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 10:47:00,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:00,975 INFO L130 PetriNetUnfolder]: 181/305 cut-off events. [2023-08-30 10:47:00,976 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 10:47:00,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 305 events. 181/305 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1052 event pairs, 114 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 313. Up to 305 conditions per place. [2023-08-30 10:47:00,981 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 10:47:00,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 134 flow [2023-08-30 10:47:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 10:47:00,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618249534450652 [2023-08-30 10:47:00,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 10:47:00,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 10:47:00,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:00,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 10:47:00,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,990 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 90 flow. Second operand 3 states and 496 transitions. [2023-08-30 10:47:00,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 134 flow [2023-08-30 10:47:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:47:00,992 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 76 flow [2023-08-30 10:47:00,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2023-08-30 10:47:00,993 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-08-30 10:47:00,993 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 76 flow [2023-08-30 10:47:00,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:00,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:00,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:47:00,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:47:00,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:00,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash 667126, now seen corresponding path program 1 times [2023-08-30 10:47:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:00,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810334861] [2023-08-30 10:47:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:01,106 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 10:47:01,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:01,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810334861] [2023-08-30 10:47:01,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810334861] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:01,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29172931] [2023-08-30 10:47:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:01,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:01,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:01,129 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 10:47:01,149 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 10:47:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:01,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:47:01,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:01,224 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 10:47:01,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:01,239 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 10:47:01,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29172931] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:01,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:01,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 10:47:01,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744859731] [2023-08-30 10:47:01,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:01,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:47:01,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:01,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:47:01,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:47:01,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 10:47:01,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:01,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:01,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 10:47:01,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:01,531 INFO L130 PetriNetUnfolder]: 451/758 cut-off events. [2023-08-30 10:47:01,532 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 10:47:01,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 758 events. 451/758 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3259 event pairs, 285 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 1586. Up to 155 conditions per place. [2023-08-30 10:47:01,536 INFO L137 encePairwiseOnDemand]: 352/358 looper letters, 90 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-08-30 10:47:01,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 103 transitions, 470 flow [2023-08-30 10:47:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:47:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:47:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1051 transitions. [2023-08-30 10:47:01,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489292364990689 [2023-08-30 10:47:01,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1051 transitions. [2023-08-30 10:47:01,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1051 transitions. [2023-08-30 10:47:01,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:01,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1051 transitions. [2023-08-30 10:47:01,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:01,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:01,547 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:01,548 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 76 flow. Second operand 6 states and 1051 transitions. [2023-08-30 10:47:01,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 103 transitions, 470 flow [2023-08-30 10:47:01,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 103 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:01,550 INFO L231 Difference]: Finished difference. Result has 33 places, 35 transitions, 168 flow [2023-08-30 10:47:01,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=33, PETRI_TRANSITIONS=35} [2023-08-30 10:47:01,551 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-30 10:47:01,551 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions, 168 flow [2023-08-30 10:47:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:01,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:01,552 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 10:47:01,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:47:01,758 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 10:47:01,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:01,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1599525583, now seen corresponding path program 2 times [2023-08-30 10:47:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:01,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753199532] [2023-08-30 10:47:01,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:01,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:01,906 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 10:47:01,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753199532] [2023-08-30 10:47:01,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753199532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:01,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482552706] [2023-08-30 10:47:01,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:47:01,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:01,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:01,910 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 10:47:01,935 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 10:47:01,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:47:01,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:47:01,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:47:01,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:01,992 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 10:47:01,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:47:01,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482552706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:01,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:47:01,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 10:47:01,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640215721] [2023-08-30 10:47:01,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:01,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:01,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:01,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:47:02,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 358 [2023-08-30 10:47:02,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:02,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 358 [2023-08-30 10:47:02,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:02,125 INFO L130 PetriNetUnfolder]: 451/757 cut-off events. [2023-08-30 10:47:02,125 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 10:47:02,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 757 events. 451/757 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3256 event pairs, 285 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1609. Up to 752 conditions per place. [2023-08-30 10:47:02,131 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 28 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-08-30 10:47:02,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 226 flow [2023-08-30 10:47:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-30 10:47:02,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4655493482309125 [2023-08-30 10:47:02,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-30 10:47:02,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-30 10:47:02,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:02,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-30 10:47:02,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 10:47:02,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,138 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 168 flow. Second operand 3 states and 500 transitions. [2023-08-30 10:47:02,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 226 flow [2023-08-30 10:47:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:02,140 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 151 flow [2023-08-30 10:47:02,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2023-08-30 10:47:02,141 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-30 10:47:02,141 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 151 flow [2023-08-30 10:47:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:02,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:47:02,151 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 10:47:02,348 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 10:47:02,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:02,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1597376419, now seen corresponding path program 1 times [2023-08-30 10:47:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740907268] [2023-08-30 10:47:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:02,408 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 10:47:02,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:02,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740907268] [2023-08-30 10:47:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740907268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:02,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:02,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712896095] [2023-08-30 10:47:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:02,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:02,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-08-30 10:47:02,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 151 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 10:47:02,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:02,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-08-30 10:47:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:02,566 INFO L130 PetriNetUnfolder]: 751/1247 cut-off events. [2023-08-30 10:47:02,566 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 10:47:02,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 1247 events. 751/1247 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5939 event pairs, 165 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 2614. Up to 781 conditions per place. [2023-08-30 10:47:02,573 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-30 10:47:02,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 274 flow [2023-08-30 10:47:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 10:47:02,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48417132216014896 [2023-08-30 10:47:02,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 10:47:02,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 10:47:02,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:02,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 10:47:02,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,579 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 151 flow. Second operand 3 states and 520 transitions. [2023-08-30 10:47:02,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 274 flow [2023-08-30 10:47:02,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:47:02,581 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 153 flow [2023-08-30 10:47:02,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2023-08-30 10:47:02,582 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-30 10:47:02,582 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 153 flow [2023-08-30 10:47:02,583 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 10:47:02,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:02,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:02,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:47:02,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:02,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2021009023, now seen corresponding path program 1 times [2023-08-30 10:47:02,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437285932] [2023-08-30 10:47:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:02,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:02,636 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 10:47:02,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:02,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437285932] [2023-08-30 10:47:02,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437285932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:02,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:02,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:47:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353011301] [2023-08-30 10:47:02,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:02,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:47:02,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:02,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:47:02,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:47:02,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-08-30 10:47:02,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:02,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-08-30 10:47:02,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:02,822 INFO L130 PetriNetUnfolder]: 1071/1767 cut-off events. [2023-08-30 10:47:02,822 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2023-08-30 10:47:02,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1767 events. 1071/1767 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9203 event pairs, 235 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 3999. Up to 1141 conditions per place. [2023-08-30 10:47:02,832 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-30 10:47:02,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 281 flow [2023-08-30 10:47:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 10:47:02,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823091247672253 [2023-08-30 10:47:02,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 10:47:02,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 10:47:02,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:02,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 10:47:02,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,841 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 153 flow. Second operand 3 states and 518 transitions. [2023-08-30 10:47:02,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 281 flow [2023-08-30 10:47:02,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:02,846 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 165 flow [2023-08-30 10:47:02,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-08-30 10:47:02,849 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-30 10:47:02,849 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 165 flow [2023-08-30 10:47:02,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:02,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:02,850 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 10:47:02,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:47:02,850 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:02,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2023979724, now seen corresponding path program 1 times [2023-08-30 10:47:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599438125] [2023-08-30 10:47:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:02,926 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 10:47:02,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599438125] [2023-08-30 10:47:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599438125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811091058] [2023-08-30 10:47:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:02,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:02,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:02,928 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 10:47:02,955 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 10:47:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:03,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 10:47:03,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:03,030 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 10:47:03,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:03,079 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 10:47:03,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811091058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:03,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:03,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:47:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218539235] [2023-08-30 10:47:03,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:03,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:47:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:47:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:47:03,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 10:47:03,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 165 flow. Second operand has 13 states, 13 states have (on average 158.15384615384616) internal successors, (2056), 13 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:03,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:03,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 10:47:03,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:03,761 INFO L130 PetriNetUnfolder]: 2355/3885 cut-off events. [2023-08-30 10:47:03,761 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2023-08-30 10:47:03,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 3885 events. 2355/3885 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 20852 event pairs, 1661 based on Foata normal form. 6/2828 useless extension candidates. Maximal degree in co-relation 9733. Up to 881 conditions per place. [2023-08-30 10:47:03,782 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 213 selfloop transitions, 31 changer transitions 0/244 dead transitions. [2023-08-30 10:47:03,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 244 transitions, 1345 flow [2023-08-30 10:47:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:47:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:47:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2112 transitions. [2023-08-30 10:47:03,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49162011173184356 [2023-08-30 10:47:03,790 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2112 transitions. [2023-08-30 10:47:03,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2112 transitions. [2023-08-30 10:47:03,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:03,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2112 transitions. [2023-08-30 10:47:03,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 176.0) internal successors, (2112), 12 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:03,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:03,802 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:03,802 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 165 flow. Second operand 12 states and 2112 transitions. [2023-08-30 10:47:03,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 244 transitions, 1345 flow [2023-08-30 10:47:03,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 244 transitions, 1333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:03,808 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 373 flow [2023-08-30 10:47:03,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=373, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-08-30 10:47:03,809 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-08-30 10:47:03,809 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 373 flow [2023-08-30 10:47:03,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.15384615384616) internal successors, (2056), 13 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:03,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:03,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:03,815 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 10:47:04,015 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 10:47:04,016 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:04,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1773228645, now seen corresponding path program 1 times [2023-08-30 10:47:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:04,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908278657] [2023-08-30 10:47:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:04,124 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 10:47:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:04,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908278657] [2023-08-30 10:47:04,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908278657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:04,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873158538] [2023-08-30 10:47:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:04,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:04,130 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 10:47:04,133 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 10:47:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:04,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:47:04,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:47:04,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:47:04,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873158538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:04,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:47:04,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 10:47:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094052778] [2023-08-30 10:47:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:04,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:47:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:04,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:47:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:47:04,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 358 [2023-08-30 10:47:04,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:04,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:04,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 358 [2023-08-30 10:47:04,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:04,882 INFO L130 PetriNetUnfolder]: 3070/5239 cut-off events. [2023-08-30 10:47:04,883 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2023-08-30 10:47:04,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12800 conditions, 5239 events. 3070/5239 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 31712 event pairs, 2178 based on Foata normal form. 220/4137 useless extension candidates. Maximal degree in co-relation 12777. Up to 3884 conditions per place. [2023-08-30 10:47:04,911 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 84 selfloop transitions, 4 changer transitions 8/96 dead transitions. [2023-08-30 10:47:04,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 770 flow [2023-08-30 10:47:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:47:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:47:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2023-08-30 10:47:04,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45363128491620114 [2023-08-30 10:47:04,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2023-08-30 10:47:04,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2023-08-30 10:47:04,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:04,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2023-08-30 10:47:04,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:04,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:04,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:04,922 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 373 flow. Second operand 5 states and 812 transitions. [2023-08-30 10:47:04,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 770 flow [2023-08-30 10:47:04,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 646 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 10:47:04,928 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 306 flow [2023-08-30 10:47:04,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2023-08-30 10:47:04,930 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-08-30 10:47:04,930 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 306 flow [2023-08-30 10:47:04,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:04,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:04,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:04,944 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 10:47:05,137 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 10:47:05,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:05,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1775351923, now seen corresponding path program 1 times [2023-08-30 10:47:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547325195] [2023-08-30 10:47:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:05,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:05,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547325195] [2023-08-30 10:47:05,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547325195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:05,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:47:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707412898] [2023-08-30 10:47:05,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:05,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:47:05,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:05,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:47:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:47:05,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 358 [2023-08-30 10:47:05,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:05,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:05,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 358 [2023-08-30 10:47:05,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:05,740 INFO L130 PetriNetUnfolder]: 2454/4183 cut-off events. [2023-08-30 10:47:05,741 INFO L131 PetriNetUnfolder]: For 1800/1800 co-relation queries the response was YES. [2023-08-30 10:47:05,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10678 conditions, 4183 events. 2454/4183 cut-off events. For 1800/1800 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 24158 event pairs, 1760 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 10653. Up to 3884 conditions per place. [2023-08-30 10:47:05,765 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 62 selfloop transitions, 4 changer transitions 18/84 dead transitions. [2023-08-30 10:47:05,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 599 flow [2023-08-30 10:47:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:47:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:47:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 802 transitions. [2023-08-30 10:47:05,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4480446927374302 [2023-08-30 10:47:05,769 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 802 transitions. [2023-08-30 10:47:05,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 802 transitions. [2023-08-30 10:47:05,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:05,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 802 transitions. [2023-08-30 10:47:05,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.4) internal successors, (802), 5 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:05,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:05,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:05,775 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 306 flow. Second operand 5 states and 802 transitions. [2023-08-30 10:47:05,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 599 flow [2023-08-30 10:47:05,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 593 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 10:47:05,782 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 315 flow [2023-08-30 10:47:05,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-30 10:47:05,783 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-30 10:47:05,783 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 315 flow [2023-08-30 10:47:05,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:05,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:05,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:05,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:47:05,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:05,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:05,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1031000096, now seen corresponding path program 1 times [2023-08-30 10:47:05,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:05,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662891362] [2023-08-30 10:47:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:05,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:05,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662891362] [2023-08-30 10:47:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662891362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:05,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:47:05,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433190887] [2023-08-30 10:47:05,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:47:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:47:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:47:05,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2023-08-30 10:47:05,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:05,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:05,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2023-08-30 10:47:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:06,460 INFO L130 PetriNetUnfolder]: 2306/3955 cut-off events. [2023-08-30 10:47:06,460 INFO L131 PetriNetUnfolder]: For 2439/2439 co-relation queries the response was YES. [2023-08-30 10:47:06,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10658 conditions, 3955 events. 2306/3955 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23419 event pairs, 616 based on Foata normal form. 20/3282 useless extension candidates. Maximal degree in co-relation 10630. Up to 2281 conditions per place. [2023-08-30 10:47:06,479 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 61 selfloop transitions, 16 changer transitions 4/81 dead transitions. [2023-08-30 10:47:06,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 558 flow [2023-08-30 10:47:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:47:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:47:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2023-08-30 10:47:06,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463687150837989 [2023-08-30 10:47:06,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2023-08-30 10:47:06,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2023-08-30 10:47:06,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:06,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2023-08-30 10:47:06,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:06,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:06,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:06,489 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 315 flow. Second operand 5 states and 799 transitions. [2023-08-30 10:47:06,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 558 flow [2023-08-30 10:47:06,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 551 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 10:47:06,499 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 358 flow [2023-08-30 10:47:06,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 10:47:06,500 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-08-30 10:47:06,500 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 358 flow [2023-08-30 10:47:06,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:06,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:06,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 10:47:06,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:06,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1033123352, now seen corresponding path program 1 times [2023-08-30 10:47:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:06,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959128664] [2023-08-30 10:47:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:47:06,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:06,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959128664] [2023-08-30 10:47:06,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959128664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:06,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:47:06,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:47:06,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364110039] [2023-08-30 10:47:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:06,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:47:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:47:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:47:06,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2023-08-30 10:47:06,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:06,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:06,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2023-08-30 10:47:06,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:07,070 INFO L130 PetriNetUnfolder]: 2250/3859 cut-off events. [2023-08-30 10:47:07,070 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-30 10:47:07,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 3859 events. 2250/3859 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 22279 event pairs, 618 based on Foata normal form. 6/3185 useless extension candidates. Maximal degree in co-relation 10615. Up to 2221 conditions per place. [2023-08-30 10:47:07,091 INFO L137 encePairwiseOnDemand]: 352/358 looper letters, 53 selfloop transitions, 15 changer transitions 9/77 dead transitions. [2023-08-30 10:47:07,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 579 flow [2023-08-30 10:47:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:47:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:47:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-08-30 10:47:07,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446927374301676 [2023-08-30 10:47:07,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-08-30 10:47:07,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-08-30 10:47:07,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:07,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-08-30 10:47:07,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:07,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:07,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:07,099 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 358 flow. Second operand 5 states and 796 transitions. [2023-08-30 10:47:07,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 579 flow [2023-08-30 10:47:07,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 551 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:47:07,106 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 361 flow [2023-08-30 10:47:07,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-08-30 10:47:07,106 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2023-08-30 10:47:07,107 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 361 flow [2023-08-30 10:47:07,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:07,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:07,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:07,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:47:07,107 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:07,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 866507716, now seen corresponding path program 1 times [2023-08-30 10:47:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:07,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532396355] [2023-08-30 10:47:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:07,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:47:07,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532396355] [2023-08-30 10:47:07,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532396355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:07,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304446232] [2023-08-30 10:47:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:07,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:07,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:07,153 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 10:47:07,177 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 10:47:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:07,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:47:07,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:07,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:07,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304446232] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:07,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:07,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 11 [2023-08-30 10:47:07,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843740492] [2023-08-30 10:47:07,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:47:07,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:47:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:47:07,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 358 [2023-08-30 10:47:07,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 361 flow. Second operand has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:07,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:07,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 358 [2023-08-30 10:47:07,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:08,133 INFO L130 PetriNetUnfolder]: 1860/3215 cut-off events. [2023-08-30 10:47:08,134 INFO L131 PetriNetUnfolder]: For 2467/2467 co-relation queries the response was YES. [2023-08-30 10:47:08,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8881 conditions, 3215 events. 1860/3215 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 18532 event pairs, 560 based on Foata normal form. 20/2819 useless extension candidates. Maximal degree in co-relation 8852. Up to 1584 conditions per place. [2023-08-30 10:47:08,152 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 65 selfloop transitions, 19 changer transitions 8/92 dead transitions. [2023-08-30 10:47:08,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 677 flow [2023-08-30 10:47:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:47:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:47:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1377 transitions. [2023-08-30 10:47:08,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273743016759777 [2023-08-30 10:47:08,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1377 transitions. [2023-08-30 10:47:08,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1377 transitions. [2023-08-30 10:47:08,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:08,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1377 transitions. [2023-08-30 10:47:08,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:08,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 358.0) internal successors, (3580), 10 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:08,167 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 358.0) internal successors, (3580), 10 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:08,168 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 361 flow. Second operand 9 states and 1377 transitions. [2023-08-30 10:47:08,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 677 flow [2023-08-30 10:47:08,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 636 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 10:47:08,176 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 393 flow [2023-08-30 10:47:08,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2023-08-30 10:47:08,176 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2023-08-30 10:47:08,176 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 393 flow [2023-08-30 10:47:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:08,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:08,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:08,186 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 10:47:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 10:47:08,384 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:08,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash 864384460, now seen corresponding path program 1 times [2023-08-30 10:47:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424193014] [2023-08-30 10:47:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:08,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:08,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424193014] [2023-08-30 10:47:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424193014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:08,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511142932] [2023-08-30 10:47:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:08,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:08,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:08,518 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 10:47:08,521 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 10:47:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:08,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 10:47:08,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:08,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 10:47:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511142932] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:08,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-30 10:47:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212322520] [2023-08-30 10:47:08,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:08,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:47:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:47:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 10:47:09,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 358 [2023-08-30 10:47:09,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 393 flow. Second operand has 15 states, 15 states have (on average 145.73333333333332) internal successors, (2186), 15 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:09,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:09,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 358 [2023-08-30 10:47:09,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:09,844 INFO L130 PetriNetUnfolder]: 2561/4514 cut-off events. [2023-08-30 10:47:09,845 INFO L131 PetriNetUnfolder]: For 3154/3154 co-relation queries the response was YES. [2023-08-30 10:47:09,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 4514 events. 2561/4514 cut-off events. For 3154/3154 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 27832 event pairs, 1479 based on Foata normal form. 128/4318 useless extension candidates. Maximal degree in co-relation 12283. Up to 2441 conditions per place. [2023-08-30 10:47:09,865 INFO L137 encePairwiseOnDemand]: 348/358 looper letters, 70 selfloop transitions, 24 changer transitions 66/160 dead transitions. [2023-08-30 10:47:09,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 160 transitions, 1161 flow [2023-08-30 10:47:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 10:47:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 10:47:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3289 transitions. [2023-08-30 10:47:09,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175977653631285 [2023-08-30 10:47:09,873 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3289 transitions. [2023-08-30 10:47:09,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3289 transitions. [2023-08-30 10:47:09,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:09,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3289 transitions. [2023-08-30 10:47:09,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 149.5) internal successors, (3289), 22 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:09,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:09,892 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:09,892 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 393 flow. Second operand 22 states and 3289 transitions. [2023-08-30 10:47:09,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 160 transitions, 1161 flow [2023-08-30 10:47:09,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 160 transitions, 1112 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 10:47:09,907 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 484 flow [2023-08-30 10:47:09,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=484, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2023-08-30 10:47:09,907 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 60 predicate places. [2023-08-30 10:47:09,907 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 484 flow [2023-08-30 10:47:09,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 145.73333333333332) internal successors, (2186), 15 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:09,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:09,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:09,916 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 10:47:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:10,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:10,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash 798771196, now seen corresponding path program 1 times [2023-08-30 10:47:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056369273] [2023-08-30 10:47:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:47:10,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:10,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056369273] [2023-08-30 10:47:10,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056369273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:10,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969638017] [2023-08-30 10:47:10,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:10,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:10,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:10,189 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 10:47:10,212 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 10:47:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:10,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:47:10,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:47:10,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:47:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969638017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:10,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 10:47:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480436629] [2023-08-30 10:47:10,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:47:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:47:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:47:10,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-08-30 10:47:10,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:10,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:10,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-08-30 10:47:10,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:11,221 INFO L130 PetriNetUnfolder]: 4998/8528 cut-off events. [2023-08-30 10:47:11,221 INFO L131 PetriNetUnfolder]: For 10857/10857 co-relation queries the response was YES. [2023-08-30 10:47:11,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25826 conditions, 8528 events. 4998/8528 cut-off events. For 10857/10857 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 57045 event pairs, 711 based on Foata normal form. 648/8960 useless extension candidates. Maximal degree in co-relation 25791. Up to 2260 conditions per place. [2023-08-30 10:47:11,271 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 101 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2023-08-30 10:47:11,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 910 flow [2023-08-30 10:47:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:47:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:47:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1029 transitions. [2023-08-30 10:47:11,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790502793296089 [2023-08-30 10:47:11,275 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1029 transitions. [2023-08-30 10:47:11,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1029 transitions. [2023-08-30 10:47:11,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:11,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1029 transitions. [2023-08-30 10:47:11,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:11,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:11,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:11,281 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 484 flow. Second operand 6 states and 1029 transitions. [2023-08-30 10:47:11,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 910 flow [2023-08-30 10:47:11,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 802 flow, removed 31 selfloop flow, removed 13 redundant places. [2023-08-30 10:47:11,316 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 450 flow [2023-08-30 10:47:11,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-08-30 10:47:11,317 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 48 predicate places. [2023-08-30 10:47:11,317 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 450 flow [2023-08-30 10:47:11,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:11,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:11,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:11,323 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 10:47:11,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:11,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:11,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:11,525 INFO L85 PathProgramCache]: Analyzing trace with hash 796647939, now seen corresponding path program 2 times [2023-08-30 10:47:11,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:11,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773395651] [2023-08-30 10:47:11,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:11,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 10:47:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773395651] [2023-08-30 10:47:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773395651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:11,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778220538] [2023-08-30 10:47:11,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:47:11,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:11,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:11,589 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 10:47:11,610 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 10:47:11,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:47:11,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:47:11,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:47:11,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:47:11,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:47:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 10:47:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778220538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:47:11,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:47:11,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 10:47:11,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420930709] [2023-08-30 10:47:11,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:47:11,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:47:11,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:11,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:47:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:47:11,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-30 10:47:11,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:11,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:11,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-30 10:47:11,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:12,587 INFO L130 PetriNetUnfolder]: 6393/10859 cut-off events. [2023-08-30 10:47:12,587 INFO L131 PetriNetUnfolder]: For 16268/16268 co-relation queries the response was YES. [2023-08-30 10:47:12,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31605 conditions, 10859 events. 6393/10859 cut-off events. For 16268/16268 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74319 event pairs, 1647 based on Foata normal form. 324/11183 useless extension candidates. Maximal degree in co-relation 31574. Up to 3965 conditions per place. [2023-08-30 10:47:12,609 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 40 selfloop transitions, 1 changer transitions 61/102 dead transitions. [2023-08-30 10:47:12,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 832 flow [2023-08-30 10:47:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:47:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:47:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2023-08-30 10:47:12,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46694599627560524 [2023-08-30 10:47:12,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2023-08-30 10:47:12,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2023-08-30 10:47:12,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:12,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2023-08-30 10:47:12,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:12,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:12,618 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:12,619 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 450 flow. Second operand 6 states and 1003 transitions. [2023-08-30 10:47:12,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 832 flow [2023-08-30 10:47:12,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 766 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-08-30 10:47:12,649 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 343 flow [2023-08-30 10:47:12,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2023-08-30 10:47:12,649 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 46 predicate places. [2023-08-30 10:47:12,650 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 343 flow [2023-08-30 10:47:12,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:12,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:47:12,650 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 10:47:12,660 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 10:47:12,857 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,SelfDestructingSolverStorable14 [2023-08-30 10:47:12,858 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-30 10:47:12,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:47:12,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1942080116, now seen corresponding path program 2 times [2023-08-30 10:47:12,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:47:12,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428010210] [2023-08-30 10:47:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:47:12,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:47:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:47:13,014 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 10:47:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:47:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428010210] [2023-08-30 10:47:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428010210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:47:13,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925697122] [2023-08-30 10:47:13,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:47:13,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:47:13,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:47:13,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:47:13,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:47:13,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 10:47:13,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:47:13,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:47:13,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:47:13,126 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 10:47:13,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:47:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925697122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:47:13,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:47:13,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 10:47:13,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255537918] [2023-08-30 10:47:13,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:47:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:47:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:47:13,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:47:13,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 10:47:13,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-08-30 10:47:13,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:13,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:47:13,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-08-30 10:47:13,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:47:13,180 INFO L130 PetriNetUnfolder]: 12/56 cut-off events. [2023-08-30 10:47:13,181 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-08-30 10:47:13,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 56 events. 12/56 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 230. Up to 56 conditions per place. [2023-08-30 10:47:13,181 INFO L137 encePairwiseOnDemand]: 356/358 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-30 10:47:13,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 346 flow [2023-08-30 10:47:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:47:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:47:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-30 10:47:13,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44320297951582865 [2023-08-30 10:47:13,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-30 10:47:13,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-30 10:47:13,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:47:13,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-30 10:47:13,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:13,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:13,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:13,186 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 343 flow. Second operand 3 states and 476 transitions. [2023-08-30 10:47:13,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 346 flow [2023-08-30 10:47:13,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 229 flow, removed 2 selfloop flow, removed 19 redundant places. [2023-08-30 10:47:13,188 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-30 10:47:13,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-30 10:47:13,188 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-08-30 10:47:13,188 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-30 10:47:13,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:47:13,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-30 10:47:13,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-30 10:47:13,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-30 10:47:13,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-30 10:47:13,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-30 10:47:13,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-30 10:47:13,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-30 10:47:13,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 10:47:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 10:47:13,398 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:47:13,402 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 10:47:13,402 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 10:47:13,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:47:13 BasicIcfg [2023-08-30 10:47:13,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 10:47:13,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 10:47:13,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 10:47:13,405 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 10:47:13,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:46:55" (3/4) ... [2023-08-30 10:47:13,408 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 10:47:13,412 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 10:47:13,413 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 10:47:13,418 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 10:47:13,419 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 10:47:13,419 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 10:47:13,419 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 10:47:13,459 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 10:47:13,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 10:47:13,459 INFO L158 Benchmark]: Toolchain (without parser) took 19042.37ms. Allocated memory was 69.2MB in the beginning and 885.0MB in the end (delta: 815.8MB). Free memory was 46.4MB in the beginning and 544.5MB in the end (delta: -498.1MB). Peak memory consumption was 318.3MB. Max. memory is 16.1GB. [2023-08-30 10:47:13,459 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 10:47:13,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.42ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 35.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 10:47:13,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.83ms. Allocated memory is still 69.2MB. Free memory was 35.0MB in the beginning and 33.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 10:47:13,460 INFO L158 Benchmark]: Boogie Preprocessor took 56.84ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 33.2MB in the beginning and 68.3MB in the end (delta: -35.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-08-30 10:47:13,460 INFO L158 Benchmark]: RCFGBuilder took 487.83ms. Allocated memory is still 88.1MB. Free memory was 68.3MB in the beginning and 51.2MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 10:47:13,460 INFO L158 Benchmark]: TraceAbstraction took 18196.36ms. Allocated memory was 88.1MB in the beginning and 885.0MB in the end (delta: 796.9MB). Free memory was 50.5MB in the beginning and 547.7MB in the end (delta: -497.1MB). Peak memory consumption was 300.3MB. Max. memory is 16.1GB. [2023-08-30 10:47:13,461 INFO L158 Benchmark]: Witness Printer took 53.60ms. Allocated memory is still 885.0MB. Free memory was 547.7MB in the beginning and 544.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 10:47:13,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.42ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 35.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.83ms. Allocated memory is still 69.2MB. Free memory was 35.0MB in the beginning and 33.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.84ms. Allocated memory was 69.2MB in the beginning and 88.1MB in the end (delta: 18.9MB). Free memory was 33.2MB in the beginning and 68.3MB in the end (delta: -35.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * RCFGBuilder took 487.83ms. Allocated memory is still 88.1MB. Free memory was 68.3MB in the beginning and 51.2MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18196.36ms. Allocated memory was 88.1MB in the beginning and 885.0MB in the end (delta: 796.9MB). Free memory was 50.5MB in the beginning and 547.7MB in the end (delta: -497.1MB). Peak memory consumption was 300.3MB. Max. memory is 16.1GB. * Witness Printer took 53.60ms. Allocated memory is still 885.0MB. Free memory was 547.7MB in the beginning and 544.5MB 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: 4.9s, 152 PlacesBefore, 27 PlacesAfterwards, 159 TransitionsBefore, 25 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 101 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 181 TotalNumberOfCompositions, 1963 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1618, independent: 1560, independent conditional: 0, independent unconditional: 1560, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 817, independent: 804, independent conditional: 0, independent unconditional: 804, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1618, independent: 756, independent conditional: 0, independent unconditional: 756, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 817, unknown conditional: 0, unknown unconditional: 817] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: 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, 201 locations, 14 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: 18.1s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2777 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2267 mSDsluCounter, 579 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 411 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3489 IncrementalHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 168 mSDtfsCounter, 3489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=484occurred in iteration=13, InterpolantAutomatonStates: 99, 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, 1.7s InterpolantComputationTime, 206 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 911 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1362 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 31 InterpolantComputations, 10 PerfectInterpolantSequences, 126/239 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 10:47:13,481 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