./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:07:58,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:07:58,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:07:58,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:07:58,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:07:58,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:07:58,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:07:58,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:07:58,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:07:58,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:07:58,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:07:58,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:07:58,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:07:58,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:07:58,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:07:58,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:07:58,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:07:58,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:07:58,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:07:58,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:07:58,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:07:58,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:07:58,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:07:58,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:07:58,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:07:58,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:07:58,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:07:58,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:07:58,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:07:58,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:07:58,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:07:58,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:07:58,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:07:58,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:07:58,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:07:58,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:07:58,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:07:58,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:07:58,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:07:58,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:07:58,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:07:58,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:07:58,553 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:07:58,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:07:58,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:07:58,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:07:58,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:07:58,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:07:58,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:07:58,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:07:58,556 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:07:58,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:07:58,557 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:07:58,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:07:58,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:07:58,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:07:58,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:07:58,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:07:58,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:07:58,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:07:58,559 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:07:58,559 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:07:58,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:07:58,559 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:07:58,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:07:58,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:07:58,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:07:58,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:07:58,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:07:58,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:07:58,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:07:58,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:07:58,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:07:58,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:07:58,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:07:58,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:07:58,562 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:07:58,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:07:58,563 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:07:58,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:07:58,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:07:58,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:07:58,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:07:58,906 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:07:58,907 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:07:58,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-30 15:08:00,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:08:00,345 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:08:00,346 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-30 15:08:00,353 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ed32b71/c1dc9afa35d849ffb4fa332327bfb94f/FLAG9d651f54a [2023-08-30 15:08:00,715 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ed32b71/c1dc9afa35d849ffb4fa332327bfb94f [2023-08-30 15:08:00,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:08:00,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:08:00,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:08:00,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:08:00,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:08:00,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:00,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d53a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00, skipping insertion in model container [2023-08-30 15:08:00,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:00,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:08:00,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:08:00,930 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/parallel-misc-3.wvr.c[2410,2423] [2023-08-30 15:08:00,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:08:00,945 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:08:00,981 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/parallel-misc-3.wvr.c[2410,2423] [2023-08-30 15:08:00,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:08:00,989 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:08:00,990 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:08:00,996 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:08:00,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00 WrapperNode [2023-08-30 15:08:00,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:08:00,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:08:00,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:08:00,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:08:01,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,037 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-08-30 15:08:01,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:08:01,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:08:01,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:08:01,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:08:01,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,078 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:08:01,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:08:01,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:08:01,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:08:01,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (1/1) ... [2023-08-30 15:08:01,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:08:01,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:01,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:08:01,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:08:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:08:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:08:01,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:08:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:08:01,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:08:01,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:08:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:08:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:08:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:08:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:08:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:08:01,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:08:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:08:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:08:01,155 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:08:01,261 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:08:01,263 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:08:01,515 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:08:01,585 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:08:01,588 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 15:08:01,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:08:01 BoogieIcfgContainer [2023-08-30 15:08:01,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:08:01,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:08:01,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:08:01,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:08:01,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:08:00" (1/3) ... [2023-08-30 15:08:01,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5b65e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:08:01, skipping insertion in model container [2023-08-30 15:08:01,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:08:00" (2/3) ... [2023-08-30 15:08:01,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5b65e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:08:01, skipping insertion in model container [2023-08-30 15:08:01,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:08:01" (3/3) ... [2023-08-30 15:08:01,598 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-08-30 15:08:01,605 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:08:01,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:08:01,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 15:08:01,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:08:01,712 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:08:01,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 212 flow [2023-08-30 15:08:01,816 INFO L130 PetriNetUnfolder]: 11/96 cut-off events. [2023-08-30 15:08:01,820 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:08:01,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 11/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-08-30 15:08:01,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 98 transitions, 212 flow [2023-08-30 15:08:01,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 80 transitions, 169 flow [2023-08-30 15:08:01,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:08:01,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 80 transitions, 169 flow [2023-08-30 15:08:01,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 80 transitions, 169 flow [2023-08-30 15:08:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 80 transitions, 169 flow [2023-08-30 15:08:01,890 INFO L130 PetriNetUnfolder]: 10/80 cut-off events. [2023-08-30 15:08:01,890 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:08:01,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 80 events. 10/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-08-30 15:08:01,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 1628 [2023-08-30 15:08:05,145 INFO L134 LiptonReduction]: Checked pairs total: 1693 [2023-08-30 15:08:05,146 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-30 15:08:05,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:08:05,162 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;@2b9648fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:08:05,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 15:08:05,165 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 15:08:05,165 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:08:05,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:05,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:08:05,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:05,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash 428166, now seen corresponding path program 1 times [2023-08-30 15:08:05,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:05,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630618949] [2023-08-30 15:08:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:05,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:05,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:05,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630618949] [2023-08-30 15:08:05,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630618949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:05,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:05,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:08:05,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939156114] [2023-08-30 15:08:05,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:05,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:05,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:08:05,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2023-08-30 15:08:05,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:05,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:05,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2023-08-30 15:08:05,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:05,583 INFO L130 PetriNetUnfolder]: 153/266 cut-off events. [2023-08-30 15:08:05,583 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 15:08:05,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 266 events. 153/266 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1060 event pairs, 57 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 480. Up to 241 conditions per place. [2023-08-30 15:08:05,586 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-08-30 15:08:05,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2023-08-30 15:08:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-30 15:08:05,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2023-08-30 15:08:05,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-30 15:08:05,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-30 15:08:05,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:05,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-30 15:08:05,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:05,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:05,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:05,617 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 47 flow. Second operand 3 states and 267 transitions. [2023-08-30 15:08:05,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2023-08-30 15:08:05,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:08:05,621 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 75 flow [2023-08-30 15:08:05,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2023-08-30 15:08:05,626 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-08-30 15:08:05,627 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 75 flow [2023-08-30 15:08:05,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:05,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:05,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:08:05,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:08:05,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:05,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash 13274597, now seen corresponding path program 1 times [2023-08-30 15:08:05,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:05,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047261501] [2023-08-30 15:08:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:05,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:05,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:05,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047261501] [2023-08-30 15:08:05,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047261501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:05,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192906920] [2023-08-30 15:08:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:05,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:05,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:05,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:08:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:05,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:08:05,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:06,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:06,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192906920] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:06,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:06,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-30 15:08:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869275275] [2023-08-30 15:08:06,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:06,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 15:08:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 15:08:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:08:06,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 183 [2023-08-30 15:08:06,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 75 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:06,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 183 [2023-08-30 15:08:06,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:06,754 INFO L130 PetriNetUnfolder]: 336/571 cut-off events. [2023-08-30 15:08:06,754 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 15:08:06,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 571 events. 336/571 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2607 event pairs, 15 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 1160. Up to 329 conditions per place. [2023-08-30 15:08:06,759 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 67 selfloop transitions, 35 changer transitions 0/102 dead transitions. [2023-08-30 15:08:06,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 102 transitions, 532 flow [2023-08-30 15:08:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:08:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:08:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 824 transitions. [2023-08-30 15:08:06,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45027322404371584 [2023-08-30 15:08:06,765 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 824 transitions. [2023-08-30 15:08:06,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 824 transitions. [2023-08-30 15:08:06,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:06,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 824 transitions. [2023-08-30 15:08:06,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,775 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,775 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 75 flow. Second operand 10 states and 824 transitions. [2023-08-30 15:08:06,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 102 transitions, 532 flow [2023-08-30 15:08:06,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 102 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:06,778 INFO L231 Difference]: Finished difference. Result has 38 places, 56 transitions, 391 flow [2023-08-30 15:08:06,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=391, PETRI_PLACES=38, PETRI_TRANSITIONS=56} [2023-08-30 15:08:06,779 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-08-30 15:08:06,779 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 56 transitions, 391 flow [2023-08-30 15:08:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:06,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:08:06,789 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 15:08:06,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:06,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:06,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash 13274595, now seen corresponding path program 1 times [2023-08-30 15:08:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:06,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006558550] [2023-08-30 15:08:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:06,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:07,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:07,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006558550] [2023-08-30 15:08:07,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006558550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:07,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109716109] [2023-08-30 15:08:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:07,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:07,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:07,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:07,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:08:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:07,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:08:07,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:07,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:07,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109716109] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:07,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:07,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-30 15:08:07,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954637869] [2023-08-30 15:08:07,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:07,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 15:08:07,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:07,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 15:08:07,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:08:07,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 183 [2023-08-30 15:08:07,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 56 transitions, 391 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:07,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 183 [2023-08-30 15:08:07,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:07,917 INFO L130 PetriNetUnfolder]: 391/674 cut-off events. [2023-08-30 15:08:07,917 INFO L131 PetriNetUnfolder]: For 980/980 co-relation queries the response was YES. [2023-08-30 15:08:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 674 events. 391/674 cut-off events. For 980/980 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3179 event pairs, 13 based on Foata normal form. 44/666 useless extension candidates. Maximal degree in co-relation 1978. Up to 373 conditions per place. [2023-08-30 15:08:07,923 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 65 selfloop transitions, 39 changer transitions 2/106 dead transitions. [2023-08-30 15:08:07,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 106 transitions, 865 flow [2023-08-30 15:08:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:08:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:08:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 644 transitions. [2023-08-30 15:08:07,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43989071038251365 [2023-08-30 15:08:07,926 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 644 transitions. [2023-08-30 15:08:07,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 644 transitions. [2023-08-30 15:08:07,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:07,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 644 transitions. [2023-08-30 15:08:07,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.5) internal successors, (644), 8 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,932 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,932 INFO L175 Difference]: Start difference. First operand has 38 places, 56 transitions, 391 flow. Second operand 8 states and 644 transitions. [2023-08-30 15:08:07,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 106 transitions, 865 flow [2023-08-30 15:08:07,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 106 transitions, 825 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:07,943 INFO L231 Difference]: Finished difference. Result has 47 places, 72 transitions, 696 flow [2023-08-30 15:08:07,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=696, PETRI_PLACES=47, PETRI_TRANSITIONS=72} [2023-08-30 15:08:07,944 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2023-08-30 15:08:07,944 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 72 transitions, 696 flow [2023-08-30 15:08:07,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:07,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:07,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:08,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 15:08:08,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:08,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash 316231217, now seen corresponding path program 1 times [2023-08-30 15:08:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:08,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897594701] [2023-08-30 15:08:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:08,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:08,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:08,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897594701] [2023-08-30 15:08:08,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897594701] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:08,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223539592] [2023-08-30 15:08:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:08,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:08,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:08,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:08:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:08,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 15:08:08,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:08,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:08,694 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 15:08:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223539592] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:08,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:08:08,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 8 [2023-08-30 15:08:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158299013] [2023-08-30 15:08:08,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:08,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:08,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:08:08,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-08-30 15:08:08,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 72 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:08,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:08,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-08-30 15:08:08,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:08,816 INFO L130 PetriNetUnfolder]: 350/603 cut-off events. [2023-08-30 15:08:08,816 INFO L131 PetriNetUnfolder]: For 2314/2314 co-relation queries the response was YES. [2023-08-30 15:08:08,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 603 events. 350/603 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2710 event pairs, 192 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 2113. Up to 603 conditions per place. [2023-08-30 15:08:08,821 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 63 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 15:08:08,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 742 flow [2023-08-30 15:08:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-30 15:08:08,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42805100182149364 [2023-08-30 15:08:08,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-30 15:08:08,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-30 15:08:08,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:08,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-30 15:08:08,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:08,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:08,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:08,826 INFO L175 Difference]: Start difference. First operand has 47 places, 72 transitions, 696 flow. Second operand 3 states and 235 transitions. [2023-08-30 15:08:08,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 742 flow [2023-08-30 15:08:08,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 64 transitions, 647 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 15:08:08,838 INFO L231 Difference]: Finished difference. Result has 43 places, 64 transitions, 521 flow [2023-08-30 15:08:08,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=521, PETRI_PLACES=43, PETRI_TRANSITIONS=64} [2023-08-30 15:08:08,839 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-08-30 15:08:08,839 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 64 transitions, 521 flow [2023-08-30 15:08:08,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:08,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:08,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:08,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:08:09,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:09,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:09,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:09,046 INFO L85 PathProgramCache]: Analyzing trace with hash 327590229, now seen corresponding path program 1 times [2023-08-30 15:08:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:09,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310931913] [2023-08-30 15:08:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:09,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310931913] [2023-08-30 15:08:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310931913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594079237] [2023-08-30 15:08:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:09,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:09,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:08:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:09,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 15:08:09,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:09,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594079237] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:09,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:09,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 15:08:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727897501] [2023-08-30 15:08:09,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:09,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 15:08:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 15:08:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-08-30 15:08:09,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 183 [2023-08-30 15:08:09,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 64 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:09,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 183 [2023-08-30 15:08:09,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:09,868 INFO L130 PetriNetUnfolder]: 427/764 cut-off events. [2023-08-30 15:08:09,869 INFO L131 PetriNetUnfolder]: For 2501/2501 co-relation queries the response was YES. [2023-08-30 15:08:09,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 764 events. 427/764 cut-off events. For 2501/2501 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3823 event pairs, 25 based on Foata normal form. 230/990 useless extension candidates. Maximal degree in co-relation 2759. Up to 253 conditions per place. [2023-08-30 15:08:09,874 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 57 selfloop transitions, 51 changer transitions 7/115 dead transitions. [2023-08-30 15:08:09,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 115 transitions, 980 flow [2023-08-30 15:08:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:08:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:08:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2023-08-30 15:08:09,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40012143290831814 [2023-08-30 15:08:09,877 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2023-08-30 15:08:09,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2023-08-30 15:08:09,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:09,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2023-08-30 15:08:09,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,881 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,881 INFO L175 Difference]: Start difference. First operand has 43 places, 64 transitions, 521 flow. Second operand 9 states and 659 transitions. [2023-08-30 15:08:09,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 115 transitions, 980 flow [2023-08-30 15:08:09,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 115 transitions, 960 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 15:08:09,891 INFO L231 Difference]: Finished difference. Result has 54 places, 82 transitions, 884 flow [2023-08-30 15:08:09,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=884, PETRI_PLACES=54, PETRI_TRANSITIONS=82} [2023-08-30 15:08:09,891 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2023-08-30 15:08:09,892 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 82 transitions, 884 flow [2023-08-30 15:08:09,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:09,892 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:09,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:10,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:10,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:10,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1213233591, now seen corresponding path program 1 times [2023-08-30 15:08:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:10,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037045943] [2023-08-30 15:08:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:10,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037045943] [2023-08-30 15:08:10,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037045943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481650881] [2023-08-30 15:08:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:10,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:10,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:10,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:10,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:08:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:10,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 15:08:10,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:10,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:10,531 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 15:08:10,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481650881] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:10,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:08:10,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 4] total 8 [2023-08-30 15:08:10,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087796974] [2023-08-30 15:08:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:10,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:08:10,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2023-08-30 15:08:10,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 82 transitions, 884 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:10,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2023-08-30 15:08:10,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:10,638 INFO L130 PetriNetUnfolder]: 378/681 cut-off events. [2023-08-30 15:08:10,638 INFO L131 PetriNetUnfolder]: For 2700/2700 co-relation queries the response was YES. [2023-08-30 15:08:10,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 681 events. 378/681 cut-off events. For 2700/2700 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3315 event pairs, 238 based on Foata normal form. 36/717 useless extension candidates. Maximal degree in co-relation 2963. Up to 681 conditions per place. [2023-08-30 15:08:10,643 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 72 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-30 15:08:10,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 920 flow [2023-08-30 15:08:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-30 15:08:10,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371584699453552 [2023-08-30 15:08:10,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-30 15:08:10,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-30 15:08:10,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:10,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-30 15:08:10,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,648 INFO L175 Difference]: Start difference. First operand has 54 places, 82 transitions, 884 flow. Second operand 3 states and 240 transitions. [2023-08-30 15:08:10,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 920 flow [2023-08-30 15:08:10,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 884 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:10,661 INFO L231 Difference]: Finished difference. Result has 53 places, 73 transitions, 740 flow [2023-08-30 15:08:10,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=53, PETRI_TRANSITIONS=73} [2023-08-30 15:08:10,662 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2023-08-30 15:08:10,662 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 73 transitions, 740 flow [2023-08-30 15:08:10,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:10,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:10,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:10,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:10,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:10,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1567784935, now seen corresponding path program 1 times [2023-08-30 15:08:10,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:10,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069995540] [2023-08-30 15:08:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:10,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:10,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069995540] [2023-08-30 15:08:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069995540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:10,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:08:10,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702606579] [2023-08-30 15:08:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:08:10,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2023-08-30 15:08:10,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 73 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:10,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2023-08-30 15:08:10,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:11,072 INFO L130 PetriNetUnfolder]: 348/631 cut-off events. [2023-08-30 15:08:11,073 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-30 15:08:11,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 631 events. 348/631 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3032 event pairs, 226 based on Foata normal form. 20/651 useless extension candidates. Maximal degree in co-relation 2611. Up to 631 conditions per place. [2023-08-30 15:08:11,077 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 65 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-08-30 15:08:11,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 788 flow [2023-08-30 15:08:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-30 15:08:11,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353369763205829 [2023-08-30 15:08:11,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-30 15:08:11,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-30 15:08:11,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:11,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-30 15:08:11,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,082 INFO L175 Difference]: Start difference. First operand has 53 places, 73 transitions, 740 flow. Second operand 3 states and 239 transitions. [2023-08-30 15:08:11,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 788 flow [2023-08-30 15:08:11,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 781 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:11,090 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 651 flow [2023-08-30 15:08:11,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=651, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2023-08-30 15:08:11,091 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2023-08-30 15:08:11,091 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 651 flow [2023-08-30 15:08:11,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:11,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:11,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:08:11,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:11,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:11,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1288306910, now seen corresponding path program 1 times [2023-08-30 15:08:11,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:11,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481521443] [2023-08-30 15:08:11,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:11,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481521443] [2023-08-30 15:08:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481521443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:11,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399491892] [2023-08-30 15:08:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:11,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:11,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:11,210 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:11,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:08:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:11,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 15:08:11,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:11,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399491892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:11,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 8 [2023-08-30 15:08:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690419433] [2023-08-30 15:08:11,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:11,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 15:08:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 15:08:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:08:11,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 183 [2023-08-30 15:08:11,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:11,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 183 [2023-08-30 15:08:11,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:11,745 INFO L130 PetriNetUnfolder]: 449/818 cut-off events. [2023-08-30 15:08:11,745 INFO L131 PetriNetUnfolder]: For 3585/3585 co-relation queries the response was YES. [2023-08-30 15:08:11,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3377 conditions, 818 events. 449/818 cut-off events. For 3585/3585 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4124 event pairs, 59 based on Foata normal form. 110/928 useless extension candidates. Maximal degree in co-relation 3355. Up to 278 conditions per place. [2023-08-30 15:08:11,751 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 56 selfloop transitions, 43 changer transitions 9/108 dead transitions. [2023-08-30 15:08:11,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 1127 flow [2023-08-30 15:08:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:08:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:08:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 545 transitions. [2023-08-30 15:08:11,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722677595628415 [2023-08-30 15:08:11,753 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 545 transitions. [2023-08-30 15:08:11,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 545 transitions. [2023-08-30 15:08:11,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:11,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 545 transitions. [2023-08-30 15:08:11,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,758 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,758 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 651 flow. Second operand 8 states and 545 transitions. [2023-08-30 15:08:11,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 1127 flow [2023-08-30 15:08:11,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 1126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:11,768 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 1028 flow [2023-08-30 15:08:11,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1028, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-08-30 15:08:11,769 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-08-30 15:08:11,769 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 1028 flow [2023-08-30 15:08:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:11,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:11,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:11,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:11,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:11,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash 316232141, now seen corresponding path program 2 times [2023-08-30 15:08:11,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:11,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352956786] [2023-08-30 15:08:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:12,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:12,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352956786] [2023-08-30 15:08:12,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352956786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:12,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866586147] [2023-08-30 15:08:12,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:08:12,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:12,082 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:12,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:08:12,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:08:12,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:12,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 15:08:12,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:12,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866586147] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:12,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 15:08:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873872664] [2023-08-30 15:08:12,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 15:08:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 15:08:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-08-30 15:08:12,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 183 [2023-08-30 15:08:12,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 1028 flow. Second operand has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:12,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:12,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 183 [2023-08-30 15:08:12,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:13,492 INFO L130 PetriNetUnfolder]: 699/1200 cut-off events. [2023-08-30 15:08:13,493 INFO L131 PetriNetUnfolder]: For 8663/8663 co-relation queries the response was YES. [2023-08-30 15:08:13,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 1200 events. 699/1200 cut-off events. For 8663/8663 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6207 event pairs, 53 based on Foata normal form. 52/1252 useless extension candidates. Maximal degree in co-relation 6277. Up to 374 conditions per place. [2023-08-30 15:08:13,503 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 78 selfloop transitions, 119 changer transitions 13/210 dead transitions. [2023-08-30 15:08:13,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 210 transitions, 2880 flow [2023-08-30 15:08:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 15:08:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 15:08:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1014 transitions. [2023-08-30 15:08:13,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693989071038251 [2023-08-30 15:08:13,506 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1014 transitions. [2023-08-30 15:08:13,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1014 transitions. [2023-08-30 15:08:13,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:13,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1014 transitions. [2023-08-30 15:08:13,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.6) internal successors, (1014), 15 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,514 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,514 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 1028 flow. Second operand 15 states and 1014 transitions. [2023-08-30 15:08:13,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 210 transitions, 2880 flow [2023-08-30 15:08:13,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 210 transitions, 2836 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:13,536 INFO L231 Difference]: Finished difference. Result has 82 places, 162 transitions, 2653 flow [2023-08-30 15:08:13,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2653, PETRI_PLACES=82, PETRI_TRANSITIONS=162} [2023-08-30 15:08:13,537 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2023-08-30 15:08:13,537 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 162 transitions, 2653 flow [2023-08-30 15:08:13,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:13,538 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:13,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:08:13,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:13,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:13,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1044463734, now seen corresponding path program 1 times [2023-08-30 15:08:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:13,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487745957] [2023-08-30 15:08:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:08:13,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487745957] [2023-08-30 15:08:13,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487745957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:13,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:13,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:08:13,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531799886] [2023-08-30 15:08:13,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:13,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:13,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:13,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:08:13,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-08-30 15:08:13,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 162 transitions, 2653 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:13,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-08-30 15:08:13,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:14,051 INFO L130 PetriNetUnfolder]: 613/1086 cut-off events. [2023-08-30 15:08:14,052 INFO L131 PetriNetUnfolder]: For 9839/9839 co-relation queries the response was YES. [2023-08-30 15:08:14,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6095 conditions, 1086 events. 613/1086 cut-off events. For 9839/9839 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5702 event pairs, 337 based on Foata normal form. 70/1156 useless extension candidates. Maximal degree in co-relation 6069. Up to 1086 conditions per place. [2023-08-30 15:08:14,060 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 127 selfloop transitions, 1 changer transitions 11/139 dead transitions. [2023-08-30 15:08:14,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 139 transitions, 2467 flow [2023-08-30 15:08:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-08-30 15:08:14,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225865209471767 [2023-08-30 15:08:14,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-08-30 15:08:14,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-08-30 15:08:14,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:14,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-08-30 15:08:14,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:14,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:14,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:14,064 INFO L175 Difference]: Start difference. First operand has 82 places, 162 transitions, 2653 flow. Second operand 3 states and 232 transitions. [2023-08-30 15:08:14,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 139 transitions, 2467 flow [2023-08-30 15:08:14,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 139 transitions, 2184 flow, removed 119 selfloop flow, removed 4 redundant places. [2023-08-30 15:08:14,098 INFO L231 Difference]: Finished difference. Result has 78 places, 128 transitions, 1740 flow [2023-08-30 15:08:14,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1740, PETRI_PLACES=78, PETRI_TRANSITIONS=128} [2023-08-30 15:08:14,100 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2023-08-30 15:08:14,100 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 128 transitions, 1740 flow [2023-08-30 15:08:14,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:14,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:14,100 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:14,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:08:14,101 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:14,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:14,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1356694143, now seen corresponding path program 2 times [2023-08-30 15:08:14,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:14,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626590610] [2023-08-30 15:08:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:14,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626590610] [2023-08-30 15:08:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626590610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639162950] [2023-08-30 15:08:14,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:08:14,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:14,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:14,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:08:14,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:08:14,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:14,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:08:14,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:14,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639162950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:15,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 12 [2023-08-30 15:08:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976111106] [2023-08-30 15:08:15,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:15,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:08:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:08:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:08:15,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 183 [2023-08-30 15:08:15,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 128 transitions, 1740 flow. Second operand has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:15,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:15,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 183 [2023-08-30 15:08:15,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:15,860 INFO L130 PetriNetUnfolder]: 843/1512 cut-off events. [2023-08-30 15:08:15,861 INFO L131 PetriNetUnfolder]: For 8959/8959 co-relation queries the response was YES. [2023-08-30 15:08:15,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7153 conditions, 1512 events. 843/1512 cut-off events. For 8959/8959 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8555 event pairs, 117 based on Foata normal form. 170/1682 useless extension candidates. Maximal degree in co-relation 7129. Up to 496 conditions per place. [2023-08-30 15:08:15,871 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 90 selfloop transitions, 130 changer transitions 34/254 dead transitions. [2023-08-30 15:08:15,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 254 transitions, 3385 flow [2023-08-30 15:08:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:08:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:08:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 857 transitions. [2023-08-30 15:08:15,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36023539302227825 [2023-08-30 15:08:15,874 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 857 transitions. [2023-08-30 15:08:15,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 857 transitions. [2023-08-30 15:08:15,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:15,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 857 transitions. [2023-08-30 15:08:15,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.92307692307692) internal successors, (857), 13 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:15,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:15,880 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:15,880 INFO L175 Difference]: Start difference. First operand has 78 places, 128 transitions, 1740 flow. Second operand 13 states and 857 transitions. [2023-08-30 15:08:15,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 254 transitions, 3385 flow [2023-08-30 15:08:15,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 254 transitions, 3354 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:15,913 INFO L231 Difference]: Finished difference. Result has 99 places, 183 transitions, 3067 flow [2023-08-30 15:08:15,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3067, PETRI_PLACES=99, PETRI_TRANSITIONS=183} [2023-08-30 15:08:15,914 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2023-08-30 15:08:15,914 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 183 transitions, 3067 flow [2023-08-30 15:08:15,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:15,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:15,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:15,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:16,120 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,SelfDestructingSolverStorable10 [2023-08-30 15:08:16,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:16,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1213234553, now seen corresponding path program 1 times [2023-08-30 15:08:16,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737369323] [2023-08-30 15:08:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:16,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737369323] [2023-08-30 15:08:16,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737369323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934731870] [2023-08-30 15:08:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:16,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:16,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:16,258 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 15:08:16,281 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 15:08:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:16,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:08:16,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:16,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:17,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934731870] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:17,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:17,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 15:08:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506810062] [2023-08-30 15:08:17,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:08:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:08:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:08:17,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-08-30 15:08:17,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 183 transitions, 3067 flow. Second operand has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:17,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:17,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-08-30 15:08:17,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:18,024 INFO L130 PetriNetUnfolder]: 971/1750 cut-off events. [2023-08-30 15:08:18,025 INFO L131 PetriNetUnfolder]: For 14430/14430 co-relation queries the response was YES. [2023-08-30 15:08:18,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10130 conditions, 1750 events. 971/1750 cut-off events. For 14430/14430 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10430 event pairs, 71 based on Foata normal form. 70/1820 useless extension candidates. Maximal degree in co-relation 10096. Up to 540 conditions per place. [2023-08-30 15:08:18,043 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 96 selfloop transitions, 152 changer transitions 73/321 dead transitions. [2023-08-30 15:08:18,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 321 transitions, 5188 flow [2023-08-30 15:08:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:08:18,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:08:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 810 transitions. [2023-08-30 15:08:18,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34047919293820933 [2023-08-30 15:08:18,046 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 810 transitions. [2023-08-30 15:08:18,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 810 transitions. [2023-08-30 15:08:18,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:18,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 810 transitions. [2023-08-30 15:08:18,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.30769230769231) internal successors, (810), 13 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:18,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:18,053 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:18,054 INFO L175 Difference]: Start difference. First operand has 99 places, 183 transitions, 3067 flow. Second operand 13 states and 810 transitions. [2023-08-30 15:08:18,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 321 transitions, 5188 flow [2023-08-30 15:08:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 321 transitions, 4841 flow, removed 86 selfloop flow, removed 7 redundant places. [2023-08-30 15:08:18,141 INFO L231 Difference]: Finished difference. Result has 111 places, 224 transitions, 4090 flow [2023-08-30 15:08:18,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4090, PETRI_PLACES=111, PETRI_TRANSITIONS=224} [2023-08-30 15:08:18,142 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-08-30 15:08:18,142 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 224 transitions, 4090 flow [2023-08-30 15:08:18,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:18,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:18,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 15:08:18,150 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 15:08:18,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:18,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:18,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1043540208, now seen corresponding path program 1 times [2023-08-30 15:08:18,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:18,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274131788] [2023-08-30 15:08:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:18,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:18,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:18,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274131788] [2023-08-30 15:08:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274131788] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:18,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614674428] [2023-08-30 15:08:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:18,514 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:18,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:08:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:18,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 15:08:18,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:18,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:19,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614674428] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:19,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:19,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-30 15:08:19,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876555875] [2023-08-30 15:08:19,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:19,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 15:08:19,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 15:08:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-08-30 15:08:19,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-08-30 15:08:19,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 224 transitions, 4090 flow. Second operand has 16 states, 16 states have (on average 56.625) internal successors, (906), 16 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:19,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:19,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-08-30 15:08:19,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:20,655 INFO L130 PetriNetUnfolder]: 1653/2862 cut-off events. [2023-08-30 15:08:20,655 INFO L131 PetriNetUnfolder]: For 26904/26904 co-relation queries the response was YES. [2023-08-30 15:08:20,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19359 conditions, 2862 events. 1653/2862 cut-off events. For 26904/26904 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 17463 event pairs, 65 based on Foata normal form. 138/3000 useless extension candidates. Maximal degree in co-relation 19322. Up to 725 conditions per place. [2023-08-30 15:08:20,683 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 159 selfloop transitions, 316 changer transitions 108/583 dead transitions. [2023-08-30 15:08:20,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 583 transitions, 10886 flow [2023-08-30 15:08:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 15:08:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 15:08:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1538 transitions. [2023-08-30 15:08:20,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33617486338797814 [2023-08-30 15:08:20,689 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1538 transitions. [2023-08-30 15:08:20,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1538 transitions. [2023-08-30 15:08:20,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:20,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1538 transitions. [2023-08-30 15:08:20,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 61.52) internal successors, (1538), 25 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:20,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:20,700 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:20,700 INFO L175 Difference]: Start difference. First operand has 111 places, 224 transitions, 4090 flow. Second operand 25 states and 1538 transitions. [2023-08-30 15:08:20,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 583 transitions, 10886 flow [2023-08-30 15:08:20,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 583 transitions, 10154 flow, removed 337 selfloop flow, removed 6 redundant places. [2023-08-30 15:08:20,867 INFO L231 Difference]: Finished difference. Result has 141 places, 429 transitions, 8797 flow [2023-08-30 15:08:20,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8797, PETRI_PLACES=141, PETRI_TRANSITIONS=429} [2023-08-30 15:08:20,868 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 117 predicate places. [2023-08-30 15:08:20,868 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 429 transitions, 8797 flow [2023-08-30 15:08:20,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.625) internal successors, (906), 16 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:20,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:20,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:20,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 15:08:21,073 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:21,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1213263383, now seen corresponding path program 2 times [2023-08-30 15:08:21,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502406500] [2023-08-30 15:08:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502406500] [2023-08-30 15:08:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502406500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82609387] [2023-08-30 15:08:21,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:08:21,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:21,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:21,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:21,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:08:21,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:08:21,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:21,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:08:21,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:21,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:21,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82609387] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:21,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:21,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 15:08:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589906149] [2023-08-30 15:08:21,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:08:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:21,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:08:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:08:21,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-08-30 15:08:21,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 429 transitions, 8797 flow. Second operand has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:21,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:21,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-08-30 15:08:21,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:22,909 INFO L130 PetriNetUnfolder]: 1402/2581 cut-off events. [2023-08-30 15:08:22,910 INFO L131 PetriNetUnfolder]: For 29934/29934 co-relation queries the response was YES. [2023-08-30 15:08:22,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20177 conditions, 2581 events. 1402/2581 cut-off events. For 29934/29934 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 16545 event pairs, 40 based on Foata normal form. 94/2675 useless extension candidates. Maximal degree in co-relation 20131. Up to 950 conditions per place. [2023-08-30 15:08:22,940 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 234 selfloop transitions, 289 changer transitions 57/580 dead transitions. [2023-08-30 15:08:22,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 580 transitions, 12470 flow [2023-08-30 15:08:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 15:08:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 15:08:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 919 transitions. [2023-08-30 15:08:22,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3347905282331512 [2023-08-30 15:08:22,943 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 919 transitions. [2023-08-30 15:08:22,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 919 transitions. [2023-08-30 15:08:22,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:22,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 919 transitions. [2023-08-30 15:08:22,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 61.266666666666666) internal successors, (919), 15 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:22,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:22,949 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:22,949 INFO L175 Difference]: Start difference. First operand has 141 places, 429 transitions, 8797 flow. Second operand 15 states and 919 transitions. [2023-08-30 15:08:22,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 580 transitions, 12470 flow [2023-08-30 15:08:23,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 580 transitions, 11606 flow, removed 250 selfloop flow, removed 11 redundant places. [2023-08-30 15:08:23,269 INFO L231 Difference]: Finished difference. Result has 148 places, 490 transitions, 10615 flow [2023-08-30 15:08:23,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7560, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10615, PETRI_PLACES=148, PETRI_TRANSITIONS=490} [2023-08-30 15:08:23,270 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 124 predicate places. [2023-08-30 15:08:23,270 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 490 transitions, 10615 flow [2023-08-30 15:08:23,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:23,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:23,270 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:23,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:23,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 15:08:23,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:23,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1044433973, now seen corresponding path program 3 times [2023-08-30 15:08:23,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533659881] [2023-08-30 15:08:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:23,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:23,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533659881] [2023-08-30 15:08:23,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533659881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:23,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682540459] [2023-08-30 15:08:23,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:08:23,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:23,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:23,729 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:23,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 15:08:23,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 15:08:23,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:23,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:08:23,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:23,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682540459] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:24,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:24,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-30 15:08:24,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878524321] [2023-08-30 15:08:24,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:24,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 15:08:24,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:24,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 15:08:24,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2023-08-30 15:08:24,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 183 [2023-08-30 15:08:24,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 490 transitions, 10615 flow. Second operand has 16 states, 16 states have (on average 60.6875) internal successors, (971), 16 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:24,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:24,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 183 [2023-08-30 15:08:24,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:25,805 INFO L130 PetriNetUnfolder]: 1431/2666 cut-off events. [2023-08-30 15:08:25,805 INFO L131 PetriNetUnfolder]: For 32120/32120 co-relation queries the response was YES. [2023-08-30 15:08:25,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23328 conditions, 2666 events. 1431/2666 cut-off events. For 32120/32120 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17485 event pairs, 0 based on Foata normal form. 106/2772 useless extension candidates. Maximal degree in co-relation 23280. Up to 841 conditions per place. [2023-08-30 15:08:25,835 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 242 selfloop transitions, 448 changer transitions 42/732 dead transitions. [2023-08-30 15:08:25,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 732 transitions, 16851 flow [2023-08-30 15:08:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:08:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:08:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2023-08-30 15:08:25,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35687263556116017 [2023-08-30 15:08:25,838 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2023-08-30 15:08:25,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2023-08-30 15:08:25,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:25,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2023-08-30 15:08:25,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:25,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:25,890 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:25,890 INFO L175 Difference]: Start difference. First operand has 148 places, 490 transitions, 10615 flow. Second operand 13 states and 849 transitions. [2023-08-30 15:08:25,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 732 transitions, 16851 flow [2023-08-30 15:08:26,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 732 transitions, 16448 flow, removed 126 selfloop flow, removed 8 redundant places. [2023-08-30 15:08:26,231 INFO L231 Difference]: Finished difference. Result has 161 places, 662 transitions, 16308 flow [2023-08-30 15:08:26,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=9998, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16308, PETRI_PLACES=161, PETRI_TRANSITIONS=662} [2023-08-30 15:08:26,232 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 137 predicate places. [2023-08-30 15:08:26,233 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 662 transitions, 16308 flow [2023-08-30 15:08:26,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 60.6875) internal successors, (971), 16 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:26,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:26,233 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:26,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:26,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:08:26,439 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:26,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1981364216, now seen corresponding path program 4 times [2023-08-30 15:08:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56817993] [2023-08-30 15:08:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:26,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56817993] [2023-08-30 15:08:26,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56817993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762395464] [2023-08-30 15:08:26,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 15:08:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:26,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:26,695 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:26,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 15:08:26,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 15:08:26,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:26,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 15:08:26,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:26,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:27,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762395464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:27,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:27,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-30 15:08:27,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075009893] [2023-08-30 15:08:27,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:27,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 15:08:27,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 15:08:27,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-08-30 15:08:27,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 183 [2023-08-30 15:08:27,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 662 transitions, 16308 flow. Second operand has 16 states, 16 states have (on average 59.8125) internal successors, (957), 16 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:27,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:27,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 183 [2023-08-30 15:08:27,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:29,052 INFO L130 PetriNetUnfolder]: 2218/3799 cut-off events. [2023-08-30 15:08:29,052 INFO L131 PetriNetUnfolder]: For 61002/61002 co-relation queries the response was YES. [2023-08-30 15:08:29,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40360 conditions, 3799 events. 2218/3799 cut-off events. For 61002/61002 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 23622 event pairs, 2 based on Foata normal form. 100/3899 useless extension candidates. Maximal degree in co-relation 40306. Up to 1139 conditions per place. [2023-08-30 15:08:29,092 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 452 selfloop transitions, 688 changer transitions 39/1179 dead transitions. [2023-08-30 15:08:29,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1179 transitions, 31360 flow [2023-08-30 15:08:29,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 15:08:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 15:08:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 968 transitions. [2023-08-30 15:08:29,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35264116575591986 [2023-08-30 15:08:29,095 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 968 transitions. [2023-08-30 15:08:29,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 968 transitions. [2023-08-30 15:08:29,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:29,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 968 transitions. [2023-08-30 15:08:29,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 64.53333333333333) internal successors, (968), 15 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 15:08:29,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:29,100 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:29,100 INFO L175 Difference]: Start difference. First operand has 161 places, 662 transitions, 16308 flow. Second operand 15 states and 968 transitions. [2023-08-30 15:08:29,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 1179 transitions, 31360 flow [2023-08-30 15:08:29,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 1179 transitions, 30003 flow, removed 533 selfloop flow, removed 5 redundant places. [2023-08-30 15:08:29,817 INFO L231 Difference]: Finished difference. Result has 181 places, 1030 transitions, 28509 flow [2023-08-30 15:08:29,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=15459, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=28509, PETRI_PLACES=181, PETRI_TRANSITIONS=1030} [2023-08-30 15:08:29,819 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 157 predicate places. [2023-08-30 15:08:29,819 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 1030 transitions, 28509 flow [2023-08-30 15:08:29,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.8125) internal successors, (957), 16 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:29,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:29,819 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-30 15:08:29,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:30,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 15:08:30,024 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:30,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1982316565, now seen corresponding path program 3 times [2023-08-30 15:08:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965627012] [2023-08-30 15:08:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:30,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:30,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965627012] [2023-08-30 15:08:30,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965627012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:30,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989922766] [2023-08-30 15:08:30,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:08:30,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:30,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:30,313 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:30,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 15:08:30,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 15:08:30,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:30,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:08:30,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:30,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989922766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:31,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 16 [2023-08-30 15:08:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94387227] [2023-08-30 15:08:31,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 15:08:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 15:08:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-08-30 15:08:31,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-08-30 15:08:31,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 1030 transitions, 28509 flow. Second operand has 17 states, 17 states have (on average 56.76470588235294) internal successors, (965), 17 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:31,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:31,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-08-30 15:08:31,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:34,981 INFO L130 PetriNetUnfolder]: 2757/4836 cut-off events. [2023-08-30 15:08:34,981 INFO L131 PetriNetUnfolder]: For 113288/113288 co-relation queries the response was YES. [2023-08-30 15:08:35,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53594 conditions, 4836 events. 2757/4836 cut-off events. For 113288/113288 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 32338 event pairs, 0 based on Foata normal form. 298/5134 useless extension candidates. Maximal degree in co-relation 53532. Up to 1423 conditions per place. [2023-08-30 15:08:35,026 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 336 selfloop transitions, 1042 changer transitions 71/1449 dead transitions. [2023-08-30 15:08:35,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1449 transitions, 41614 flow [2023-08-30 15:08:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-30 15:08:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-30 15:08:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1740 transitions. [2023-08-30 15:08:35,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32786885245901637 [2023-08-30 15:08:35,031 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1740 transitions. [2023-08-30 15:08:35,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1740 transitions. [2023-08-30 15:08:35,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:35,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1740 transitions. [2023-08-30 15:08:35,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 60.0) internal successors, (1740), 29 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:35,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:35,041 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:35,041 INFO L175 Difference]: Start difference. First operand has 181 places, 1030 transitions, 28509 flow. Second operand 29 states and 1740 transitions. [2023-08-30 15:08:35,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1449 transitions, 41614 flow [2023-08-30 15:08:35,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1449 transitions, 41096 flow, removed 213 selfloop flow, removed 4 redundant places. [2023-08-30 15:08:35,990 INFO L231 Difference]: Finished difference. Result has 217 places, 1324 transitions, 40876 flow [2023-08-30 15:08:35,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=25935, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=679, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=40876, PETRI_PLACES=217, PETRI_TRANSITIONS=1324} [2023-08-30 15:08:35,991 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 193 predicate places. [2023-08-30 15:08:35,991 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 1324 transitions, 40876 flow [2023-08-30 15:08:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.76470588235294) internal successors, (965), 17 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:35,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:35,992 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-30 15:08:35,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:36,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:36,198 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:36,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1293644849, now seen corresponding path program 2 times [2023-08-30 15:08:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257526737] [2023-08-30 15:08:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257526737] [2023-08-30 15:08:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257526737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112004050] [2023-08-30 15:08:36,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:08:36,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:36,533 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:36,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 15:08:36,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:08:36,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:36,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 15:08:36,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:37,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:37,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112004050] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:37,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:37,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 16 [2023-08-30 15:08:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781588693] [2023-08-30 15:08:37,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:37,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 15:08:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 15:08:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-08-30 15:08:37,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 183 [2023-08-30 15:08:37,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1324 transitions, 40876 flow. Second operand has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:37,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:37,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 183 [2023-08-30 15:08:37,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:39,918 INFO L130 PetriNetUnfolder]: 2470/4183 cut-off events. [2023-08-30 15:08:39,918 INFO L131 PetriNetUnfolder]: For 117341/117341 co-relation queries the response was YES. [2023-08-30 15:08:39,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53960 conditions, 4183 events. 2470/4183 cut-off events. For 117341/117341 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 26095 event pairs, 0 based on Foata normal form. 308/4491 useless extension candidates. Maximal degree in co-relation 53888. Up to 1599 conditions per place. [2023-08-30 15:08:39,966 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 359 selfloop transitions, 1038 changer transitions 32/1429 dead transitions. [2023-08-30 15:08:39,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 1429 transitions, 46033 flow [2023-08-30 15:08:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 15:08:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 15:08:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1152 transitions. [2023-08-30 15:08:39,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31475409836065577 [2023-08-30 15:08:39,968 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1152 transitions. [2023-08-30 15:08:39,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1152 transitions. [2023-08-30 15:08:39,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:39,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1152 transitions. [2023-08-30 15:08:39,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.6) internal successors, (1152), 20 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:39,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:39,976 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:39,976 INFO L175 Difference]: Start difference. First operand has 217 places, 1324 transitions, 40876 flow. Second operand 20 states and 1152 transitions. [2023-08-30 15:08:39,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 1429 transitions, 46033 flow [2023-08-30 15:08:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 1429 transitions, 44111 flow, removed 863 selfloop flow, removed 11 redundant places. [2023-08-30 15:08:41,228 INFO L231 Difference]: Finished difference. Result has 232 places, 1344 transitions, 43790 flow [2023-08-30 15:08:41,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=36471, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=913, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=43790, PETRI_PLACES=232, PETRI_TRANSITIONS=1344} [2023-08-30 15:08:41,229 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 208 predicate places. [2023-08-30 15:08:41,229 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 1344 transitions, 43790 flow [2023-08-30 15:08:41,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:41,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:41,230 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-08-30 15:08:41,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:41,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:08:41,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:41,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1420579546, now seen corresponding path program 3 times [2023-08-30 15:08:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:41,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255910391] [2023-08-30 15:08:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:41,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:08:41,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:41,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255910391] [2023-08-30 15:08:41,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255910391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:41,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243069101] [2023-08-30 15:08:41,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:08:41,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:41,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:41,693 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:41,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 15:08:41,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 15:08:41,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:41,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 15:08:41,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:42,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:08:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243069101] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:42,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:42,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 16 [2023-08-30 15:08:42,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537042258] [2023-08-30 15:08:42,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:42,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 15:08:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:42,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 15:08:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2023-08-30 15:08:43,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 183 [2023-08-30 15:08:43,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1344 transitions, 43790 flow. Second operand has 17 states, 17 states have (on average 54.529411764705884) internal successors, (927), 17 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:43,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:43,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 183 [2023-08-30 15:08:43,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:44,690 INFO L130 PetriNetUnfolder]: 2195/3696 cut-off events. [2023-08-30 15:08:44,690 INFO L131 PetriNetUnfolder]: For 115120/115120 co-relation queries the response was YES. [2023-08-30 15:08:44,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51421 conditions, 3696 events. 2195/3696 cut-off events. For 115120/115120 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 22409 event pairs, 0 based on Foata normal form. 106/3802 useless extension candidates. Maximal degree in co-relation 51346. Up to 3490 conditions per place. [2023-08-30 15:08:44,744 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 1170 selfloop transitions, 93 changer transitions 16/1279 dead transitions. [2023-08-30 15:08:44,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1279 transitions, 44559 flow [2023-08-30 15:08:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:08:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:08:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 460 transitions. [2023-08-30 15:08:44,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31420765027322406 [2023-08-30 15:08:44,745 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 460 transitions. [2023-08-30 15:08:44,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 460 transitions. [2023-08-30 15:08:44,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:44,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 460 transitions. [2023-08-30 15:08:44,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:44,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:44,749 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:44,749 INFO L175 Difference]: Start difference. First operand has 232 places, 1344 transitions, 43790 flow. Second operand 8 states and 460 transitions. [2023-08-30 15:08:44,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1279 transitions, 44559 flow [2023-08-30 15:08:46,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1279 transitions, 41139 flow, removed 415 selfloop flow, removed 19 redundant places. [2023-08-30 15:08:46,366 INFO L231 Difference]: Finished difference. Result has 205 places, 1254 transitions, 38464 flow [2023-08-30 15:08:46,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=38531, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=38464, PETRI_PLACES=205, PETRI_TRANSITIONS=1254} [2023-08-30 15:08:46,368 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 181 predicate places. [2023-08-30 15:08:46,368 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 1254 transitions, 38464 flow [2023-08-30 15:08:46,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.529411764705884) internal successors, (927), 17 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:46,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:46,368 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1] [2023-08-30 15:08:46,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:46,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:46,569 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:08:46,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1492492627, now seen corresponding path program 3 times [2023-08-30 15:08:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:46,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106027125] [2023-08-30 15:08:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:46,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:08:47,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:47,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106027125] [2023-08-30 15:08:47,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106027125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:47,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380336773] [2023-08-30 15:08:47,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:08:47,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:47,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:47,015 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:47,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 15:08:47,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 15:08:47,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:47,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 15:08:47,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:08:47,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:08:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380336773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:48,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:48,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 15:08:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727369947] [2023-08-30 15:08:48,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 15:08:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 15:08:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-08-30 15:08:48,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 183 [2023-08-30 15:08:48,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1254 transitions, 38464 flow. Second operand has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:48,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:48,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 183 [2023-08-30 15:08:48,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:49,941 INFO L130 PetriNetUnfolder]: 2056/3439 cut-off events. [2023-08-30 15:08:49,942 INFO L131 PetriNetUnfolder]: For 90581/90581 co-relation queries the response was YES. [2023-08-30 15:08:49,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45588 conditions, 3439 events. 2056/3439 cut-off events. For 90581/90581 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 20553 event pairs, 0 based on Foata normal form. 74/3513 useless extension candidates. Maximal degree in co-relation 45523. Up to 1676 conditions per place. [2023-08-30 15:08:49,969 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 0 selfloop transitions, 0 changer transitions 1229/1229 dead transitions. [2023-08-30 15:08:49,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1229 transitions, 40163 flow [2023-08-30 15:08:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:08:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:08:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 566 transitions. [2023-08-30 15:08:49,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3092896174863388 [2023-08-30 15:08:49,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 566 transitions. [2023-08-30 15:08:49,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 566 transitions. [2023-08-30 15:08:49,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:49,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 566 transitions. [2023-08-30 15:08:49,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.6) internal successors, (566), 10 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:49,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:49,973 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:49,973 INFO L175 Difference]: Start difference. First operand has 205 places, 1254 transitions, 38464 flow. Second operand 10 states and 566 transitions. [2023-08-30 15:08:49,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1229 transitions, 40163 flow [2023-08-30 15:08:51,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 1229 transitions, 38416 flow, removed 232 selfloop flow, removed 10 redundant places. [2023-08-30 15:08:51,147 INFO L231 Difference]: Finished difference. Result has 195 places, 0 transitions, 0 flow [2023-08-30 15:08:51,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=35490, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=195, PETRI_TRANSITIONS=0} [2023-08-30 15:08:51,148 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 171 predicate places. [2023-08-30 15:08:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 0 transitions, 0 flow [2023-08-30 15:08:51,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:51,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 15:08:51,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 15:08:51,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 15:08:51,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 15:08:51,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 15:08:51,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 15:08:51,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 15:08:51,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 15:08:51,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-30 15:08:51,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 15:08:51,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 15:08:51,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 15:08:51,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 15:08:51,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 15:08:51,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 15:08:51,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 15:08:51,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 15:08:51,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 15:08:51,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:51,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:51,357 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:51,360 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:08:51,360 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:08:51,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:08:51 BasicIcfg [2023-08-30 15:08:51,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:08:51,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:08:51,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:08:51,363 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:08:51,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:08:01" (3/4) ... [2023-08-30 15:08:51,365 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:08:51,369 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:08:51,369 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:08:51,373 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-30 15:08:51,373 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:08:51,373 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:08:51,373 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:08:51,399 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:08:51,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:08:51,400 INFO L158 Benchmark]: Toolchain (without parser) took 50681.91ms. Allocated memory was 71.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 47.1MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 424.6MB. Max. memory is 16.1GB. [2023-08-30 15:08:51,400 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 58.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:08:51,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.57ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 35.9MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 15:08:51,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.66ms. Allocated memory is still 71.3MB. Free memory was 35.9MB in the beginning and 34.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:08:51,401 INFO L158 Benchmark]: Boogie Preprocessor took 42.47ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 51.4MB in the end (delta: -17.0MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2023-08-30 15:08:51,401 INFO L158 Benchmark]: RCFGBuilder took 508.28ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 34.9MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 15:08:51,402 INFO L158 Benchmark]: TraceAbstraction took 49770.30ms. Allocated memory was 71.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 34.4MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 15:08:51,402 INFO L158 Benchmark]: Witness Printer took 36.90ms. Allocated memory is still 1.7GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 15:08:51,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 58.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.57ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 35.9MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.66ms. Allocated memory is still 71.3MB. Free memory was 35.9MB in the beginning and 34.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.47ms. Allocated memory is still 71.3MB. Free memory was 34.5MB in the beginning and 51.4MB in the end (delta: -17.0MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * RCFGBuilder took 508.28ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 34.9MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 49770.30ms. Allocated memory was 71.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 34.4MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 36.90ms. Allocated memory is still 1.7GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 77 PlacesBefore, 24 PlacesAfterwards, 80 TransitionsBefore, 19 TransitionsAfterwards, 1628 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 85 TotalNumberOfCompositions, 1693 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1612, independent: 1606, independent conditional: 0, independent unconditional: 1606, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 779, independent: 774, independent conditional: 0, independent unconditional: 774, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1612, independent: 832, independent conditional: 0, independent unconditional: 832, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 779, unknown conditional: 0, unknown unconditional: 779] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: 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, 126 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 49.6s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2986 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2671 mSDsluCounter, 1040 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 850 mSDsCounter, 917 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5190 IncrementalHoareTripleChecker+Invalid, 6107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 917 mSolverCounterUnsat, 190 mSDtfsCounter, 5190 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 160 SyntacticMatches, 5 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43790occurred in iteration=18, InterpolantAutomatonStates: 226, 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, 0.5s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 308 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 5166 SizeOfPredicates, 112 NumberOfNonLiveVariables, 1456 ConjunctsInSsa, 206 ConjunctsInUnsatCore, 54 InterpolantComputations, 5 PerfectInterpolantSequences, 67/241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:08:51,425 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