./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.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/test-easy11.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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --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 15:57:17,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:57:17,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:57:17,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:57:17,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:57:17,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:57:17,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:57:17,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:57:17,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:57:17,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:57:17,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:57:17,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:57:17,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:57:17,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:57:17,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:57:17,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:57:17,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:57:17,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:57:17,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:57:17,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:57:17,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:57:17,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:57:17,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:57:17,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:57:17,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:57:17,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:57:17,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:57:17,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:57:17,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:57:17,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:57:17,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:57:17,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:57:17,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:57:17,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:57:17,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:57:17,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:57:17,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:57:17,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:57:17,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:57:17,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:57:17,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:57:17,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:57:17,687 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:57:17,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:57:17,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:57:17,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:57:17,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:57:17,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:57:17,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:57:17,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:57:17,691 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:57:17,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:57:17,691 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:57:17,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:57:17,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:57:17,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:57:17,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:57:17,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:57:17,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:57:17,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:57:17,693 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:57:17,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:57:17,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:57:17,693 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:57:17,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:57:17,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:57:17,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:57:17,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:57:17,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:57:17,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:57:17,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:57:17,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:57:17,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:57:17,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:57:17,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:57:17,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:57:17,696 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:57:17,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:57:17,697 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:57:17,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:57:18,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:57:18,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:57:18,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:57:18,031 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:57:18,031 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:57:18,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 15:57:19,174 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:57:19,359 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:57:19,360 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-08-30 15:57:19,367 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd7dd741/fe7e73e15158460496c9d8b606a1c4da/FLAGe62b3dede [2023-08-30 15:57:19,379 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd7dd741/fe7e73e15158460496c9d8b606a1c4da [2023-08-30 15:57:19,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:57:19,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:57:19,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:57:19,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:57:19,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:57:19,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d435df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19, skipping insertion in model container [2023-08-30 15:57:19,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:57:19,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:57:19,554 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/test-easy11.wvr.c[2005,2018] [2023-08-30 15:57:19,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:57:19,566 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:57:19,597 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/test-easy11.wvr.c[2005,2018] [2023-08-30 15:57:19,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:57:19,606 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:57:19,606 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:57:19,611 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:57:19,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19 WrapperNode [2023-08-30 15:57:19,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:57:19,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:57:19,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:57:19,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:57:19,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,647 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-08-30 15:57:19,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:57:19,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:57:19,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:57:19,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:57:19,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,688 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:57:19,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:57:19,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:57:19,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:57:19,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (1/1) ... [2023-08-30 15:57:19,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:57:19,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:19,726 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 15:57:19,741 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 15:57:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:57:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:57:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:57:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:57:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:57:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:57:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:57:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:57:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:57:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:57:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:57:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:57:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:57:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:57:19,774 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 15:57:19,872 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:57:19,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:57:20,070 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:57:20,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:57:20,109 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 15:57:20,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:57:20 BoogieIcfgContainer [2023-08-30 15:57:20,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:57:20,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:57:20,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:57:20,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:57:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:57:19" (1/3) ... [2023-08-30 15:57:20,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb4087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:57:20, skipping insertion in model container [2023-08-30 15:57:20,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:57:19" (2/3) ... [2023-08-30 15:57:20,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb4087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:57:20, skipping insertion in model container [2023-08-30 15:57:20,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:57:20" (3/3) ... [2023-08-30 15:57:20,122 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-08-30 15:57:20,135 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:57:20,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:57:20,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 15:57:20,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:57:20,252 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 15:57:20,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2023-08-30 15:57:20,366 INFO L130 PetriNetUnfolder]: 6/89 cut-off events. [2023-08-30 15:57:20,366 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:57:20,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 15:57:20,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 198 flow [2023-08-30 15:57:20,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 155 flow [2023-08-30 15:57:20,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:57:20,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 73 transitions, 155 flow [2023-08-30 15:57:20,399 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 73 transitions, 155 flow [2023-08-30 15:57:20,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 155 flow [2023-08-30 15:57:20,433 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-30 15:57:20,433 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:57:20,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 73 events. 5/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 15:57:20,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2023-08-30 15:57:22,844 INFO L134 LiptonReduction]: Checked pairs total: 1018 [2023-08-30 15:57:22,844 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-30 15:57:22,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:57:22,863 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;@51c997c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:57:22,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 15:57:22,868 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 15:57:22,868 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:57:22,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:22,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:57:22,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:22,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash 10735871, now seen corresponding path program 1 times [2023-08-30 15:57:22,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624449164] [2023-08-30 15:57:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:23,005 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 15:57:23,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624449164] [2023-08-30 15:57:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624449164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:23,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:57:23,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802818517] [2023-08-30 15:57:23,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:23,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 15:57:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 15:57:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 15:57:23,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-08-30 15:57:23,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:23,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-08-30 15:57:23,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:23,097 INFO L130 PetriNetUnfolder]: 133/230 cut-off events. [2023-08-30 15:57:23,097 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 15:57:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 230 events. 133/230 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 759 event pairs, 105 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 420. Up to 231 conditions per place. [2023-08-30 15:57:23,100 INFO L137 encePairwiseOnDemand]: 155/157 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-30 15:57:23,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 85 flow [2023-08-30 15:57:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 15:57:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 15:57:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 177 transitions. [2023-08-30 15:57:23,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636942675159236 [2023-08-30 15:57:23,112 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 177 transitions. [2023-08-30 15:57:23,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 177 transitions. [2023-08-30 15:57:23,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:23,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 177 transitions. [2023-08-30 15:57:23,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,121 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,123 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 2 states and 177 transitions. [2023-08-30 15:57:23,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 85 flow [2023-08-30 15:57:23,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:57:23,126 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2023-08-30 15:57:23,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-08-30 15:57:23,130 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2023-08-30 15:57:23,131 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2023-08-30 15:57:23,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:23,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:57:23,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:57:23,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:23,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash 10735884, now seen corresponding path program 1 times [2023-08-30 15:57:23,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:23,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063943069] [2023-08-30 15:57:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:23,258 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 15:57:23,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063943069] [2023-08-30 15:57:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063943069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:23,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:23,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:57:23,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196614242] [2023-08-30 15:57:23,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:23,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:57:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:57:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:57:23,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 157 [2023-08-30 15:57:23,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:23,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 157 [2023-08-30 15:57:23,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:23,394 INFO L130 PetriNetUnfolder]: 84/151 cut-off events. [2023-08-30 15:57:23,394 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:57:23,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 151 events. 84/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 499 event pairs, 7 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 311. Up to 78 conditions per place. [2023-08-30 15:57:23,397 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 32 selfloop transitions, 5 changer transitions 2/39 dead transitions. [2023-08-30 15:57:23,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 39 transitions, 164 flow [2023-08-30 15:57:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:57:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:57:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-08-30 15:57:23,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207006369426752 [2023-08-30 15:57:23,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-08-30 15:57:23,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-08-30 15:57:23,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:23,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-08-30 15:57:23,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,410 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 42 flow. Second operand 4 states and 327 transitions. [2023-08-30 15:57:23,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 39 transitions, 164 flow [2023-08-30 15:57:23,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:57:23,412 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 72 flow [2023-08-30 15:57:23,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-08-30 15:57:23,413 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-30 15:57:23,413 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 72 flow [2023-08-30 15:57:23,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:23,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:57:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:57:23,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:23,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 10735870, now seen corresponding path program 1 times [2023-08-30 15:57:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869731562] [2023-08-30 15:57:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:23,458 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 15:57:23,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:23,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869731562] [2023-08-30 15:57:23,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869731562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:23,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:57:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621386681] [2023-08-30 15:57:23,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:23,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:57:23,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:23,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:57:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:57:23,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 157 [2023-08-30 15:57:23,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:23,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 157 [2023-08-30 15:57:23,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:23,548 INFO L130 PetriNetUnfolder]: 62/113 cut-off events. [2023-08-30 15:57:23,548 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-30 15:57:23,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 113 events. 62/113 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 317 event pairs, 6 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 296. Up to 94 conditions per place. [2023-08-30 15:57:23,551 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 24 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-08-30 15:57:23,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 140 flow [2023-08-30 15:57:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:57:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:57:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 15:57:23,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015923566878981 [2023-08-30 15:57:23,553 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 15:57:23,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 15:57:23,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:23,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 15:57:23,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,558 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 72 flow. Second operand 4 states and 315 transitions. [2023-08-30 15:57:23,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 140 flow [2023-08-30 15:57:23,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:57:23,560 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 72 flow [2023-08-30 15:57:23,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-30 15:57:23,561 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-30 15:57:23,564 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 72 flow [2023-08-30 15:57:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:23,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:57:23,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:57:23,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:23,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1728787494, now seen corresponding path program 1 times [2023-08-30 15:57:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584994061] [2023-08-30 15:57:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:23,723 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 15:57:23,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584994061] [2023-08-30 15:57:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584994061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:23,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:23,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:57:23,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014186860] [2023-08-30 15:57:23,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:23,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:57:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:57:23,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:57:23,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 157 [2023-08-30 15:57:23,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:23,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 157 [2023-08-30 15:57:23,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:23,831 INFO L130 PetriNetUnfolder]: 54/101 cut-off events. [2023-08-30 15:57:23,831 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-08-30 15:57:23,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 101 events. 54/101 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 249 event pairs, 11 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 263. Up to 62 conditions per place. [2023-08-30 15:57:23,833 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-30 15:57:23,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 166 flow [2023-08-30 15:57:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:57:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:57:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-30 15:57:23,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015923566878981 [2023-08-30 15:57:23,835 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-30 15:57:23,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-30 15:57:23,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:23,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-30 15:57:23,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,838 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 72 flow. Second operand 4 states and 315 transitions. [2023-08-30 15:57:23,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 166 flow [2023-08-30 15:57:23,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:57:23,840 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 97 flow [2023-08-30 15:57:23,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-30 15:57:23,841 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-08-30 15:57:23,841 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 97 flow [2023-08-30 15:57:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:23,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:57:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:57:23,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:23,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1728787485, now seen corresponding path program 1 times [2023-08-30 15:57:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310300112] [2023-08-30 15:57:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:23,914 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 15:57:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:23,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310300112] [2023-08-30 15:57:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310300112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:23,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:57:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480920544] [2023-08-30 15:57:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:57:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:57:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:57:23,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 157 [2023-08-30 15:57:23,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:23,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 157 [2023-08-30 15:57:23,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:23,975 INFO L130 PetriNetUnfolder]: 43/82 cut-off events. [2023-08-30 15:57:23,976 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 15:57:23,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 82 events. 43/82 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 6 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 253. Up to 57 conditions per place. [2023-08-30 15:57:23,977 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 23 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-30 15:57:23,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 163 flow [2023-08-30 15:57:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:57:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:57:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-30 15:57:23,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968152866242038 [2023-08-30 15:57:23,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-30 15:57:23,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-30 15:57:23,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:23,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-30 15:57:23,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,981 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,981 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 97 flow. Second operand 4 states and 312 transitions. [2023-08-30 15:57:23,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 163 flow [2023-08-30 15:57:23,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:57:23,983 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 96 flow [2023-08-30 15:57:23,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-30 15:57:23,984 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-30 15:57:23,984 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 96 flow [2023-08-30 15:57:23,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:23,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:23,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:23,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:57:23,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:23,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2043019224, now seen corresponding path program 1 times [2023-08-30 15:57:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:23,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428417108] [2023-08-30 15:57:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:23,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:24,017 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 15:57:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428417108] [2023-08-30 15:57:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428417108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:24,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:24,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:57:24,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84475767] [2023-08-30 15:57:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:24,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:57:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:57:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:57:24,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-08-30 15:57:24,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:24,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-08-30 15:57:24,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:24,086 INFO L130 PetriNetUnfolder]: 39/72 cut-off events. [2023-08-30 15:57:24,086 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-08-30 15:57:24,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 72 events. 39/72 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 11 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 222. Up to 42 conditions per place. [2023-08-30 15:57:24,087 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 19 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2023-08-30 15:57:24,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 146 flow [2023-08-30 15:57:24,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:57:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:57:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-30 15:57:24,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286624203821656 [2023-08-30 15:57:24,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-30 15:57:24,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-30 15:57:24,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:24,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-30 15:57:24,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,103 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 96 flow. Second operand 4 states and 332 transitions. [2023-08-30 15:57:24,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 146 flow [2023-08-30 15:57:24,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:57:24,106 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 92 flow [2023-08-30 15:57:24,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-30 15:57:24,111 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-08-30 15:57:24,111 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 92 flow [2023-08-30 15:57:24,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:24,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:24,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:57:24,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:24,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2041347085, now seen corresponding path program 1 times [2023-08-30 15:57:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799066521] [2023-08-30 15:57:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:24,197 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 15:57:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:24,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799066521] [2023-08-30 15:57:24,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799066521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:24,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:24,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:57:24,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191522513] [2023-08-30 15:57:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:24,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:57:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:57:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:57:24,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 15:57:24,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:24,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 15:57:24,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:24,341 INFO L130 PetriNetUnfolder]: 42/79 cut-off events. [2023-08-30 15:57:24,341 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 15:57:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 79 events. 42/79 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 2 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 246. Up to 29 conditions per place. [2023-08-30 15:57:24,342 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 27 selfloop transitions, 11 changer transitions 0/38 dead transitions. [2023-08-30 15:57:24,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 221 flow [2023-08-30 15:57:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:57:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:57:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 551 transitions. [2023-08-30 15:57:24,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43869426751592355 [2023-08-30 15:57:24,344 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 551 transitions. [2023-08-30 15:57:24,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 551 transitions. [2023-08-30 15:57:24,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:24,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 551 transitions. [2023-08-30 15:57:24,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.875) internal successors, (551), 8 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,348 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,348 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 92 flow. Second operand 8 states and 551 transitions. [2023-08-30 15:57:24,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 221 flow [2023-08-30 15:57:24,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:57:24,350 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 130 flow [2023-08-30 15:57:24,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-08-30 15:57:24,351 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-30 15:57:24,351 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 130 flow [2023-08-30 15:57:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:24,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:24,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:57:24,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:24,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash -787943001, now seen corresponding path program 2 times [2023-08-30 15:57:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810690587] [2023-08-30 15:57:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:24,422 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 15:57:24,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:24,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810690587] [2023-08-30 15:57:24,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810690587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:24,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:24,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:57:24,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274105776] [2023-08-30 15:57:24,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:24,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:57:24,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:24,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:57:24,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:57:24,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 15:57:24,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:24,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 15:57:24,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:24,588 INFO L130 PetriNetUnfolder]: 52/95 cut-off events. [2023-08-30 15:57:24,588 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 15:57:24,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 95 events. 52/95 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 4 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 344. Up to 56 conditions per place. [2023-08-30 15:57:24,589 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 29 selfloop transitions, 14 changer transitions 0/43 dead transitions. [2023-08-30 15:57:24,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 285 flow [2023-08-30 15:57:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:57:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:57:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2023-08-30 15:57:24,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44187898089171973 [2023-08-30 15:57:24,592 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2023-08-30 15:57:24,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2023-08-30 15:57:24,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:24,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2023-08-30 15:57:24,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,596 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,596 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 130 flow. Second operand 8 states and 555 transitions. [2023-08-30 15:57:24,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 285 flow [2023-08-30 15:57:24,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 251 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 15:57:24,598 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 167 flow [2023-08-30 15:57:24,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-08-30 15:57:24,599 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-30 15:57:24,599 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 167 flow [2023-08-30 15:57:24,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:24,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:24,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:57:24,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:24,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:24,601 INFO L85 PathProgramCache]: Analyzing trace with hash -787943030, now seen corresponding path program 1 times [2023-08-30 15:57:24,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:24,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692884968] [2023-08-30 15:57:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:24,669 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 15:57:24,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692884968] [2023-08-30 15:57:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692884968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:24,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:57:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293610813] [2023-08-30 15:57:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:57:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:57:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:57:24,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 157 [2023-08-30 15:57:24,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:24,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 157 [2023-08-30 15:57:24,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:24,816 INFO L130 PetriNetUnfolder]: 53/98 cut-off events. [2023-08-30 15:57:24,816 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 15:57:24,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 98 events. 53/98 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 236 event pairs, 5 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 391. Up to 61 conditions per place. [2023-08-30 15:57:24,817 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2023-08-30 15:57:24,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 289 flow [2023-08-30 15:57:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:57:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:57:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-08-30 15:57:24,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222929936305734 [2023-08-30 15:57:24,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-08-30 15:57:24,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-08-30 15:57:24,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:24,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-08-30 15:57:24,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,823 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 167 flow. Second operand 6 states and 426 transitions. [2023-08-30 15:57:24,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 289 flow [2023-08-30 15:57:24,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 257 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 15:57:24,825 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 171 flow [2023-08-30 15:57:24,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-08-30 15:57:24,826 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-30 15:57:24,826 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 171 flow [2023-08-30 15:57:24,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:24,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:24,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:57:24,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:24,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -787546850, now seen corresponding path program 2 times [2023-08-30 15:57:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:24,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369766326] [2023-08-30 15:57:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:24,893 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 15:57:24,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:24,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369766326] [2023-08-30 15:57:24,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369766326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:24,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:24,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:57:24,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791337628] [2023-08-30 15:57:24,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:24,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:57:24,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:24,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:57:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:57:24,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 15:57:24,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:24,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:24,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 15:57:24,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:25,032 INFO L130 PetriNetUnfolder]: 54/101 cut-off events. [2023-08-30 15:57:25,033 INFO L131 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2023-08-30 15:57:25,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 101 events. 54/101 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 252 event pairs, 4 based on Foata normal form. 2/101 useless extension candidates. Maximal degree in co-relation 401. Up to 46 conditions per place. [2023-08-30 15:57:25,034 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 30 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2023-08-30 15:57:25,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 315 flow [2023-08-30 15:57:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:57:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:57:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 549 transitions. [2023-08-30 15:57:25,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43710191082802546 [2023-08-30 15:57:25,037 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 549 transitions. [2023-08-30 15:57:25,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 549 transitions. [2023-08-30 15:57:25,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:25,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 549 transitions. [2023-08-30 15:57:25,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,042 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,042 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 171 flow. Second operand 8 states and 549 transitions. [2023-08-30 15:57:25,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 315 flow [2023-08-30 15:57:25,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 287 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 15:57:25,045 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 181 flow [2023-08-30 15:57:25,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=181, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-08-30 15:57:25,046 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-08-30 15:57:25,046 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 181 flow [2023-08-30 15:57:25,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:25,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:25,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:57:25,047 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:25,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash -787597041, now seen corresponding path program 3 times [2023-08-30 15:57:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:25,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242686005] [2023-08-30 15:57:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:25,125 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 15:57:25,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:25,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242686005] [2023-08-30 15:57:25,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242686005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:25,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:25,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:57:25,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968291993] [2023-08-30 15:57:25,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:25,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:57:25,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:25,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:57:25,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:57:25,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 157 [2023-08-30 15:57:25,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:25,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 157 [2023-08-30 15:57:25,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:25,268 INFO L130 PetriNetUnfolder]: 64/117 cut-off events. [2023-08-30 15:57:25,268 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2023-08-30 15:57:25,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 117 events. 64/117 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 293 event pairs, 9 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 485. Up to 73 conditions per place. [2023-08-30 15:57:25,269 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 30 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2023-08-30 15:57:25,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 355 flow [2023-08-30 15:57:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:57:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:57:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-08-30 15:57:25,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222929936305734 [2023-08-30 15:57:25,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-08-30 15:57:25,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-08-30 15:57:25,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:25,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-08-30 15:57:25,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,275 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 181 flow. Second operand 6 states and 426 transitions. [2023-08-30 15:57:25,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 355 flow [2023-08-30 15:57:25,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 321 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 15:57:25,277 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 233 flow [2023-08-30 15:57:25,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-08-30 15:57:25,278 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-08-30 15:57:25,278 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 233 flow [2023-08-30 15:57:25,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:25,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:25,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:57:25,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:25,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash -787597070, now seen corresponding path program 3 times [2023-08-30 15:57:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155912904] [2023-08-30 15:57:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:25,339 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 15:57:25,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:25,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155912904] [2023-08-30 15:57:25,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155912904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:57:25,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624327859] [2023-08-30 15:57:25,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:25,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:57:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:57:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:57:25,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-30 15:57:25,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:25,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-30 15:57:25,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:25,515 INFO L130 PetriNetUnfolder]: 65/120 cut-off events. [2023-08-30 15:57:25,516 INFO L131 PetriNetUnfolder]: For 299/299 co-relation queries the response was YES. [2023-08-30 15:57:25,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 120 events. 65/120 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 317 event pairs, 6 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 535. Up to 78 conditions per place. [2023-08-30 15:57:25,517 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 33 selfloop transitions, 16 changer transitions 0/49 dead transitions. [2023-08-30 15:57:25,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 409 flow [2023-08-30 15:57:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:57:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:57:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 553 transitions. [2023-08-30 15:57:25,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44028662420382164 [2023-08-30 15:57:25,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 553 transitions. [2023-08-30 15:57:25,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 553 transitions. [2023-08-30 15:57:25,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:25,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 553 transitions. [2023-08-30 15:57:25,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,523 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,523 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 233 flow. Second operand 8 states and 553 transitions. [2023-08-30 15:57:25,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 409 flow [2023-08-30 15:57:25,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 372 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 15:57:25,526 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 244 flow [2023-08-30 15:57:25,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-08-30 15:57:25,527 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-08-30 15:57:25,527 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 244 flow [2023-08-30 15:57:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:25,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:25,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:57:25,528 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:25,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1344811048, now seen corresponding path program 1 times [2023-08-30 15:57:25,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:25,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058693535] [2023-08-30 15:57:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:25,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:25,557 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 15:57:25,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:25,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058693535] [2023-08-30 15:57:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058693535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:25,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:25,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898083131] [2023-08-30 15:57:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:25,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:25,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:25,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:25,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:25,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:25,696 INFO L130 PetriNetUnfolder]: 102/193 cut-off events. [2023-08-30 15:57:25,696 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2023-08-30 15:57:25,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 193 events. 102/193 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 649 event pairs, 14 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 857. Up to 78 conditions per place. [2023-08-30 15:57:25,698 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 42 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2023-08-30 15:57:25,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 577 flow [2023-08-30 15:57:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:57:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:57:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2023-08-30 15:57:25,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45950864422202004 [2023-08-30 15:57:25,700 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 505 transitions. [2023-08-30 15:57:25,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 505 transitions. [2023-08-30 15:57:25,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:25,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 505 transitions. [2023-08-30 15:57:25,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,703 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,703 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 244 flow. Second operand 7 states and 505 transitions. [2023-08-30 15:57:25,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 577 flow [2023-08-30 15:57:25,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 522 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-30 15:57:25,707 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 378 flow [2023-08-30 15:57:25,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-30 15:57:25,707 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2023-08-30 15:57:25,708 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 378 flow [2023-08-30 15:57:25,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:25,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:25,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:57:25,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:25,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1343574150, now seen corresponding path program 1 times [2023-08-30 15:57:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:25,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710223352] [2023-08-30 15:57:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:25,738 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 15:57:25,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710223352] [2023-08-30 15:57:25,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710223352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:25,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:25,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:25,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168092507] [2023-08-30 15:57:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:25,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:25,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:25,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:25,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:25,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:25,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:25,862 INFO L130 PetriNetUnfolder]: 106/197 cut-off events. [2023-08-30 15:57:25,862 INFO L131 PetriNetUnfolder]: For 851/851 co-relation queries the response was YES. [2023-08-30 15:57:25,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 197 events. 106/197 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 655 event pairs, 6 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 990. Up to 133 conditions per place. [2023-08-30 15:57:25,864 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-08-30 15:57:25,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 580 flow [2023-08-30 15:57:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:57:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:57:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-30 15:57:25,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467515923566879 [2023-08-30 15:57:25,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-30 15:57:25,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-30 15:57:25,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:25,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-30 15:57:25,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,873 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 378 flow. Second operand 5 states and 367 transitions. [2023-08-30 15:57:25,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 580 flow [2023-08-30 15:57:25,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 552 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 15:57:25,877 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 399 flow [2023-08-30 15:57:25,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-08-30 15:57:25,878 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2023-08-30 15:57:25,878 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 399 flow [2023-08-30 15:57:25,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:25,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:57:25,879 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:25,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1343570430, now seen corresponding path program 2 times [2023-08-30 15:57:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278722211] [2023-08-30 15:57:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:25,916 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 15:57:25,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:25,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278722211] [2023-08-30 15:57:25,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278722211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:25,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:25,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:25,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408668174] [2023-08-30 15:57:25,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:25,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:25,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:25,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:25,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:25,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:25,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:25,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:25,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:26,043 INFO L130 PetriNetUnfolder]: 112/215 cut-off events. [2023-08-30 15:57:26,043 INFO L131 PetriNetUnfolder]: For 1074/1074 co-relation queries the response was YES. [2023-08-30 15:57:26,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 215 events. 112/215 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 764 event pairs, 10 based on Foata normal form. 4/219 useless extension candidates. Maximal degree in co-relation 1104. Up to 84 conditions per place. [2023-08-30 15:57:26,045 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 42 selfloop transitions, 18 changer transitions 2/62 dead transitions. [2023-08-30 15:57:26,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 640 flow [2023-08-30 15:57:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:57:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:57:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-30 15:57:26,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596602972399151 [2023-08-30 15:57:26,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-30 15:57:26,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-30 15:57:26,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:26,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-30 15:57:26,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,052 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,052 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 399 flow. Second operand 6 states and 433 transitions. [2023-08-30 15:57:26,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 640 flow [2023-08-30 15:57:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 602 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 15:57:26,056 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 416 flow [2023-08-30 15:57:26,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-08-30 15:57:26,056 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-08-30 15:57:26,057 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 416 flow [2023-08-30 15:57:26,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:26,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:26,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 15:57:26,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:26,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1343573218, now seen corresponding path program 2 times [2023-08-30 15:57:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848167560] [2023-08-30 15:57:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:26,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:26,091 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 15:57:26,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:26,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848167560] [2023-08-30 15:57:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848167560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:26,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:26,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:26,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979098072] [2023-08-30 15:57:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:26,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:26,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:26,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:26,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:26,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:26,224 INFO L130 PetriNetUnfolder]: 122/233 cut-off events. [2023-08-30 15:57:26,224 INFO L131 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2023-08-30 15:57:26,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 233 events. 122/233 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 842 event pairs, 34 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 1238. Up to 134 conditions per place. [2023-08-30 15:57:26,225 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 52 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2023-08-30 15:57:26,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 684 flow [2023-08-30 15:57:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:57:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:57:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-08-30 15:57:26,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47388535031847134 [2023-08-30 15:57:26,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-08-30 15:57:26,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-08-30 15:57:26,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:26,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-08-30 15:57:26,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,235 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 416 flow. Second operand 5 states and 372 transitions. [2023-08-30 15:57:26,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 684 flow [2023-08-30 15:57:26,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 650 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 15:57:26,240 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 479 flow [2023-08-30 15:57:26,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-08-30 15:57:26,241 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2023-08-30 15:57:26,241 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 479 flow [2023-08-30 15:57:26,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:26,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:26,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:57:26,242 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:26,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1343571358, now seen corresponding path program 3 times [2023-08-30 15:57:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:26,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210315538] [2023-08-30 15:57:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:26,270 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 15:57:26,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:26,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210315538] [2023-08-30 15:57:26,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210315538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:26,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:26,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376256557] [2023-08-30 15:57:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:26,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:26,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:26,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:26,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:26,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:26,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:26,443 INFO L130 PetriNetUnfolder]: 114/221 cut-off events. [2023-08-30 15:57:26,443 INFO L131 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2023-08-30 15:57:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 221 events. 114/221 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 798 event pairs, 21 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 1188. Up to 101 conditions per place. [2023-08-30 15:57:26,445 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 49 selfloop transitions, 20 changer transitions 3/72 dead transitions. [2023-08-30 15:57:26,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 741 flow [2023-08-30 15:57:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:57:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:57:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 577 transitions. [2023-08-30 15:57:26,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593949044585987 [2023-08-30 15:57:26,448 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 577 transitions. [2023-08-30 15:57:26,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 577 transitions. [2023-08-30 15:57:26,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:26,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 577 transitions. [2023-08-30 15:57:26,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,452 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 479 flow. Second operand 8 states and 577 transitions. [2023-08-30 15:57:26,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 741 flow [2023-08-30 15:57:26,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 726 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:57:26,456 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 510 flow [2023-08-30 15:57:26,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=510, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2023-08-30 15:57:26,457 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-08-30 15:57:26,457 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 510 flow [2023-08-30 15:57:26,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:26,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:26,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 15:57:26,458 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:26,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1355852010, now seen corresponding path program 3 times [2023-08-30 15:57:26,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:26,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431616259] [2023-08-30 15:57:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:26,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:26,487 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 15:57:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431616259] [2023-08-30 15:57:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431616259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:26,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977634805] [2023-08-30 15:57:26,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:26,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:26,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:26,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:26,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:26,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:26,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:26,610 INFO L130 PetriNetUnfolder]: 146/281 cut-off events. [2023-08-30 15:57:26,610 INFO L131 PetriNetUnfolder]: For 1877/1877 co-relation queries the response was YES. [2023-08-30 15:57:26,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 281 events. 146/281 cut-off events. For 1877/1877 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1102 event pairs, 28 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 1588. Up to 107 conditions per place. [2023-08-30 15:57:26,613 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 50 selfloop transitions, 28 changer transitions 2/80 dead transitions. [2023-08-30 15:57:26,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 935 flow [2023-08-30 15:57:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:57:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:57:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2023-08-30 15:57:26,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45586897179253866 [2023-08-30 15:57:26,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2023-08-30 15:57:26,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2023-08-30 15:57:26,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:26,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2023-08-30 15:57:26,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,619 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,619 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 510 flow. Second operand 7 states and 501 transitions. [2023-08-30 15:57:26,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 935 flow [2023-08-30 15:57:26,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 881 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 15:57:26,625 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 703 flow [2023-08-30 15:57:26,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2023-08-30 15:57:26,626 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2023-08-30 15:57:26,626 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 703 flow [2023-08-30 15:57:26,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:26,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 15:57:26,627 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:26,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1354298939, now seen corresponding path program 1 times [2023-08-30 15:57:26,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:26,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854449919] [2023-08-30 15:57:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:26,655 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 15:57:26,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:26,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854449919] [2023-08-30 15:57:26,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854449919] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:26,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76790370] [2023-08-30 15:57:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:26,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:26,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:26,663 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 15:57:26,667 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 15:57:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:26,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:57:26,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:26,772 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 15:57:26,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:26,833 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 15:57:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76790370] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:26,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:57:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-08-30 15:57:26,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543712728] [2023-08-30 15:57:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:57:26,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:26,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 703 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:26,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:26,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:26,991 INFO L130 PetriNetUnfolder]: 140/267 cut-off events. [2023-08-30 15:57:26,991 INFO L131 PetriNetUnfolder]: For 2096/2096 co-relation queries the response was YES. [2023-08-30 15:57:26,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 267 events. 140/267 cut-off events. For 2096/2096 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1011 event pairs, 28 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 1602. Up to 156 conditions per place. [2023-08-30 15:57:26,994 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 51 selfloop transitions, 30 changer transitions 0/81 dead transitions. [2023-08-30 15:57:26,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 976 flow [2023-08-30 15:57:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:57:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:57:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 442 transitions. [2023-08-30 15:57:26,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692144373673036 [2023-08-30 15:57:26,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 442 transitions. [2023-08-30 15:57:26,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 442 transitions. [2023-08-30 15:57:26,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:26,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 442 transitions. [2023-08-30 15:57:26,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:26,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,000 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 703 flow. Second operand 6 states and 442 transitions. [2023-08-30 15:57:27,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 976 flow [2023-08-30 15:57:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 932 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-30 15:57:27,007 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 787 flow [2023-08-30 15:57:27,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2023-08-30 15:57:27,008 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 60 predicate places. [2023-08-30 15:57:27,008 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 787 flow [2023-08-30 15:57:27,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:27,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:27,020 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 15:57:27,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:27,216 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:27,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1354297978, now seen corresponding path program 4 times [2023-08-30 15:57:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:27,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146904109] [2023-08-30 15:57:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:27,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:27,276 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 15:57:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146904109] [2023-08-30 15:57:27,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146904109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:27,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:27,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:27,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359913519] [2023-08-30 15:57:27,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:27,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:27,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:27,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 787 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:27,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:27,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:27,391 INFO L130 PetriNetUnfolder]: 131/248 cut-off events. [2023-08-30 15:57:27,391 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2023-08-30 15:57:27,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 248 events. 131/248 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 916 event pairs, 10 based on Foata normal form. 4/252 useless extension candidates. Maximal degree in co-relation 1565. Up to 156 conditions per place. [2023-08-30 15:57:27,394 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 55 selfloop transitions, 19 changer transitions 0/74 dead transitions. [2023-08-30 15:57:27,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 74 transitions, 955 flow [2023-08-30 15:57:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:57:27,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:57:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-30 15:57:27,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467515923566879 [2023-08-30 15:57:27,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-30 15:57:27,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-30 15:57:27,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:27,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-30 15:57:27,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,400 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,400 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 787 flow. Second operand 5 states and 367 transitions. [2023-08-30 15:57:27,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 74 transitions, 955 flow [2023-08-30 15:57:27,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 74 transitions, 942 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 15:57:27,409 INFO L231 Difference]: Finished difference. Result has 90 places, 63 transitions, 789 flow [2023-08-30 15:57:27,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=789, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2023-08-30 15:57:27,410 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2023-08-30 15:57:27,410 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 789 flow [2023-08-30 15:57:27,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:27,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 15:57:27,415 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:27,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1354295190, now seen corresponding path program 4 times [2023-08-30 15:57:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:27,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564813111] [2023-08-30 15:57:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:27,457 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 15:57:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564813111] [2023-08-30 15:57:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564813111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:27,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:27,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208058015] [2023-08-30 15:57:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:27,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:27,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:27,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 789 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:27,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:27,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:27,592 INFO L130 PetriNetUnfolder]: 127/240 cut-off events. [2023-08-30 15:57:27,592 INFO L131 PetriNetUnfolder]: For 2000/2000 co-relation queries the response was YES. [2023-08-30 15:57:27,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 240 events. 127/240 cut-off events. For 2000/2000 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 865 event pairs, 20 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 1553. Up to 92 conditions per place. [2023-08-30 15:57:27,595 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 50 selfloop transitions, 27 changer transitions 1/78 dead transitions. [2023-08-30 15:57:27,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 78 transitions, 1012 flow [2023-08-30 15:57:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:57:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:57:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 572 transitions. [2023-08-30 15:57:27,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554140127388535 [2023-08-30 15:57:27,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 572 transitions. [2023-08-30 15:57:27,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 572 transitions. [2023-08-30 15:57:27,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:27,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 572 transitions. [2023-08-30 15:57:27,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 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 15:57:27,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,600 INFO L175 Difference]: Start difference. First operand has 90 places, 63 transitions, 789 flow. Second operand 8 states and 572 transitions. [2023-08-30 15:57:27,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 78 transitions, 1012 flow [2023-08-30 15:57:27,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 973 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 15:57:27,608 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 764 flow [2023-08-30 15:57:27,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2023-08-30 15:57:27,608 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 65 predicate places. [2023-08-30 15:57:27,609 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 764 flow [2023-08-30 15:57:27,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:27,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:27,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 15:57:27,609 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:27,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:27,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1354296118, now seen corresponding path program 5 times [2023-08-30 15:57:27,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:27,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165740695] [2023-08-30 15:57:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:27,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:27,636 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 15:57:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:27,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165740695] [2023-08-30 15:57:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165740695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:27,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:57:27,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:57:27,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88948056] [2023-08-30 15:57:27,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:57:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:57:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:57:27,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:27,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:27,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:27,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:27,750 INFO L130 PetriNetUnfolder]: 112/215 cut-off events. [2023-08-30 15:57:27,751 INFO L131 PetriNetUnfolder]: For 1943/1943 co-relation queries the response was YES. [2023-08-30 15:57:27,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 215 events. 112/215 cut-off events. For 1943/1943 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 750 event pairs, 8 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 1405. Up to 106 conditions per place. [2023-08-30 15:57:27,753 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 48 selfloop transitions, 19 changer transitions 4/71 dead transitions. [2023-08-30 15:57:27,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 71 transitions, 946 flow [2023-08-30 15:57:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:57:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:57:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-30 15:57:27,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596602972399151 [2023-08-30 15:57:27,755 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-30 15:57:27,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-30 15:57:27,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:27,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-30 15:57:27,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,758 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 764 flow. Second operand 6 states and 433 transitions. [2023-08-30 15:57:27,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 71 transitions, 946 flow [2023-08-30 15:57:27,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 71 transitions, 864 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 15:57:27,765 INFO L231 Difference]: Finished difference. Result has 87 places, 55 transitions, 641 flow [2023-08-30 15:57:27,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=641, PETRI_PLACES=87, PETRI_TRANSITIONS=55} [2023-08-30 15:57:27,765 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-08-30 15:57:27,766 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 55 transitions, 641 flow [2023-08-30 15:57:27,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:27,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:27,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:27,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 15:57:27,766 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:27,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:27,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1320102062, now seen corresponding path program 1 times [2023-08-30 15:57:27,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:27,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631883596] [2023-08-30 15:57:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:27,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:27,839 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 15:57:27,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:27,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631883596] [2023-08-30 15:57:27,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631883596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:27,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756454746] [2023-08-30 15:57:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:27,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:27,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:27,841 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 15:57:27,870 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 15:57:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:27,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:57:27,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:27,990 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 15:57:27,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:28,067 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 15:57:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756454746] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:28,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:28,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 15:57:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488961048] [2023-08-30 15:57:28,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:28,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 15:57:28,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 15:57:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-30 15:57:28,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 15:57:28,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 55 transitions, 641 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:28,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:28,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 15:57:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:28,625 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-08-30 15:57:28,626 INFO L131 PetriNetUnfolder]: For 1781/1781 co-relation queries the response was YES. [2023-08-30 15:57:28,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 216 events. 117/216 cut-off events. For 1781/1781 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 741 event pairs, 0 based on Foata normal form. 8/224 useless extension candidates. Maximal degree in co-relation 1345. Up to 57 conditions per place. [2023-08-30 15:57:28,628 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 35 selfloop transitions, 32 changer transitions 28/95 dead transitions. [2023-08-30 15:57:28,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 1069 flow [2023-08-30 15:57:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 15:57:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 15:57:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1272 transitions. [2023-08-30 15:57:28,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42641635936976197 [2023-08-30 15:57:28,631 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1272 transitions. [2023-08-30 15:57:28,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1272 transitions. [2023-08-30 15:57:28,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:28,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1272 transitions. [2023-08-30 15:57:28,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.94736842105263) internal successors, (1272), 19 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:28,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:28,637 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:28,637 INFO L175 Difference]: Start difference. First operand has 87 places, 55 transitions, 641 flow. Second operand 19 states and 1272 transitions. [2023-08-30 15:57:28,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 1069 flow [2023-08-30 15:57:28,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 997 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-30 15:57:28,643 INFO L231 Difference]: Finished difference. Result has 96 places, 43 transitions, 527 flow [2023-08-30 15:57:28,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=527, PETRI_PLACES=96, PETRI_TRANSITIONS=43} [2023-08-30 15:57:28,644 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-08-30 15:57:28,644 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 43 transitions, 527 flow [2023-08-30 15:57:28,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:28,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:28,658 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 15:57:28,850 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,SelfDestructingSolverStorable22 [2023-08-30 15:57:28,850 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:28,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1257759387, now seen corresponding path program 1 times [2023-08-30 15:57:28,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:28,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265146291] [2023-08-30 15:57:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:28,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:28,925 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 15:57:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265146291] [2023-08-30 15:57:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265146291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877172953] [2023-08-30 15:57:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:28,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:28,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:28,927 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 15:57:28,953 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 15:57:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:28,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:57:28,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:29,055 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 15:57:29,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:29,115 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 15:57:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877172953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:29,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:29,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 15:57:29,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296946405] [2023-08-30 15:57:29,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:29,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 15:57:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:29,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 15:57:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-08-30 15:57:29,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 15:57:29,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 43 transitions, 527 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:29,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:29,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 15:57:29,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:29,485 INFO L130 PetriNetUnfolder]: 84/153 cut-off events. [2023-08-30 15:57:29,486 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-08-30 15:57:29,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 153 events. 84/153 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 435 event pairs, 2 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 1008. Up to 61 conditions per place. [2023-08-30 15:57:29,487 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 16 changer transitions 24/66 dead transitions. [2023-08-30 15:57:29,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 66 transitions, 835 flow [2023-08-30 15:57:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:57:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:57:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 800 transitions. [2023-08-30 15:57:29,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42462845010615713 [2023-08-30 15:57:29,490 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 800 transitions. [2023-08-30 15:57:29,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 800 transitions. [2023-08-30 15:57:29,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:29,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 800 transitions. [2023-08-30 15:57:29,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 66.66666666666667) internal successors, (800), 12 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:29,495 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:29,495 INFO L175 Difference]: Start difference. First operand has 96 places, 43 transitions, 527 flow. Second operand 12 states and 800 transitions. [2023-08-30 15:57:29,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 66 transitions, 835 flow [2023-08-30 15:57:29,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 608 flow, removed 41 selfloop flow, removed 23 redundant places. [2023-08-30 15:57:29,500 INFO L231 Difference]: Finished difference. Result has 74 places, 34 transitions, 306 flow [2023-08-30 15:57:29,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=74, PETRI_TRANSITIONS=34} [2023-08-30 15:57:29,501 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-08-30 15:57:29,501 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 34 transitions, 306 flow [2023-08-30 15:57:29,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:29,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:29,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:29,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:57:29,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:29,707 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:29,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1298903517, now seen corresponding path program 2 times [2023-08-30 15:57:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538826466] [2023-08-30 15:57:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:29,780 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 15:57:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538826466] [2023-08-30 15:57:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538826466] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690469716] [2023-08-30 15:57:29,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:57:29,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:29,783 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 15:57:29,808 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 15:57:29,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:57:29,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:57:29,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:57:29,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:29,925 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 15:57:29,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:30,013 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 15:57:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690469716] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:30,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:30,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 15:57:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523539156] [2023-08-30 15:57:30,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:30,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 15:57:30,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 15:57:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-08-30 15:57:30,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 15:57:30,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 34 transitions, 306 flow. Second operand has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:30,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:30,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 15:57:30,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:30,423 INFO L130 PetriNetUnfolder]: 71/144 cut-off events. [2023-08-30 15:57:30,423 INFO L131 PetriNetUnfolder]: For 842/842 co-relation queries the response was YES. [2023-08-30 15:57:30,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 144 events. 71/144 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 455 event pairs, 1 based on Foata normal form. 14/158 useless extension candidates. Maximal degree in co-relation 776. Up to 43 conditions per place. [2023-08-30 15:57:30,424 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 25 selfloop transitions, 31 changer transitions 14/70 dead transitions. [2023-08-30 15:57:30,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 696 flow [2023-08-30 15:57:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 15:57:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 15:57:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1257 transitions. [2023-08-30 15:57:30,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213878645658733 [2023-08-30 15:57:30,427 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1257 transitions. [2023-08-30 15:57:30,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1257 transitions. [2023-08-30 15:57:30,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:30,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1257 transitions. [2023-08-30 15:57:30,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.15789473684211) internal successors, (1257), 19 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:30,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:30,433 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:30,433 INFO L175 Difference]: Start difference. First operand has 74 places, 34 transitions, 306 flow. Second operand 19 states and 1257 transitions. [2023-08-30 15:57:30,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 696 flow [2023-08-30 15:57:30,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 631 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-30 15:57:30,437 INFO L231 Difference]: Finished difference. Result has 79 places, 41 transitions, 437 flow [2023-08-30 15:57:30,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=437, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2023-08-30 15:57:30,438 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-08-30 15:57:30,438 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 41 transitions, 437 flow [2023-08-30 15:57:30,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:30,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:30,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:30,447 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 15:57:30,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:30,643 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:30,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash -966432237, now seen corresponding path program 3 times [2023-08-30 15:57:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:30,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917446253] [2023-08-30 15:57:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:30,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:30,716 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 15:57:30,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917446253] [2023-08-30 15:57:30,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917446253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074088315] [2023-08-30 15:57:30,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:57:30,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:30,718 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 15:57:30,746 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 15:57:30,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 15:57:30,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:57:30,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:57:30,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:30,861 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 15:57:30,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:30,935 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 15:57:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074088315] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:30,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:30,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 15:57:30,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554462842] [2023-08-30 15:57:30,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:30,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 15:57:30,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 15:57:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-30 15:57:31,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-08-30 15:57:31,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 41 transitions, 437 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:31,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-08-30 15:57:31,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:31,337 INFO L130 PetriNetUnfolder]: 71/148 cut-off events. [2023-08-30 15:57:31,337 INFO L131 PetriNetUnfolder]: For 676/676 co-relation queries the response was YES. [2023-08-30 15:57:31,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 148 events. 71/148 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 471 event pairs, 0 based on Foata normal form. 10/158 useless extension candidates. Maximal degree in co-relation 917. Up to 47 conditions per place. [2023-08-30 15:57:31,339 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 19 changer transitions 22/67 dead transitions. [2023-08-30 15:57:31,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 67 transitions, 802 flow [2023-08-30 15:57:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 15:57:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 15:57:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 990 transitions. [2023-08-30 15:57:31,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42038216560509556 [2023-08-30 15:57:31,342 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 990 transitions. [2023-08-30 15:57:31,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 990 transitions. [2023-08-30 15:57:31,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:31,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 990 transitions. [2023-08-30 15:57:31,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.0) internal successors, (990), 15 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,347 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,347 INFO L175 Difference]: Start difference. First operand has 79 places, 41 transitions, 437 flow. Second operand 15 states and 990 transitions. [2023-08-30 15:57:31,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 67 transitions, 802 flow [2023-08-30 15:57:31,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 671 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-08-30 15:57:31,351 INFO L231 Difference]: Finished difference. Result has 82 places, 37 transitions, 364 flow [2023-08-30 15:57:31,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=364, PETRI_PLACES=82, PETRI_TRANSITIONS=37} [2023-08-30 15:57:31,352 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-08-30 15:57:31,352 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions, 364 flow [2023-08-30 15:57:31,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:31,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:31,360 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 15:57:31,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 15:57:31,558 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:31,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:31,558 INFO L85 PathProgramCache]: Analyzing trace with hash 954706432, now seen corresponding path program 4 times [2023-08-30 15:57:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:31,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148145640] [2023-08-30 15:57:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:31,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:57:31,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148145640] [2023-08-30 15:57:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148145640] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332398307] [2023-08-30 15:57:31,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 15:57:31,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:31,606 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 15:57:31,640 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 15:57:31,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 15:57:31,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:57:31,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:57:31,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:57:31,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:57:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:57:31,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332398307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:57:31,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:57:31,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-08-30 15:57:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614491845] [2023-08-30 15:57:31,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:57:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 15:57:31,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:31,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 15:57:31,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 15:57:31,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-08-30 15:57:31,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions, 364 flow. Second operand has 10 states, 10 states have (on average 67.6) internal successors, (676), 10 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:31,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-08-30 15:57:31,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:31,907 INFO L130 PetriNetUnfolder]: 45/98 cut-off events. [2023-08-30 15:57:31,908 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-08-30 15:57:31,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 98 events. 45/98 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 257 event pairs, 8 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 563. Up to 48 conditions per place. [2023-08-30 15:57:31,909 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 27 selfloop transitions, 21 changer transitions 0/48 dead transitions. [2023-08-30 15:57:31,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 48 transitions, 495 flow [2023-08-30 15:57:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 15:57:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 15:57:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 765 transitions. [2023-08-30 15:57:31,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44296467863346844 [2023-08-30 15:57:31,911 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 765 transitions. [2023-08-30 15:57:31,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 765 transitions. [2023-08-30 15:57:31,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:31,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 765 transitions. [2023-08-30 15:57:31,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,914 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,915 INFO L175 Difference]: Start difference. First operand has 82 places, 37 transitions, 364 flow. Second operand 11 states and 765 transitions. [2023-08-30 15:57:31,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 48 transitions, 495 flow [2023-08-30 15:57:31,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 48 transitions, 432 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-08-30 15:57:31,918 INFO L231 Difference]: Finished difference. Result has 72 places, 36 transitions, 332 flow [2023-08-30 15:57:31,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=332, PETRI_PLACES=72, PETRI_TRANSITIONS=36} [2023-08-30 15:57:31,918 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-08-30 15:57:31,919 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 36 transitions, 332 flow [2023-08-30 15:57:31,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.6) internal successors, (676), 10 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:31,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:57:31,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:31,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 15:57:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 15:57:32,127 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 15:57:32,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:57:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash -913936527, now seen corresponding path program 5 times [2023-08-30 15:57:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:57:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664023103] [2023-08-30 15:57:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:57:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:57:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:57:32,202 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 15:57:32,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:57:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664023103] [2023-08-30 15:57:32,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664023103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:57:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957675208] [2023-08-30 15:57:32,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 15:57:32,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:32,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:57:32,205 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 15:57:32,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:57:32,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:57:32,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:57:32,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:57:32,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:57:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:57:32,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:57:32,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957675208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:57:32,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:57:32,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-30 15:57:32,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17272038] [2023-08-30 15:57:32,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:57:32,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:57:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:57:32,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:57:32,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:57:32,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2023-08-30 15:57:32,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 36 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:57:32,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2023-08-30 15:57:32,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:57:32,386 INFO L130 PetriNetUnfolder]: 40/87 cut-off events. [2023-08-30 15:57:32,386 INFO L131 PetriNetUnfolder]: For 383/383 co-relation queries the response was YES. [2023-08-30 15:57:32,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 87 events. 40/87 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 3 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 481. Up to 31 conditions per place. [2023-08-30 15:57:32,387 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-30 15:57:32,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 38 transitions, 400 flow [2023-08-30 15:57:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:57:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:57:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2023-08-30 15:57:32,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45950864422202004 [2023-08-30 15:57:32,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 505 transitions. [2023-08-30 15:57:32,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 505 transitions. [2023-08-30 15:57:32,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:57:32,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 505 transitions. [2023-08-30 15:57:32,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,391 INFO L175 Difference]: Start difference. First operand has 72 places, 36 transitions, 332 flow. Second operand 7 states and 505 transitions. [2023-08-30 15:57:32,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 38 transitions, 400 flow [2023-08-30 15:57:32,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 38 transitions, 341 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-30 15:57:32,393 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-08-30 15:57:32,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-08-30 15:57:32,394 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 37 predicate places. [2023-08-30 15:57:32,394 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-08-30 15:57:32,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:57:32,396 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 15:57:32,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 15:57:32,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 15:57:32,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 15:57:32,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 15:57:32,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 15:57:32,397 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 15:57:32,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 15:57:32,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-30 15:57:32,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 15:57:32,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 15:57:32,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 15:57:32,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 15:57:32,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 15:57:32,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 15:57:32,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 15:57:32,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 15:57:32,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 15:57:32,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:57:32,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:57:32,604 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:57:32,610 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:57:32,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:57:32,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:57:32 BasicIcfg [2023-08-30 15:57:32,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:57:32,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:57:32,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:57:32,613 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:57:32,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:57:20" (3/4) ... [2023-08-30 15:57:32,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:57:32,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:57:32,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:57:32,623 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 15:57:32,623 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:57:32,623 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:57:32,623 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:57:32,656 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:57:32,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:57:32,656 INFO L158 Benchmark]: Toolchain (without parser) took 13274.96ms. Allocated memory was 71.3MB in the beginning and 151.0MB in the end (delta: 79.7MB). Free memory was 40.8MB in the beginning and 112.4MB in the end (delta: -71.6MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-08-30 15:57:32,657 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:57:32,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.72ms. Allocated memory is still 71.3MB. Free memory was 40.6MB in the beginning and 49.8MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 15:57:32,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 48.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:57:32,657 INFO L158 Benchmark]: Boogie Preprocessor took 46.47ms. Allocated memory is still 71.3MB. Free memory was 48.2MB in the beginning and 46.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:57:32,658 INFO L158 Benchmark]: RCFGBuilder took 417.83ms. Allocated memory is still 71.3MB. Free memory was 46.8MB in the beginning and 33.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 15:57:32,659 INFO L158 Benchmark]: TraceAbstraction took 12497.30ms. Allocated memory was 71.3MB in the beginning and 151.0MB in the end (delta: 79.7MB). Free memory was 32.5MB in the beginning and 114.4MB in the end (delta: -81.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:57:32,659 INFO L158 Benchmark]: Witness Printer took 42.87ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 112.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:57:32,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.72ms. Allocated memory is still 71.3MB. Free memory was 40.6MB in the beginning and 49.8MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory is still 71.3MB. Free memory was 49.8MB in the beginning and 48.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.47ms. Allocated memory is still 71.3MB. Free memory was 48.2MB in the beginning and 46.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 417.83ms. Allocated memory is still 71.3MB. Free memory was 46.8MB in the beginning and 33.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12497.30ms. Allocated memory was 71.3MB in the beginning and 151.0MB in the end (delta: 79.7MB). Free memory was 32.5MB in the beginning and 114.4MB in the end (delta: -81.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.87ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 112.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 75 PlacesBefore, 26 PlacesAfterwards, 73 TransitionsBefore, 21 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 66 TotalNumberOfCompositions, 1018 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 973, independent: 966, independent conditional: 0, independent unconditional: 966, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 515, independent: 511, independent conditional: 0, independent unconditional: 511, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 973, independent: 455, independent conditional: 0, independent unconditional: 455, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 515, unknown conditional: 0, unknown unconditional: 515] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: 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, 120 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: 12.3s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2296 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1832 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 847 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5385 IncrementalHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 163 mSDtfsCounter, 5385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=20, InterpolantAutomatonStates: 212, 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, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 320 ConstructedInterpolants, 0 QuantifiedInterpolants, 1376 SizeOfPredicates, 15 NumberOfNonLiveVariables, 700 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 41 InterpolantComputations, 23 PerfectInterpolantSequences, 15/52 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 15:57:32,689 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