./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/triangular-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/pthread/triangular-2.i -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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:56:42,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:56:42,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:56:42,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:56:42,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:56:42,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:56:42,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:56:42,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:56:42,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:56:42,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:56:42,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:56:42,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:56:42,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:56:42,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:56:42,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:56:42,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:56:42,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:56:42,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:56:42,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:56:42,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:56:42,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:56:42,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:56:42,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:56:42,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:56:42,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:56:42,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:56:42,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:56:42,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:56:42,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:56:42,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:56:42,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:56:42,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:56:42,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:56:42,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:56:42,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:56:42,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:56:42,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:56:42,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:56:42,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:56:42,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:56:42,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:56:42,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:56:42,585 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:56:42,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:56:42,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:56:42,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:56:42,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:56:42,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:56:42,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:56:42,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:56:42,589 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:56:42,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:56:42,590 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:56:42,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:56:42,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:56:42,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:56:42,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:56:42,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:56:42,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:56:42,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:56:42,591 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:56:42,591 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:56:42,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:56:42,591 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:56:42,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:56:42,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:56:42,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:56:42,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:56:42,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:56:42,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:56:42,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:56:42,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:56:42,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:56:42,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:56:42,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:56:42,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:56:42,594 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:56:42,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:56:42,594 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:56:42,594 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:56:42,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:56:42,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:56:42,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:56:42,877 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:56:42,877 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:56:42,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2023-09-01 04:56:43,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:56:44,112 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:56:44,113 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2023-09-01 04:56:44,126 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1335eb573/83ed8cb4854c4ee79178cdb40df1ff3a/FLAGe0b97a8ff [2023-09-01 04:56:44,140 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1335eb573/83ed8cb4854c4ee79178cdb40df1ff3a [2023-09-01 04:56:44,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:56:44,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:56:44,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:56:44,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:56:44,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:56:44,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c823ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44, skipping insertion in model container [2023-09-01 04:56:44,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:56:44,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:56:44,417 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i[30952,30965] [2023-09-01 04:56:44,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:56:44,424 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:56:44,452 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i[30952,30965] [2023-09-01 04:56:44,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:56:44,484 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:56:44,484 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:56:44,489 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:56:44,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44 WrapperNode [2023-09-01 04:56:44,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:56:44,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:56:44,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:56:44,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:56:44,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,538 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-09-01 04:56:44,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:56:44,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:56:44,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:56:44,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:56:44,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:56:44,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:56:44,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:56:44,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:56:44,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (1/1) ... [2023-09-01 04:56:44,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:56:44,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:44,599 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) [2023-09-01 04:56:44,608 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 [2023-09-01 04:56:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:56:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:56:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:56:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:56:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:56:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 04:56:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:56:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:56:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:56:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:56:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 04:56:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:56:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:56:44,641 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:56:44,740 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:56:44,742 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:56:44,870 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:56:44,889 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:56:44,889 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:56:44,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:44 BoogieIcfgContainer [2023-09-01 04:56:44,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:56:44,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:56:44,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:56:44,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:56:44,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:56:44" (1/3) ... [2023-09-01 04:56:44,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e120291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:56:44, skipping insertion in model container [2023-09-01 04:56:44,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:56:44" (2/3) ... [2023-09-01 04:56:44,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e120291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:56:44, skipping insertion in model container [2023-09-01 04:56:44,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:44" (3/3) ... [2023-09-01 04:56:44,898 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-09-01 04:56:44,904 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:56:44,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:56:44,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:56:44,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:56:44,998 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:56:45,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 164 flow [2023-09-01 04:56:45,072 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-09-01 04:56:45,072 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:45,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-09-01 04:56:45,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 164 flow [2023-09-01 04:56:45,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:45,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:56:45,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:45,102 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:45,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 156 flow [2023-09-01 04:56:45,134 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-09-01 04:56:45,134 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:45,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-09-01 04:56:45,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 1802 [2023-09-01 04:56:46,934 INFO L134 LiptonReduction]: Checked pairs total: 1843 [2023-09-01 04:56:46,935 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-09-01 04:56:46,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:56:46,948 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;@4232d6aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:56:46,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:56:46,951 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 04:56:46,951 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:56:46,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:46,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:56:46,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:46,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:46,955 INFO L85 PathProgramCache]: Analyzing trace with hash 9842129, now seen corresponding path program 1 times [2023-09-01 04:56:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274798985] [2023-09-01 04:56:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:47,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274798985] [2023-09-01 04:56:47,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274798985] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:47,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:47,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:56:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930809739] [2023-09-01 04:56:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:47,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:47,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:56:47,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:47,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:56:47,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:47,211 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2023-09-01 04:56:47,214 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 04:56:47,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1808 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2023-09-01 04:56:47,219 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-09-01 04:56:47,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2023-09-01 04:56:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:47,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-09-01 04:56:47,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2023-09-01 04:56:47,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-09-01 04:56:47,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-09-01 04:56:47,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:47,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-09-01 04:56:47,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,243 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 232 transitions. [2023-09-01 04:56:47,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2023-09-01 04:56:47,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:56:47,246 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2023-09-01 04:56:47,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-09-01 04:56:47,249 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-09-01 04:56:47,250 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2023-09-01 04:56:47,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:47,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:56:47,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:56:47,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:47,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash 9842130, now seen corresponding path program 1 times [2023-09-01 04:56:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:47,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274872111] [2023-09-01 04:56:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:47,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274872111] [2023-09-01 04:56:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274872111] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:47,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:47,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:56:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924496504] [2023-09-01 04:56:47,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:47,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:47,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:47,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:56:47,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:47,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:56:47,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:47,395 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2023-09-01 04:56:47,395 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-09-01 04:56:47,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1878 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2023-09-01 04:56:47,397 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-09-01 04:56:47,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2023-09-01 04:56:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-09-01 04:56:47,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-09-01 04:56:47,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-09-01 04:56:47,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-09-01 04:56:47,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:47,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-09-01 04:56:47,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,404 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 225 transitions. [2023-09-01 04:56:47,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2023-09-01 04:56:47,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:56:47,405 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2023-09-01 04:56:47,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-09-01 04:56:47,406 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-09-01 04:56:47,406 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2023-09-01 04:56:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:47,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 04:56:47,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:56:47,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:47,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash 9842166, now seen corresponding path program 1 times [2023-09-01 04:56:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714628230] [2023-09-01 04:56:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714628230] [2023-09-01 04:56:47,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714628230] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:47,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:56:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358247486] [2023-09-01 04:56:47,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:47,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:47,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:47,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:56:47,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:47,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:56:47,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:47,551 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2023-09-01 04:56:47,551 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 04:56:47,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3177 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2023-09-01 04:56:47,555 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-09-01 04:56:47,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2023-09-01 04:56:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-09-01 04:56:47,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-09-01 04:56:47,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-09-01 04:56:47,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-09-01 04:56:47,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:47,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-09-01 04:56:47,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,559 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 225 transitions. [2023-09-01 04:56:47,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2023-09-01 04:56:47,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:47,562 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2023-09-01 04:56:47,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-09-01 04:56:47,563 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-09-01 04:56:47,563 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2023-09-01 04:56:47,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:47,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:56:47,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:56:47,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:47,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash 305107525, now seen corresponding path program 1 times [2023-09-01 04:56:47,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625357020] [2023-09-01 04:56:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:47,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:47,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625357020] [2023-09-01 04:56:47,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625357020] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267369866] [2023-09-01 04:56:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:47,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:47,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:56:47,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 04:56:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:47,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:56:47,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:47,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:56:47,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267369866] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:47,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:56:47,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:56:47,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766798968] [2023-09-01 04:56:47,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:47,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:47,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:47,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:47,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:56:47,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:56:47,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:47,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:56:47,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:47,851 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2023-09-01 04:56:47,860 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2023-09-01 04:56:47,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2863 event pairs, 18 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 336 conditions per place. [2023-09-01 04:56:47,865 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-09-01 04:56:47,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 330 flow [2023-09-01 04:56:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:56:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:56:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-09-01 04:56:47,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016891891891891 [2023-09-01 04:56:47,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-09-01 04:56:47,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-09-01 04:56:47,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:47,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-09-01 04:56:47,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,879 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 4 states and 297 transitions. [2023-09-01 04:56:47,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 330 flow [2023-09-01 04:56:47,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:47,880 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 106 flow [2023-09-01 04:56:47,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-09-01 04:56:47,881 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-09-01 04:56:47,881 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 106 flow [2023-09-01 04:56:47,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:47,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:47,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:47,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:48,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:48,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:48,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1174384726, now seen corresponding path program 1 times [2023-09-01 04:56:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:48,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629179267] [2023-09-01 04:56:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:48,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:48,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629179267] [2023-09-01 04:56:48,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629179267] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:48,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981736531] [2023-09-01 04:56:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:48,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:48,127 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) [2023-09-01 04:56:48,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 04:56:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:48,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:56:48,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:48,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:56:48,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981736531] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:48,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:56:48,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 04:56:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899514839] [2023-09-01 04:56:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:48,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:56:48,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-09-01 04:56:48,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:48,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-09-01 04:56:48,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:48,265 INFO L130 PetriNetUnfolder]: 301/514 cut-off events. [2023-09-01 04:56:48,265 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2023-09-01 04:56:48,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 514 events. 301/514 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2134 event pairs, 48 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1374. Up to 380 conditions per place. [2023-09-01 04:56:48,267 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 32 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-09-01 04:56:48,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 206 flow [2023-09-01 04:56:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:56:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:56:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2023-09-01 04:56:48,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-09-01 04:56:48,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2023-09-01 04:56:48,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2023-09-01 04:56:48,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:48,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2023-09-01 04:56:48,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-09-01 04:56:48,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,272 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 106 flow. Second operand 4 states and 288 transitions. [2023-09-01 04:56:48,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 206 flow [2023-09-01 04:56:48,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:56:48,275 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 87 flow [2023-09-01 04:56:48,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-09-01 04:56:48,277 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-09-01 04:56:48,279 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 87 flow [2023-09-01 04:56:48,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:48,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:56:48,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:48,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:48,487 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:48,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash 869167325, now seen corresponding path program 1 times [2023-09-01 04:56:48,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:48,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520839048] [2023-09-01 04:56:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:48,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520839048] [2023-09-01 04:56:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520839048] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:48,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:48,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:56:48,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931956438] [2023-09-01 04:56:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:48,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:48,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:48,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:48,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:56:48,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:48,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:56:48,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:48,580 INFO L130 PetriNetUnfolder]: 259/454 cut-off events. [2023-09-01 04:56:48,580 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2023-09-01 04:56:48,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 454 events. 259/454 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1942 event pairs, 103 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 1276. Up to 239 conditions per place. [2023-09-01 04:56:48,582 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-09-01 04:56:48,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 223 flow [2023-09-01 04:56:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-09-01 04:56:48,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2023-09-01 04:56:48,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-09-01 04:56:48,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-09-01 04:56:48,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:48,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-09-01 04:56:48,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,590 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 87 flow. Second operand 3 states and 224 transitions. [2023-09-01 04:56:48,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 223 flow [2023-09-01 04:56:48,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:48,592 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 114 flow [2023-09-01 04:56:48,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-09-01 04:56:48,594 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-09-01 04:56:48,594 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 114 flow [2023-09-01 04:56:48,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:48,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:56:48,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 04:56:48,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:48,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:48,595 INFO L85 PathProgramCache]: Analyzing trace with hash 869167324, now seen corresponding path program 1 times [2023-09-01 04:56:48,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:48,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367257950] [2023-09-01 04:56:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:48,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:48,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:48,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367257950] [2023-09-01 04:56:48,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367257950] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:48,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:48,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:56:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41940992] [2023-09-01 04:56:48,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:48,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:56:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:48,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:56:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:56:48,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-09-01 04:56:48,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:48,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-09-01 04:56:48,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:48,685 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2023-09-01 04:56:48,686 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2023-09-01 04:56:48,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 426 events. 237/426 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1842 event pairs, 75 based on Foata normal form. 24/450 useless extension candidates. Maximal degree in co-relation 1358. Up to 263 conditions per place. [2023-09-01 04:56:48,688 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-09-01 04:56:48,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 245 flow [2023-09-01 04:56:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-09-01 04:56:48,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2023-09-01 04:56:48,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-09-01 04:56:48,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-09-01 04:56:48,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:48,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-09-01 04:56:48,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,691 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 114 flow. Second operand 3 states and 223 transitions. [2023-09-01 04:56:48,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 245 flow [2023-09-01 04:56:48,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:56:48,693 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2023-09-01 04:56:48,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-09-01 04:56:48,694 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-09-01 04:56:48,694 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2023-09-01 04:56:48,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:48,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:56:48,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:48,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:48,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877637, now seen corresponding path program 1 times [2023-09-01 04:56:48,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:48,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762034840] [2023-09-01 04:56:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:48,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:48,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762034840] [2023-09-01 04:56:48,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762034840] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:48,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:48,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:56:48,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036112725] [2023-09-01 04:56:48,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:48,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:48,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:56:48,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:48,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:48,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:48,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:48,825 INFO L130 PetriNetUnfolder]: 289/502 cut-off events. [2023-09-01 04:56:48,826 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-09-01 04:56:48,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 502 events. 289/502 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2096 event pairs, 65 based on Foata normal form. 24/526 useless extension candidates. Maximal degree in co-relation 1631. Up to 188 conditions per place. [2023-09-01 04:56:48,828 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-09-01 04:56:48,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 331 flow [2023-09-01 04:56:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:56:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:56:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-09-01 04:56:48,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2023-09-01 04:56:48,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-09-01 04:56:48,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-09-01 04:56:48,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:48,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-09-01 04:56:48,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,831 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,831 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 356 transitions. [2023-09-01 04:56:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 331 flow [2023-09-01 04:56:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:48,832 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 219 flow [2023-09-01 04:56:48,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-09-01 04:56:48,833 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2023-09-01 04:56:48,833 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 219 flow [2023-09-01 04:56:48,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:48,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:48,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 04:56:48,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:48,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2077921346, now seen corresponding path program 1 times [2023-09-01 04:56:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902702616] [2023-09-01 04:56:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:48,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:48,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902702616] [2023-09-01 04:56:48,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902702616] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:48,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:48,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:56:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528662700] [2023-09-01 04:56:48,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:56:48,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:48,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:48,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:48,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:48,940 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2023-09-01 04:56:48,941 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2023-09-01 04:56:48,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 532 events. 301/532 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2318 event pairs, 61 based on Foata normal form. 48/580 useless extension candidates. Maximal degree in co-relation 1966. Up to 216 conditions per place. [2023-09-01 04:56:48,943 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 43 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-09-01 04:56:48,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 438 flow [2023-09-01 04:56:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:56:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:56:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-09-01 04:56:48,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2023-09-01 04:56:48,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-09-01 04:56:48,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-09-01 04:56:48,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:48,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-09-01 04:56:48,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,947 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,947 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 219 flow. Second operand 5 states and 358 transitions. [2023-09-01 04:56:48,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 438 flow [2023-09-01 04:56:48,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 411 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 04:56:48,951 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 281 flow [2023-09-01 04:56:48,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-09-01 04:56:48,952 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-09-01 04:56:48,952 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 281 flow [2023-09-01 04:56:48,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:48,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:48,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:56:48,953 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:48,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877425, now seen corresponding path program 1 times [2023-09-01 04:56:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:48,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362462875] [2023-09-01 04:56:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:48,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362462875] [2023-09-01 04:56:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362462875] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:56:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389136877] [2023-09-01 04:56:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:56:48,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:48,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:48,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:48,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:48,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:49,066 INFO L130 PetriNetUnfolder]: 353/608 cut-off events. [2023-09-01 04:56:49,068 INFO L131 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2023-09-01 04:56:49,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 608 events. 353/608 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2647 event pairs, 63 based on Foata normal form. 24/632 useless extension candidates. Maximal degree in co-relation 2401. Up to 351 conditions per place. [2023-09-01 04:56:49,071 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-09-01 04:56:49,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 536 flow [2023-09-01 04:56:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:56:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:56:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-09-01 04:56:49,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-09-01 04:56:49,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-09-01 04:56:49,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-09-01 04:56:49,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:49,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-09-01 04:56:49,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,075 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,075 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 281 flow. Second operand 5 states and 360 transitions. [2023-09-01 04:56:49,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 536 flow [2023-09-01 04:56:49,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 532 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 04:56:49,078 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 387 flow [2023-09-01 04:56:49,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-09-01 04:56:49,079 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-09-01 04:56:49,080 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 387 flow [2023-09-01 04:56:49,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:49,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:56:49,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:49,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:49,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877424, now seen corresponding path program 1 times [2023-09-01 04:56:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:49,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921766325] [2023-09-01 04:56:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:49,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921766325] [2023-09-01 04:56:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921766325] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:56:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:56:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942309613] [2023-09-01 04:56:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:56:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:56:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:56:49,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:49,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:49,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:49,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:49,162 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2023-09-01 04:56:49,163 INFO L131 PetriNetUnfolder]: For 1945/1945 co-relation queries the response was YES. [2023-09-01 04:56:49,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 432 events. 252/432 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1627 event pairs, 178 based on Foata normal form. 48/480 useless extension candidates. Maximal degree in co-relation 1798. Up to 432 conditions per place. [2023-09-01 04:56:49,165 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 04:56:49,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 28 transitions, 310 flow [2023-09-01 04:56:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:56:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:56:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-09-01 04:56:49,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-09-01 04:56:49,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-09-01 04:56:49,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-09-01 04:56:49,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:49,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-09-01 04:56:49,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,168 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 387 flow. Second operand 3 states and 205 transitions. [2023-09-01 04:56:49,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 28 transitions, 310 flow [2023-09-01 04:56:49,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 263 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-09-01 04:56:49,172 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 209 flow [2023-09-01 04:56:49,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2023-09-01 04:56:49,173 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-09-01 04:56:49,173 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 209 flow [2023-09-01 04:56:49,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:49,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:49,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:56:49,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:49,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:49,174 INFO L85 PathProgramCache]: Analyzing trace with hash -8946286, now seen corresponding path program 1 times [2023-09-01 04:56:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:49,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391349902] [2023-09-01 04:56:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:49,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:49,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:49,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391349902] [2023-09-01 04:56:49,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391349902] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:49,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729815346] [2023-09-01 04:56:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:49,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:49,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:49,235 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) [2023-09-01 04:56:49,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 04:56:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:49,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:56:49,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:49,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729815346] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:49,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:49,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 04:56:49,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589027860] [2023-09-01 04:56:49,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:56:49,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:49,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:56:49,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:56:49,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:49,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 209 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:49,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:49,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:49,448 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2023-09-01 04:56:49,448 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2023-09-01 04:56:49,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 622 events. 361/622 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2480 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2298. Up to 203 conditions per place. [2023-09-01 04:56:49,452 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2023-09-01 04:56:49,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 621 flow [2023-09-01 04:56:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 04:56:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 04:56:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 630 transitions. [2023-09-01 04:56:49,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2023-09-01 04:56:49,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 630 transitions. [2023-09-01 04:56:49,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 630 transitions. [2023-09-01 04:56:49,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:49,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 630 transitions. [2023-09-01 04:56:49,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,458 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,459 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 209 flow. Second operand 9 states and 630 transitions. [2023-09-01 04:56:49,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 621 flow [2023-09-01 04:56:49,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 04:56:49,462 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 474 flow [2023-09-01 04:56:49,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-09-01 04:56:49,463 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2023-09-01 04:56:49,463 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 474 flow [2023-09-01 04:56:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:49,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:49,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:49,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:49,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:49,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1315827018, now seen corresponding path program 1 times [2023-09-01 04:56:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646399436] [2023-09-01 04:56:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:49,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:49,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646399436] [2023-09-01 04:56:49,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646399436] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:49,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198727915] [2023-09-01 04:56:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:49,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:49,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:49,718 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) [2023-09-01 04:56:49,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 04:56:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:49,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 04:56:49,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:49,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:49,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198727915] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:49,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:49,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-09-01 04:56:49,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557989817] [2023-09-01 04:56:49,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:49,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:56:49,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:56:49,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:56:49,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:49,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:49,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:49,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:49,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:50,047 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2023-09-01 04:56:50,047 INFO L131 PetriNetUnfolder]: For 4923/4923 co-relation queries the response was YES. [2023-09-01 04:56:50,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 826 events. 481/826 cut-off events. For 4923/4923 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3313 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3828. Up to 299 conditions per place. [2023-09-01 04:56:50,051 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2023-09-01 04:56:50,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 1182 flow [2023-09-01 04:56:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:56:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:56:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 975 transitions. [2023-09-01 04:56:50,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47055984555984554 [2023-09-01 04:56:50,054 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 975 transitions. [2023-09-01 04:56:50,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 975 transitions. [2023-09-01 04:56:50,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:50,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 975 transitions. [2023-09-01 04:56:50,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,066 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,067 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 474 flow. Second operand 14 states and 975 transitions. [2023-09-01 04:56:50,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 1182 flow [2023-09-01 04:56:50,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1080 flow, removed 46 selfloop flow, removed 3 redundant places. [2023-09-01 04:56:50,074 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 745 flow [2023-09-01 04:56:50,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=745, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2023-09-01 04:56:50,075 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2023-09-01 04:56:50,075 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 745 flow [2023-09-01 04:56:50,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:50,075 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:50,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 04:56:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:50,280 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:50,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -65917474, now seen corresponding path program 2 times [2023-09-01 04:56:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601137151] [2023-09-01 04:56:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:50,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:50,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601137151] [2023-09-01 04:56:50,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601137151] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:50,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185332242] [2023-09-01 04:56:50,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:56:50,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:50,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:50,357 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) [2023-09-01 04:56:50,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 04:56:50,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:56:50,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:56:50,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 04:56:50,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:50,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:56:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185332242] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:56:50,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:56:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-09-01 04:56:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423501151] [2023-09-01 04:56:50,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:56:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:56:50,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:50,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:56:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:56:50,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:50,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 745 flow. Second operand has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:50,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:50,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:50,896 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2023-09-01 04:56:50,896 INFO L131 PetriNetUnfolder]: For 10066/10066 co-relation queries the response was YES. [2023-09-01 04:56:50,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1306 events. 761/1306 cut-off events. For 10066/10066 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5609 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6416. Up to 499 conditions per place. [2023-09-01 04:56:50,905 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2023-09-01 04:56:50,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1967 flow [2023-09-01 04:56:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:56:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:56:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1315 transitions. [2023-09-01 04:56:50,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763869132290187 [2023-09-01 04:56:50,909 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1315 transitions. [2023-09-01 04:56:50,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1315 transitions. [2023-09-01 04:56:50,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:50,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1315 transitions. [2023-09-01 04:56:50,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,918 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,918 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 745 flow. Second operand 19 states and 1315 transitions. [2023-09-01 04:56:50,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1967 flow [2023-09-01 04:56:50,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1908 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-09-01 04:56:50,946 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1417 flow [2023-09-01 04:56:50,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1417, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2023-09-01 04:56:50,946 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2023-09-01 04:56:50,959 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1417 flow [2023-09-01 04:56:50,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:50,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:56:50,959 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:50,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:51,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 04:56:51,164 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:56:51,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:56:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 770837146, now seen corresponding path program 2 times [2023-09-01 04:56:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:56:51,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471216181] [2023-09-01 04:56:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:56:51,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:56:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:56:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:51,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:56:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471216181] [2023-09-01 04:56:51,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471216181] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:56:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202678337] [2023-09-01 04:56:51,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:56:51,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:56:51,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:56:51,280 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) [2023-09-01 04:56:51,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 04:56:51,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:56:51,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:56:51,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 04:56:51,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:56:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:56:51,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:56:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202678337] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:56:51,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:56:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 21 [2023-09-01 04:56:51,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990379377] [2023-09-01 04:56:51,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:56:51,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 04:56:51,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:56:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 04:56:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-09-01 04:56:51,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-09-01 04:56:51,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 1417 flow. Second operand has 9 states, 9 states have (on average 65.11111111111111) internal successors, (586), 9 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:51,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:56:51,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-09-01 04:56:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:56:51,688 INFO L130 PetriNetUnfolder]: 1203/1914 cut-off events. [2023-09-01 04:56:51,688 INFO L131 PetriNetUnfolder]: For 11233/11233 co-relation queries the response was YES. [2023-09-01 04:56:51,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 1914 events. 1203/1914 cut-off events. For 11233/11233 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9068 event pairs, 66 based on Foata normal form. 174/2088 useless extension candidates. Maximal degree in co-relation 9419. Up to 1156 conditions per place. [2023-09-01 04:56:51,697 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 0 selfloop transitions, 0 changer transitions 220/220 dead transitions. [2023-09-01 04:56:51,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 220 transitions, 3079 flow [2023-09-01 04:56:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 04:56:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 04:56:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2023-09-01 04:56:51,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-09-01 04:56:51,698 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2023-09-01 04:56:51,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2023-09-01 04:56:51,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:56:51,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2023-09-01 04:56:51,700 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) [2023-09-01 04:56:51,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:51,701 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:51,701 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1417 flow. Second operand 8 states and 555 transitions. [2023-09-01 04:56:51,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 220 transitions, 3079 flow [2023-09-01 04:56:51,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 220 transitions, 2512 flow, removed 68 selfloop flow, removed 29 redundant places. [2023-09-01 04:56:51,731 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-09-01 04:56:51,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-09-01 04:56:51,732 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 50 predicate places. [2023-09-01 04:56:51,732 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-09-01 04:56:51,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.11111111111111) internal successors, (586), 9 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:56:51,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-09-01 04:56:51,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-09-01 04:56:51,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 04:56:51,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 04:56:51,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 04:56:51,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 04:56:51,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 04:56:51,735 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 04:56:51,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 04:56:51,943 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,SelfDestructingSolverStorable14 [2023-09-01 04:56:51,943 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:56:51,950 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 04:56:51,950 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 04:56:51,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 04:56:51 BasicIcfg [2023-09-01 04:56:51,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 04:56:51,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 04:56:51,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 04:56:51,952 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 04:56:51,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:56:44" (3/4) ... [2023-09-01 04:56:51,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 04:56:51,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 04:56:51,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 04:56:51,963 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 04:56:51,963 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-09-01 04:56:51,963 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 04:56:51,963 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 04:56:51,985 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 04:56:51,985 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 04:56:51,985 INFO L158 Benchmark]: Toolchain (without parser) took 7842.27ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 45.4MB in the beginning and 58.7MB in the end (delta: -13.4MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2023-09-01 04:56:51,986 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:56:51,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.27ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 45.1MB in the beginning and 59.3MB in the end (delta: -14.1MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-09-01 04:56:51,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.43ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 57.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:56:51,986 INFO L158 Benchmark]: Boogie Preprocessor took 36.70ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 55.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:56:51,987 INFO L158 Benchmark]: RCFGBuilder took 314.86ms. Allocated memory is still 83.9MB. Free memory was 55.6MB in the beginning and 41.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 04:56:51,987 INFO L158 Benchmark]: TraceAbstraction took 7058.92ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 40.9MB in the beginning and 61.6MB in the end (delta: -20.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2023-09-01 04:56:51,987 INFO L158 Benchmark]: Witness Printer took 32.98ms. Allocated memory is still 146.8MB. Free memory was 61.6MB in the beginning and 58.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:56:51,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.27ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 45.1MB in the beginning and 59.3MB in the end (delta: -14.1MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.43ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 57.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.70ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 55.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 314.86ms. Allocated memory is still 83.9MB. Free memory was 55.6MB in the beginning and 41.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7058.92ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 40.9MB in the beginning and 61.6MB in the end (delta: -20.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * Witness Printer took 32.98ms. Allocated memory is still 146.8MB. Free memory was 61.6MB in the beginning and 58.7MB in the end (delta: 2.9MB). 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: 1.8s, 77 PlacesBefore, 25 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1802 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 1843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1524, independent: 1502, independent conditional: 0, independent unconditional: 1502, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 981, independent: 970, independent conditional: 0, independent unconditional: 970, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1524, independent: 532, independent conditional: 0, independent unconditional: 532, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 981, unknown conditional: 0, unknown unconditional: 981] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: 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, 107 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: 6.9s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 868 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 779 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1056 IncrementalHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 26 mSDtfsCounter, 1056 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1417occurred in iteration=14, InterpolantAutomatonStates: 91, 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, 0.9s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 12 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 38/118 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! [2023-09-01 04:56:52,014 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