./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack-1.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/stack-1.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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --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 04:42:40,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:42:40,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:42:40,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:42:40,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:42:40,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:42:40,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:42:40,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:42:40,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:42:40,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:42:40,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:42:40,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:42:40,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:42:40,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:42:40,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:42:40,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:42:40,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:42:40,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:42:40,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:42:40,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:42:40,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:42:40,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:42:40,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:42:40,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:42:40,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:42:40,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:42:40,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:42:40,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:42:40,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:42:40,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:42:40,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:42:40,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:42:40,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:42:40,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:42:40,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:42:40,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:42:40,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:42:40,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:42:40,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:42:40,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:42:40,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:42:40,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:42:40,678 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:42:40,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:42:40,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:42:40,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:42:40,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:42:40,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:42:40,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:42:40,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:42:40,681 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:42:40,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:42:40,683 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:42:40,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:42:40,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:42:40,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:42:40,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:42:40,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:42:40,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:42:40,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:42:40,684 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:42:40,684 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:42:40,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:42:40,685 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:42:40,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:42:40,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:42:40,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:42:40,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:42:40,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:42:40,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:42:40,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:42:40,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:42:40,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:42:40,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:42:40,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:42:40,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:42:40,687 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:42:40,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:42:40,688 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:42:40,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:42:41,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:42:41,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:42:41,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:42:41,025 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:42:41,025 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:42:41,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2023-09-01 04:42:42,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:42:42,685 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:42:42,689 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2023-09-01 04:42:42,703 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10aac232b/99a32f9a5a9e458f817044609ea7be9a/FLAGe74f63c7c [2023-09-01 04:42:42,721 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10aac232b/99a32f9a5a9e458f817044609ea7be9a [2023-09-01 04:42:42,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:42:42,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:42:42,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:42:42,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:42:42,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:42:42,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:42:42" (1/1) ... [2023-09-01 04:42:42,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547e7bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:42, skipping insertion in model container [2023-09-01 04:42:42,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:42:42" (1/1) ... [2023-09-01 04:42:42,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:42:42,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:42:43,145 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/stack-1.i[41520,41533] [2023-09-01 04:42:43,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:42:43,193 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:42:43,227 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/stack-1.i[41520,41533] [2023-09-01 04:42:43,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:42:43,285 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:42:43,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43 WrapperNode [2023-09-01 04:42:43,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:42:43,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:42:43,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:42:43,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:42:43,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,342 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 161 [2023-09-01 04:42:43,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:42:43,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:42:43,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:42:43,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:42:43,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,368 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:42:43,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:42:43,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:42:43,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:42:43,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (1/1) ... [2023-09-01 04:42:43,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:42:43,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:42:43,410 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 04:42:43,438 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 04:42:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 04:42:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 04:42:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 04:42:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:42:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:42:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:42:43,456 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 04:42:43,612 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:42:43,614 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:42:43,951 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:42:43,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:42:43,972 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:42:43,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:42:43 BoogieIcfgContainer [2023-09-01 04:42:43,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:42:43,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:42:43,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:42:44,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:42:44,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:42:42" (1/3) ... [2023-09-01 04:42:44,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364c4f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:42:44, skipping insertion in model container [2023-09-01 04:42:44,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:42:43" (2/3) ... [2023-09-01 04:42:44,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364c4f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:42:44, skipping insertion in model container [2023-09-01 04:42:44,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:42:43" (3/3) ... [2023-09-01 04:42:44,008 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-09-01 04:42:44,015 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:42:44,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:42:44,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 04:42:44,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:42:44,166 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:42:44,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 169 transitions, 354 flow [2023-09-01 04:42:44,289 INFO L130 PetriNetUnfolder]: 10/167 cut-off events. [2023-09-01 04:42:44,290 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:42:44,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 10/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 426 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-09-01 04:42:44,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 169 transitions, 354 flow [2023-09-01 04:42:44,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 158 transitions, 325 flow [2023-09-01 04:42:44,308 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:42:44,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 158 transitions, 325 flow [2023-09-01 04:42:44,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 158 transitions, 325 flow [2023-09-01 04:42:44,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 158 transitions, 325 flow [2023-09-01 04:42:44,359 INFO L130 PetriNetUnfolder]: 10/158 cut-off events. [2023-09-01 04:42:44,359 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:42:44,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 158 events. 10/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 363 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-09-01 04:42:44,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-09-01 04:42:48,406 INFO L134 LiptonReduction]: Checked pairs total: 11973 [2023-09-01 04:42:48,406 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-09-01 04:42:48,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:42:48,426 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;@777e262c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:42:48,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 04:42:48,432 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-09-01 04:42:48,433 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:42:48,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:48,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:48,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:48,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:48,439 INFO L85 PathProgramCache]: Analyzing trace with hash 844935299, now seen corresponding path program 1 times [2023-09-01 04:42:48,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:48,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280727218] [2023-09-01 04:42:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:48,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:48,819 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 04:42:48,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:48,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280727218] [2023-09-01 04:42:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280727218] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852557785] [2023-09-01 04:42:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:48,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:48,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:48,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:48,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 314 [2023-09-01 04:42:48,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:48,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:48,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 314 [2023-09-01 04:42:48,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:49,227 INFO L130 PetriNetUnfolder]: 1174/1921 cut-off events. [2023-09-01 04:42:49,228 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-09-01 04:42:49,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3888 conditions, 1921 events. 1174/1921 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8664 event pairs, 456 based on Foata normal form. 0/1314 useless extension candidates. Maximal degree in co-relation 3632. Up to 1295 conditions per place. [2023-09-01 04:42:49,240 INFO L137 encePairwiseOnDemand]: 307/314 looper letters, 60 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-09-01 04:42:49,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 269 flow [2023-09-01 04:42:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-09-01 04:42:49,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520169851380042 [2023-09-01 04:42:49,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-09-01 04:42:49,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-09-01 04:42:49,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:49,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-09-01 04:42:49,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:49,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:49,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:49,269 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 520 transitions. [2023-09-01 04:42:49,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 269 flow [2023-09-01 04:42:49,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:42:49,275 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-09-01 04:42:49,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-09-01 04:42:49,279 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-09-01 04:42:49,280 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-09-01 04:42:49,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:49,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:49,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:49,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:42:49,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:49,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash -160824553, now seen corresponding path program 1 times [2023-09-01 04:42:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281510375] [2023-09-01 04:42:49,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:49,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:49,347 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 04:42:49,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281510375] [2023-09-01 04:42:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281510375] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:49,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888416085] [2023-09-01 04:42:49,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:49,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:49,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:49,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:49,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-09-01 04:42:49,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 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 04:42:49,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:49,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-09-01 04:42:49,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:49,664 INFO L130 PetriNetUnfolder]: 1731/2926 cut-off events. [2023-09-01 04:42:49,664 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-09-01 04:42:49,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 2926 events. 1731/2926 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15020 event pairs, 883 based on Foata normal form. 0/2350 useless extension candidates. Maximal degree in co-relation 5548. Up to 1779 conditions per place. [2023-09-01 04:42:49,678 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-09-01 04:42:49,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 330 flow [2023-09-01 04:42:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-09-01 04:42:49,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679405520169851 [2023-09-01 04:42:49,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-09-01 04:42:49,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-09-01 04:42:49,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:49,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-09-01 04:42:49,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 04:42:49,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:49,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:49,687 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 535 transitions. [2023-09-01 04:42:49,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 330 flow [2023-09-01 04:42:49,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:49,691 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-09-01 04:42:49,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-09-01 04:42:49,692 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-09-01 04:42:49,692 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-09-01 04:42:49,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 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 04:42:49,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:49,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:42:49,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:49,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1061347061, now seen corresponding path program 1 times [2023-09-01 04:42:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:49,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654887868] [2023-09-01 04:42:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:49,766 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 04:42:49,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:49,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654887868] [2023-09-01 04:42:49,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654887868] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:49,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:49,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:49,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222259491] [2023-09-01 04:42:49,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:49,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:49,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:49,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:49,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:49,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-09-01 04:42:49,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:49,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:49,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-09-01 04:42:49,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:50,141 INFO L130 PetriNetUnfolder]: 2246/3651 cut-off events. [2023-09-01 04:42:50,143 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-09-01 04:42:50,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 3651 events. 2246/3651 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20134 event pairs, 1026 based on Foata normal form. 0/2997 useless extension candidates. Maximal degree in co-relation 6322. Up to 2950 conditions per place. [2023-09-01 04:42:50,160 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 68 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-09-01 04:42:50,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 338 flow [2023-09-01 04:42:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-09-01 04:42:50,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564755838641189 [2023-09-01 04:42:50,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-09-01 04:42:50,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-09-01 04:42:50,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:50,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-09-01 04:42:50,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 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 04:42:50,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:50,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:50,167 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 532 transitions. [2023-09-01 04:42:50,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 338 flow [2023-09-01 04:42:50,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:50,171 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-09-01 04:42:50,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-09-01 04:42:50,172 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-09-01 04:42:50,172 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-09-01 04:42:50,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:50,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:50,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:50,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:42:50,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:50,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:50,174 INFO L85 PathProgramCache]: Analyzing trace with hash -508596047, now seen corresponding path program 1 times [2023-09-01 04:42:50,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989791426] [2023-09-01 04:42:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:50,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:50,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989791426] [2023-09-01 04:42:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989791426] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:50,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:50,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:50,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592844575] [2023-09-01 04:42:50,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:50,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:50,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:50,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-09-01 04:42:50,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:50,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:50,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-09-01 04:42:50,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:50,616 INFO L130 PetriNetUnfolder]: 1976/3327 cut-off events. [2023-09-01 04:42:50,617 INFO L131 PetriNetUnfolder]: For 582/582 co-relation queries the response was YES. [2023-09-01 04:42:50,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 3327 events. 1976/3327 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18153 event pairs, 95 based on Foata normal form. 0/2929 useless extension candidates. Maximal degree in co-relation 7268. Up to 3041 conditions per place. [2023-09-01 04:42:50,636 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 60 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-09-01 04:42:50,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 315 flow [2023-09-01 04:42:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-09-01 04:42:50,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509554140127388 [2023-09-01 04:42:50,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-09-01 04:42:50,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-09-01 04:42:50,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:50,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-09-01 04:42:50,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 04:42:50,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:50,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:50,649 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 519 transitions. [2023-09-01 04:42:50,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 315 flow [2023-09-01 04:42:50,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:50,653 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-09-01 04:42:50,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-09-01 04:42:50,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-09-01 04:42:50,656 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-09-01 04:42:50,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:50,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:50,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:50,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:42:50,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:50,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash -508596003, now seen corresponding path program 1 times [2023-09-01 04:42:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:50,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272124976] [2023-09-01 04:42:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:42:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272124976] [2023-09-01 04:42:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272124976] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:50,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:50,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353483647] [2023-09-01 04:42:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:50,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:50,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:50,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:50,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-09-01 04:42:50,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 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 04:42:50,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:50,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-09-01 04:42:50,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:51,015 INFO L130 PetriNetUnfolder]: 1863/3136 cut-off events. [2023-09-01 04:42:51,015 INFO L131 PetriNetUnfolder]: For 629/629 co-relation queries the response was YES. [2023-09-01 04:42:51,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 3136 events. 1863/3136 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16925 event pairs, 305 based on Foata normal form. 0/2826 useless extension candidates. Maximal degree in co-relation 6868. Up to 2390 conditions per place. [2023-09-01 04:42:51,034 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 57 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-09-01 04:42:51,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 311 flow [2023-09-01 04:42:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-09-01 04:42:51,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477707006369427 [2023-09-01 04:42:51,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-09-01 04:42:51,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-09-01 04:42:51,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:51,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-09-01 04:42:51,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:51,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:51,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:51,042 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 516 transitions. [2023-09-01 04:42:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 311 flow [2023-09-01 04:42:51,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:51,044 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-09-01 04:42:51,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-09-01 04:42:51,045 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-09-01 04:42:51,045 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-09-01 04:42:51,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 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 04:42:51,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:51,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:51,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:42:51,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:51,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash 368720070, now seen corresponding path program 1 times [2023-09-01 04:42:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:51,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129832266] [2023-09-01 04:42:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:51,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129832266] [2023-09-01 04:42:51,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129832266] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:42:51,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944473670] [2023-09-01 04:42:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:51,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:42:51,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:42:51,145 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 04:42:51,173 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 04:42:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:51,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:42:51,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:42:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:51,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:42:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:51,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944473670] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:42:51,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:42:51,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-09-01 04:42:51,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107510255] [2023-09-01 04:42:51,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:42:51,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:42:51,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:51,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:42:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:42:51,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-09-01 04:42:51,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 148.7) internal successors, (1487), 10 states have internal predecessors, (1487), 0 states have call successors, (0), 0 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 04:42:51,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:51,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-09-01 04:42:51,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:52,344 INFO L130 PetriNetUnfolder]: 4164/6893 cut-off events. [2023-09-01 04:42:52,344 INFO L131 PetriNetUnfolder]: For 3791/3791 co-relation queries the response was YES. [2023-09-01 04:42:52,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17358 conditions, 6893 events. 4164/6893 cut-off events. For 3791/3791 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39128 event pairs, 675 based on Foata normal form. 146/6435 useless extension candidates. Maximal degree in co-relation 16770. Up to 2039 conditions per place. [2023-09-01 04:42:52,387 INFO L137 encePairwiseOnDemand]: 302/314 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-09-01 04:42:52,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-09-01 04:42:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:42:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:42:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2273 transitions. [2023-09-01 04:42:52,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170609645131938 [2023-09-01 04:42:52,394 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2273 transitions. [2023-09-01 04:42:52,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2273 transitions. [2023-09-01 04:42:52,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:52,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2273 transitions. [2023-09-01 04:42:52,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.35714285714286) internal successors, (2273), 14 states have internal predecessors, (2273), 0 states have call successors, (0), 0 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 04:42:52,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 314.0) internal successors, (4710), 15 states have internal predecessors, (4710), 0 states have call successors, (0), 0 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 04:42:52,410 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 314.0) internal successors, (4710), 15 states have internal predecessors, (4710), 0 states have call successors, (0), 0 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 04:42:52,410 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2273 transitions. [2023-09-01 04:42:52,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-09-01 04:42:52,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:52,432 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-09-01 04:42:52,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-09-01 04:42:52,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-09-01 04:42:52,433 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-09-01 04:42:52,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 148.7) internal successors, (1487), 10 states have internal predecessors, (1487), 0 states have call successors, (0), 0 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 04:42:52,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:52,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:52,448 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 04:42:52,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 04:42:52,642 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 04:42:52,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash 526856183, now seen corresponding path program 1 times [2023-09-01 04:42:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574602920] [2023-09-01 04:42:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:52,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:52,746 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 04:42:52,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574602920] [2023-09-01 04:42:52,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574602920] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:52,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:52,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 04:42:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312342301] [2023-09-01 04:42:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:52,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:52,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:52,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 314 [2023-09-01 04:42:52,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 04:42:52,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:52,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 314 [2023-09-01 04:42:52,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:53,192 INFO L130 PetriNetUnfolder]: 1972/3341 cut-off events. [2023-09-01 04:42:53,192 INFO L131 PetriNetUnfolder]: For 3438/3438 co-relation queries the response was YES. [2023-09-01 04:42:53,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 3341 events. 1972/3341 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17524 event pairs, 419 based on Foata normal form. 212/3301 useless extension candidates. Maximal degree in co-relation 9582. Up to 2429 conditions per place. [2023-09-01 04:42:53,208 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-09-01 04:42:53,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 532 flow [2023-09-01 04:42:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-09-01 04:42:53,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403397027600849 [2023-09-01 04:42:53,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-09-01 04:42:53,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-09-01 04:42:53,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:53,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-09-01 04:42:53,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 04:42:53,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:53,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:53,215 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 509 transitions. [2023-09-01 04:42:53,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 532 flow [2023-09-01 04:42:53,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 499 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-09-01 04:42:53,233 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-09-01 04:42:53,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-09-01 04:42:53,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-09-01 04:42:53,234 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-09-01 04:42:53,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 04:42:53,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:53,235 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:53,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:42:53,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:53,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1455462650, now seen corresponding path program 1 times [2023-09-01 04:42:53,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:53,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108616264] [2023-09-01 04:42:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:53,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108616264] [2023-09-01 04:42:53,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108616264] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:42:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013385976] [2023-09-01 04:42:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:53,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:42:53,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:42:53,305 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 04:42:53,331 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 04:42:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:53,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:42:53,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:42:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:53,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:42:53,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013385976] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:53,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 04:42:53,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-09-01 04:42:53,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575562613] [2023-09-01 04:42:53,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:42:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:42:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:42:53,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-09-01 04:42:53,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 04:42:53,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:53,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-09-01 04:42:53,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:53,811 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-09-01 04:42:53,812 INFO L131 PetriNetUnfolder]: For 3023/3023 co-relation queries the response was YES. [2023-09-01 04:42:53,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3023/3023 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15682 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-09-01 04:42:53,829 INFO L137 encePairwiseOnDemand]: 303/314 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-09-01 04:42:53,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-09-01 04:42:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:42:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:42:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 955 transitions. [2023-09-01 04:42:53,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069002123142251 [2023-09-01 04:42:53,833 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 955 transitions. [2023-09-01 04:42:53,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 955 transitions. [2023-09-01 04:42:53,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:53,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 955 transitions. [2023-09-01 04:42:53,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 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 04:42:53,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 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 04:42:53,839 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 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 04:42:53,839 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 955 transitions. [2023-09-01 04:42:53,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-09-01 04:42:53,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:53,846 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-09-01 04:42:53,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-09-01 04:42:53,849 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 04:42:53,849 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-09-01 04:42:53,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 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 04:42:53,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:53,850 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:42:53,859 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 04:42:54,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-09-01 04:42:54,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:54,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1992356996, now seen corresponding path program 1 times [2023-09-01 04:42:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:54,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070310630] [2023-09-01 04:42:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:42:54,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:54,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070310630] [2023-09-01 04:42:54,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070310630] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:54,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:54,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738197448] [2023-09-01 04:42:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:54,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:54,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:54,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-09-01 04:42:54,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 04:42:54,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:54,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-09-01 04:42:54,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:54,423 INFO L130 PetriNetUnfolder]: 1623/2884 cut-off events. [2023-09-01 04:42:54,423 INFO L131 PetriNetUnfolder]: For 3610/3614 co-relation queries the response was YES. [2023-09-01 04:42:54,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 2884 events. 1623/2884 cut-off events. For 3610/3614 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14119 event pairs, 471 based on Foata normal form. 4/2766 useless extension candidates. Maximal degree in co-relation 5244. Up to 1816 conditions per place. [2023-09-01 04:42:54,438 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 83 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-09-01 04:42:54,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 712 flow [2023-09-01 04:42:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-09-01 04:42:54,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424628450106157 [2023-09-01 04:42:54,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-09-01 04:42:54,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-09-01 04:42:54,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:54,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-09-01 04:42:54,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 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 04:42:54,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:54,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:54,445 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 511 transitions. [2023-09-01 04:42:54,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 712 flow [2023-09-01 04:42:54,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 704 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 04:42:54,452 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 408 flow [2023-09-01 04:42:54,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-09-01 04:42:54,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 04:42:54,454 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 408 flow [2023-09-01 04:42:54,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 04:42:54,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:54,454 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-09-01 04:42:54,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:42:54,455 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:54,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1992357056, now seen corresponding path program 1 times [2023-09-01 04:42:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657044902] [2023-09-01 04:42:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:54,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:54,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657044902] [2023-09-01 04:42:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657044902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:54,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:42:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403673965] [2023-09-01 04:42:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:54,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:42:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:42:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:42:54,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-09-01 04:42:54,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 04:42:54,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:54,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-09-01 04:42:54,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:54,745 INFO L130 PetriNetUnfolder]: 1445/2588 cut-off events. [2023-09-01 04:42:54,745 INFO L131 PetriNetUnfolder]: For 4313/4325 co-relation queries the response was YES. [2023-09-01 04:42:54,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8467 conditions, 2588 events. 1445/2588 cut-off events. For 4313/4325 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12539 event pairs, 437 based on Foata normal form. 128/2710 useless extension candidates. Maximal degree in co-relation 7976. Up to 2546 conditions per place. [2023-09-01 04:42:54,759 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 71 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-09-01 04:42:54,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 597 flow [2023-09-01 04:42:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:42:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:42:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-09-01 04:42:54,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535031847133758 [2023-09-01 04:42:54,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-09-01 04:42:54,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-09-01 04:42:54,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:54,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-09-01 04:42:54,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 04:42:54,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:54,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:54,766 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 408 flow. Second operand 3 states and 504 transitions. [2023-09-01 04:42:54,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 597 flow [2023-09-01 04:42:54,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 593 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:54,774 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 402 flow [2023-09-01 04:42:54,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-09-01 04:42:54,776 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 04:42:54,776 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 402 flow [2023-09-01 04:42:54,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 04:42:54,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:54,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:54,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:42:54,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:54,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1503408652, now seen corresponding path program 1 times [2023-09-01 04:42:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:54,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584139175] [2023-09-01 04:42:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:54,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584139175] [2023-09-01 04:42:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584139175] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:54,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:54,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 04:42:54,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531958321] [2023-09-01 04:42:54,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:54,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 04:42:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:54,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 04:42:54,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 04:42:54,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-09-01 04:42:54,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 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 04:42:54,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:54,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-09-01 04:42:54,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:55,358 INFO L130 PetriNetUnfolder]: 1581/2844 cut-off events. [2023-09-01 04:42:55,359 INFO L131 PetriNetUnfolder]: For 4134/4134 co-relation queries the response was YES. [2023-09-01 04:42:55,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9126 conditions, 2844 events. 1581/2844 cut-off events. For 4134/4134 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13561 event pairs, 395 based on Foata normal form. 24/2862 useless extension candidates. Maximal degree in co-relation 8918. Up to 1665 conditions per place. [2023-09-01 04:42:55,374 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 106 selfloop transitions, 14 changer transitions 9/130 dead transitions. [2023-09-01 04:42:55,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 130 transitions, 942 flow [2023-09-01 04:42:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:42:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:42:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1082 transitions. [2023-09-01 04:42:55,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49226569608735216 [2023-09-01 04:42:55,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1082 transitions. [2023-09-01 04:42:55,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1082 transitions. [2023-09-01 04:42:55,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:55,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1082 transitions. [2023-09-01 04:42:55,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.57142857142858) internal successors, (1082), 7 states have internal predecessors, (1082), 0 states have call successors, (0), 0 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 04:42:55,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:55,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:55,385 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 402 flow. Second operand 7 states and 1082 transitions. [2023-09-01 04:42:55,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 130 transitions, 942 flow [2023-09-01 04:42:55,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 941 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:55,394 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 506 flow [2023-09-01 04:42:55,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-09-01 04:42:55,395 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-09-01 04:42:55,395 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 506 flow [2023-09-01 04:42:55,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 0 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 04:42:55,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:55,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:55,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:42:55,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:55,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash 12520344, now seen corresponding path program 1 times [2023-09-01 04:42:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:55,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286307162] [2023-09-01 04:42:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:55,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286307162] [2023-09-01 04:42:55,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286307162] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:42:55,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:42:55,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 04:42:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685661117] [2023-09-01 04:42:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:42:55,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:42:55,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:42:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:42:55,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-09-01 04:42:55,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 04:42:55,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:55,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-09-01 04:42:55,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:55,941 INFO L130 PetriNetUnfolder]: 1991/3558 cut-off events. [2023-09-01 04:42:55,942 INFO L131 PetriNetUnfolder]: For 6442/6442 co-relation queries the response was YES. [2023-09-01 04:42:55,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11951 conditions, 3558 events. 1991/3558 cut-off events. For 6442/6442 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 18341 event pairs, 408 based on Foata normal form. 16/3568 useless extension candidates. Maximal degree in co-relation 11738. Up to 1703 conditions per place. [2023-09-01 04:42:55,966 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 101 selfloop transitions, 22 changer transitions 0/124 dead transitions. [2023-09-01 04:42:55,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 1057 flow [2023-09-01 04:42:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:42:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:42:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2023-09-01 04:42:55,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513375796178344 [2023-09-01 04:42:55,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2023-09-01 04:42:55,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2023-09-01 04:42:55,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:55,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2023-09-01 04:42:55,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 0 states have call successors, (0), 0 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 04:42:55,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:55,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:42:55,976 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 506 flow. Second operand 5 states and 806 transitions. [2023-09-01 04:42:55,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 1057 flow [2023-09-01 04:42:55,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 124 transitions, 1049 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 04:42:55,989 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 689 flow [2023-09-01 04:42:55,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-09-01 04:42:55,992 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-09-01 04:42:55,992 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 689 flow [2023-09-01 04:42:55,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 04:42:55,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:55,993 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-09-01 04:42:55,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 04:42:55,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:55,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1115528668, now seen corresponding path program 1 times [2023-09-01 04:42:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:55,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363855634] [2023-09-01 04:42:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:55,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:56,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363855634] [2023-09-01 04:42:56,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363855634] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:42:56,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211808326] [2023-09-01 04:42:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:56,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:42:56,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:42:56,194 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 04:42:56,197 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 04:42:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:56,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:42:56,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:42:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:56,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:42:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:56,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211808326] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:42:56,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:42:56,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 04:42:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089375525] [2023-09-01 04:42:56,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:42:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 04:42:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:56,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 04:42:56,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-01 04:42:56,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-09-01 04:42:56,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 149.05555555555554) internal successors, (2683), 18 states have internal predecessors, (2683), 0 states have call successors, (0), 0 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 04:42:56,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:56,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-09-01 04:42:56,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:57,839 INFO L130 PetriNetUnfolder]: 3443/6138 cut-off events. [2023-09-01 04:42:57,840 INFO L131 PetriNetUnfolder]: For 18166/18166 co-relation queries the response was YES. [2023-09-01 04:42:57,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21801 conditions, 6138 events. 3443/6138 cut-off events. For 18166/18166 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 30311 event pairs, 719 based on Foata normal form. 194/6332 useless extension candidates. Maximal degree in co-relation 21584. Up to 1426 conditions per place. [2023-09-01 04:42:57,895 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 276 selfloop transitions, 63 changer transitions 3/343 dead transitions. [2023-09-01 04:42:57,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 343 transitions, 2846 flow [2023-09-01 04:42:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:42:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:42:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3044 transitions. [2023-09-01 04:42:57,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102246061012403 [2023-09-01 04:42:57,905 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3044 transitions. [2023-09-01 04:42:57,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3044 transitions. [2023-09-01 04:42:57,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:57,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3044 transitions. [2023-09-01 04:42:57,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 160.21052631578948) internal successors, (3044), 19 states have internal predecessors, (3044), 0 states have call successors, (0), 0 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 04:42:57,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 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 04:42:57,925 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 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 04:42:57,925 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 689 flow. Second operand 19 states and 3044 transitions. [2023-09-01 04:42:57,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 343 transitions, 2846 flow [2023-09-01 04:42:57,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 343 transitions, 2825 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 04:42:57,956 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 1294 flow [2023-09-01 04:42:57,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1294, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2023-09-01 04:42:57,957 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-09-01 04:42:57,957 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 1294 flow [2023-09-01 04:42:57,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 149.05555555555554) internal successors, (2683), 18 states have internal predecessors, (2683), 0 states have call successors, (0), 0 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 04:42:57,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:57,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:57,971 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 04:42:58,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:42:58,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:42:58,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:42:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash -341440793, now seen corresponding path program 1 times [2023-09-01 04:42:58,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:42:58,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917550436] [2023-09-01 04:42:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:42:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:58,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:42:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917550436] [2023-09-01 04:42:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917550436] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:42:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918745904] [2023-09-01 04:42:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:42:58,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:42:58,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:42:58,355 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 04:42:58,358 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 04:42:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:42:58,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:42:58,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:42:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:58,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:42:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:42:58,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918745904] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:42:58,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:42:58,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-09-01 04:42:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90502760] [2023-09-01 04:42:58,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:42:58,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:42:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:42:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:42:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:42:58,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 314 [2023-09-01 04:42:58,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 1294 flow. Second operand has 16 states, 16 states have (on average 143.0) internal successors, (2288), 16 states have internal predecessors, (2288), 0 states have call successors, (0), 0 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 04:42:58,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:42:58,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 314 [2023-09-01 04:42:58,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:42:59,752 INFO L130 PetriNetUnfolder]: 3773/6716 cut-off events. [2023-09-01 04:42:59,752 INFO L131 PetriNetUnfolder]: For 22994/22994 co-relation queries the response was YES. [2023-09-01 04:42:59,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24748 conditions, 6716 events. 3773/6716 cut-off events. For 22994/22994 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 34129 event pairs, 735 based on Foata normal form. 64/6780 useless extension candidates. Maximal degree in co-relation 24524. Up to 3406 conditions per place. [2023-09-01 04:42:59,801 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 140 selfloop transitions, 79 changer transitions 21/241 dead transitions. [2023-09-01 04:42:59,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 241 transitions, 2405 flow [2023-09-01 04:42:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 04:42:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 04:42:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2232 transitions. [2023-09-01 04:42:59,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47388535031847134 [2023-09-01 04:42:59,807 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2232 transitions. [2023-09-01 04:42:59,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2232 transitions. [2023-09-01 04:42:59,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:42:59,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2232 transitions. [2023-09-01 04:42:59,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 148.8) internal successors, (2232), 15 states have internal predecessors, (2232), 0 states have call successors, (0), 0 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 04:42:59,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 314.0) internal successors, (5024), 16 states have internal predecessors, (5024), 0 states have call successors, (0), 0 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 04:42:59,819 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 314.0) internal successors, (5024), 16 states have internal predecessors, (5024), 0 states have call successors, (0), 0 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 04:42:59,819 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 1294 flow. Second operand 15 states and 2232 transitions. [2023-09-01 04:42:59,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 241 transitions, 2405 flow [2023-09-01 04:42:59,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 2211 flow, removed 55 selfloop flow, removed 9 redundant places. [2023-09-01 04:42:59,868 INFO L231 Difference]: Finished difference. Result has 107 places, 118 transitions, 1392 flow [2023-09-01 04:42:59,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1392, PETRI_PLACES=107, PETRI_TRANSITIONS=118} [2023-09-01 04:42:59,869 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2023-09-01 04:42:59,869 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 118 transitions, 1392 flow [2023-09-01 04:42:59,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.0) internal successors, (2288), 16 states have internal predecessors, (2288), 0 states have call successors, (0), 0 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 04:42:59,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:42:59,870 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:42:59,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:00,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:00,076 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:00,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 117434737, now seen corresponding path program 2 times [2023-09-01 04:43:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:00,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607835842] [2023-09-01 04:43:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:43:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607835842] [2023-09-01 04:43:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607835842] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:43:00,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:43:00,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:43:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054574265] [2023-09-01 04:43:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:43:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:43:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:00,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:43:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 04:43:00,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-09-01 04:43:00,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 118 transitions, 1392 flow. Second operand has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 04:43:00,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:00,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-09-01 04:43:00,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:00,773 INFO L130 PetriNetUnfolder]: 2588/4665 cut-off events. [2023-09-01 04:43:00,773 INFO L131 PetriNetUnfolder]: For 14947/14947 co-relation queries the response was YES. [2023-09-01 04:43:00,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17242 conditions, 4665 events. 2588/4665 cut-off events. For 14947/14947 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 21888 event pairs, 413 based on Foata normal form. 84/4749 useless extension candidates. Maximal degree in co-relation 17016. Up to 3150 conditions per place. [2023-09-01 04:43:00,811 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 71 selfloop transitions, 62 changer transitions 0/134 dead transitions. [2023-09-01 04:43:00,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 1538 flow [2023-09-01 04:43:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:43:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:43:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1041 transitions. [2023-09-01 04:43:00,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47361237488626023 [2023-09-01 04:43:00,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1041 transitions. [2023-09-01 04:43:00,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1041 transitions. [2023-09-01 04:43:00,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:00,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1041 transitions. [2023-09-01 04:43:00,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 04:43:00,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:43:00,821 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:43:00,821 INFO L175 Difference]: Start difference. First operand has 107 places, 118 transitions, 1392 flow. Second operand 7 states and 1041 transitions. [2023-09-01 04:43:00,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 1538 flow [2023-09-01 04:43:00,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 134 transitions, 1450 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-09-01 04:43:00,861 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 1215 flow [2023-09-01 04:43:00,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1215, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2023-09-01 04:43:00,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-09-01 04:43:00,862 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 1215 flow [2023-09-01 04:43:00,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 04:43:00,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:00,862 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:00,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 04:43:00,863 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:00,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1894392210, now seen corresponding path program 1 times [2023-09-01 04:43:00,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:00,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043745165] [2023-09-01 04:43:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 04:43:01,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043745165] [2023-09-01 04:43:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043745165] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476190855] [2023-09-01 04:43:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:01,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:01,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:01,044 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 04:43:01,070 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 04:43:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:01,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 04:43:01,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:01,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476190855] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:01,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:01,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-09-01 04:43:01,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147528654] [2023-09-01 04:43:01,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:01,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 04:43:01,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:01,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 04:43:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-09-01 04:43:01,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-09-01 04:43:01,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 1215 flow. Second operand has 16 states, 16 states have (on average 145.125) internal successors, (2322), 16 states have internal predecessors, (2322), 0 states have call successors, (0), 0 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 04:43:01,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:01,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-09-01 04:43:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:02,470 INFO L130 PetriNetUnfolder]: 3563/6402 cut-off events. [2023-09-01 04:43:02,470 INFO L131 PetriNetUnfolder]: For 20795/20795 co-relation queries the response was YES. [2023-09-01 04:43:02,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24063 conditions, 6402 events. 3563/6402 cut-off events. For 20795/20795 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 32710 event pairs, 505 based on Foata normal form. 44/6446 useless extension candidates. Maximal degree in co-relation 23836. Up to 1619 conditions per place. [2023-09-01 04:43:02,517 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 225 selfloop transitions, 80 changer transitions 0/306 dead transitions. [2023-09-01 04:43:02,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 306 transitions, 3050 flow [2023-09-01 04:43:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:43:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:43:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2866 transitions. [2023-09-01 04:43:02,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48038887026483407 [2023-09-01 04:43:02,526 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2866 transitions. [2023-09-01 04:43:02,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2866 transitions. [2023-09-01 04:43:02,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:02,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2866 transitions. [2023-09-01 04:43:02,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 150.8421052631579) internal successors, (2866), 19 states have internal predecessors, (2866), 0 states have call successors, (0), 0 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 04:43:02,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 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 04:43:02,544 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 0 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 04:43:02,545 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 1215 flow. Second operand 19 states and 2866 transitions. [2023-09-01 04:43:02,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 306 transitions, 3050 flow [2023-09-01 04:43:02,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 306 transitions, 2864 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-09-01 04:43:02,599 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 1804 flow [2023-09-01 04:43:02,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1804, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2023-09-01 04:43:02,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2023-09-01 04:43:02,602 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 1804 flow [2023-09-01 04:43:02,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 145.125) internal successors, (2322), 16 states have internal predecessors, (2322), 0 states have call successors, (0), 0 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 04:43:02,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:02,603 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:02,609 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 04:43:02,809 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,SelfDestructingSolverStorable15 [2023-09-01 04:43:02,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:02,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1791692103, now seen corresponding path program 2 times [2023-09-01 04:43:02,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:02,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202744152] [2023-09-01 04:43:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:03,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202744152] [2023-09-01 04:43:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202744152] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132883726] [2023-09-01 04:43:03,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:43:03,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:03,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:03,093 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 04:43:03,096 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 04:43:03,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:43:03,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:43:03,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 04:43:03,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:03,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 04:43:03,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132883726] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:03,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:03,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-09-01 04:43:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020991652] [2023-09-01 04:43:03,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:03,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 04:43:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 04:43:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-09-01 04:43:03,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 314 [2023-09-01 04:43:03,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 1804 flow. Second operand has 24 states, 24 states have (on average 143.41666666666666) internal successors, (3442), 24 states have internal predecessors, (3442), 0 states have call successors, (0), 0 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 04:43:03,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:03,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 314 [2023-09-01 04:43:03,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:05,090 INFO L130 PetriNetUnfolder]: 4971/8918 cut-off events. [2023-09-01 04:43:05,091 INFO L131 PetriNetUnfolder]: For 32883/32883 co-relation queries the response was YES. [2023-09-01 04:43:05,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33883 conditions, 8918 events. 4971/8918 cut-off events. For 32883/32883 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 48384 event pairs, 537 based on Foata normal form. 114/9032 useless extension candidates. Maximal degree in co-relation 33650. Up to 1862 conditions per place. [2023-09-01 04:43:05,153 INFO L137 encePairwiseOnDemand]: 306/314 looper letters, 293 selfloop transitions, 154 changer transitions 0/448 dead transitions. [2023-09-01 04:43:05,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 448 transitions, 4536 flow [2023-09-01 04:43:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-09-01 04:43:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-09-01 04:43:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4744 transitions. [2023-09-01 04:43:05,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721337579617834 [2023-09-01 04:43:05,161 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4744 transitions. [2023-09-01 04:43:05,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4744 transitions. [2023-09-01 04:43:05,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:05,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4744 transitions. [2023-09-01 04:43:05,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 148.25) internal successors, (4744), 32 states have internal predecessors, (4744), 0 states have call successors, (0), 0 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 04:43:05,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 314.0) internal successors, (10362), 33 states have internal predecessors, (10362), 0 states have call successors, (0), 0 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 04:43:05,180 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 314.0) internal successors, (10362), 33 states have internal predecessors, (10362), 0 states have call successors, (0), 0 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 04:43:05,180 INFO L175 Difference]: Start difference. First operand has 125 places, 137 transitions, 1804 flow. Second operand 32 states and 4744 transitions. [2023-09-01 04:43:05,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 448 transitions, 4536 flow [2023-09-01 04:43:05,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 448 transitions, 4472 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-09-01 04:43:05,292 INFO L231 Difference]: Finished difference. Result has 159 places, 193 transitions, 2910 flow [2023-09-01 04:43:05,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2910, PETRI_PLACES=159, PETRI_TRANSITIONS=193} [2023-09-01 04:43:05,292 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2023-09-01 04:43:05,293 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 193 transitions, 2910 flow [2023-09-01 04:43:05,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 143.41666666666666) internal successors, (3442), 24 states have internal predecessors, (3442), 0 states have call successors, (0), 0 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 04:43:05,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:43:05,294 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:05,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 04:43:05,500 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,SelfDestructingSolverStorable16 [2023-09-01 04:43:05,500 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-09-01 04:43:05,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:43:05,501 INFO L85 PathProgramCache]: Analyzing trace with hash -953431303, now seen corresponding path program 3 times [2023-09-01 04:43:05,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:43:05,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965287424] [2023-09-01 04:43:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:43:05,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:43:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:43:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:05,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:43:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965287424] [2023-09-01 04:43:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965287424] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 04:43:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041850626] [2023-09-01 04:43:05,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:43:05,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:05,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:43:05,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 04:43:05,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 04:43:06,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-09-01 04:43:06,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:43:06,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:43:06,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:43:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:06,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:43:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 04:43:06,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041850626] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:43:06,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 04:43:06,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-09-01 04:43:06,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551029795] [2023-09-01 04:43:06,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 04:43:06,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-09-01 04:43:06,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:43:06,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-09-01 04:43:06,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2023-09-01 04:43:06,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 314 [2023-09-01 04:43:06,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 193 transitions, 2910 flow. Second operand has 28 states, 28 states have (on average 143.64285714285714) internal successors, (4022), 28 states have internal predecessors, (4022), 0 states have call successors, (0), 0 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 04:43:06,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:43:06,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 314 [2023-09-01 04:43:06,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:43:08,122 INFO L130 PetriNetUnfolder]: 4943/8888 cut-off events. [2023-09-01 04:43:08,122 INFO L131 PetriNetUnfolder]: For 30171/30171 co-relation queries the response was YES. [2023-09-01 04:43:08,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35043 conditions, 8888 events. 4943/8888 cut-off events. For 30171/30171 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 48327 event pairs, 795 based on Foata normal form. 38/8926 useless extension candidates. Maximal degree in co-relation 34804. Up to 3203 conditions per place. [2023-09-01 04:43:08,162 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 0 selfloop transitions, 0 changer transitions 334/334 dead transitions. [2023-09-01 04:43:08,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 334 transitions, 4110 flow [2023-09-01 04:43:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 04:43:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 04:43:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2950 transitions. [2023-09-01 04:43:08,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697452229299363 [2023-09-01 04:43:08,167 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2950 transitions. [2023-09-01 04:43:08,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2950 transitions. [2023-09-01 04:43:08,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:43:08,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2950 transitions. [2023-09-01 04:43:08,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 147.5) internal successors, (2950), 20 states have internal predecessors, (2950), 0 states have call successors, (0), 0 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 04:43:08,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 314.0) internal successors, (6594), 21 states have internal predecessors, (6594), 0 states have call successors, (0), 0 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 04:43:08,181 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 314.0) internal successors, (6594), 21 states have internal predecessors, (6594), 0 states have call successors, (0), 0 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 04:43:08,181 INFO L175 Difference]: Start difference. First operand has 159 places, 193 transitions, 2910 flow. Second operand 20 states and 2950 transitions. [2023-09-01 04:43:08,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 334 transitions, 4110 flow [2023-09-01 04:43:08,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 334 transitions, 3744 flow, removed 31 selfloop flow, removed 24 redundant places. [2023-09-01 04:43:08,297 INFO L231 Difference]: Finished difference. Result has 153 places, 0 transitions, 0 flow [2023-09-01 04:43:08,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=153, PETRI_TRANSITIONS=0} [2023-09-01 04:43:08,298 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2023-09-01 04:43:08,298 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 0 transitions, 0 flow [2023-09-01 04:43:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 143.64285714285714) internal successors, (4022), 28 states have internal predecessors, (4022), 0 states have call successors, (0), 0 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 04:43:08,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-09-01 04:43:08,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-09-01 04:43:08,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 04:43:08,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 04:43:08,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 04:43:08,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 04:43:08,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 04:43:08,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 04:43:08,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-09-01 04:43:08,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-09-01 04:43:08,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 04:43:08,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 04:43:08,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 04:43:08,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 04:43:08,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 04:43:08,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 04:43:08,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 04:43:08,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 04:43:08,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 04:43:08,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 04:43:08,512 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:43:08,518 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 04:43:08,518 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 04:43:08,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 04:43:08 BasicIcfg [2023-09-01 04:43:08,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 04:43:08,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 04:43:08,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 04:43:08,523 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 04:43:08,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:42:43" (3/4) ... [2023-09-01 04:43:08,525 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 04:43:08,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-09-01 04:43:08,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-09-01 04:43:08,538 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-09-01 04:43:08,538 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 04:43:08,539 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 04:43:08,539 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 04:43:08,573 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 04:43:08,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 04:43:08,575 INFO L158 Benchmark]: Toolchain (without parser) took 25850.59ms. Allocated memory was 79.7MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 55.1MB in the beginning and 742.7MB in the end (delta: -687.6MB). Peak memory consumption was 339.6MB. Max. memory is 16.1GB. [2023-09-01 04:43:08,575 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:43:08,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.72ms. Allocated memory is still 79.7MB. Free memory was 55.1MB in the beginning and 43.9MB in the end (delta: 11.3MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2023-09-01 04:43:08,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.37ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 40.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:43:08,576 INFO L158 Benchmark]: Boogie Preprocessor took 29.19ms. Allocated memory is still 79.7MB. Free memory was 40.8MB in the beginning and 39.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:43:08,576 INFO L158 Benchmark]: RCFGBuilder took 600.88ms. Allocated memory is still 79.7MB. Free memory was 39.3MB in the beginning and 49.9MB in the end (delta: -10.7MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2023-09-01 04:43:08,577 INFO L158 Benchmark]: TraceAbstraction took 24533.16ms. Allocated memory was 79.7MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 49.3MB in the beginning and 746.2MB in the end (delta: -697.0MB). Peak memory consumption was 805.4MB. Max. memory is 16.1GB. [2023-09-01 04:43:08,578 INFO L158 Benchmark]: Witness Printer took 51.73ms. Allocated memory is still 1.1GB. Free memory was 746.2MB in the beginning and 742.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 04:43:08,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.72ms. Allocated memory is still 79.7MB. Free memory was 55.1MB in the beginning and 43.9MB in the end (delta: 11.3MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.37ms. Allocated memory is still 79.7MB. Free memory was 43.5MB in the beginning and 40.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.19ms. Allocated memory is still 79.7MB. Free memory was 40.8MB in the beginning and 39.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 600.88ms. Allocated memory is still 79.7MB. Free memory was 39.3MB in the beginning and 49.9MB in the end (delta: -10.7MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * TraceAbstraction took 24533.16ms. Allocated memory was 79.7MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 49.3MB in the beginning and 746.2MB in the end (delta: -697.0MB). Peak memory consumption was 805.4MB. Max. memory is 16.1GB. * Witness Printer took 51.73ms. Allocated memory is still 1.1GB. Free memory was 746.2MB in the beginning and 742.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 155 PlacesBefore, 42 PlacesAfterwards, 158 TransitionsBefore, 40 TransitionsAfterwards, 8200 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 92 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 5 ChoiceCompositions, 145 TotalNumberOfCompositions, 11973 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9149, independent: 8913, independent conditional: 0, independent unconditional: 8913, dependent: 236, dependent conditional: 0, dependent unconditional: 236, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4749, independent: 4698, independent conditional: 0, independent unconditional: 4698, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9149, independent: 4215, independent conditional: 0, independent unconditional: 4215, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 4749, unknown conditional: 0, unknown unconditional: 4749] , Statistics on independence cache: Total cache size (in pairs): 284, Positive cache size: 263, Positive conditional cache size: 0, Positive unconditional cache size: 263, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: 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, 268 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: 24.3s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3124 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2827 mSDsluCounter, 1340 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1295 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5748 IncrementalHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 45 mSDtfsCounter, 5748 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 650 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2910occurred in iteration=17, InterpolantAutomatonStates: 168, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 711 NumberOfCodeBlocks, 711 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 922 ConstructedInterpolants, 0 QuantifiedInterpolants, 2610 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2341 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 131/994 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 04:43:08,613 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