./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_ok_longer.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/queue_ok_longer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --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 08:48:37,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:48:37,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:48:37,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:48:37,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:48:37,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:48:37,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:48:37,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:48:37,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:48:37,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:48:37,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:48:37,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:48:37,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:48:37,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:48:37,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:48:37,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:48:37,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:48:37,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:48:37,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:48:37,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:48:37,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:48:37,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:48:37,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:48:37,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:48:37,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:48:37,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:48:37,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:48:37,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:48:37,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:48:37,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:48:37,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:48:37,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:48:37,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:48:37,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:48:37,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:48:37,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:48:37,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:48:37,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:48:37,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:48:37,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:48:37,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:48:37,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 08:48:37,768 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:48:37,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:48:37,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:48:37,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:48:37,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:48:37,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:48:37,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:48:37,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:48:37,771 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:48:37,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:48:37,772 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:48:37,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:48:37,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:48:37,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:48:37,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:48:37,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:48:37,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:48:37,774 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:48:37,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:48:37,775 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:48:37,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:48:37,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:48:37,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:48:37,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:48:37,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:37,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:48:37,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:48:37,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:48:37,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:48:37,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:48:37,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:48:37,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:48:37,781 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:48:37,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:48:37,782 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:48:37,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:48:38,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:48:38,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:48:38,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:48:38,108 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:48:38,109 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:48:38,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-09-01 08:48:39,327 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:48:39,591 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:48:39,592 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-09-01 08:48:39,617 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c3fe6c9/5d1fc94814294bcf8816d4af5076153e/FLAGcf1dd5b87 [2023-09-01 08:48:39,640 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29c3fe6c9/5d1fc94814294bcf8816d4af5076153e [2023-09-01 08:48:39,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:48:39,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:48:39,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:39,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:48:39,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:48:39,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:39" (1/1) ... [2023-09-01 08:48:39,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c1dc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:39, skipping insertion in model container [2023-09-01 08:48:39,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:39" (1/1) ... [2023-09-01 08:48:39,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:48:39,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:48:40,025 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/queue_ok_longer.i[43272,43285] [2023-09-01 08:48:40,031 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/queue_ok_longer.i[43545,43558] [2023-09-01 08:48:40,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:40,043 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:48:40,087 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/queue_ok_longer.i[43272,43285] [2023-09-01 08:48:40,090 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/queue_ok_longer.i[43545,43558] [2023-09-01 08:48:40,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:40,166 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:48:40,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40 WrapperNode [2023-09-01 08:48:40,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:40,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:40,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:48:40,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:48:40,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,243 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2023-09-01 08:48:40,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:40,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:48:40,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:48:40,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:48:40,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:48:40,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:48:40,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:48:40,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:48:40,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (1/1) ... [2023-09-01 08:48:40,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:40,344 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 08:48:40,353 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 08:48:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-01 08:48:40,379 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-01 08:48:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-01 08:48:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-01 08:48:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:48:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:48:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:48:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:48:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 08:48:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:48:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:48:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:48:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:48:40,382 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 08:48:40,568 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:48:40,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:48:40,865 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:48:40,874 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:48:40,877 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 08:48:40,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:40 BoogieIcfgContainer [2023-09-01 08:48:40,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:48:40,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:48:40,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:48:40,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:48:40,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:48:39" (1/3) ... [2023-09-01 08:48:40,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa61e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:40, skipping insertion in model container [2023-09-01 08:48:40,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:40" (2/3) ... [2023-09-01 08:48:40,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa61e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:40, skipping insertion in model container [2023-09-01 08:48:40,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:40" (3/3) ... [2023-09-01 08:48:40,888 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-09-01 08:48:40,895 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:48:40,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:48:40,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 08:48:40,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:48:41,042 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:48:41,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 216 transitions, 448 flow [2023-09-01 08:48:41,194 INFO L130 PetriNetUnfolder]: 13/214 cut-off events. [2023-09-01 08:48:41,194 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:41,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 13/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 359 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-09-01 08:48:41,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 216 transitions, 448 flow [2023-09-01 08:48:41,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 205 transitions, 419 flow [2023-09-01 08:48:41,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:48:41,234 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 205 transitions, 419 flow [2023-09-01 08:48:41,238 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 205 transitions, 419 flow [2023-09-01 08:48:41,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 419 flow [2023-09-01 08:48:41,298 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-09-01 08:48:41,298 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:48:41,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 13/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-09-01 08:48:41,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 9984 [2023-09-01 08:48:48,121 INFO L134 LiptonReduction]: Checked pairs total: 19772 [2023-09-01 08:48:48,122 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-09-01 08:48:48,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:48:48,137 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;@3ef97c96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:48:48,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 08:48:48,138 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 08:48:48,139 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:48:48,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:48,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 08:48:48,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:48,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash 839, now seen corresponding path program 1 times [2023-09-01 08:48:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:48,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682766303] [2023-09-01 08:48:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:48,280 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 08:48:48,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682766303] [2023-09-01 08:48:48,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682766303] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:48,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:48,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 08:48:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424310853] [2023-09-01 08:48:48,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:48,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 08:48:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:48,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 08:48:48,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 08:48:48,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 402 [2023-09-01 08:48:48,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 08:48:48,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:48,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 402 [2023-09-01 08:48:48,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:48,552 INFO L130 PetriNetUnfolder]: 829/1341 cut-off events. [2023-09-01 08:48:48,553 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 08:48:48,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1341 events. 829/1341 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5736 event pairs, 621 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2519. Up to 1297 conditions per place. [2023-09-01 08:48:48,561 INFO L137 encePairwiseOnDemand]: 401/402 looper letters, 38 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-09-01 08:48:48,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 179 flow [2023-09-01 08:48:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 08:48:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 08:48:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-09-01 08:48:48,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2023-09-01 08:48:48,585 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-09-01 08:48:48,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-09-01 08:48:48,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:48,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-09-01 08:48:48,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 08:48:48,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 08:48:48,602 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 08:48:48,603 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 103 flow. Second operand 2 states and 450 transitions. [2023-09-01 08:48:48,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 179 flow [2023-09-01 08:48:48,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:48:48,609 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 94 flow [2023-09-01 08:48:48,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-09-01 08:48:48,614 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-09-01 08:48:48,615 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 94 flow [2023-09-01 08:48:48,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 08:48:48,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:48,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:48,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:48:48,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:48,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1319934340, now seen corresponding path program 1 times [2023-09-01 08:48:48,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:48,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874338763] [2023-09-01 08:48:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:48,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:48,989 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 08:48:48,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:48,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874338763] [2023-09-01 08:48:48,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874338763] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:48,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:48,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:48:48,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673339837] [2023-09-01 08:48:48,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:48,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:48,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:48,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:49,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 402 [2023-09-01 08:48:49,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 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 08:48:49,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:49,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 402 [2023-09-01 08:48:49,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:49,085 INFO L130 PetriNetUnfolder]: 197/403 cut-off events. [2023-09-01 08:48:49,085 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 08:48:49,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 403 events. 197/403 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1584 event pairs, 125 based on Foata normal form. 28/391 useless extension candidates. Maximal degree in co-relation 808. Up to 193 conditions per place. [2023-09-01 08:48:49,088 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 40 selfloop transitions, 2 changer transitions 5/52 dead transitions. [2023-09-01 08:48:49,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 203 flow [2023-09-01 08:48:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-09-01 08:48:49,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364842454394693 [2023-09-01 08:48:49,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-09-01 08:48:49,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-09-01 08:48:49,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:49,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-09-01 08:48:49,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 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 08:48:49,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 08:48:49,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 08:48:49,097 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 94 flow. Second operand 3 states and 647 transitions. [2023-09-01 08:48:49,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 203 flow [2023-09-01 08:48:49,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 203 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:48:49,099 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 98 flow [2023-09-01 08:48:49,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-09-01 08:48:49,100 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-09-01 08:48:49,100 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 98 flow [2023-09-01 08:48:49,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 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 08:48:49,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:49,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:49,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:48:49,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:49,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -312369892, now seen corresponding path program 1 times [2023-09-01 08:48:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275439218] [2023-09-01 08:48:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:49,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:49,173 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 08:48:49,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:49,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275439218] [2023-09-01 08:48:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275439218] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:49,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:49,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:48:49,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836049328] [2023-09-01 08:48:49,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:49,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:49,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:49,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 402 [2023-09-01 08:48:49,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 08:48:49,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:49,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 402 [2023-09-01 08:48:49,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:49,288 INFO L130 PetriNetUnfolder]: 245/498 cut-off events. [2023-09-01 08:48:49,288 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 08:48:49,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 498 events. 245/498 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1823 event pairs, 155 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 1028. Up to 357 conditions per place. [2023-09-01 08:48:49,291 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 48 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-09-01 08:48:49,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 230 flow [2023-09-01 08:48:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-09-01 08:48:49,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543117744610282 [2023-09-01 08:48:49,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-09-01 08:48:49,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-09-01 08:48:49,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:49,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-09-01 08:48:49,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 08:48:49,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 08:48:49,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 08:48:49,299 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 98 flow. Second operand 3 states and 655 transitions. [2023-09-01 08:48:49,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 230 flow [2023-09-01 08:48:49,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:48:49,301 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 113 flow [2023-09-01 08:48:49,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-09-01 08:48:49,302 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-09-01 08:48:49,302 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 113 flow [2023-09-01 08:48:49,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 08:48:49,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:49,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:49,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:48:49,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:49,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash -824947493, now seen corresponding path program 1 times [2023-09-01 08:48:49,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:49,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232354179] [2023-09-01 08:48:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:49,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:49,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:49,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232354179] [2023-09-01 08:48:49,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232354179] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:49,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:49,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:48:49,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467856353] [2023-09-01 08:48:49,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:49,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:49,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:49,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 402 [2023-09-01 08:48:49,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 08:48:49,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:49,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 402 [2023-09-01 08:48:49,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:49,574 INFO L130 PetriNetUnfolder]: 230/513 cut-off events. [2023-09-01 08:48:49,574 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-09-01 08:48:49,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 513 events. 230/513 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2000 event pairs, 29 based on Foata normal form. 42/525 useless extension candidates. Maximal degree in co-relation 1099. Up to 407 conditions per place. [2023-09-01 08:48:49,577 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 43 selfloop transitions, 3 changer transitions 1/51 dead transitions. [2023-09-01 08:48:49,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 222 flow [2023-09-01 08:48:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-09-01 08:48:49,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339966832504146 [2023-09-01 08:48:49,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-09-01 08:48:49,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-09-01 08:48:49,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:49,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-09-01 08:48:49,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:48:49,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 08:48:49,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 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 08:48:49,585 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 113 flow. Second operand 3 states and 644 transitions. [2023-09-01 08:48:49,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 222 flow [2023-09-01 08:48:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:48:49,587 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 114 flow [2023-09-01 08:48:49,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-09-01 08:48:49,588 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2023-09-01 08:48:49,588 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 114 flow [2023-09-01 08:48:49,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 08:48:49,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:49,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:49,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:48:49,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:49,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash 818194887, now seen corresponding path program 1 times [2023-09-01 08:48:49,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:49,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760972] [2023-09-01 08:48:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:49,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:49,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760972] [2023-09-01 08:48:49,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760972] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:48:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855871237] [2023-09-01 08:48:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:49,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:49,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:49,681 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 08:48:49,697 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 08:48:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:49,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 08:48:49,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:48:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:49,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:48:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:49,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855871237] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:48:49,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:48:49,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-09-01 08:48:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864730730] [2023-09-01 08:48:49,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:48:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:48:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:48:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:48:49,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 402 [2023-09-01 08:48:49,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 205.57142857142858) internal successors, (1439), 7 states have internal predecessors, (1439), 0 states have call successors, (0), 0 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 08:48:49,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:49,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 402 [2023-09-01 08:48:49,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:50,052 INFO L130 PetriNetUnfolder]: 246/536 cut-off events. [2023-09-01 08:48:50,053 INFO L131 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2023-09-01 08:48:50,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 536 events. 246/536 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1552 event pairs, 100 based on Foata normal form. 12/512 useless extension candidates. Maximal degree in co-relation 1199. Up to 238 conditions per place. [2023-09-01 08:48:50,056 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 70 selfloop transitions, 10 changer transitions 1/85 dead transitions. [2023-09-01 08:48:50,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 85 transitions, 372 flow [2023-09-01 08:48:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:48:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:48:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1283 transitions. [2023-09-01 08:48:50,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319237147595357 [2023-09-01 08:48:50,060 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1283 transitions. [2023-09-01 08:48:50,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1283 transitions. [2023-09-01 08:48:50,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:50,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1283 transitions. [2023-09-01 08:48:50,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 0 states have call successors, (0), 0 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 08:48:50,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 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 08:48:50,068 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 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 08:48:50,069 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 114 flow. Second operand 6 states and 1283 transitions. [2023-09-01 08:48:50,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 85 transitions, 372 flow [2023-09-01 08:48:50,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 85 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:48:50,071 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 172 flow [2023-09-01 08:48:50,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-09-01 08:48:50,072 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2023-09-01 08:48:50,072 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 172 flow [2023-09-01 08:48:50,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 205.57142857142858) internal successors, (1439), 7 states have internal predecessors, (1439), 0 states have call successors, (0), 0 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 08:48:50,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:50,074 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:50,083 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 08:48:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:50,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:50,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1030938622, now seen corresponding path program 2 times [2023-09-01 08:48:50,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936237243] [2023-09-01 08:48:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:50,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:50,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:50,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936237243] [2023-09-01 08:48:50,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936237243] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:48:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086072759] [2023-09-01 08:48:50,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:48:50,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:50,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:50,475 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 08:48:50,478 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 08:48:50,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:48:50,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:48:50,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:48:50,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:48:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:50,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:48:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:50,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086072759] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:48:50,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:48:50,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-09-01 08:48:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173662601] [2023-09-01 08:48:50,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:48:50,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:48:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:48:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:48:50,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 402 [2023-09-01 08:48:50,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 172 flow. Second operand has 13 states, 13 states have (on average 205.84615384615384) internal successors, (2676), 13 states have internal predecessors, (2676), 0 states have call successors, (0), 0 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 08:48:50,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:50,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 402 [2023-09-01 08:48:50,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:51,185 INFO L130 PetriNetUnfolder]: 423/937 cut-off events. [2023-09-01 08:48:51,186 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2023-09-01 08:48:51,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 937 events. 423/937 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2594 event pairs, 91 based on Foata normal form. 24/903 useless extension candidates. Maximal degree in co-relation 2360. Up to 217 conditions per place. [2023-09-01 08:48:51,191 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 136 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2023-09-01 08:48:51,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 162 transitions, 838 flow [2023-09-01 08:48:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:48:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:48:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2564 transitions. [2023-09-01 08:48:51,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315091210613598 [2023-09-01 08:48:51,198 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2564 transitions. [2023-09-01 08:48:51,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2564 transitions. [2023-09-01 08:48:51,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:51,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2564 transitions. [2023-09-01 08:48:51,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 213.66666666666666) internal successors, (2564), 12 states have internal predecessors, (2564), 0 states have call successors, (0), 0 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 08:48:51,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 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 08:48:51,215 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 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 08:48:51,216 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 172 flow. Second operand 12 states and 2564 transitions. [2023-09-01 08:48:51,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 162 transitions, 838 flow [2023-09-01 08:48:51,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 799 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-09-01 08:48:51,221 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 322 flow [2023-09-01 08:48:51,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=322, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-09-01 08:48:51,222 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2023-09-01 08:48:51,223 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 322 flow [2023-09-01 08:48:51,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 205.84615384615384) internal successors, (2676), 13 states have internal predecessors, (2676), 0 states have call successors, (0), 0 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 08:48:51,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:51,224 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:51,237 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 08:48:51,431 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,SelfDestructingSolverStorable5 [2023-09-01 08:48:51,432 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:51,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:51,432 INFO L85 PathProgramCache]: Analyzing trace with hash -122187422, now seen corresponding path program 3 times [2023-09-01 08:48:51,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:51,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424840046] [2023-09-01 08:48:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:51,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424840046] [2023-09-01 08:48:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424840046] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:48:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185198853] [2023-09-01 08:48:51,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:48:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:51,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:51,833 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 08:48:51,836 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 08:48:52,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-09-01 08:48:52,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:48:52,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 41 conjunts are in the unsatisfiable core [2023-09-01 08:48:52,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:48:52,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-09-01 08:48:52,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:52,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:48:52,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:48:52,844 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-09-01 08:48:52,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-09-01 08:48:52,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:52,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-09-01 08:48:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-09-01 08:48:52,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:48:53,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:48:53,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 42 [2023-09-01 08:48:53,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:48:53,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 77 [2023-09-01 08:48:53,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-09-01 08:48:53,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-09-01 08:48:53,092 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:48:53,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2023-09-01 08:48:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-09-01 08:48:53,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185198853] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:48:53,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:48:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2023-09-01 08:48:53,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450730479] [2023-09-01 08:48:53,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:48:53,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 08:48:53,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 08:48:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=475, Unknown=6, NotChecked=0, Total=600 [2023-09-01 08:48:56,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:48:56,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 402 [2023-09-01 08:48:56,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 322 flow. Second operand has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 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 08:48:56,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:56,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 402 [2023-09-01 08:48:56,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:58,747 INFO L130 PetriNetUnfolder]: 821/1809 cut-off events. [2023-09-01 08:48:58,747 INFO L131 PetriNetUnfolder]: For 1316/1316 co-relation queries the response was YES. [2023-09-01 08:48:58,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4870 conditions, 1809 events. 821/1809 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6526 event pairs, 57 based on Foata normal form. 8/1746 useless extension candidates. Maximal degree in co-relation 4853. Up to 285 conditions per place. [2023-09-01 08:48:58,759 INFO L137 encePairwiseOnDemand]: 390/402 looper letters, 267 selfloop transitions, 110 changer transitions 1/381 dead transitions. [2023-09-01 08:48:58,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 381 transitions, 2042 flow [2023-09-01 08:48:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-09-01 08:48:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-09-01 08:48:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6885 transitions. [2023-09-01 08:48:58,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982992016660882 [2023-09-01 08:48:58,779 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6885 transitions. [2023-09-01 08:48:58,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6885 transitions. [2023-09-01 08:48:58,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:58,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6885 transitions. [2023-09-01 08:48:58,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 160.11627906976744) internal successors, (6885), 43 states have internal predecessors, (6885), 0 states have call successors, (0), 0 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 08:48:58,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 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 08:48:58,849 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 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 08:48:58,849 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 322 flow. Second operand 43 states and 6885 transitions. [2023-09-01 08:48:58,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 381 transitions, 2042 flow [2023-09-01 08:48:58,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 381 transitions, 2027 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:48:58,864 INFO L231 Difference]: Finished difference. Result has 135 places, 164 transitions, 1174 flow [2023-09-01 08:48:58,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1174, PETRI_PLACES=135, PETRI_TRANSITIONS=164} [2023-09-01 08:48:58,865 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2023-09-01 08:48:58,865 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 164 transitions, 1174 flow [2023-09-01 08:48:58,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 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 08:48:58,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:58,867 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:58,879 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 08:48:59,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:59,075 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:48:59,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash -161773555, now seen corresponding path program 1 times [2023-09-01 08:48:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363598073] [2023-09-01 08:48:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:59,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:59,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:59,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363598073] [2023-09-01 08:48:59,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363598073] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:48:59,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132498172] [2023-09-01 08:48:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:59,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:59,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:59,544 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 08:48:59,547 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 08:48:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:59,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 08:48:59,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:48:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:59,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:49:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132498172] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:49:00,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:49:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-09-01 08:49:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344853825] [2023-09-01 08:49:00,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:49:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 08:49:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 08:49:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-09-01 08:49:00,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 402 [2023-09-01 08:49:00,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 164 transitions, 1174 flow. Second operand has 27 states, 27 states have (on average 206.25925925925927) internal successors, (5569), 27 states have internal predecessors, (5569), 0 states have call successors, (0), 0 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 08:49:00,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:00,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 402 [2023-09-01 08:49:00,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:01,478 INFO L130 PetriNetUnfolder]: 1371/3215 cut-off events. [2023-09-01 08:49:01,478 INFO L131 PetriNetUnfolder]: For 28289/28289 co-relation queries the response was YES. [2023-09-01 08:49:01,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14009 conditions, 3215 events. 1371/3215 cut-off events. For 28289/28289 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 11621 event pairs, 136 based on Foata normal form. 104/3295 useless extension candidates. Maximal degree in co-relation 13966. Up to 452 conditions per place. [2023-09-01 08:49:01,535 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 413 selfloop transitions, 75 changer transitions 0/492 dead transitions. [2023-09-01 08:49:01,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 492 transitions, 5505 flow [2023-09-01 08:49:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-09-01 08:49:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-09-01 08:49:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5553 transitions. [2023-09-01 08:49:01,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312858783008036 [2023-09-01 08:49:01,550 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5553 transitions. [2023-09-01 08:49:01,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5553 transitions. [2023-09-01 08:49:01,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:01,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5553 transitions. [2023-09-01 08:49:01,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 213.57692307692307) internal successors, (5553), 26 states have internal predecessors, (5553), 0 states have call successors, (0), 0 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 08:49:01,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 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 08:49:01,584 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 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 08:49:01,584 INFO L175 Difference]: Start difference. First operand has 135 places, 164 transitions, 1174 flow. Second operand 26 states and 5553 transitions. [2023-09-01 08:49:01,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 492 transitions, 5505 flow [2023-09-01 08:49:01,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 492 transitions, 5318 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-09-01 08:49:01,649 INFO L231 Difference]: Finished difference. Result has 163 places, 202 transitions, 1744 flow [2023-09-01 08:49:01,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1744, PETRI_PLACES=163, PETRI_TRANSITIONS=202} [2023-09-01 08:49:01,652 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 116 predicate places. [2023-09-01 08:49:01,652 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 202 transitions, 1744 flow [2023-09-01 08:49:01,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 206.25925925925927) internal successors, (5569), 27 states have internal predecessors, (5569), 0 states have call successors, (0), 0 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 08:49:01,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:01,654 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:01,664 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 08:49:01,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:49:01,864 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:49:01,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:01,865 INFO L85 PathProgramCache]: Analyzing trace with hash -346057744, now seen corresponding path program 2 times [2023-09-01 08:49:01,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:01,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349558598] [2023-09-01 08:49:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:01,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:03,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:03,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349558598] [2023-09-01 08:49:03,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349558598] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:49:03,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531518513] [2023-09-01 08:49:03,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:49:03,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:49:03,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:49:03,116 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 08:49:03,117 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 08:49:03,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:49:03,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:49:03,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 08:49:03,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:49:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:03,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:49:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531518513] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:49:04,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:49:04,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2023-09-01 08:49:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502319416] [2023-09-01 08:49:04,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:49:04,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-09-01 08:49:04,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-09-01 08:49:04,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-09-01 08:49:04,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 402 [2023-09-01 08:49:04,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 202 transitions, 1744 flow. Second operand has 53 states, 53 states have (on average 206.41509433962264) internal successors, (10940), 53 states have internal predecessors, (10940), 0 states have call successors, (0), 0 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 08:49:04,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:04,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 402 [2023-09-01 08:49:04,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:07,950 INFO L130 PetriNetUnfolder]: 2697/6387 cut-off events. [2023-09-01 08:49:07,950 INFO L131 PetriNetUnfolder]: For 100006/100006 co-relation queries the response was YES. [2023-09-01 08:49:07,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29612 conditions, 6387 events. 2697/6387 cut-off events. For 100006/100006 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 23275 event pairs, 136 based on Foata normal form. 208/6571 useless extension candidates. Maximal degree in co-relation 29556. Up to 1128 conditions per place. [2023-09-01 08:49:08,019 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 829 selfloop transitions, 153 changer transitions 0/986 dead transitions. [2023-09-01 08:49:08,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 986 transitions, 11797 flow [2023-09-01 08:49:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-09-01 08:49:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-09-01 08:49:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 11104 transitions. [2023-09-01 08:49:08,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311902028319939 [2023-09-01 08:49:08,034 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 11104 transitions. [2023-09-01 08:49:08,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 11104 transitions. [2023-09-01 08:49:08,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:49:08,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 11104 transitions. [2023-09-01 08:49:08,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 213.53846153846155) internal successors, (11104), 52 states have internal predecessors, (11104), 0 states have call successors, (0), 0 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 08:49:08,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 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 08:49:08,083 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 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 08:49:08,083 INFO L175 Difference]: Start difference. First operand has 163 places, 202 transitions, 1744 flow. Second operand 52 states and 11104 transitions. [2023-09-01 08:49:08,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 986 transitions, 11797 flow [2023-09-01 08:49:08,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 986 transitions, 11734 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-09-01 08:49:08,328 INFO L231 Difference]: Finished difference. Result has 230 places, 282 transitions, 3412 flow [2023-09-01 08:49:08,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3412, PETRI_PLACES=230, PETRI_TRANSITIONS=282} [2023-09-01 08:49:08,330 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 183 predicate places. [2023-09-01 08:49:08,330 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 282 transitions, 3412 flow [2023-09-01 08:49:08,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 206.41509433962264) internal successors, (10940), 53 states have internal predecessors, (10940), 0 states have call successors, (0), 0 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 08:49:08,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:49:08,333 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:49:08,342 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 08:49:08,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:49:08,541 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:49:08,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:49:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash 890330880, now seen corresponding path program 3 times [2023-09-01 08:49:08,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:49:08,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343280578] [2023-09-01 08:49:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:49:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:49:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:49:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 0 proven. 7675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:49:12,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:49:12,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343280578] [2023-09-01 08:49:12,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343280578] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:49:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135097116] [2023-09-01 08:49:12,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:49:12,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:49:12,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:49:12,541 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 08:49:12,569 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 08:49:13,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-09-01 08:49:13,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:49:13,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 70 conjunts are in the unsatisfiable core [2023-09-01 08:49:13,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:49:15,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:49:15,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:49:15,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:49:15,836 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 08:49:15,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-09-01 08:49:15,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-09-01 08:49:16,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-09-01 08:49:16,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:49:16,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:49:16,183 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 08:49:16,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2023-09-01 08:49:16,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-09-01 08:49:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 644 proven. 245 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2023-09-01 08:49:16,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:49:16,418 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1))))) is different from false [2023-09-01 08:49:16,427 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1))))) is different from false [2023-09-01 08:49:16,441 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (store .cse2 .cse3 (+ (select .cse2 .cse3) 1)))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1))))) is different from false [2023-09-01 08:49:16,704 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2167)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse4 (select .cse2 .cse3))) (or (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 400)) (= .cse4 400))))) is different from false [2023-09-01 08:49:17,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:49:17,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 163 [2023-09-01 08:49:17,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:49:17,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 258 [2023-09-01 08:49:17,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 85 [2023-09-01 08:49:17,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-09-01 08:49:17,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-09-01 08:49:17,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:49:17,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 107 [2023-09-01 08:49:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 332 proven. 436 refuted. 0 times theorem prover too weak. 6786 trivial. 121 not checked. [2023-09-01 08:49:17,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135097116] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:49:17,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:49:17,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 11, 14] total 76 [2023-09-01 08:49:17,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176459131] [2023-09-01 08:49:17,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:49:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-09-01 08:49:17,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-09-01 08:49:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1496, Invalid=3615, Unknown=17, NotChecked=572, Total=5700 [2023-09-01 08:49:17,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 402 [2023-09-01 08:49:17,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 282 transitions, 3412 flow. Second operand has 76 states, 76 states have (on average 155.18421052631578) internal successors, (11794), 76 states have internal predecessors, (11794), 0 states have call successors, (0), 0 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 08:49:17,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:17,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 402 [2023-09-01 08:49:17,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:51:04,411 INFO L130 PetriNetUnfolder]: 5887/13506 cut-off events. [2023-09-01 08:51:04,411 INFO L131 PetriNetUnfolder]: For 195853/195853 co-relation queries the response was YES. [2023-09-01 08:51:04,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68109 conditions, 13506 events. 5887/13506 cut-off events. For 195853/195853 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 63654 event pairs, 213 based on Foata normal form. 408/13878 useless extension candidates. Maximal degree in co-relation 68026. Up to 2163 conditions per place. [2023-09-01 08:51:04,545 INFO L137 encePairwiseOnDemand]: 386/402 looper letters, 2010 selfloop transitions, 1717 changer transitions 1/3731 dead transitions. [2023-09-01 08:51:04,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 3731 transitions, 36321 flow [2023-09-01 08:51:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 573 states. [2023-09-01 08:51:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2023-09-01 08:51:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 89210 transitions. [2023-09-01 08:51:04,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38728695093468085 [2023-09-01 08:51:04,644 INFO L72 ComplementDD]: Start complementDD. Operand 573 states and 89210 transitions. [2023-09-01 08:51:04,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 573 states and 89210 transitions. [2023-09-01 08:51:04,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:51:04,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 573 states and 89210 transitions. [2023-09-01 08:51:04,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 574 states, 573 states have (on average 155.68935427574172) internal successors, (89210), 573 states have internal predecessors, (89210), 0 states have call successors, (0), 0 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 08:51:04,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 574 states, 574 states have (on average 402.0) internal successors, (230748), 574 states have internal predecessors, (230748), 0 states have call successors, (0), 0 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 08:51:05,006 INFO L81 ComplementDD]: Finished complementDD. Result has 574 states, 574 states have (on average 402.0) internal successors, (230748), 574 states have internal predecessors, (230748), 0 states have call successors, (0), 0 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 08:51:05,006 INFO L175 Difference]: Start difference. First operand has 230 places, 282 transitions, 3412 flow. Second operand 573 states and 89210 transitions. [2023-09-01 08:51:05,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 3731 transitions, 36321 flow [2023-09-01 08:51:05,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 779 places, 3731 transitions, 36102 flow, removed 0 selfloop flow, removed 23 redundant places. [2023-09-01 08:51:05,519 INFO L231 Difference]: Finished difference. Result has 985 places, 1958 transitions, 30295 flow [2023-09-01 08:51:05,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=573, PETRI_FLOW=30295, PETRI_PLACES=985, PETRI_TRANSITIONS=1958} [2023-09-01 08:51:05,521 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 938 predicate places. [2023-09-01 08:51:05,521 INFO L495 AbstractCegarLoop]: Abstraction has has 985 places, 1958 transitions, 30295 flow [2023-09-01 08:51:05,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 155.18421052631578) internal successors, (11794), 76 states have internal predecessors, (11794), 0 states have call successors, (0), 0 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 08:51:05,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:51:05,524 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 51, 51, 51, 38, 38, 38, 38, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:51:05,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:51:05,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:51:05,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:51:05,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:51:05,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1940408699, now seen corresponding path program 4 times [2023-09-01 08:51:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:51:05,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35529573] [2023-09-01 08:51:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:51:05,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:51:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:51:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:51:09,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:51:09,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35529573] [2023-09-01 08:51:09,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35529573] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:51:09,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832660289] [2023-09-01 08:51:09,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 08:51:09,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:51:09,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:51:09,457 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 08:51:09,459 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 08:53:07,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 08:53:07,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:53:07,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 53 conjunts are in the unsatisfiable core [2023-09-01 08:53:07,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:53:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:53:07,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:53:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:53:11,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832660289] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:53:11,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:53:11,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-09-01 08:53:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318411386] [2023-09-01 08:53:11,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:53:11,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-09-01 08:53:11,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:53:11,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-09-01 08:53:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-09-01 08:53:11,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 402 [2023-09-01 08:53:11,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 985 places, 1958 transitions, 30295 flow. Second operand has 107 states, 107 states have (on average 206.69158878504672) internal successors, (22116), 107 states have internal predecessors, (22116), 0 states have call successors, (0), 0 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 08:53:11,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:53:11,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 402 [2023-09-01 08:53:11,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:53:51,731 INFO L130 PetriNetUnfolder]: 10502/25721 cut-off events. [2023-09-01 08:53:51,732 INFO L131 PetriNetUnfolder]: For 17221667/17221667 co-relation queries the response was YES. [2023-09-01 08:53:52,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669996 conditions, 25721 events. 10502/25721 cut-off events. For 17221667/17221667 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 125534 event pairs, 396 based on Foata normal form. 848/26533 useless extension candidates. Maximal degree in co-relation 669706. Up to 7141 conditions per place. [2023-09-01 08:53:52,809 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 3933 selfloop transitions, 522 changer transitions 0/4459 dead transitions. [2023-09-01 08:53:52,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1090 places, 4459 transitions, 124709 flow [2023-09-01 08:53:52,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-09-01 08:53:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-09-01 08:53:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 22633 transitions. [2023-09-01 08:53:52,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311414624988267 [2023-09-01 08:53:52,832 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 22633 transitions. [2023-09-01 08:53:52,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 22633 transitions. [2023-09-01 08:53:52,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:53:52,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 22633 transitions. [2023-09-01 08:53:52,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 213.5188679245283) internal successors, (22633), 106 states have internal predecessors, (22633), 0 states have call successors, (0), 0 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 08:53:52,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 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 08:53:52,893 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 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 08:53:52,893 INFO L175 Difference]: Start difference. First operand has 985 places, 1958 transitions, 30295 flow. Second operand 106 states and 22633 transitions. [2023-09-01 08:53:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1090 places, 4459 transitions, 124709 flow [2023-09-01 08:54:09,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 987 places, 4459 transitions, 93650 flow, removed 12901 selfloop flow, removed 103 redundant places. [2023-09-01 08:54:09,866 INFO L231 Difference]: Finished difference. Result has 1041 places, 2222 transitions, 20438 flow [2023-09-01 08:54:09,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=14503, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=20438, PETRI_PLACES=1041, PETRI_TRANSITIONS=2222} [2023-09-01 08:54:09,868 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 994 predicate places. [2023-09-01 08:54:09,868 INFO L495 AbstractCegarLoop]: Abstraction has has 1041 places, 2222 transitions, 20438 flow [2023-09-01 08:54:09,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 206.69158878504672) internal successors, (22116), 107 states have internal predecessors, (22116), 0 states have call successors, (0), 0 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 08:54:09,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:54:09,870 INFO L208 CegarLoopForPetriNet]: trace histogram [104, 104, 104, 104, 77, 77, 77, 77, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:54:09,890 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 08:54:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:54:10,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 08:54:10,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:54:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1986383804, now seen corresponding path program 5 times [2023-09-01 08:54:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:54:10,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728358307] [2023-09-01 08:54:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:54:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:54:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:54:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 0 proven. 36364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:54:21,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:54:21,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728358307] [2023-09-01 08:54:21,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728358307] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:54:21,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624600628] [2023-09-01 08:54:21,585 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 08:54:21,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:54:21,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:54:21,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:54:21,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:54:24,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-09-01 08:54:24,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:54:24,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 201 conjunts are in the unsatisfiable core [2023-09-01 08:54:24,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:54:24,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-09-01 08:54:24,310 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-09-01 08:54:24,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 39 [2023-09-01 08:54:24,491 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:24,503 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-09-01 08:54:24,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 47 [2023-09-01 08:54:24,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:24,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2023-09-01 08:54:24,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 33 [2023-09-01 08:54:24,919 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-09-01 08:54:24,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 57 [2023-09-01 08:54:25,157 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:25,168 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-09-01 08:54:25,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 66 [2023-09-01 08:54:25,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:25,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 55 [2023-09-01 08:54:25,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 52 [2023-09-01 08:54:25,708 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-09-01 08:54:25,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2023-09-01 08:54:25,989 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:25,999 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-09-01 08:54:25,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 85 [2023-09-01 08:54:26,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:26,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2023-09-01 08:54:26,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 71 [2023-09-01 08:54:26,762 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-09-01 08:54:26,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 94 [2023-09-01 08:54:27,149 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:27,162 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-09-01 08:54:27,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2023-09-01 08:54:27,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:27,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-09-01 08:54:27,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-09-01 08:54:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:27,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-09-01 08:54:27,728 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:27,735 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-09-01 08:54:27,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-09-01 08:54:27,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:27,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-09-01 08:54:27,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-09-01 08:54:28,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:28,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-09-01 08:54:28,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:28,273 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-09-01 08:54:28,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-09-01 08:54:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:28,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-09-01 08:54:28,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-09-01 08:54:28,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:28,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-09-01 08:54:28,792 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:28,798 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-09-01 08:54:28,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-09-01 08:54:28,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:28,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-09-01 08:54:29,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-09-01 08:54:29,197 INFO L321 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-09-01 08:54:29,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2023-09-01 08:54:29,342 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 08:54:29,348 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-09-01 08:54:29,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-09-01 08:54:29,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:54:29,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-09-01 08:54:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 12020 proven. 133 refuted. 0 times theorem prover too weak. 24211 trivial. 0 not checked. [2023-09-01 08:54:29,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:56:52,169 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4859 Int) (v_ArrVal_4866 Int) (v_ArrVal_4856 Int) (v_ArrVal_4853 Int) (v_ArrVal_4864 Int) (v_ArrVal_4854 Int) (v_ArrVal_4851 Int) (v_ArrVal_4863 Int) (v_ArrVal_4861 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| Int) (|v_t1Thread1of1ForFork0_~i~0#1_395| Int)) (let ((.cse0 (select |c_#memory_int| |c_~#queue~0.base|))) (let ((.cse3 (store .cse0 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| 4) |c_~#queue~0.offset|) v_ArrVal_4851)) (.cse8 (+ 1608 |c_~#queue~0.offset|)) (.cse1 (+ |c_~#queue~0.offset| 1604))) (let ((.cse7 (let ((.cse9 (store |c_#memory_int| |c_~#queue~0.base| (store (store .cse3 .cse8 v_ArrVal_4853) .cse1 v_ArrVal_4854)))) (store .cse9 |c_~#stored_elements~0.base| (store (select .cse9 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4856))))) (let ((.cse2 (select .cse7 |c_~#queue~0.base|))) (let ((.cse4 (store .cse2 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| 4)) v_ArrVal_4859))) (let ((.cse5 (select (let ((.cse6 (store .cse7 |c_~#queue~0.base| (store (store .cse4 .cse8 v_ArrVal_4861) .cse1 v_ArrVal_4863)))) (store .cse6 |c_~#stored_elements~0.base| (store (select .cse6 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_395| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4864))) |c_~#queue~0.base|))) (or (< (select .cse0 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504|) (< (select .cse2 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502|) (< |v_t1Thread1of1ForFork0_~i~0#1_395| (+ |c_t1Thread1of1ForFork0_~i~0#1| 1)) (< (+ (select .cse3 .cse1) 1) v_ArrVal_4854) (< (+ (select .cse4 .cse1) 1) v_ArrVal_4863) (< (select (store .cse5 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| 4) |c_~#queue~0.offset|) v_ArrVal_4866) .cse1) 400) (< (select .cse5 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500|))))))))) is different from false [2023-09-01 09:01:17,233 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4859 Int) (v_ArrVal_4849 Int) (v_ArrVal_4847 Int) (v_ArrVal_4866 Int) (v_ArrVal_4845 Int) (v_ArrVal_4856 Int) (v_ArrVal_4842 Int) (v_ArrVal_4853 Int) (v_ArrVal_4864 Int) (v_ArrVal_4854 Int) (v_ArrVal_4851 Int) (v_ArrVal_4863 Int) (v_ArrVal_4861 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| Int) (|v_t1Thread1of1ForFork0_~i~0#1_396| Int) (|v_t1Thread1of1ForFork0_~i~0#1_395| Int)) (let ((.cse4 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_4842)) (.cse5 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse12 (let ((.cse13 (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse4 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_4845) .cse5 v_ArrVal_4847)))) (store .cse13 |c_~#stored_elements~0.base| (store (select .cse13 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4849))))) (let ((.cse0 (select .cse12 |c_~#queue~0.base|))) (let ((.cse7 (store .cse0 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| 4) |c_~#queue~0.offset|) v_ArrVal_4851)) (.cse10 (+ 1608 |c_~#queue~0.offset|)) (.cse1 (+ |c_~#queue~0.offset| 1604))) (let ((.cse9 (let ((.cse11 (store .cse12 |c_~#queue~0.base| (store (store .cse7 .cse10 v_ArrVal_4853) .cse1 v_ArrVal_4854)))) (store .cse11 |c_~#stored_elements~0.base| (store (select .cse11 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_396| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4856))))) (let ((.cse2 (select .cse9 |c_~#queue~0.base|))) (let ((.cse3 (store .cse2 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| 4)) v_ArrVal_4859))) (let ((.cse6 (select (let ((.cse8 (store .cse9 |c_~#queue~0.base| (store (store .cse3 .cse10 v_ArrVal_4861) .cse1 v_ArrVal_4863)))) (store .cse8 |c_~#stored_elements~0.base| (store (select .cse8 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_395| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4864))) |c_~#queue~0.base|))) (or (< (select .cse0 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504|) (< (select .cse2 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502|) (< (+ (select .cse3 .cse1) 1) v_ArrVal_4863) (< (+ (select .cse4 .cse5) 1) v_ArrVal_4847) (< (select (store .cse6 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| 4) |c_~#queue~0.offset|) v_ArrVal_4866) .cse1) 400) (< |v_t1Thread1of1ForFork0_~i~0#1_396| (+ |c_t1Thread1of1ForFork0_~i~0#1| 1)) (< |v_t1Thread1of1ForFork0_~i~0#1_395| (+ |v_t1Thread1of1ForFork0_~i~0#1_396| 1)) (< (select .cse6 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500|) (< (+ (select .cse7 .cse1) 1) v_ArrVal_4854))))))))))) is different from false Killed by 15