./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:20:41,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:20:41,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:20:41,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:20:41,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:20:41,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:20:41,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:20:41,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:20:41,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:20:41,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:20:41,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:20:41,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:20:41,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:20:41,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:20:41,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:20:41,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:20:41,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:20:41,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:20:41,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:20:41,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:20:41,127 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:20:41,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:20:41,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:20:41,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:20:41,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:20:41,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:20:41,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:20:41,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:20:41,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:20:41,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:20:41,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:20:41,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:20:41,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:20:41,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:20:41,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:20:41,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:20:41,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:20:41,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:20:41,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:20:41,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:20:41,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:20:41,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:20:41,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:20:41,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:20:41,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:20:41,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:20:41,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:20:41,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:20:41,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:20:41,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:20:41,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:20:41,179 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:20:41,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:20:41,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:20:41,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:20:41,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:20:41,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:20:41,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:20:41,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:20:41,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:20:41,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:20:41,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:20:41,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:20:41,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:20:41,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:20:41,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:20:41,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:20:41,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:20:41,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:20:41,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:20:41,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:20:41,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:20:41,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:20:41,183 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:20:41,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:20:41,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:20:41,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-07-21 09:20:41,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:20:41,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:20:41,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:20:41,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:20:41,465 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:20:41,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-07-21 09:20:41,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd18c242/a562a3cfd7ac4ac7957355b4f2c36c89/FLAG990c4dc4e [2022-07-21 09:20:41,985 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:20:41,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-07-21 09:20:42,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd18c242/a562a3cfd7ac4ac7957355b4f2c36c89/FLAG990c4dc4e [2022-07-21 09:20:42,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd18c242/a562a3cfd7ac4ac7957355b4f2c36c89 [2022-07-21 09:20:42,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:20:42,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:20:42,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:20:42,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:20:42,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:20:42,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9caacc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42, skipping insertion in model container [2022-07-21 09:20:42,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:20:42,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:20:42,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-07-21 09:20:42,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:20:42,437 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:20:42,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-07-21 09:20:42,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:20:42,541 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:20:42,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42 WrapperNode [2022-07-21 09:20:42,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:20:42,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:20:42,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:20:42,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:20:42,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,597 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-07-21 09:20:42,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:20:42,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:20:42,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:20:42,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:20:42,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:20:42,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:20:42,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:20:42,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:20:42,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (1/1) ... [2022-07-21 09:20:42,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:20:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:42,670 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) [2022-07-21 09:20:42,679 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 [2022-07-21 09:20:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:20:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:20:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:20:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:20:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:20:42,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:20:42,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:20:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:20:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:20:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 09:20:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:20:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:20:42,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:20:42,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:20:42,712 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:20:42,805 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:20:42,806 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:20:42,980 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:20:42,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:20:42,986 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 09:20:42,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:20:42 BoogieIcfgContainer [2022-07-21 09:20:42,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:20:42,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:20:42,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:20:42,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:20:42,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:20:42" (1/3) ... [2022-07-21 09:20:42,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b09417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:20:42, skipping insertion in model container [2022-07-21 09:20:42,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:20:42" (2/3) ... [2022-07-21 09:20:42,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b09417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:20:42, skipping insertion in model container [2022-07-21 09:20:42,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:20:42" (3/3) ... [2022-07-21 09:20:42,993 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-07-21 09:20:42,997 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:20:43,003 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:20:43,003 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:20:43,004 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:20:43,075 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 09:20:43,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2022-07-21 09:20:43,170 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2022-07-21 09:20:43,172 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:20:43,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2022-07-21 09:20:43,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2022-07-21 09:20:43,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2022-07-21 09:20:43,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:20:43,208 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f4fbee6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7660f0d8 [2022-07-21 09:20:43,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 09:20:43,262 INFO L129 PetriNetUnfolder]: 8/120 cut-off events. [2022-07-21 09:20:43,263 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:20:43,263 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:43,264 INFO L200 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-21 09:20:43,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash 350379197, now seen corresponding path program 1 times [2022-07-21 09:20:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:43,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618514789] [2022-07-21 09:20:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:43,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:43,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618514789] [2022-07-21 09:20:43,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618514789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:20:43,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:20:43,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:20:43,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980638153] [2022-07-21 09:20:43,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:20:43,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:20:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:20:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:20:43,540 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 135 [2022-07-21 09:20:43,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:43,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 135 [2022-07-21 09:20:43,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:43,582 INFO L129 PetriNetUnfolder]: 4/117 cut-off events. [2022-07-21 09:20:43,584 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-21 09:20:43,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 117 events. 4/117 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 84. Up to 5 conditions per place. [2022-07-21 09:20:43,586 INFO L132 encePairwiseOnDemand]: 131/135 looper letters, 4 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2022-07-21 09:20:43,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 254 flow [2022-07-21 09:20:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:20:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 09:20:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2022-07-21 09:20:43,600 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2022-07-21 09:20:43,600 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2022-07-21 09:20:43,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2022-07-21 09:20:43,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:43,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2022-07-21 09:20:43,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,613 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,615 INFO L186 Difference]: Start difference. First operand has 120 places, 121 transitions, 254 flow. Second operand 2 states and 258 transitions. [2022-07-21 09:20:43,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 254 flow [2022-07-21 09:20:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 09:20:43,623 INFO L242 Difference]: Finished difference. Result has 117 places, 117 transitions, 238 flow [2022-07-21 09:20:43,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2022-07-21 09:20:43,629 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2022-07-21 09:20:43,629 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 238 flow [2022-07-21 09:20:43,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,630 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:43,630 INFO L200 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-21 09:20:43,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:20:43,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -494092674, now seen corresponding path program 1 times [2022-07-21 09:20:43,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:43,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467966441] [2022-07-21 09:20:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:43,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:43,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467966441] [2022-07-21 09:20:43,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467966441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:20:43,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:20:43,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:20:43,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652865875] [2022-07-21 09:20:43,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:20:43,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:20:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:43,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:20:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:20:43,794 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2022-07-21 09:20:43,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:43,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2022-07-21 09:20:43,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:43,844 INFO L129 PetriNetUnfolder]: 18/200 cut-off events. [2022-07-21 09:20:43,844 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:20:43,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 551 event pairs, 3 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 240. Up to 22 conditions per place. [2022-07-21 09:20:43,845 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 12 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2022-07-21 09:20:43,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 275 flow [2022-07-21 09:20:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:20:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:20:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-07-21 09:20:43,847 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2022-07-21 09:20:43,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-07-21 09:20:43,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-07-21 09:20:43,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:43,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-07-21 09:20:43,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,850 INFO L186 Difference]: Start difference. First operand has 117 places, 117 transitions, 238 flow. Second operand 3 states and 372 transitions. [2022-07-21 09:20:43,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 275 flow [2022-07-21 09:20:43,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:20:43,853 INFO L242 Difference]: Finished difference. Result has 120 places, 118 transitions, 250 flow [2022-07-21 09:20:43,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2022-07-21 09:20:43,853 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2022-07-21 09:20:43,854 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 250 flow [2022-07-21 09:20:43,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:43,854 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:43,854 INFO L200 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:20:43,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:20:43,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash -963664370, now seen corresponding path program 1 times [2022-07-21 09:20:43,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:43,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12211371] [2022-07-21 09:20:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12211371] [2022-07-21 09:20:43,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12211371] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:43,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715325972] [2022-07-21 09:20:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:43,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:43,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:43,934 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) [2022-07-21 09:20:43,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:20:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:44,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 09:20:44,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:20:44,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:20:44,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715325972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:20:44,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:20:44,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-07-21 09:20:44,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536830930] [2022-07-21 09:20:44,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:20:44,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:20:44,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:20:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:20:44,081 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 135 [2022-07-21 09:20:44,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:44,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 135 [2022-07-21 09:20:44,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:44,117 INFO L129 PetriNetUnfolder]: 20/195 cut-off events. [2022-07-21 09:20:44,117 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-07-21 09:20:44,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 195 events. 20/195 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 7 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 241. Up to 28 conditions per place. [2022-07-21 09:20:44,119 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 15 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2022-07-21 09:20:44,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 295 flow [2022-07-21 09:20:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:20:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:20:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-07-21 09:20:44,121 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2022-07-21 09:20:44,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2022-07-21 09:20:44,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2022-07-21 09:20:44,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:44,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2022-07-21 09:20:44,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,124 INFO L186 Difference]: Start difference. First operand has 120 places, 118 transitions, 250 flow. Second operand 3 states and 369 transitions. [2022-07-21 09:20:44,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 295 flow [2022-07-21 09:20:44,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:20:44,126 INFO L242 Difference]: Finished difference. Result has 122 places, 119 transitions, 260 flow [2022-07-21 09:20:44,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2022-07-21 09:20:44,127 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2022-07-21 09:20:44,128 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 260 flow [2022-07-21 09:20:44,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,128 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:44,128 INFO L200 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, 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, 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, 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, 1] [2022-07-21 09:20:44,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:20:44,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:44,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash -786293827, now seen corresponding path program 1 times [2022-07-21 09:20:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:44,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737235121] [2022-07-21 09:20:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:20:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:44,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737235121] [2022-07-21 09:20:44,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737235121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:44,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950526256] [2022-07-21 09:20:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:44,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:44,449 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) [2022-07-21 09:20:44,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:20:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 09:20:44,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:20:44,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:20:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:20:44,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950526256] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:20:44,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:20:44,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-21 09:20:44,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315131281] [2022-07-21 09:20:44,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:20:44,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:20:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:20:44,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:20:44,748 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2022-07-21 09:20:44,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:44,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2022-07-21 09:20:44,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:44,841 INFO L129 PetriNetUnfolder]: 26/229 cut-off events. [2022-07-21 09:20:44,841 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:20:44,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 229 events. 26/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 541 event pairs, 4 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 312. Up to 17 conditions per place. [2022-07-21 09:20:44,845 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 18 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2022-07-21 09:20:44,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 353 flow [2022-07-21 09:20:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:20:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:20:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1091 transitions. [2022-07-21 09:20:44,848 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8979423868312757 [2022-07-21 09:20:44,848 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1091 transitions. [2022-07-21 09:20:44,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1091 transitions. [2022-07-21 09:20:44,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:44,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1091 transitions. [2022-07-21 09:20:44,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.22222222222223) internal successors, (1091), 9 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,853 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,853 INFO L186 Difference]: Start difference. First operand has 122 places, 119 transitions, 260 flow. Second operand 9 states and 1091 transitions. [2022-07-21 09:20:44,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 353 flow [2022-07-21 09:20:44,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:20:44,857 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 308 flow [2022-07-21 09:20:44,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2022-07-21 09:20:44,859 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2022-07-21 09:20:44,859 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 308 flow [2022-07-21 09:20:44,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:44,860 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:44,861 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:20:44,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:20:45,077 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,SelfDestructingSolverStorable3 [2022-07-21 09:20:45,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash 211684319, now seen corresponding path program 2 times [2022-07-21 09:20:45,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:45,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449499621] [2022-07-21 09:20:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:45,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:20:45,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:45,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449499621] [2022-07-21 09:20:45,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449499621] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:45,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557917096] [2022-07-21 09:20:45,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:20:45,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:45,192 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) [2022-07-21 09:20:45,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:20:45,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:20:45,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:20:45,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 09:20:45,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:20:45,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:20:45,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557917096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:20:45,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:20:45,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-07-21 09:20:45,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734613115] [2022-07-21 09:20:45,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:20:45,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:20:45,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:20:45,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:20:45,356 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2022-07-21 09:20:45,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:45,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:45,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2022-07-21 09:20:45,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:45,495 INFO L129 PetriNetUnfolder]: 307/1229 cut-off events. [2022-07-21 09:20:45,495 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-07-21 09:20:45,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 1229 events. 307/1229 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7033 event pairs, 41 based on Foata normal form. 0/1117 useless extension candidates. Maximal degree in co-relation 1942. Up to 186 conditions per place. [2022-07-21 09:20:45,501 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 32 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2022-07-21 09:20:45,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 484 flow [2022-07-21 09:20:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:20:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:20:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2022-07-21 09:20:45,503 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9005291005291005 [2022-07-21 09:20:45,503 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2022-07-21 09:20:45,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2022-07-21 09:20:45,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:45,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2022-07-21 09:20:45,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:45,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:45,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:45,506 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 308 flow. Second operand 7 states and 851 transitions. [2022-07-21 09:20:45,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 484 flow [2022-07-21 09:20:45,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 478 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-21 09:20:45,510 INFO L242 Difference]: Finished difference. Result has 143 places, 143 transitions, 442 flow [2022-07-21 09:20:45,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2022-07-21 09:20:45,511 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2022-07-21 09:20:45,511 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 442 flow [2022-07-21 09:20:45,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:45,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:45,512 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:20:45,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 09:20:45,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:45,728 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:45,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:45,729 INFO L85 PathProgramCache]: Analyzing trace with hash -319465841, now seen corresponding path program 3 times [2022-07-21 09:20:45,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:45,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064604084] [2022-07-21 09:20:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:45,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:20:45,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:45,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064604084] [2022-07-21 09:20:45,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064604084] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239478467] [2022-07-21 09:20:45,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:20:45,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:45,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:45,807 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) [2022-07-21 09:20:45,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:20:45,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-21 09:20:45,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:20:45,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 09:20:45,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:20:46,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:20:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:20:46,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239478467] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:20:46,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:20:46,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-21 09:20:46,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386022683] [2022-07-21 09:20:46,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:20:46,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:20:46,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:46,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:20:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:20:46,103 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2022-07-21 09:20:46,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:46,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2022-07-21 09:20:46,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:46,281 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([366] thread1EXIT-->L915-2: Formula: (and (= 0 v_thread1Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem16#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork1_thidvar0_4)) InVars {ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} AuxVars[] AssignedVars[][151], [26#L897true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), 119#L915-2true, 1954#(< thread2Thread1of1ForFork0_~j~0 4), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), 135#true, 1117#(<= 1 ~num~0), 439#true]) [2022-07-21 09:20:46,281 INFO L384 tUnfolder$Statistics]: this new event has 144 ancestors and is cut-off event [2022-07-21 09:20:46,281 INFO L387 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-07-21 09:20:46,282 INFO L387 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-07-21 09:20:46,282 INFO L387 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-07-21 09:20:46,294 INFO L129 PetriNetUnfolder]: 327/1513 cut-off events. [2022-07-21 09:20:46,294 INFO L130 PetriNetUnfolder]: For 797/886 co-relation queries the response was YES. [2022-07-21 09:20:46,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 1513 events. 327/1513 cut-off events. For 797/886 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10159 event pairs, 31 based on Foata normal form. 54/1519 useless extension candidates. Maximal degree in co-relation 3122. Up to 173 conditions per place. [2022-07-21 09:20:46,304 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 22 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2022-07-21 09:20:46,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 160 transitions, 547 flow [2022-07-21 09:20:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:20:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:20:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1077 transitions. [2022-07-21 09:20:46,306 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8864197530864197 [2022-07-21 09:20:46,325 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1077 transitions. [2022-07-21 09:20:46,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1077 transitions. [2022-07-21 09:20:46,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:46,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1077 transitions. [2022-07-21 09:20:46,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,329 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,329 INFO L186 Difference]: Start difference. First operand has 143 places, 143 transitions, 442 flow. Second operand 9 states and 1077 transitions. [2022-07-21 09:20:46,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 160 transitions, 547 flow [2022-07-21 09:20:46,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 160 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:20:46,334 INFO L242 Difference]: Finished difference. Result has 154 places, 149 transitions, 492 flow [2022-07-21 09:20:46,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=492, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-07-21 09:20:46,335 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 34 predicate places. [2022-07-21 09:20:46,335 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 492 flow [2022-07-21 09:20:46,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,336 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:46,336 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-21 09:20:46,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:20:46,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:46,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1404666689, now seen corresponding path program 4 times [2022-07-21 09:20:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:46,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90261265] [2022-07-21 09:20:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:46,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-21 09:20:46,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:46,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90261265] [2022-07-21 09:20:46,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90261265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:20:46,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:20:46,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:20:46,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021453134] [2022-07-21 09:20:46,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:20:46,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:20:46,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:46,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:20:46,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:20:46,593 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2022-07-21 09:20:46,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:46,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2022-07-21 09:20:46,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:46,702 INFO L129 PetriNetUnfolder]: 125/887 cut-off events. [2022-07-21 09:20:46,702 INFO L130 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-07-21 09:20:46,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 887 events. 125/887 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4614 event pairs, 14 based on Foata normal form. 92/979 useless extension candidates. Maximal degree in co-relation 1759. Up to 127 conditions per place. [2022-07-21 09:20:46,706 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 16 selfloop transitions, 8 changer transitions 0/141 dead transitions. [2022-07-21 09:20:46,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 141 transitions, 488 flow [2022-07-21 09:20:46,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:20:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:20:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-07-21 09:20:46,708 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-07-21 09:20:46,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-07-21 09:20:46,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-07-21 09:20:46,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:46,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-07-21 09:20:46,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,710 INFO L186 Difference]: Start difference. First operand has 154 places, 149 transitions, 492 flow. Second operand 3 states and 349 transitions. [2022-07-21 09:20:46,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 141 transitions, 488 flow [2022-07-21 09:20:46,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 141 transitions, 468 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-07-21 09:20:46,714 INFO L242 Difference]: Finished difference. Result has 152 places, 139 transitions, 430 flow [2022-07-21 09:20:46,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-07-21 09:20:46,715 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2022-07-21 09:20:46,715 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 430 flow [2022-07-21 09:20:46,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:46,715 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:46,715 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-21 09:20:46,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:20:46,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:46,716 INFO L85 PathProgramCache]: Analyzing trace with hash -475481099, now seen corresponding path program 5 times [2022-07-21 09:20:46,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:46,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793286344] [2022-07-21 09:20:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 09:20:46,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:46,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793286344] [2022-07-21 09:20:46,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793286344] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:46,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226256587] [2022-07-21 09:20:46,786 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 09:20:46,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:46,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:46,787 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) [2022-07-21 09:20:46,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:20:46,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-21 09:20:46,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:20:46,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:20:46,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 09:20:46,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:20:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 09:20:46,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226256587] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:20:46,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:20:46,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-07-21 09:20:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855409953] [2022-07-21 09:20:46,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:20:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:20:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:20:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:20:46,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2022-07-21 09:20:47,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 430 flow. Second operand has 11 states, 11 states have (on average 118.54545454545455) internal successors, (1304), 11 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:47,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2022-07-21 09:20:47,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:47,175 INFO L129 PetriNetUnfolder]: 178/1187 cut-off events. [2022-07-21 09:20:47,175 INFO L130 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-07-21 09:20:47,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1187 events. 178/1187 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6912 event pairs, 14 based on Foata normal form. 6/1182 useless extension candidates. Maximal degree in co-relation 2365. Up to 156 conditions per place. [2022-07-21 09:20:47,181 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 27 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2022-07-21 09:20:47,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 572 flow [2022-07-21 09:20:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:20:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 09:20:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1432 transitions. [2022-07-21 09:20:47,184 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8839506172839506 [2022-07-21 09:20:47,184 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1432 transitions. [2022-07-21 09:20:47,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1432 transitions. [2022-07-21 09:20:47,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:47,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1432 transitions. [2022-07-21 09:20:47,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.33333333333333) internal successors, (1432), 12 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,190 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,190 INFO L186 Difference]: Start difference. First operand has 152 places, 139 transitions, 430 flow. Second operand 12 states and 1432 transitions. [2022-07-21 09:20:47,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 572 flow [2022-07-21 09:20:47,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 158 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 09:20:47,194 INFO L242 Difference]: Finished difference. Result has 166 places, 143 transitions, 484 flow [2022-07-21 09:20:47,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=484, PETRI_PLACES=166, PETRI_TRANSITIONS=143} [2022-07-21 09:20:47,194 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 46 predicate places. [2022-07-21 09:20:47,195 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 143 transitions, 484 flow [2022-07-21 09:20:47,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.54545454545455) internal successors, (1304), 11 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,195 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:47,196 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-21 09:20:47,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:20:47,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:47,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:47,409 INFO L85 PathProgramCache]: Analyzing trace with hash -522735746, now seen corresponding path program 6 times [2022-07-21 09:20:47,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:47,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095149310] [2022-07-21 09:20:47,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-21 09:20:47,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:47,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095149310] [2022-07-21 09:20:47,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095149310] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:47,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267778150] [2022-07-21 09:20:47,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 09:20:47,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:47,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:47,478 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) [2022-07-21 09:20:47,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:20:47,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-21 09:20:47,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:20:47,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:20:47,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 09:20:47,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:20:47,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267778150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:20:47,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:20:47,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2022-07-21 09:20:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869209453] [2022-07-21 09:20:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:20:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:20:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:20:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:20:47,729 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2022-07-21 09:20:47,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 143 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:47,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2022-07-21 09:20:47,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:47,893 INFO L129 PetriNetUnfolder]: 164/1206 cut-off events. [2022-07-21 09:20:47,893 INFO L130 PetriNetUnfolder]: For 611/611 co-relation queries the response was YES. [2022-07-21 09:20:47,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 1206 events. 164/1206 cut-off events. For 611/611 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6924 event pairs, 13 based on Foata normal form. 18/1220 useless extension candidates. Maximal degree in co-relation 2590. Up to 161 conditions per place. [2022-07-21 09:20:47,914 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 18 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2022-07-21 09:20:47,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 581 flow [2022-07-21 09:20:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:20:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 09:20:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 931 transitions. [2022-07-21 09:20:47,918 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.862037037037037 [2022-07-21 09:20:47,918 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 931 transitions. [2022-07-21 09:20:47,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 931 transitions. [2022-07-21 09:20:47,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:47,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 931 transitions. [2022-07-21 09:20:47,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,922 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,923 INFO L186 Difference]: Start difference. First operand has 166 places, 143 transitions, 484 flow. Second operand 8 states and 931 transitions. [2022-07-21 09:20:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 581 flow [2022-07-21 09:20:47,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 152 transitions, 565 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-21 09:20:47,927 INFO L242 Difference]: Finished difference. Result has 169 places, 145 transitions, 531 flow [2022-07-21 09:20:47,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=169, PETRI_TRANSITIONS=145} [2022-07-21 09:20:47,928 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 49 predicate places. [2022-07-21 09:20:47,928 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 145 transitions, 531 flow [2022-07-21 09:20:47,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:47,929 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:47,929 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1] [2022-07-21 09:20:47,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:20:48,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:48,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:48,147 INFO L85 PathProgramCache]: Analyzing trace with hash 731212494, now seen corresponding path program 7 times [2022-07-21 09:20:48,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:48,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136518126] [2022-07-21 09:20:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 09:20:48,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:48,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136518126] [2022-07-21 09:20:48,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136518126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:48,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131505550] [2022-07-21 09:20:48,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-21 09:20:48,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:48,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:48,259 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) [2022-07-21 09:20:48,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:20:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:48,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:20:48,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 09:20:48,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:20:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 09:20:48,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131505550] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:20:48,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:20:48,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-07-21 09:20:48,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850129250] [2022-07-21 09:20:48,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:20:48,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:20:48,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:48,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:20:48,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:20:48,556 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2022-07-21 09:20:48,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 145 transitions, 531 flow. Second operand has 11 states, 11 states have (on average 120.18181818181819) internal successors, (1322), 11 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:48,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:48,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2022-07-21 09:20:48,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:48,737 INFO L129 PetriNetUnfolder]: 165/1290 cut-off events. [2022-07-21 09:20:48,751 INFO L130 PetriNetUnfolder]: For 807/812 co-relation queries the response was YES. [2022-07-21 09:20:48,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1290 events. 165/1290 cut-off events. For 807/812 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7244 event pairs, 8 based on Foata normal form. 6/1294 useless extension candidates. Maximal degree in co-relation 2919. Up to 133 conditions per place. [2022-07-21 09:20:48,758 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 16 selfloop transitions, 12 changer transitions 0/155 dead transitions. [2022-07-21 09:20:48,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 155 transitions, 627 flow [2022-07-21 09:20:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:20:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 09:20:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1445 transitions. [2022-07-21 09:20:48,761 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8919753086419753 [2022-07-21 09:20:48,761 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1445 transitions. [2022-07-21 09:20:48,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1445 transitions. [2022-07-21 09:20:48,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:48,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1445 transitions. [2022-07-21 09:20:48,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.41666666666667) internal successors, (1445), 12 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:48,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:48,781 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:48,781 INFO L186 Difference]: Start difference. First operand has 169 places, 145 transitions, 531 flow. Second operand 12 states and 1445 transitions. [2022-07-21 09:20:48,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 155 transitions, 627 flow [2022-07-21 09:20:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 155 transitions, 603 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-07-21 09:20:48,787 INFO L242 Difference]: Finished difference. Result has 178 places, 149 transitions, 569 flow [2022-07-21 09:20:48,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=569, PETRI_PLACES=178, PETRI_TRANSITIONS=149} [2022-07-21 09:20:48,787 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 58 predicate places. [2022-07-21 09:20:48,787 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 149 transitions, 569 flow [2022-07-21 09:20:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.18181818181819) internal successors, (1322), 11 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:48,788 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:20:48,788 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:20:48,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:20:49,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:49,008 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:20:49,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:20:49,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1431588976, now seen corresponding path program 8 times [2022-07-21 09:20:49,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:20:49,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987707721] [2022-07-21 09:20:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:20:49,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:20:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:20:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:20:49,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987707721] [2022-07-21 09:20:49,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987707721] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:20:49,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163233005] [2022-07-21 09:20:49,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:20:49,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:20:49,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:20:49,396 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) [2022-07-21 09:20:49,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:20:49,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:20:49,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:20:49,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:20:49,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:20:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 5 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:50,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:20:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:20:50,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163233005] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:20:50,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:20:50,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 43 [2022-07-21 09:20:50,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742288855] [2022-07-21 09:20:50,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:20:50,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-21 09:20:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:20:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-21 09:20:50,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1677, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 09:20:50,861 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 135 [2022-07-21 09:20:50,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 149 transitions, 569 flow. Second operand has 43 states, 43 states have (on average 113.93023255813954) internal successors, (4899), 43 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:50,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:20:50,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 135 [2022-07-21 09:20:50,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:20:51,540 INFO L129 PetriNetUnfolder]: 162/1287 cut-off events. [2022-07-21 09:20:51,541 INFO L130 PetriNetUnfolder]: For 879/879 co-relation queries the response was YES. [2022-07-21 09:20:51,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 1287 events. 162/1287 cut-off events. For 879/879 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7370 event pairs, 7 based on Foata normal form. 13/1297 useless extension candidates. Maximal degree in co-relation 2800. Up to 130 conditions per place. [2022-07-21 09:20:51,548 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2022-07-21 09:20:51,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 159 transitions, 669 flow [2022-07-21 09:20:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:20:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 09:20:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2280 transitions. [2022-07-21 09:20:51,553 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-21 09:20:51,553 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2280 transitions. [2022-07-21 09:20:51,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2280 transitions. [2022-07-21 09:20:51,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:20:51,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2280 transitions. [2022-07-21 09:20:51,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:51,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:51,563 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:51,563 INFO L186 Difference]: Start difference. First operand has 178 places, 149 transitions, 569 flow. Second operand 20 states and 2280 transitions. [2022-07-21 09:20:51,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 159 transitions, 669 flow [2022-07-21 09:20:51,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 159 transitions, 651 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-07-21 09:20:51,574 INFO L242 Difference]: Finished difference. Result has 188 places, 0 transitions, 0 flow [2022-07-21 09:20:51,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=188, PETRI_TRANSITIONS=0} [2022-07-21 09:20:51,576 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 68 predicate places. [2022-07-21 09:20:51,576 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 0 transitions, 0 flow [2022-07-21 09:20:51,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 113.93023255813954) internal successors, (4899), 43 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 09:20:51,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-21 09:20:51,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-21 09:20:51,581 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-21 09:20:51,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 09:20:51,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:20:51,799 INFO L356 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-07-21 09:20:51,802 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 09:20:51,802 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 09:20:51,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 09:20:51 BasicIcfg [2022-07-21 09:20:51,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 09:20:51,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 09:20:51,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 09:20:51,809 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 09:20:51,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:20:42" (3/4) ... [2022-07-21 09:20:51,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 09:20:51,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-21 09:20:51,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-21 09:20:51,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-21 09:20:51,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 09:20:51,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 09:20:51,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 09:20:51,842 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 09:20:51,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 09:20:51,843 INFO L158 Benchmark]: Toolchain (without parser) took 9821.37ms. Allocated memory was 65.0MB in the beginning and 218.1MB in the end (delta: 153.1MB). Free memory was 48.0MB in the beginning and 140.6MB in the end (delta: -92.6MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2022-07-21 09:20:51,843 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:20:51,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.41ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 46.2MB in the end (delta: 1.4MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2022-07-21 09:20:51,844 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.57ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 43.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 09:20:51,844 INFO L158 Benchmark]: Boogie Preprocessor took 45.13ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 09:20:51,845 INFO L158 Benchmark]: RCFGBuilder took 344.08ms. Allocated memory is still 65.0MB. Free memory was 42.0MB in the beginning and 44.1MB in the end (delta: -2.1MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-07-21 09:20:51,845 INFO L158 Benchmark]: TraceAbstraction took 8819.61ms. Allocated memory was 65.0MB in the beginning and 218.1MB in the end (delta: 153.1MB). Free memory was 43.8MB in the beginning and 143.5MB in the end (delta: -99.7MB). Peak memory consumption was 150.6MB. Max. memory is 16.1GB. [2022-07-21 09:20:51,845 INFO L158 Benchmark]: Witness Printer took 33.71ms. Allocated memory is still 218.1MB. Free memory was 143.5MB in the beginning and 140.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 09:20:51,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.41ms. Allocated memory is still 65.0MB. Free memory was 47.6MB in the beginning and 46.2MB in the end (delta: 1.4MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.57ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 43.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.13ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 344.08ms. Allocated memory is still 65.0MB. Free memory was 42.0MB in the beginning and 44.1MB in the end (delta: -2.1MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8819.61ms. Allocated memory was 65.0MB in the beginning and 218.1MB in the end (delta: 153.1MB). Free memory was 43.8MB in the beginning and 143.5MB in the end (delta: -99.7MB). Peak memory consumption was 150.6MB. Max. memory is 16.1GB. * Witness Printer took 33.71ms. Allocated memory is still 218.1MB. Free memory was 143.5MB in the beginning and 140.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 171 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 434 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1142 IncrementalHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 58 mSDtfsCounter, 1142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1973 GetRequests, 1842 SyntacticMatches, 5 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=10, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2597 NumberOfCodeBlocks, 2497 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3313 ConstructedInterpolants, 0 QuantifiedInterpolants, 8682 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2681 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 707/1491 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-21 09:20:51,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE