/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 22:27:51,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 22:27:51,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 22:27:52,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 22:27:52,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 22:27:52,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 22:27:52,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 22:27:52,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 22:27:52,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 22:27:52,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 22:27:52,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 22:27:52,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 22:27:52,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 22:27:52,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 22:27:52,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 22:27:52,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 22:27:52,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 22:27:52,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 22:27:52,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 22:27:52,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 22:27:52,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 22:27:52,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 22:27:52,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 22:27:52,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 22:27:52,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 22:27:52,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 22:27:52,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 22:27:52,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 22:27:52,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 22:27:52,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 22:27:52,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 22:27:52,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 22:27:52,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 22:27:52,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 22:27:52,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 22:27:52,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 22:27:52,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 22:27:52,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 22:27:52,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 22:27:52,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 22:27:52,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 22:27:52,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 22:27:52,085 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 22:27:52,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 22:27:52,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 22:27:52,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 22:27:52,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 22:27:52,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 22:27:52,087 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 22:27:52,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 22:27:52,087 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 22:27:52,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 22:27:52,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 22:27:52,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 22:27:52,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 22:27:52,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 22:27:52,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 22:27:52,088 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 22:27:52,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:27:52,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 22:27:52,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 22:27:52,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 22:27:52,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 22:27:52,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 22:27:52,090 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 22:27:52,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 22:27:52,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 22:27:52,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 22:27:52,288 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 22:27:52,289 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 22:27:52,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-01-27 22:27:53,312 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 22:27:53,474 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 22:27:53,475 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-01-27 22:27:53,479 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6dc21fb9/27e26f87da074a779fd9f216e7362043/FLAG890cac34e [2023-01-27 22:27:53,495 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6dc21fb9/27e26f87da074a779fd9f216e7362043 [2023-01-27 22:27:53,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 22:27:53,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 22:27:53,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 22:27:53,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 22:27:53,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 22:27:53,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26aaf8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53, skipping insertion in model container [2023-01-27 22:27:53,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 22:27:53,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 22:27:53,664 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-01-27 22:27:53,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:27:53,685 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 22:27:53,714 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-01-27 22:27:53,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 22:27:53,727 INFO L208 MainTranslator]: Completed translation [2023-01-27 22:27:53,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53 WrapperNode [2023-01-27 22:27:53,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 22:27:53,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 22:27:53,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 22:27:53,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 22:27:53,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,754 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 200 [2023-01-27 22:27:53,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 22:27:53,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 22:27:53,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 22:27:53,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 22:27:53,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 22:27:53,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 22:27:53,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 22:27:53,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 22:27:53,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (1/1) ... [2023-01-27 22:27:53,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 22:27:53,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:27:53,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 22:27:53,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 22:27:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 22:27:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 22:27:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 22:27:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 22:27:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 22:27:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 22:27:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 22:27:53,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 22:27:53,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 22:27:53,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 22:27:53,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 22:27:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 22:27:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 22:27:53,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 22:27:53,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 22:27:53,837 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 22:27:53,902 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 22:27:53,903 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 22:27:54,233 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 22:27:54,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 22:27:54,239 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-27 22:27:54,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:27:54 BoogieIcfgContainer [2023-01-27 22:27:54,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 22:27:54,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 22:27:54,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 22:27:54,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 22:27:54,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 10:27:53" (1/3) ... [2023-01-27 22:27:54,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f38c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:27:54, skipping insertion in model container [2023-01-27 22:27:54,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:27:53" (2/3) ... [2023-01-27 22:27:54,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f38c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:27:54, skipping insertion in model container [2023-01-27 22:27:54,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:27:54" (3/3) ... [2023-01-27 22:27:54,246 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-01-27 22:27:54,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 22:27:54,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 22:27:54,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 22:27:54,309 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 22:27:54,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 272 transitions, 568 flow [2023-01-27 22:27:54,435 INFO L130 PetriNetUnfolder]: 25/269 cut-off events. [2023-01-27 22:27:54,436 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:27:54,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 25/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-01-27 22:27:54,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 272 transitions, 568 flow [2023-01-27 22:27:54,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 536 flow [2023-01-27 22:27:54,449 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 22:27:54,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 536 flow [2023-01-27 22:27:54,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 536 flow [2023-01-27 22:27:54,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 536 flow [2023-01-27 22:27:54,519 INFO L130 PetriNetUnfolder]: 25/259 cut-off events. [2023-01-27 22:27:54,519 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:27:54,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 259 events. 25/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 184 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-01-27 22:27:54,523 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-01-27 22:27:59,998 INFO L134 LiptonReduction]: Checked pairs total: 4237 [2023-01-27 22:27:59,999 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-01-27 22:28:00,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 22:28:00,037 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d4f798c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 22:28:00,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 22:28:00,053 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2023-01-27 22:28:00,054 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 22:28:00,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:00,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:00,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:00,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:00,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1534120368, now seen corresponding path program 1 times [2023-01-27 22:28:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754673228] [2023-01-27 22:28:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:00,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 22:28:00,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:00,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754673228] [2023-01-27 22:28:00,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754673228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:28:00,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:28:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 22:28:00,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545694579] [2023-01-27 22:28:00,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:28:00,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 22:28:00,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 22:28:00,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 22:28:00,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 539 [2023-01-27 22:28:00,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:00,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:00,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 539 [2023-01-27 22:28:00,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:00,689 INFO L130 PetriNetUnfolder]: 1632/2322 cut-off events. [2023-01-27 22:28:00,689 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-27 22:28:00,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2322 events. 1632/2322 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10376 event pairs, 885 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 1294. Up to 755 conditions per place. [2023-01-27 22:28:00,698 INFO L137 encePairwiseOnDemand]: 529/539 looper letters, 26 selfloop transitions, 8 changer transitions 56/96 dead transitions. [2023-01-27 22:28:00,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 426 flow [2023-01-27 22:28:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:28:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:28:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-01-27 22:28:00,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38849721706864565 [2023-01-27 22:28:00,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-01-27 22:28:00,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-01-27 22:28:00,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:00,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-01-27 22:28:00,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:00,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:00,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:00,732 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1047 transitions. [2023-01-27 22:28:00,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 426 flow [2023-01-27 22:28:00,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 22:28:00,741 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2023-01-27 22:28:00,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-01-27 22:28:00,745 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-01-27 22:28:00,745 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2023-01-27 22:28:00,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:00,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:00,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:00,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 22:28:00,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:00,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -432182153, now seen corresponding path program 1 times [2023-01-27 22:28:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:00,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085813306] [2023-01-27 22:28:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:00,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085813306] [2023-01-27 22:28:00,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085813306] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665597138] [2023-01-27 22:28:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:00,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:00,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:00,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:00,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 22:28:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:01,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 22:28:01,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:01,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665597138] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:01,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:28:01,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-27 22:28:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481035388] [2023-01-27 22:28:01,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:28:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 22:28:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 22:28:01,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-27 22:28:01,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 539 [2023-01-27 22:28:01,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:01,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 539 [2023-01-27 22:28:01,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:01,250 INFO L130 PetriNetUnfolder]: 757/1100 cut-off events. [2023-01-27 22:28:01,251 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-27 22:28:01,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1100 events. 757/1100 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4295 event pairs, 239 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 2201. Up to 543 conditions per place. [2023-01-27 22:28:01,255 INFO L137 encePairwiseOnDemand]: 533/539 looper letters, 43 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2023-01-27 22:28:01,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 252 flow [2023-01-27 22:28:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 22:28:01,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 22:28:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 971 transitions. [2023-01-27 22:28:01,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602968460111317 [2023-01-27 22:28:01,257 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 971 transitions. [2023-01-27 22:28:01,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 971 transitions. [2023-01-27 22:28:01,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:01,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 971 transitions. [2023-01-27 22:28:01,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,263 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 971 transitions. [2023-01-27 22:28:01,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 252 flow [2023-01-27 22:28:01,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 234 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:01,265 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2023-01-27 22:28:01,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-01-27 22:28:01,266 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-01-27 22:28:01,266 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2023-01-27 22:28:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:01,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:01,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:01,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:01,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:01,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash 260537364, now seen corresponding path program 1 times [2023-01-27 22:28:01,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325813460] [2023-01-27 22:28:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325813460] [2023-01-27 22:28:01,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325813460] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074070226] [2023-01-27 22:28:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:01,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:01,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:01,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 22:28:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:01,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 22:28:01,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:01,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074070226] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:01,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 22:28:01,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-27 22:28:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143998168] [2023-01-27 22:28:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:28:01,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 22:28:01,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:01,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 22:28:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-01-27 22:28:01,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 539 [2023-01-27 22:28:01,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:01,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:01,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 539 [2023-01-27 22:28:01,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:02,116 INFO L130 PetriNetUnfolder]: 1273/1850 cut-off events. [2023-01-27 22:28:02,116 INFO L131 PetriNetUnfolder]: For 938/1158 co-relation queries the response was YES. [2023-01-27 22:28:02,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 1850 events. 1273/1850 cut-off events. For 938/1158 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8112 event pairs, 323 based on Foata normal form. 220/1854 useless extension candidates. Maximal degree in co-relation 4387. Up to 673 conditions per place. [2023-01-27 22:28:02,123 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 95 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2023-01-27 22:28:02,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 112 transitions, 568 flow [2023-01-27 22:28:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 22:28:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 22:28:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1677 transitions. [2023-01-27 22:28:02,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34570191713048853 [2023-01-27 22:28:02,127 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1677 transitions. [2023-01-27 22:28:02,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1677 transitions. [2023-01-27 22:28:02,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:02,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1677 transitions. [2023-01-27 22:28:02,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 186.33333333333334) internal successors, (1677), 9 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,136 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,136 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 9 states and 1677 transitions. [2023-01-27 22:28:02,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 112 transitions, 568 flow [2023-01-27 22:28:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 112 transitions, 552 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 22:28:02,140 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 213 flow [2023-01-27 22:28:02,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2023-01-27 22:28:02,141 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-01-27 22:28:02,141 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 213 flow [2023-01-27 22:28:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:02,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:02,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:02,346 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,SelfDestructingSolverStorable2 [2023-01-27 22:28:02,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:02,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash -316438106, now seen corresponding path program 2 times [2023-01-27 22:28:02,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:02,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479002421] [2023-01-27 22:28:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:02,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:02,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:02,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479002421] [2023-01-27 22:28:02,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479002421] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:02,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512837729] [2023-01-27 22:28:02,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 22:28:02,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:02,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:02,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:02,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 22:28:02,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:28:02,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:02,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 22:28:02,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:02,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 22:28:02,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512837729] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:28:02,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 22:28:02,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-01-27 22:28:02,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933307870] [2023-01-27 22:28:02,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:28:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 22:28:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 22:28:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-01-27 22:28:02,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 539 [2023-01-27 22:28:02,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:02,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 539 [2023-01-27 22:28:02,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:02,903 INFO L130 PetriNetUnfolder]: 2209/3209 cut-off events. [2023-01-27 22:28:02,903 INFO L131 PetriNetUnfolder]: For 2718/3098 co-relation queries the response was YES. [2023-01-27 22:28:02,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 3209 events. 2209/3209 cut-off events. For 2718/3098 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14882 event pairs, 889 based on Foata normal form. 381/3584 useless extension candidates. Maximal degree in co-relation 9164. Up to 1821 conditions per place. [2023-01-27 22:28:02,918 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 97 selfloop transitions, 8 changer transitions 11/118 dead transitions. [2023-01-27 22:28:02,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 118 transitions, 701 flow [2023-01-27 22:28:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 22:28:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 22:28:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1400 transitions. [2023-01-27 22:28:02,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2023-01-27 22:28:02,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1400 transitions. [2023-01-27 22:28:02,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1400 transitions. [2023-01-27 22:28:02,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:02,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1400 transitions. [2023-01-27 22:28:02,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,927 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 213 flow. Second operand 6 states and 1400 transitions. [2023-01-27 22:28:02,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 118 transitions, 701 flow [2023-01-27 22:28:02,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 118 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 22:28:02,936 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 283 flow [2023-01-27 22:28:02,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-01-27 22:28:02,937 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2023-01-27 22:28:02,937 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 283 flow [2023-01-27 22:28:02,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:02,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:02,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:02,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:03,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:03,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2030662522, now seen corresponding path program 3 times [2023-01-27 22:28:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628851047] [2023-01-27 22:28:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:03,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:03,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628851047] [2023-01-27 22:28:03,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628851047] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:03,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465538638] [2023-01-27 22:28:03,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 22:28:03,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:03,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:03,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:03,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 22:28:03,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 22:28:03,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:03,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 22:28:03,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:03,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 22:28:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465538638] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:28:03,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 22:28:03,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-01-27 22:28:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366096440] [2023-01-27 22:28:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:28:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 22:28:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 22:28:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-27 22:28:03,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 539 [2023-01-27 22:28:03,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:03,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:03,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 539 [2023-01-27 22:28:03,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:03,799 INFO L130 PetriNetUnfolder]: 2623/3817 cut-off events. [2023-01-27 22:28:03,799 INFO L131 PetriNetUnfolder]: For 5080/5532 co-relation queries the response was YES. [2023-01-27 22:28:03,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12088 conditions, 3817 events. 2623/3817 cut-off events. For 5080/5532 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18769 event pairs, 1005 based on Foata normal form. 453/4264 useless extension candidates. Maximal degree in co-relation 12059. Up to 1771 conditions per place. [2023-01-27 22:28:03,817 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 94 selfloop transitions, 15 changer transitions 11/122 dead transitions. [2023-01-27 22:28:03,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 122 transitions, 781 flow [2023-01-27 22:28:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 22:28:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 22:28:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1409 transitions. [2023-01-27 22:28:03,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356833642547928 [2023-01-27 22:28:03,819 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1409 transitions. [2023-01-27 22:28:03,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1409 transitions. [2023-01-27 22:28:03,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:03,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1409 transitions. [2023-01-27 22:28:03,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.83333333333334) internal successors, (1409), 6 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:03,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:03,825 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:03,825 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 283 flow. Second operand 6 states and 1409 transitions. [2023-01-27 22:28:03,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 122 transitions, 781 flow [2023-01-27 22:28:03,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 122 transitions, 766 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 22:28:03,839 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 398 flow [2023-01-27 22:28:03,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-01-27 22:28:03,840 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2023-01-27 22:28:03,840 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 398 flow [2023-01-27 22:28:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:03,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:03,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:03,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:04,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:04,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:04,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1967518296, now seen corresponding path program 4 times [2023-01-27 22:28:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:04,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406820304] [2023-01-27 22:28:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:04,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:04,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:04,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406820304] [2023-01-27 22:28:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406820304] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:04,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309452229] [2023-01-27 22:28:04,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 22:28:04,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:04,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:04,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:04,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 22:28:04,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 22:28:04,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:04,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 22:28:04,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:04,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309452229] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:04,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-01-27 22:28:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661680326] [2023-01-27 22:28:04,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 22:28:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 22:28:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-27 22:28:04,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 539 [2023-01-27 22:28:04,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:04,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:04,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 539 [2023-01-27 22:28:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:05,154 INFO L130 PetriNetUnfolder]: 4349/6260 cut-off events. [2023-01-27 22:28:05,154 INFO L131 PetriNetUnfolder]: For 12447/12447 co-relation queries the response was YES. [2023-01-27 22:28:05,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20966 conditions, 6260 events. 4349/6260 cut-off events. For 12447/12447 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30578 event pairs, 70 based on Foata normal form. 16/6272 useless extension candidates. Maximal degree in co-relation 20934. Up to 1455 conditions per place. [2023-01-27 22:28:05,182 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 193 selfloop transitions, 99 changer transitions 0/292 dead transitions. [2023-01-27 22:28:05,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 292 transitions, 2084 flow [2023-01-27 22:28:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 22:28:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 22:28:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3949 transitions. [2023-01-27 22:28:05,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33302411873840443 [2023-01-27 22:28:05,190 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3949 transitions. [2023-01-27 22:28:05,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3949 transitions. [2023-01-27 22:28:05,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:05,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3949 transitions. [2023-01-27 22:28:05,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 179.5) internal successors, (3949), 22 states have internal predecessors, (3949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:05,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:05,206 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:05,206 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 398 flow. Second operand 22 states and 3949 transitions. [2023-01-27 22:28:05,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 292 transitions, 2084 flow [2023-01-27 22:28:05,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 292 transitions, 2038 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-27 22:28:05,253 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1316 flow [2023-01-27 22:28:05,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1316, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2023-01-27 22:28:05,254 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2023-01-27 22:28:05,254 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1316 flow [2023-01-27 22:28:05,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:05,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:05,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:05,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:05,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:05,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash 902285986, now seen corresponding path program 5 times [2023-01-27 22:28:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901254883] [2023-01-27 22:28:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:05,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901254883] [2023-01-27 22:28:05,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901254883] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185432591] [2023-01-27 22:28:05,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 22:28:05,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:05,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:05,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:05,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 22:28:05,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 22:28:05,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:05,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 22:28:05,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:05,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185432591] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 22:28:05,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 22:28:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-01-27 22:28:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293127492] [2023-01-27 22:28:05,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 22:28:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 22:28:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 22:28:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-01-27 22:28:05,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 539 [2023-01-27 22:28:05,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1316 flow. Second operand has 16 states, 16 states have (on average 173.125) internal successors, (2770), 16 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:05,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:05,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 539 [2023-01-27 22:28:05,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:07,126 INFO L130 PetriNetUnfolder]: 7600/10923 cut-off events. [2023-01-27 22:28:07,126 INFO L131 PetriNetUnfolder]: For 47770/47770 co-relation queries the response was YES. [2023-01-27 22:28:07,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45361 conditions, 10923 events. 7600/10923 cut-off events. For 47770/47770 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 58179 event pairs, 641 based on Foata normal form. 26/10948 useless extension candidates. Maximal degree in co-relation 45277. Up to 1894 conditions per place. [2023-01-27 22:28:07,197 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 285 selfloop transitions, 167 changer transitions 0/452 dead transitions. [2023-01-27 22:28:07,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 452 transitions, 4331 flow [2023-01-27 22:28:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 22:28:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 22:28:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3467 transitions. [2023-01-27 22:28:07,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33854115809003027 [2023-01-27 22:28:07,204 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3467 transitions. [2023-01-27 22:28:07,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3467 transitions. [2023-01-27 22:28:07,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:07,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3467 transitions. [2023-01-27 22:28:07,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 182.47368421052633) internal successors, (3467), 19 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:07,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:07,227 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:07,227 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1316 flow. Second operand 19 states and 3467 transitions. [2023-01-27 22:28:07,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 452 transitions, 4331 flow [2023-01-27 22:28:07,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 452 transitions, 4194 flow, removed 63 selfloop flow, removed 3 redundant places. [2023-01-27 22:28:07,683 INFO L231 Difference]: Finished difference. Result has 125 places, 247 transitions, 2987 flow [2023-01-27 22:28:07,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2987, PETRI_PLACES=125, PETRI_TRANSITIONS=247} [2023-01-27 22:28:07,683 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2023-01-27 22:28:07,683 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 247 transitions, 2987 flow [2023-01-27 22:28:07,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 173.125) internal successors, (2770), 16 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:07,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:07,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:07,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:07,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:07,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:07,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 166239918, now seen corresponding path program 6 times [2023-01-27 22:28:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:07,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77778206] [2023-01-27 22:28:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 22:28:08,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:08,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77778206] [2023-01-27 22:28:08,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77778206] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:08,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397556813] [2023-01-27 22:28:08,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 22:28:08,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:08,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:08,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 22:28:08,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-27 22:28:08,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 22:28:08,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 22:28:08,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 22:28:08,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 22:28:08,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397556813] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:28:08,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 22:28:08,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-01-27 22:28:08,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710880369] [2023-01-27 22:28:08,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:28:08,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 22:28:08,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:28:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 22:28:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-01-27 22:28:08,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 539 [2023-01-27 22:28:08,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 247 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:08,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:28:08,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 539 [2023-01-27 22:28:08,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 22:28:09,339 INFO L130 PetriNetUnfolder]: 6243/9080 cut-off events. [2023-01-27 22:28:09,340 INFO L131 PetriNetUnfolder]: For 70650/70748 co-relation queries the response was YES. [2023-01-27 22:28:09,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44789 conditions, 9080 events. 6243/9080 cut-off events. For 70650/70748 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 49714 event pairs, 1989 based on Foata normal form. 92/9160 useless extension candidates. Maximal degree in co-relation 44687. Up to 4451 conditions per place. [2023-01-27 22:28:09,462 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 203 selfloop transitions, 67 changer transitions 13/312 dead transitions. [2023-01-27 22:28:09,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 312 transitions, 4005 flow [2023-01-27 22:28:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 22:28:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 22:28:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1403 transitions. [2023-01-27 22:28:09,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43382807668521955 [2023-01-27 22:28:09,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1403 transitions. [2023-01-27 22:28:09,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1403 transitions. [2023-01-27 22:28:09,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 22:28:09,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1403 transitions. [2023-01-27 22:28:09,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,470 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,470 INFO L175 Difference]: Start difference. First operand has 125 places, 247 transitions, 2987 flow. Second operand 6 states and 1403 transitions. [2023-01-27 22:28:09,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 312 transitions, 4005 flow [2023-01-27 22:28:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 312 transitions, 3815 flow, removed 62 selfloop flow, removed 4 redundant places. [2023-01-27 22:28:09,760 INFO L231 Difference]: Finished difference. Result has 129 places, 251 transitions, 3091 flow [2023-01-27 22:28:09,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3091, PETRI_PLACES=129, PETRI_TRANSITIONS=251} [2023-01-27 22:28:09,761 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2023-01-27 22:28:09,761 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 251 transitions, 3091 flow [2023-01-27 22:28:09,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 22:28:09,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:28:09,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:28:09,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 22:28:09,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:09,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 22:28:09,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:28:09,975 INFO L85 PathProgramCache]: Analyzing trace with hash 205007497, now seen corresponding path program 1 times [2023-01-27 22:28:09,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:28:09,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694541884] [2023-01-27 22:28:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:09,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:28:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:28:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:28:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694541884] [2023-01-27 22:28:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694541884] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 22:28:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202981638] [2023-01-27 22:28:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:28:12,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:28:12,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 22:28:12,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 22:28:12,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 22:28:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:28:12,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-27 22:28:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:28:12,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:12,830 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2023-01-27 22:28:12,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2023-01-27 22:28:12,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:12,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:12,950 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-27 22:28:12,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-01-27 22:28:13,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:13,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:13,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:13,088 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-01-27 22:28:13,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2023-01-27 22:28:13,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:13,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:13,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:13,272 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-01-27 22:28:13,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2023-01-27 22:28:13,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-01-27 22:28:14,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:14,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:14,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-01-27 22:28:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:14,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:14,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:28:14,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-01-27 22:28:14,713 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 22:28:14,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2023-01-27 22:28:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 22:28:15,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:28:37,042 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-01-27 22:28:37,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 190 [2023-01-27 22:28:37,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:37,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233057 treesize of output 224681 [2023-01-27 22:28:40,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:40,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36342 treesize of output 31718 [2023-01-27 22:28:43,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:43,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41654 treesize of output 31942 [2023-01-27 22:28:48,704 WARN L222 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 1044 DAG size of output: 1035 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:28:56,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:28:56,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10427 treesize of output 9751 [2023-01-27 22:30:40,400 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:33:30,131 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:36:49,659 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:40:07,543 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 22:41:31,731 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-27 22:42:03,676 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 22:42:03,678 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 22:42:03,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 22:42:03,719 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:42:03,719 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:42:03,885 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,SelfDestructingSolverStorable8 [2023-01-27 22:42:03,885 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 6ms.. [2023-01-27 22:42:03,888 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 22:42:03,889 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 22:42:03,889 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 22:42:03,889 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2023-01-27 22:42:03,891 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:42:03,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:42:03,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:42:03 BasicIcfg [2023-01-27 22:42:03,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:42:03,893 INFO L158 Benchmark]: Toolchain (without parser) took 850395.33ms. Allocated memory was 593.5MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 546.6MB in the beginning and 1.3GB in the end (delta: -723.4MB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-01-27 22:42:03,893 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 369.1MB. Free memory was 312.5MB in the beginning and 312.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:42:03,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.30ms. Allocated memory is still 593.5MB. Free memory was 546.6MB in the beginning and 534.5MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 22:42:03,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.48ms. Allocated memory is still 593.5MB. Free memory was 534.5MB in the beginning and 532.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:42:03,893 INFO L158 Benchmark]: Boogie Preprocessor took 24.31ms. Allocated memory is still 593.5MB. Free memory was 532.4MB in the beginning and 530.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:42:03,894 INFO L158 Benchmark]: RCFGBuilder took 461.47ms. Allocated memory is still 593.5MB. Free memory was 530.3MB in the beginning and 507.9MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-27 22:42:03,894 INFO L158 Benchmark]: TraceAbstraction took 849650.37ms. Allocated memory was 593.5MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 507.3MB in the beginning and 1.3GB in the end (delta: -762.7MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-01-27 22:42:03,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 369.1MB. Free memory was 312.5MB in the beginning and 312.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 228.30ms. Allocated memory is still 593.5MB. Free memory was 546.6MB in the beginning and 534.5MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.48ms. Allocated memory is still 593.5MB. Free memory was 534.5MB in the beginning and 532.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.31ms. Allocated memory is still 593.5MB. Free memory was 532.4MB in the beginning and 530.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 461.47ms. Allocated memory is still 593.5MB. Free memory was 530.3MB in the beginning and 507.9MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 849650.37ms. Allocated memory was 593.5MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 507.3MB in the beginning and 1.3GB in the end (delta: -762.7MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 244 PlacesBefore, 39 PlacesAfterwards, 259 TransitionsBefore, 36 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 165 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 45 TrivialYvCompositions, 6 ConcurrentYvCompositions, 18 ChoiceCompositions, 267 TotalNumberOfCompositions, 4237 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2434, independent: 2300, independent conditional: 0, independent unconditional: 2300, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1133, independent: 1086, independent conditional: 0, independent unconditional: 1086, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2434, independent: 1214, independent conditional: 0, independent unconditional: 1214, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1133, unknown conditional: 0, unknown unconditional: 1133] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 6ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 6ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 6ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 6ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 290 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 849.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 719 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 719 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 159 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2977 IncrementalHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 56 mSDtfsCounter, 2977 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 286 SyntacticMatches, 8 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3091occurred in iteration=8, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 437 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 1561 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2078 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 72/87 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown