/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:28:09,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:28:09,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:28:09,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:28:09,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:28:09,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:28:09,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:28:09,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:28:09,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:28:09,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:28:09,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:28:09,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:28:09,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:28:09,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:28:09,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:28:09,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:28:09,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:28:09,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:28:09,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:28:09,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:28:09,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:28:09,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:28:09,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:28:09,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:28:09,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 05:28:09,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:28:09,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:28:09,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:28:09,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:28:09,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:28:09,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:28:09,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:28:09,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:28:09,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:28:09,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:28:09,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:28:09,198 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 [2023-01-28 05:28:09,223 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:28:09,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:28:09,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:28:09,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:28:09,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:28:09,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:28:09,225 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:28:09,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:28:09,225 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:28:09,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:28:09,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:28:09,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:28:09,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:28:09,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:28:09,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:28:09,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:28:09,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:28:09,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:28:09,414 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:28:09,415 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:28:09,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-01-28 05:28:10,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:28:10,569 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:28:10,569 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-01-28 05:28:10,574 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5531b4093/1e544afd0e6344208352a68a7fd2b165/FLAG05b4c8f74 [2023-01-28 05:28:10,583 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5531b4093/1e544afd0e6344208352a68a7fd2b165 [2023-01-28 05:28:10,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:28:10,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:28:10,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:28:10,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:28:10,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:28:10,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e91f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10, skipping insertion in model container [2023-01-28 05:28:10,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:28:10,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:28:10,716 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-three-array-max.wvr.c[2823,2836] [2023-01-28 05:28:10,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:28:10,735 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:28:10,756 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-three-array-max.wvr.c[2823,2836] [2023-01-28 05:28:10,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:28:10,765 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:28:10,766 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:28:10,770 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:28:10,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10 WrapperNode [2023-01-28 05:28:10,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:28:10,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:28:10,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:28:10,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:28:10,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,801 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 236 [2023-01-28 05:28:10,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:28:10,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:28:10,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:28:10,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:28:10,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:28:10,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:28:10,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:28:10,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:28:10,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (1/1) ... [2023-01-28 05:28:10,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:28:10,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:28:10,853 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) [2023-01-28 05:28:10,865 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 [2023-01-28 05:28:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:28:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:28:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:28:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:28:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:28:10,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:28:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:28:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:28:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:28:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:28:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:28:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:28:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:28:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 05:28:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:28:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:28:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:28:10,884 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:28:10,955 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:28:10,956 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:28:11,301 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:28:11,359 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:28:11,359 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 05:28:11,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:28:11 BoogieIcfgContainer [2023-01-28 05:28:11,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:28:11,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:28:11,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:28:11,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:28:11,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:28:10" (1/3) ... [2023-01-28 05:28:11,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfeb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:28:11, skipping insertion in model container [2023-01-28 05:28:11,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:28:10" (2/3) ... [2023-01-28 05:28:11,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cfeb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:28:11, skipping insertion in model container [2023-01-28 05:28:11,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:28:11" (3/3) ... [2023-01-28 05:28:11,371 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-01-28 05:28:11,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:28:11,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:28:11,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:28:11,475 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 05:28:11,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 284 transitions, 592 flow [2023-01-28 05:28:11,605 INFO L130 PetriNetUnfolder]: 27/281 cut-off events. [2023-01-28 05:28:11,606 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:28:11,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 281 events. 27/281 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 209 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 222. Up to 3 conditions per place. [2023-01-28 05:28:11,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 284 transitions, 592 flow [2023-01-28 05:28:11,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 271 transitions, 560 flow [2023-01-28 05:28:11,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:28:11,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 271 transitions, 560 flow [2023-01-28 05:28:11,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 271 transitions, 560 flow [2023-01-28 05:28:11,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 271 transitions, 560 flow [2023-01-28 05:28:11,667 INFO L130 PetriNetUnfolder]: 27/271 cut-off events. [2023-01-28 05:28:11,667 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:28:11,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 271 events. 27/271 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 222. Up to 3 conditions per place. [2023-01-28 05:28:11,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 2634 [2023-01-28 05:28:18,469 INFO L134 LiptonReduction]: Checked pairs total: 3780 [2023-01-28 05:28:18,470 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-01-28 05:28:18,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:28:18,483 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;@57655faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:28:18,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 05:28:18,488 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2023-01-28 05:28:18,488 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:28:18,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:18,489 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] [2023-01-28 05:28:18,489 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)] === [2023-01-28 05:28:18,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:18,492 INFO L85 PathProgramCache]: Analyzing trace with hash -823952724, now seen corresponding path program 1 times [2023-01-28 05:28:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525292953] [2023-01-28 05:28:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:28:18,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:18,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525292953] [2023-01-28 05:28:18,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525292953] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:28:18,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:28:18,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:28:18,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543853623] [2023-01-28 05:28:18,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:28:18,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:28:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:18,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:28:18,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:28:18,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 584 [2023-01-28 05:28:18,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:18,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:18,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 584 [2023-01-28 05:28:18,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:19,031 INFO L130 PetriNetUnfolder]: 692/923 cut-off events. [2023-01-28 05:28:19,031 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-01-28 05:28:19,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 923 events. 692/923 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3152 event pairs, 315 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 1616. Up to 907 conditions per place. [2023-01-28 05:28:19,038 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 30 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-01-28 05:28:19,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 152 flow [2023-01-28 05:28:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:28:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:28:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-01-28 05:28:19,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3818493150684932 [2023-01-28 05:28:19,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-01-28 05:28:19,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-01-28 05:28:19,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:19,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-01-28 05:28:19,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,082 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 86 flow. Second operand 3 states and 669 transitions. [2023-01-28 05:28:19,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 152 flow [2023-01-28 05:28:19,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 05:28:19,088 INFO L231 Difference]: Finished difference. Result has 33 places, 35 transitions, 86 flow [2023-01-28 05:28:19,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=35} [2023-01-28 05:28:19,094 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-01-28 05:28:19,094 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions, 86 flow [2023-01-28 05:28:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:19,095 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] [2023-01-28 05:28:19,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:28:19,095 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)] === [2023-01-28 05:28:19,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1618956068, now seen corresponding path program 1 times [2023-01-28 05:28:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:19,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992522629] [2023-01-28 05:28:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:19,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:28:19,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992522629] [2023-01-28 05:28:19,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992522629] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:28:19,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:28:19,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:28:19,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819780489] [2023-01-28 05:28:19,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:28:19,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:28:19,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:28:19,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:28:19,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 584 [2023-01-28 05:28:19,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:19,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 584 [2023-01-28 05:28:19,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:19,392 INFO L130 PetriNetUnfolder]: 692/925 cut-off events. [2023-01-28 05:28:19,392 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:28:19,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 925 events. 692/925 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3119 event pairs, 315 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1857. Up to 906 conditions per place. [2023-01-28 05:28:19,396 INFO L137 encePairwiseOnDemand]: 577/584 looper letters, 28 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-01-28 05:28:19,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 158 flow [2023-01-28 05:28:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:28:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:28:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 884 transitions. [2023-01-28 05:28:19,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784246575342466 [2023-01-28 05:28:19,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 884 transitions. [2023-01-28 05:28:19,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 884 transitions. [2023-01-28 05:28:19,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:19,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 884 transitions. [2023-01-28 05:28:19,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,403 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 86 flow. Second operand 4 states and 884 transitions. [2023-01-28 05:28:19,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 158 flow [2023-01-28 05:28:19,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 154 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 05:28:19,404 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 110 flow [2023-01-28 05:28:19,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-01-28 05:28:19,405 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-28 05:28:19,405 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 110 flow [2023-01-28 05:28:19,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:19,406 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] [2023-01-28 05:28:19,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:28:19,406 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)] === [2023-01-28 05:28:19,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1120690575, now seen corresponding path program 1 times [2023-01-28 05:28:19,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:19,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696571081] [2023-01-28 05:28:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:19,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:28:19,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:19,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696571081] [2023-01-28 05:28:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696571081] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:28:19,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:28:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:28:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260943256] [2023-01-28 05:28:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:28:19,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:28:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:28:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:28:19,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 584 [2023-01-28 05:28:19,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:19,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 584 [2023-01-28 05:28:19,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:19,735 INFO L130 PetriNetUnfolder]: 1277/1690 cut-off events. [2023-01-28 05:28:19,736 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-28 05:28:19,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 1690 events. 1277/1690 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6505 event pairs, 264 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 3407. Up to 1016 conditions per place. [2023-01-28 05:28:19,743 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 51 selfloop transitions, 4 changer transitions 1/59 dead transitions. [2023-01-28 05:28:19,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 59 transitions, 271 flow [2023-01-28 05:28:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:28:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:28:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-01-28 05:28:19,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469178082191781 [2023-01-28 05:28:19,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-01-28 05:28:19,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-01-28 05:28:19,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:19,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-01-28 05:28:19,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,750 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 110 flow. Second operand 3 states and 783 transitions. [2023-01-28 05:28:19,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 59 transitions, 271 flow [2023-01-28 05:28:19,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:28:19,751 INFO L231 Difference]: Finished difference. Result has 38 places, 40 transitions, 135 flow [2023-01-28 05:28:19,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=38, PETRI_TRANSITIONS=40} [2023-01-28 05:28:19,752 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-01-28 05:28:19,752 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 40 transitions, 135 flow [2023-01-28 05:28:19,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:19,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:19,752 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] [2023-01-28 05:28:19,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:28:19,753 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)] === [2023-01-28 05:28:19,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1651521349, now seen corresponding path program 1 times [2023-01-28 05:28:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104676463] [2023-01-28 05:28:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:28:19,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:19,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104676463] [2023-01-28 05:28:19,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104676463] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807451363] [2023-01-28 05:28:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:19,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:19,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:28:19,858 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) [2023-01-28 05:28:19,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:28:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:19,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 05:28:19,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:28:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:28:20,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:28:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:28:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807451363] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:28:20,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:28:20,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 05:28:20,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337933083] [2023-01-28 05:28:20,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:28:20,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 05:28:20,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:20,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 05:28:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:28:20,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 584 [2023-01-28 05:28:20,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:20,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:20,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 584 [2023-01-28 05:28:20,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:20,450 INFO L130 PetriNetUnfolder]: 1914/2647 cut-off events. [2023-01-28 05:28:20,450 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-01-28 05:28:20,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5875 conditions, 2647 events. 1914/2647 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11676 event pairs, 666 based on Foata normal form. 0/1807 useless extension candidates. Maximal degree in co-relation 3542. Up to 1262 conditions per place. [2023-01-28 05:28:20,461 INFO L137 encePairwiseOnDemand]: 573/584 looper letters, 87 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2023-01-28 05:28:20,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 106 transitions, 548 flow [2023-01-28 05:28:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 05:28:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 05:28:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1761 transitions. [2023-01-28 05:28:20,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769263698630137 [2023-01-28 05:28:20,465 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1761 transitions. [2023-01-28 05:28:20,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1761 transitions. [2023-01-28 05:28:20,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:20,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1761 transitions. [2023-01-28 05:28:20,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 220.125) internal successors, (1761), 8 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:20,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:20,474 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:20,474 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 135 flow. Second operand 8 states and 1761 transitions. [2023-01-28 05:28:20,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 106 transitions, 548 flow [2023-01-28 05:28:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 106 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:28:20,476 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 250 flow [2023-01-28 05:28:20,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=250, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2023-01-28 05:28:20,477 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-01-28 05:28:20,477 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 250 flow [2023-01-28 05:28:20,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:20,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:20,479 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] [2023-01-28 05:28:20,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:28:20,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:20,685 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)] === [2023-01-28 05:28:20,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1450108102, now seen corresponding path program 1 times [2023-01-28 05:28:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:20,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264026447] [2023-01-28 05:28:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:20,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:28:20,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264026447] [2023-01-28 05:28:20,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264026447] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301626903] [2023-01-28 05:28:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:20,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:20,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:28:20,829 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) [2023-01-28 05:28:20,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:28:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:20,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 05:28:20,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:28:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:28:20,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:28:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:28:21,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301626903] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:28:21,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:28:21,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 05:28:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611088578] [2023-01-28 05:28:21,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:28:21,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 05:28:21,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:21,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 05:28:21,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:28:21,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 584 [2023-01-28 05:28:21,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:21,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:21,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 584 [2023-01-28 05:28:21,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:21,351 INFO L130 PetriNetUnfolder]: 1361/1892 cut-off events. [2023-01-28 05:28:21,352 INFO L131 PetriNetUnfolder]: For 315/337 co-relation queries the response was YES. [2023-01-28 05:28:21,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 1892 events. 1361/1892 cut-off events. For 315/337 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7843 event pairs, 473 based on Foata normal form. 22/1379 useless extension candidates. Maximal degree in co-relation 4091. Up to 1170 conditions per place. [2023-01-28 05:28:21,360 INFO L137 encePairwiseOnDemand]: 574/584 looper letters, 43 selfloop transitions, 10 changer transitions 34/89 dead transitions. [2023-01-28 05:28:21,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 533 flow [2023-01-28 05:28:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 05:28:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 05:28:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1723 transitions. [2023-01-28 05:28:21,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3687928082191781 [2023-01-28 05:28:21,364 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1723 transitions. [2023-01-28 05:28:21,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1723 transitions. [2023-01-28 05:28:21,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:21,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1723 transitions. [2023-01-28 05:28:21,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 215.375) internal successors, (1723), 8 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:21,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:21,374 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 584.0) internal successors, (5256), 9 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:21,375 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 250 flow. Second operand 8 states and 1723 transitions. [2023-01-28 05:28:21,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 533 flow [2023-01-28 05:28:21,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 512 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 05:28:21,380 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 202 flow [2023-01-28 05:28:21,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=202, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-01-28 05:28:21,382 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-28 05:28:21,384 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 202 flow [2023-01-28 05:28:21,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:21,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:21,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:28:21,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:28:21,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:21,591 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)] === [2023-01-28 05:28:21,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:21,592 INFO L85 PathProgramCache]: Analyzing trace with hash 552953634, now seen corresponding path program 2 times [2023-01-28 05:28:21,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:21,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794744084] [2023-01-28 05:28:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:21,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:28:21,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:21,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794744084] [2023-01-28 05:28:21,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794744084] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502675023] [2023-01-28 05:28:21,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:28:21,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:21,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:28:21,755 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) [2023-01-28 05:28:21,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:28:21,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:28:21,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:28:21,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 05:28:21,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:28:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:28:22,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:28:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:28:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502675023] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:22,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:28:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 05:28:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386337142] [2023-01-28 05:28:22,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:28:22,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:28:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:28:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 05:28:22,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 584 [2023-01-28 05:28:22,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:22,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 584 [2023-01-28 05:28:22,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:22,235 INFO L130 PetriNetUnfolder]: 1547/2085 cut-off events. [2023-01-28 05:28:22,235 INFO L131 PetriNetUnfolder]: For 672/672 co-relation queries the response was YES. [2023-01-28 05:28:22,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 2085 events. 1547/2085 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8216 event pairs, 465 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 5511. Up to 1568 conditions per place. [2023-01-28 05:28:22,244 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 55 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-01-28 05:28:22,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 385 flow [2023-01-28 05:28:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:28:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:28:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1305 transitions. [2023-01-28 05:28:22,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724315068493151 [2023-01-28 05:28:22,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1305 transitions. [2023-01-28 05:28:22,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1305 transitions. [2023-01-28 05:28:22,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:22,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1305 transitions. [2023-01-28 05:28:22,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,254 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 202 flow. Second operand 6 states and 1305 transitions. [2023-01-28 05:28:22,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 385 flow [2023-01-28 05:28:22,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 349 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-01-28 05:28:22,262 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 191 flow [2023-01-28 05:28:22,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-01-28 05:28:22,264 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-01-28 05:28:22,264 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 191 flow [2023-01-28 05:28:22,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:22,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:28:22,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 05:28:22,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:22,471 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)] === [2023-01-28 05:28:22,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:22,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1297932992, now seen corresponding path program 1 times [2023-01-28 05:28:22,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:22,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655280827] [2023-01-28 05:28:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:22,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:28:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:22,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655280827] [2023-01-28 05:28:22,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655280827] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:22,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358967492] [2023-01-28 05:28:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:22,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:22,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:28:22,596 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) [2023-01-28 05:28:22,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:28:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:22,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 05:28:22,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:28:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:28:22,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:28:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 05:28:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358967492] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:22,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:28:22,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 05:28:22,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056388750] [2023-01-28 05:28:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:28:22,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:28:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:22,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:28:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 05:28:22,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 584 [2023-01-28 05:28:22,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:22,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 584 [2023-01-28 05:28:22,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:22,938 INFO L130 PetriNetUnfolder]: 1146/1548 cut-off events. [2023-01-28 05:28:22,938 INFO L131 PetriNetUnfolder]: For 488/601 co-relation queries the response was YES. [2023-01-28 05:28:22,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4033 conditions, 1548 events. 1146/1548 cut-off events. For 488/601 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5768 event pairs, 281 based on Foata normal form. 163/1370 useless extension candidates. Maximal degree in co-relation 3997. Up to 1015 conditions per place. [2023-01-28 05:28:22,945 INFO L137 encePairwiseOnDemand]: 578/584 looper letters, 49 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-01-28 05:28:22,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 346 flow [2023-01-28 05:28:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:28:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:28:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1277 transitions. [2023-01-28 05:28:22,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3644406392694064 [2023-01-28 05:28:22,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1277 transitions. [2023-01-28 05:28:22,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1277 transitions. [2023-01-28 05:28:22,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:22,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1277 transitions. [2023-01-28 05:28:22,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.83333333333334) internal successors, (1277), 6 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,954 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,954 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 191 flow. Second operand 6 states and 1277 transitions. [2023-01-28 05:28:22,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 346 flow [2023-01-28 05:28:22,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 331 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 05:28:22,958 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 208 flow [2023-01-28 05:28:22,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-01-28 05:28:22,959 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-01-28 05:28:22,959 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 208 flow [2023-01-28 05:28:22,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:22,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:22,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:28:22,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 05:28:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:23,165 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)] === [2023-01-28 05:28:23,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2052497291, now seen corresponding path program 1 times [2023-01-28 05:28:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:23,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905056524] [2023-01-28 05:28:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 05:28:23,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905056524] [2023-01-28 05:28:23,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905056524] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:23,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117745423] [2023-01-28 05:28:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:23,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:23,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:28:23,271 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) [2023-01-28 05:28:23,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:28:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:23,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 05:28:23,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:28:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 05:28:23,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:28:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 05:28:23,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117745423] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:23,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:28:23,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-01-28 05:28:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762172443] [2023-01-28 05:28:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:28:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:28:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:28:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:28:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 05:28:23,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 584 [2023-01-28 05:28:23,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 212.66666666666666) internal successors, (1276), 6 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:23,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:28:23,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 584 [2023-01-28 05:28:23,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:28:23,638 INFO L130 PetriNetUnfolder]: 991/1364 cut-off events. [2023-01-28 05:28:23,638 INFO L131 PetriNetUnfolder]: For 764/968 co-relation queries the response was YES. [2023-01-28 05:28:23,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 1364 events. 991/1364 cut-off events. For 764/968 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4732 event pairs, 318 based on Foata normal form. 272/1348 useless extension candidates. Maximal degree in co-relation 3565. Up to 721 conditions per place. [2023-01-28 05:28:23,644 INFO L137 encePairwiseOnDemand]: 577/584 looper letters, 54 selfloop transitions, 8 changer transitions 0/64 dead transitions. [2023-01-28 05:28:23,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 402 flow [2023-01-28 05:28:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:28:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:28:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1298 transitions. [2023-01-28 05:28:23,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704337899543379 [2023-01-28 05:28:23,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1298 transitions. [2023-01-28 05:28:23,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1298 transitions. [2023-01-28 05:28:23,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:28:23,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1298 transitions. [2023-01-28 05:28:23,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:23,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:23,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:23,654 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 208 flow. Second operand 6 states and 1298 transitions. [2023-01-28 05:28:23,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 402 flow [2023-01-28 05:28:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 390 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 05:28:23,657 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 236 flow [2023-01-28 05:28:23,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-01-28 05:28:23,659 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-28 05:28:23,659 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 236 flow [2023-01-28 05:28:23,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.66666666666666) internal successors, (1276), 6 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:28:23,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:28:23,669 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:28:23,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 05:28:23,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:23,878 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)] === [2023-01-28 05:28:23,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:28:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 995945267, now seen corresponding path program 1 times [2023-01-28 05:28:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:28:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624095524] [2023-01-28 05:28:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:23,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:28:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:28:25,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:28:25,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624095524] [2023-01-28 05:28:25,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624095524] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:28:25,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491273782] [2023-01-28 05:28:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:28:25,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:28:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:28:25,920 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) [2023-01-28 05:28:25,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 05:28:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:28:26,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 74 conjunts are in the unsatisfiable core [2023-01-28 05:28:26,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:28:26,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 05:28:26,199 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 05:28:26,200 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 11 treesize of output 11 [2023-01-28 05:28:26,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:26,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2023-01-28 05:28:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:28:26,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 05:28:26,818 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2023-01-28 05:28:26,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 40 [2023-01-28 05:28:27,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:28:27,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:28:27,057 INFO L321 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2023-01-28 05:28:27,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 98 treesize of output 113 [2023-01-28 05:28:28,710 INFO L321 Elim1Store]: treesize reduction 96, result has 75.6 percent of original size [2023-01-28 05:28:28,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 262 treesize of output 442 [2023-01-28 05:28:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-01-28 05:28:33,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:28:34,287 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~maxa~0 |c_thread1Thread1of1ForFork0_#t~mem2|) (let ((.cse0 (+ c_~maxa~0 c_~maxb~0)) (.cse3 (+ c_~C~0.offset 4)) (.cse1 (+ (* c_thread1Thread1of1ForFork0_~i~0 4) c_~B~0.offset))) (and (or (<= c_~maxc~0 .cse0) (forall ((v_ArrVal_505 (Array Int Int))) (<= c_~maxb~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse1)))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse2 c_~C~0.base) .cse3) .cse0) (<= c_~maxb~0 (select (select .cse2 c_~B~0.base) .cse1))))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse5 (select (select .cse4 c_~B~0.base) .cse1))) (or (<= (select (select .cse4 c_~C~0.base) .cse3) (+ .cse5 c_~maxa~0)) (< .cse5 c_~maxb~0))))) (forall ((v_ArrVal_505 (Array Int Int))) (let ((.cse6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse1))) (or (<= c_~maxc~0 (+ .cse6 c_~maxa~0)) (< .cse6 c_~maxb~0))))))) is different from false [2023-01-28 05:28:34,633 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ c_~maxa~0 c_~maxb~0)) (.cse5 (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset 4)) (select (select |c_#memory_int| c_~B~0.base) (+ 4 c_~B~0.offset)))) (.cse4 (select |c_#memory_int| c_~C~0.base)) (.cse3 (+ (* c_thread1Thread1of1ForFork0_~i~0 4) c_~B~0.offset))) (and (forall ((v_ArrVal_503 Int)) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse1 (+ ~C~0.offset 4))) (let ((.cse0 (store (store |c_#memory_int| c_~C~0.base (store .cse4 .cse1 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse0 c_~C~0.base) .cse1) .cse2) (<= c_~maxb~0 (select (select .cse0 c_~B~0.base) .cse3)))))) (< .cse5 v_ArrVal_503))) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int)) (v_ArrVal_503 Int)) (or (< .cse5 v_ArrVal_503) (<= c_~maxb~0 (select (select (store (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3)))) (<= c_~maxc~0 .cse2)) (forall ((v_ArrVal_503 Int)) (or (< .cse5 v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse7 (+ ~C~0.offset 4))) (let ((.cse6 (store (store |c_#memory_int| c_~C~0.base (store .cse4 .cse7 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse8 (select (select .cse6 c_~B~0.base) .cse3))) (or (<= (select (select .cse6 c_~C~0.base) .cse7) (+ .cse8 c_~maxa~0)) (< .cse8 c_~maxb~0)))))))) (forall ((v_ArrVal_503 Int)) (or (< .cse5 v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse9 (select (select (store (store |c_#memory_int| c_~C~0.base (store .cse4 (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3))) (or (< .cse9 c_~maxb~0) (<= c_~maxc~0 (+ .cse9 c_~maxa~0))))))))) (<= c_~maxa~0 |c_thread1Thread1of1ForFork0_#t~mem2|)) is different from false [2023-01-28 05:28:34,736 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ c_~maxa~0 c_~maxb~0)) (.cse5 (+ 4 c_~B~0.offset)) (.cse6 (+ c_~A~0.offset 4)) (.cse3 (+ (* c_thread1Thread1of1ForFork0_~i~0 4) c_~B~0.offset))) (and (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse1 (+ ~C~0.offset 4))) (let ((.cse0 (store (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) .cse1 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (or (<= (select (select .cse0 c_~C~0.base) .cse1) .cse2) (<= c_~maxb~0 (select (select .cse0 c_~B~0.base) .cse3)))))) (< (+ (select (select .cse4 c_~B~0.base) .cse5) (select (select .cse4 c_~A~0.base) .cse6)) v_ArrVal_503)))) (or (<= c_~maxc~0 .cse2) (forall ((v_ArrVal_502 (Array Int Int)) (~C~0.offset Int) (v_ArrVal_505 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (< (+ (select (select .cse7 c_~B~0.base) .cse5) (select (select .cse7 c_~A~0.base) .cse6)) v_ArrVal_503) (<= c_~maxb~0 (select (select (store (store .cse7 c_~C~0.base (store (select .cse7 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3)))))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (< (+ (select (select .cse8 c_~B~0.base) .cse5) (select (select .cse8 c_~A~0.base) .cse6)) v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse11 (+ ~C~0.offset 4))) (let ((.cse10 (store (store .cse8 c_~C~0.base (store (select .cse8 c_~C~0.base) .cse11 v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505))) (let ((.cse9 (select (select .cse10 c_~B~0.base) .cse3))) (or (< .cse9 c_~maxb~0) (<= (select (select .cse10 c_~C~0.base) .cse11) (+ .cse9 c_~maxa~0)))))))))) (forall ((v_ArrVal_502 (Array Int Int)) (v_ArrVal_503 Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_502))) (or (< (+ (select (select .cse12 c_~B~0.base) .cse5) (select (select .cse12 c_~A~0.base) .cse6)) v_ArrVal_503) (forall ((~C~0.offset Int) (v_ArrVal_505 (Array Int Int))) (let ((.cse13 (select (select (store (store .cse12 c_~C~0.base (store (select .cse12 c_~C~0.base) (+ ~C~0.offset 4) v_ArrVal_503)) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_505) c_~B~0.base) .cse3))) (or (< .cse13 c_~maxb~0) (<= c_~maxc~0 (+ .cse13 c_~maxa~0)))))))))) (<= c_~maxa~0 |c_thread1Thread1of1ForFork0_#t~mem2|)) is different from false [2023-01-28 05:28:34,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:34,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6159 treesize of output 6027 [2023-01-28 05:28:35,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2753 treesize of output 2657 [2023-01-28 05:28:35,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:35,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2741 treesize of output 2708 [2023-01-28 05:28:35,115 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:35,116 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 2677 treesize of output 2484 [2023-01-28 05:28:35,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2469 treesize of output 2421 [2023-01-28 05:28:35,245 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:35,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2545 treesize of output 2488 [2023-01-28 05:28:35,306 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:35,307 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 2457 treesize of output 2416 [2023-01-28 05:28:35,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:35,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2441 treesize of output 2432 [2023-01-28 05:28:35,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:28:35,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2441 treesize of output 2432 Received shutdown request... [2023-01-28 05:41:48,505 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 05:41:48,507 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 05:41:48,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 05:41:48,522 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 [2023-01-28 05:41:48,532 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:41:48,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:41:48,709 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 14ms.. [2023-01-28 05:41:48,710 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 05:41:48,710 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 05:41:48,710 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 05:41:48,710 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:41:48,712 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:41:48,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:41:48,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:41:48 BasicIcfg [2023-01-28 05:41:48,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:41:48,714 INFO L158 Benchmark]: Toolchain (without parser) took 818128.56ms. Allocated memory was 337.6MB in the beginning and 1.2GB in the end (delta: 912.3MB). Free memory was 279.1MB in the beginning and 466.9MB in the end (delta: -187.8MB). Peak memory consumption was 742.4MB. Max. memory is 16.0GB. [2023-01-28 05:41:48,715 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 337.6MB. Free memory is still 285.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:41:48,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.80ms. Allocated memory is still 337.6MB. Free memory was 278.8MB in the beginning and 266.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 05:41:48,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.11ms. Allocated memory is still 337.6MB. Free memory was 266.8MB in the beginning and 264.4MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 05:41:48,715 INFO L158 Benchmark]: Boogie Preprocessor took 24.54ms. Allocated memory is still 337.6MB. Free memory was 264.4MB in the beginning and 262.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:41:48,715 INFO L158 Benchmark]: RCFGBuilder took 534.04ms. Allocated memory was 337.6MB in the beginning and 499.1MB in the end (delta: 161.5MB). Free memory was 262.3MB in the beginning and 452.0MB in the end (delta: -189.7MB). Peak memory consumption was 25.6MB. Max. memory is 16.0GB. [2023-01-28 05:41:48,715 INFO L158 Benchmark]: TraceAbstraction took 817351.76ms. Allocated memory was 499.1MB in the beginning and 1.2GB in the end (delta: 750.8MB). Free memory was 451.0MB in the beginning and 466.9MB in the end (delta: -15.9MB). Peak memory consumption was 752.5MB. Max. memory is 16.0GB. [2023-01-28 05:41:48,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 337.6MB. Free memory is still 285.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 182.80ms. Allocated memory is still 337.6MB. Free memory was 278.8MB in the beginning and 266.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.11ms. Allocated memory is still 337.6MB. Free memory was 266.8MB in the beginning and 264.4MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.54ms. Allocated memory is still 337.6MB. Free memory was 264.4MB in the beginning and 262.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 534.04ms. Allocated memory was 337.6MB in the beginning and 499.1MB in the end (delta: 161.5MB). Free memory was 262.3MB in the beginning and 452.0MB in the end (delta: -189.7MB). Peak memory consumption was 25.6MB. Max. memory is 16.0GB. * TraceAbstraction took 817351.76ms. Allocated memory was 499.1MB in the beginning and 1.2GB in the end (delta: 750.8MB). Free memory was 451.0MB in the beginning and 466.9MB in the end (delta: -15.9MB). Peak memory consumption was 752.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 254 PlacesBefore, 36 PlacesAfterwards, 271 TransitionsBefore, 34 TransitionsAfterwards, 2634 CoEnabledTransitionPairs, 7 FixpointIterations, 182 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 51 TrivialYvCompositions, 10 ConcurrentYvCompositions, 19 ChoiceCompositions, 300 TotalNumberOfCompositions, 3780 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2690, independent: 2592, independent conditional: 0, independent unconditional: 2592, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1436, independent: 1408, independent conditional: 0, independent unconditional: 1408, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2690, independent: 1184, independent conditional: 0, independent unconditional: 1184, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 1436, unknown conditional: 0, unknown unconditional: 1436] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 14ms.. - TimeoutResultAtElement [Line: 108]: 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 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 14ms.. - TimeoutResultAtElement [Line: 106]: 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 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 14ms.. - TimeoutResultAtElement [Line: 107]: 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 35 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 14ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 303 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: 817.2s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 388 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 388 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 964 IncrementalHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 5 mSDtfsCounter, 964 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 261 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=4, InterpolantAutomatonStates: 44, 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, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 496 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1801 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 103/124 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 [2023-01-28 05:41:48,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0