/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:56:55,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:56:55,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:56:55,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:56:55,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:56:55,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:56:55,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:56:55,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:56:55,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:56:55,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:56:55,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:56:55,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:56:55,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:56:55,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:56:55,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:56:55,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:56:55,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:56:55,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:56:55,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:56:55,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:56:55,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:56:55,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:56:55,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:56:55,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:56:55,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:56:55,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:56:55,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:56:55,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:56:55,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:56:55,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:56:55,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:56:55,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:56:55,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:56:55,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:56:55,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:56:55,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:56:55,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:56:55,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:56:55,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:56:55,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:56:55,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:56:55,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:56:55,379 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:56:55,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:56:55,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:56:55,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:56:55,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:56:55,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:56:55,381 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:56:55,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:56:55,381 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:56:55,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:56:55,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:56:55,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:56:55,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:56:55,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:56:55,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:56:55,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:56:55,384 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:56:55,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:56:55,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:56:55,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:56:55,609 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:56:55,609 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:56:55,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-01-27 20:56:56,659 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:56:56,785 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:56:56,785 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-01-27 20:56:56,789 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d50bd1f/003d96cb6e7c47d883b4b7a73cf036a0/FLAG08b2750fa [2023-01-27 20:56:56,800 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d50bd1f/003d96cb6e7c47d883b4b7a73cf036a0 [2023-01-27 20:56:56,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:56:56,803 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:56:56,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:56:56,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:56:56,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:56:56,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:56:56" (1/1) ... [2023-01-27 20:56:56,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118bb127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:56, skipping insertion in model container [2023-01-27 20:56:56,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:56:56" (1/1) ... [2023-01-27 20:56:56,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:56:56,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:56:56,956 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/parallel-misc-3.wvr.c[2410,2423] [2023-01-27 20:56:56,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:56:56,967 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:56:56,993 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/parallel-misc-3.wvr.c[2410,2423] [2023-01-27 20:56:56,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:56:56,998 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:56:56,998 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:56:57,003 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:56:57,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57 WrapperNode [2023-01-27 20:56:57,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:56:57,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:56:57,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:56:57,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:56:57,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,026 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-01-27 20:56:57,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:56:57,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:56:57,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:56:57,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:56:57,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,057 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:56:57,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:56:57,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:56:57,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:56:57,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (1/1) ... [2023-01-27 20:56:57,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:56:57,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:56:57,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:56:57,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:56:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:56:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:56:57,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:56:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:56:57,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:56:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:56:57,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:56:57,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:56:57,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 20:56:57,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 20:56:57,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:56:57,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:56:57,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:56:57,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:56:57,105 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:56:57,181 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:56:57,182 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:56:57,320 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:56:57,346 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:56:57,346 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 20:56:57,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:56:57 BoogieIcfgContainer [2023-01-27 20:56:57,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:56:57,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:56:57,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:56:57,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:56:57,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:56:56" (1/3) ... [2023-01-27 20:56:57,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558769c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:56:57, skipping insertion in model container [2023-01-27 20:56:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:56:57" (2/3) ... [2023-01-27 20:56:57,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558769c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:56:57, skipping insertion in model container [2023-01-27 20:56:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:56:57" (3/3) ... [2023-01-27 20:56:57,353 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-01-27 20:56:57,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:56:57,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:56:57,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:56:57,406 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 20:56:57,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 92 transitions, 200 flow [2023-01-27 20:56:57,471 INFO L130 PetriNetUnfolder]: 11/90 cut-off events. [2023-01-27 20:56:57,471 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:56:57,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 11/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-01-27 20:56:57,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 92 transitions, 200 flow [2023-01-27 20:56:57,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 82 transitions, 176 flow [2023-01-27 20:56:57,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:56:57,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 82 transitions, 176 flow [2023-01-27 20:56:57,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 82 transitions, 176 flow [2023-01-27 20:56:57,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 82 transitions, 176 flow [2023-01-27 20:56:57,507 INFO L130 PetriNetUnfolder]: 11/82 cut-off events. [2023-01-27 20:56:57,508 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:56:57,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 11/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-01-27 20:56:57,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-01-27 20:56:59,506 INFO L134 LiptonReduction]: Checked pairs total: 1141 [2023-01-27 20:56:59,506 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-01-27 20:56:59,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:56:59,519 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;@248c6854, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:56:59,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 20:56:59,526 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-01-27 20:56:59,527 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:56:59,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:56:59,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:56:59,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:56:59,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:56:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash 941425486, now seen corresponding path program 1 times [2023-01-27 20:56:59,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:56:59,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627309230] [2023-01-27 20:56:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:56:59,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:56:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:56:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:56:59,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:56:59,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627309230] [2023-01-27 20:56:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627309230] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:56:59,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:56:59,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:56:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897496816] [2023-01-27 20:56:59,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:56:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:56:59,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:56:59,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:56:59,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:56:59,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-27 20:56:59,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:56:59,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-27 20:56:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:56:59,820 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2023-01-27 20:56:59,820 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 20:56:59,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2023-01-27 20:56:59,821 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-01-27 20:56:59,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2023-01-27 20:56:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:56:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:56:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-01-27 20:56:59,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-01-27 20:56:59,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-01-27 20:56:59,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-01-27 20:56:59,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:56:59,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-01-27 20:56:59,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,839 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 251 transitions. [2023-01-27 20:56:59,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 91 flow [2023-01-27 20:56:59,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:56:59,842 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 42 flow [2023-01-27 20:56:59,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2023-01-27 20:56:59,845 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-01-27 20:56:59,845 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 42 flow [2023-01-27 20:56:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:56:59,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:56:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:56:59,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:56:59,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:56:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 789177524, now seen corresponding path program 1 times [2023-01-27 20:56:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:56:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251460728] [2023-01-27 20:56:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:56:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:56:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:56:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:56:59,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:56:59,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251460728] [2023-01-27 20:56:59,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251460728] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:56:59,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:56:59,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:56:59,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577541824] [2023-01-27 20:56:59,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:56:59,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:56:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:56:59,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:56:59,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:56:59,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-27 20:56:59,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:56:59,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-27 20:56:59,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:56:59,932 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-01-27 20:56:59,932 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-27 20:56:59,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 112. Up to 49 conditions per place. [2023-01-27 20:56:59,933 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-01-27 20:56:59,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 106 flow [2023-01-27 20:56:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:56:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:56:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-01-27 20:56:59,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-01-27 20:56:59,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-01-27 20:56:59,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-01-27 20:56:59,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:56:59,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-01-27 20:56:59,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,937 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 42 flow. Second operand 3 states and 251 transitions. [2023-01-27 20:56:59,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 106 flow [2023-01-27 20:56:59,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:56:59,938 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 52 flow [2023-01-27 20:56:59,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-01-27 20:56:59,939 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-01-27 20:56:59,939 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 52 flow [2023-01-27 20:56:59,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:56:59,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:56:59,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:56:59,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:56:59,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:56:59,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:56:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1336220021, now seen corresponding path program 1 times [2023-01-27 20:56:59,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:56:59,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499781544] [2023-01-27 20:56:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:56:59,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:56:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:57:00,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499781544] [2023-01-27 20:57:00,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499781544] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318933078] [2023-01-27 20:57:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:00,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:00,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:00,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:57:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:00,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 20:57:00,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:00,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318933078] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:00,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:00,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 7 [2023-01-27 20:57:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2759294] [2023-01-27 20:57:00,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:00,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:57:00,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:00,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:57:00,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:57:00,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 173 [2023-01-27 20:57:00,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:00,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:00,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 173 [2023-01-27 20:57:00,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:01,026 INFO L130 PetriNetUnfolder]: 61/110 cut-off events. [2023-01-27 20:57:01,027 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-27 20:57:01,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 110 events. 61/110 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 84. Up to 45 conditions per place. [2023-01-27 20:57:01,029 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-01-27 20:57:01,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 47 transitions, 245 flow [2023-01-27 20:57:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:57:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:57:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2023-01-27 20:57:01,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40895953757225434 [2023-01-27 20:57:01,034 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2023-01-27 20:57:01,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2023-01-27 20:57:01,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:01,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2023-01-27 20:57:01,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:01,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:01,039 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:01,039 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 52 flow. Second operand 8 states and 566 transitions. [2023-01-27 20:57:01,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 47 transitions, 245 flow [2023-01-27 20:57:01,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 47 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:57:01,041 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 125 flow [2023-01-27 20:57:01,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-01-27 20:57:01,042 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 10 predicate places. [2023-01-27 20:57:01,042 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 125 flow [2023-01-27 20:57:01,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:01,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:01,042 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:01,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:57:01,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:01,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:57:01,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:01,252 INFO L85 PathProgramCache]: Analyzing trace with hash 728758898, now seen corresponding path program 2 times [2023-01-27 20:57:01,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:01,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946122706] [2023-01-27 20:57:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:57:01,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:01,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946122706] [2023-01-27 20:57:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946122706] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544947480] [2023-01-27 20:57:01,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:57:01,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:01,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:01,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:01,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:57:01,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:57:01,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:57:01,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:57:01,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:57:01,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:01,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544947480] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:01,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:01,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 6] total 10 [2023-01-27 20:57:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021419963] [2023-01-27 20:57:01,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:57:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:57:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:57:01,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 173 [2023-01-27 20:57:01,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 125 flow. Second operand has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:01,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:01,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 173 [2023-01-27 20:57:01,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:02,027 INFO L130 PetriNetUnfolder]: 91/170 cut-off events. [2023-01-27 20:57:02,027 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-01-27 20:57:02,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 170 events. 91/170 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 483 event pairs, 2 based on Foata normal form. 16/176 useless extension candidates. Maximal degree in co-relation 257. Up to 67 conditions per place. [2023-01-27 20:57:02,030 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 41 selfloop transitions, 26 changer transitions 0/67 dead transitions. [2023-01-27 20:57:02,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 67 transitions, 436 flow [2023-01-27 20:57:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 20:57:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 20:57:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 820 transitions. [2023-01-27 20:57:02,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36460649177412185 [2023-01-27 20:57:02,032 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 820 transitions. [2023-01-27 20:57:02,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 820 transitions. [2023-01-27 20:57:02,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:02,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 820 transitions. [2023-01-27 20:57:02,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.07692307692308) internal successors, (820), 13 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:02,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:02,037 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:02,037 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 125 flow. Second operand 13 states and 820 transitions. [2023-01-27 20:57:02,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 67 transitions, 436 flow [2023-01-27 20:57:02,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 382 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-27 20:57:02,041 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 285 flow [2023-01-27 20:57:02,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=285, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-01-27 20:57:02,043 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 26 predicate places. [2023-01-27 20:57:02,043 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 285 flow [2023-01-27 20:57:02,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:02,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:02,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:02,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 20:57:02,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 20:57:02,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:57:02,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash 793394256, now seen corresponding path program 3 times [2023-01-27 20:57:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:02,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537702135] [2023-01-27 20:57:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:57:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537702135] [2023-01-27 20:57:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537702135] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:02,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600718080] [2023-01-27 20:57:02,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:57:02,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:02,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:02,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:57:02,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:57:02,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:57:02,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 20:57:02,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:02,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:57:03,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600718080] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:03,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:03,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 14 [2023-01-27 20:57:03,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173548381] [2023-01-27 20:57:03,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:03,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 20:57:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 20:57:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-01-27 20:57:03,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-01-27 20:57:03,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 285 flow. Second operand has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:03,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:03,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-01-27 20:57:03,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:03,953 INFO L130 PetriNetUnfolder]: 194/365 cut-off events. [2023-01-27 20:57:03,953 INFO L131 PetriNetUnfolder]: For 838/838 co-relation queries the response was YES. [2023-01-27 20:57:03,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 365 events. 194/365 cut-off events. For 838/838 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1432 event pairs, 4 based on Foata normal form. 10/375 useless extension candidates. Maximal degree in co-relation 1022. Up to 103 conditions per place. [2023-01-27 20:57:03,955 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 50 selfloop transitions, 54 changer transitions 30/134 dead transitions. [2023-01-27 20:57:03,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 1100 flow [2023-01-27 20:57:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-27 20:57:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-27 20:57:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1181 transitions. [2023-01-27 20:57:03,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34132947976878614 [2023-01-27 20:57:03,958 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1181 transitions. [2023-01-27 20:57:03,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1181 transitions. [2023-01-27 20:57:03,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:03,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1181 transitions. [2023-01-27 20:57:03,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.05) internal successors, (1181), 20 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:03,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:03,963 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:03,964 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 285 flow. Second operand 20 states and 1181 transitions. [2023-01-27 20:57:03,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 1100 flow [2023-01-27 20:57:03,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 134 transitions, 1000 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-01-27 20:57:03,969 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 670 flow [2023-01-27 20:57:03,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=670, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-01-27 20:57:03,969 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 45 predicate places. [2023-01-27 20:57:03,969 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 670 flow [2023-01-27 20:57:03,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:03,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:57:03,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:57:03,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:57:04,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:04,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:57:04,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:57:04,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2120211330, now seen corresponding path program 4 times [2023-01-27 20:57:04,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:57:04,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096376425] [2023-01-27 20:57:04,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:57:04,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:57:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:57:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:04,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:57:04,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096376425] [2023-01-27 20:57:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096376425] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:57:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721889035] [2023-01-27 20:57:04,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:57:04,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:04,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:57:04,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:57:04,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:57:04,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:57:04,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:57:04,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 20:57:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:57:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:04,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:57:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:57:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721889035] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:57:05,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:57:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-27 20:57:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026528556] [2023-01-27 20:57:05,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:57:05,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 20:57:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:57:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 20:57:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:57:05,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-01-27 20:57:05,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:05,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:57:05,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-01-27 20:57:05,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:57:05,587 INFO L130 PetriNetUnfolder]: 130/236 cut-off events. [2023-01-27 20:57:05,587 INFO L131 PetriNetUnfolder]: For 761/761 co-relation queries the response was YES. [2023-01-27 20:57:05,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 236 events. 130/236 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 769 event pairs, 0 based on Foata normal form. 19/255 useless extension candidates. Maximal degree in co-relation 1197. Up to 73 conditions per place. [2023-01-27 20:57:05,588 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2023-01-27 20:57:05,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 875 flow [2023-01-27 20:57:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:57:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:57:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2023-01-27 20:57:05,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393063583815029 [2023-01-27 20:57:05,590 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2023-01-27 20:57:05,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2023-01-27 20:57:05,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:57:05,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2023-01-27 20:57:05,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:05,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:05,593 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:05,593 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 670 flow. Second operand 10 states and 587 transitions. [2023-01-27 20:57:05,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 875 flow [2023-01-27 20:57:05,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 693 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-01-27 20:57:05,596 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-01-27 20:57:05,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-01-27 20:57:05,597 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 37 predicate places. [2023-01-27 20:57:05,597 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-01-27 20:57:05,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:57:05,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 20:57:05,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 20:57:05,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 20:57:05,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:57:05,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:57:05,807 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-01-27 20:57:05,810 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:57:05,810 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:57:05,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:57:05 BasicIcfg [2023-01-27 20:57:05,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:57:05,812 INFO L158 Benchmark]: Toolchain (without parser) took 9009.18ms. Allocated memory was 652.2MB in the beginning and 784.3MB in the end (delta: 132.1MB). Free memory was 615.3MB in the beginning and 728.8MB in the end (delta: -113.5MB). Peak memory consumption was 459.3MB. Max. memory is 16.0GB. [2023-01-27 20:57:05,812 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 315.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:57:05,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.65ms. Allocated memory is still 652.2MB. Free memory was 615.3MB in the beginning and 604.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 20:57:05,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.99ms. Allocated memory is still 652.2MB. Free memory was 604.1MB in the beginning and 602.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:57:05,814 INFO L158 Benchmark]: Boogie Preprocessor took 31.92ms. Allocated memory is still 652.2MB. Free memory was 602.7MB in the beginning and 601.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:57:05,814 INFO L158 Benchmark]: RCFGBuilder took 288.36ms. Allocated memory is still 652.2MB. Free memory was 601.3MB in the beginning and 587.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:57:05,814 INFO L158 Benchmark]: TraceAbstraction took 8462.43ms. Allocated memory was 652.2MB in the beginning and 784.3MB in the end (delta: 132.1MB). Free memory was 586.6MB in the beginning and 728.8MB in the end (delta: -142.2MB). Peak memory consumption was 430.0MB. Max. memory is 16.0GB. [2023-01-27 20:57:05,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 315.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 199.65ms. Allocated memory is still 652.2MB. Free memory was 615.3MB in the beginning and 604.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.99ms. Allocated memory is still 652.2MB. Free memory was 604.1MB in the beginning and 602.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.92ms. Allocated memory is still 652.2MB. Free memory was 602.7MB in the beginning and 601.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 288.36ms. Allocated memory is still 652.2MB. Free memory was 601.3MB in the beginning and 587.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 8462.43ms. Allocated memory was 652.2MB in the beginning and 784.3MB in the end (delta: 132.1MB). Free memory was 586.6MB in the beginning and 728.8MB in the end (delta: -142.2MB). Peak memory consumption was 430.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 78 PlacesBefore, 18 PlacesAfterwards, 82 TransitionsBefore, 13 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 81 TotalNumberOfCompositions, 1141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1095, independent: 1089, independent conditional: 0, independent unconditional: 1089, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 617, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1095, independent: 475, independent conditional: 0, independent unconditional: 475, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 617, unknown conditional: 0, unknown unconditional: 617] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 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: 8.4s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 706 IncrementalHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 0 mSDtfsCounter, 706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=670occurred in iteration=5, InterpolantAutomatonStates: 57, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 1809 SizeOfPredicates, 23 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 11/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 20:57:05,826 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 Received shutdown request...