/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/pthread-wmm/safe033_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:21:34,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:21:34,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:21:34,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:21:34,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:21:34,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:21:34,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:21:34,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:21:34,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:21:34,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:21:34,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:21:34,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:21:34,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:21:34,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:21:34,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:21:34,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:21:34,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:21:34,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:21:34,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:21:34,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:21:34,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:21:34,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:21:34,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:21:34,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:21:34,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:21:34,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:21:34,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:21:34,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:21:34,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:21:34,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:21:34,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:21:34,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:21:34,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:21:34,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:21:34,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:21:34,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:21:34,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:21:34,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:21:34,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:21:34,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:21:34,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:21:34,442 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 18:21:34,479 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:21:34,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:21:34,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:21:34,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:21:34,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:21:34,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:21:34,482 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:21:34,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:21:34,482 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:21:34,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:21:34,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:21:34,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:21:34,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:21:34,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:21:34,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:21:34,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:21:34,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:21:34,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:21:34,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:21:34,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:21:34,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:21:34,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:21:34,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:21:34,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:21:34,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:21:34,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:21:34,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:21:34,793 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:21:34,794 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:21:34,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-01-27 18:21:36,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:21:36,783 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:21:36,783 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-01-27 18:21:36,791 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2886364e7/eb2aa3255d3a4feebdb968f31d58d480/FLAGe2ecb8cb0 [2023-01-27 18:21:36,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2886364e7/eb2aa3255d3a4feebdb968f31d58d480 [2023-01-27 18:21:36,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:21:36,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:21:36,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:21:36,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:21:36,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:21:36,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:21:36" (1/1) ... [2023-01-27 18:21:36,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72cf0bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:36, skipping insertion in model container [2023-01-27 18:21:36,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:21:36" (1/1) ... [2023-01-27 18:21:36,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:21:36,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:21:37,055 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2023-01-27 18:21:37,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:21:37,291 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:21:37,300 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2023-01-27 18:21:37,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:21:37,370 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:21:37,370 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:21:37,375 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:21:37,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37 WrapperNode [2023-01-27 18:21:37,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:21:37,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:21:37,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:21:37,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:21:37,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,477 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-01-27 18:21:37,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:21:37,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:21:37,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:21:37,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:21:37,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,491 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:21:37,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:21:37,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:21:37,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:21:37,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (1/1) ... [2023-01-27 18:21:37,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:21:37,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:21:37,561 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 18:21:37,583 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 18:21:37,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:21:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:21:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:21:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:21:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:21:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:21:37,624 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:21:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:21:37,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:21:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:21:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:21:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:21:37,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:21:37,627 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 18:21:37,858 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:21:37,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:21:38,026 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:21:38,031 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:21:38,031 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:21:38,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:21:38 BoogieIcfgContainer [2023-01-27 18:21:38,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:21:38,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:21:38,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:21:38,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:21:38,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:21:36" (1/3) ... [2023-01-27 18:21:38,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743a5666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:21:38, skipping insertion in model container [2023-01-27 18:21:38,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:21:37" (2/3) ... [2023-01-27 18:21:38,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743a5666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:21:38, skipping insertion in model container [2023-01-27 18:21:38,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:21:38" (3/3) ... [2023-01-27 18:21:38,067 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2023-01-27 18:21:38,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:21:38,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:21:38,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:21:38,141 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:21:38,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2023-01-27 18:21:38,293 INFO L130 PetriNetUnfolder]: 2/65 cut-off events. [2023-01-27 18:21:38,293 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:38,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-01-27 18:21:38,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2023-01-27 18:21:38,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2023-01-27 18:21:38,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:21:38,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 116 flow [2023-01-27 18:21:38,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 116 flow [2023-01-27 18:21:38,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 116 flow [2023-01-27 18:21:38,369 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2023-01-27 18:21:38,369 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:38,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-27 18:21:38,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-01-27 18:21:41,900 INFO L134 LiptonReduction]: Checked pairs total: 1039 [2023-01-27 18:21:41,900 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-01-27 18:21:41,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:21:41,920 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;@5d19c137, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:21:41,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 18:21:41,923 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-27 18:21:41,923 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:21:41,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:41,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 18:21:41,924 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 18:21:41,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1655653943, now seen corresponding path program 1 times [2023-01-27 18:21:41,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:41,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764829729] [2023-01-27 18:21:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:41,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:42,463 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 18:21:42,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:42,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764829729] [2023-01-27 18:21:42,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764829729] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:42,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:42,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:21:42,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644184423] [2023-01-27 18:21:42,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:42,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:21:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:21:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:21:42,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-01-27 18:21:42,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 18:21:42,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:42,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-01-27 18:21:42,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:42,581 INFO L130 PetriNetUnfolder]: 40/87 cut-off events. [2023-01-27 18:21:42,581 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:21:42,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 87 events. 40/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 262 event pairs, 14 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 170. Up to 74 conditions per place. [2023-01-27 18:21:42,587 INFO L137 encePairwiseOnDemand]: 111/116 looper letters, 14 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-01-27 18:21:42,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 79 flow [2023-01-27 18:21:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:21:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:21:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-01-27 18:21:42,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2023-01-27 18:21:42,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-01-27 18:21:42,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-01-27 18:21:42,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:42,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-01-27 18:21:42,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 18:21:42,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 18:21:42,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 18:21:42,615 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 194 transitions. [2023-01-27 18:21:42,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 79 flow [2023-01-27 18:21:42,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:42,635 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2023-01-27 18:21:42,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-01-27 18:21:42,639 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-01-27 18:21:42,640 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2023-01-27 18:21:42,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 18:21:42,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:42,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:21:42,640 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 18:21:42,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash 214334654, now seen corresponding path program 1 times [2023-01-27 18:21:42,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:42,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413862654] [2023-01-27 18:21:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:42,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:42,951 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 18:21:42,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413862654] [2023-01-27 18:21:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413862654] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:42,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:42,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:21:42,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317308847] [2023-01-27 18:21:42,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:42,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:21:42,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:42,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:21:42,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:21:42,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-01-27 18:21:42,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 18:21:42,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:42,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-01-27 18:21:42,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:43,002 INFO L130 PetriNetUnfolder]: 18/49 cut-off events. [2023-01-27 18:21:43,002 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 18:21:43,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 49 events. 18/49 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 6 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 117. Up to 32 conditions per place. [2023-01-27 18:21:43,003 INFO L137 encePairwiseOnDemand]: 112/116 looper letters, 14 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2023-01-27 18:21:43,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 97 flow [2023-01-27 18:21:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:21:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:21:43,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-01-27 18:21:43,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2023-01-27 18:21:43,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-01-27 18:21:43,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-01-27 18:21:43,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:43,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-01-27 18:21:43,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 18:21:43,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 18:21:43,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 18:21:43,011 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 191 transitions. [2023-01-27 18:21:43,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 97 flow [2023-01-27 18:21:43,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:21:43,012 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 63 flow [2023-01-27 18:21:43,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-01-27 18:21:43,012 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-27 18:21:43,012 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 63 flow [2023-01-27 18:21:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 18:21:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:21:43,013 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 18:21:43,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash 280240383, now seen corresponding path program 1 times [2023-01-27 18:21:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292377819] [2023-01-27 18:21:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:43,176 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 18:21:43,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292377819] [2023-01-27 18:21:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292377819] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:43,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:43,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:21:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459182091] [2023-01-27 18:21:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:43,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:21:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:21:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:21:43,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-01-27 18:21:43,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 18:21:43,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:43,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-01-27 18:21:43,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:43,229 INFO L130 PetriNetUnfolder]: 9/31 cut-off events. [2023-01-27 18:21:43,229 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-27 18:21:43,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 31 events. 9/31 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 3 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 84. Up to 13 conditions per place. [2023-01-27 18:21:43,233 INFO L137 encePairwiseOnDemand]: 112/116 looper letters, 12 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-01-27 18:21:43,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 109 flow [2023-01-27 18:21:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:21:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:21:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-01-27 18:21:43,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366379310344828 [2023-01-27 18:21:43,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-01-27 18:21:43,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-01-27 18:21:43,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:43,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-01-27 18:21:43,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 18:21:43,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 18:21:43,241 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 18:21:43,241 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 63 flow. Second operand 4 states and 249 transitions. [2023-01-27 18:21:43,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 109 flow [2023-01-27 18:21:43,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 104 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 18:21:43,244 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 74 flow [2023-01-27 18:21:43,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-01-27 18:21:43,247 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-01-27 18:21:43,265 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 74 flow [2023-01-27 18:21:43,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 18:21:43,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:43,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:43,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:21:43,266 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 18:21:43,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:43,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1498754901, now seen corresponding path program 1 times [2023-01-27 18:21:43,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:43,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434272727] [2023-01-27 18:21:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:43,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:43,488 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 18:21:43,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:43,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434272727] [2023-01-27 18:21:43,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434272727] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:21:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293917968] [2023-01-27 18:21:43,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:21:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:21:43,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:21:43,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 116 [2023-01-27 18:21:43,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 18:21:43,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:43,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 116 [2023-01-27 18:21:43,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:43,525 INFO L130 PetriNetUnfolder]: 10/40 cut-off events. [2023-01-27 18:21:43,525 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-01-27 18:21:43,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 40 events. 10/40 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 6 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 121. Up to 28 conditions per place. [2023-01-27 18:21:43,526 INFO L137 encePairwiseOnDemand]: 113/116 looper letters, 12 selfloop transitions, 2 changer transitions 6/21 dead transitions. [2023-01-27 18:21:43,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 148 flow [2023-01-27 18:21:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:21:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:21:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2023-01-27 18:21:43,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2023-01-27 18:21:43,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2023-01-27 18:21:43,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2023-01-27 18:21:43,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:43,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2023-01-27 18:21:43,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 18:21:43,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 18:21:43,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 18:21:43,537 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 74 flow. Second operand 3 states and 190 transitions. [2023-01-27 18:21:43,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 148 flow [2023-01-27 18:21:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 130 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 18:21:43,540 INFO L231 Difference]: Finished difference. Result has 26 places, 14 transitions, 64 flow [2023-01-27 18:21:43,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2023-01-27 18:21:43,541 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-01-27 18:21:43,541 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 64 flow [2023-01-27 18:21:43,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 18:21:43,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:21:43,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:21:43,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:21:43,542 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 18:21:43,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:21:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1912696489, now seen corresponding path program 2 times [2023-01-27 18:21:43,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:21:43,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046075723] [2023-01-27 18:21:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:21:43,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:21:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:21:43,769 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 18:21:43,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:21:43,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046075723] [2023-01-27 18:21:43,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046075723] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:21:43,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:21:43,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:21:43,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726415055] [2023-01-27 18:21:43,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:21:43,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:21:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:21:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:21:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:21:43,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 116 [2023-01-27 18:21:43,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 18:21:43,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:21:43,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 116 [2023-01-27 18:21:43,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:21:43,852 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-01-27 18:21:43,852 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-27 18:21:43,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 17 events. 3/17 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 1 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 52. Up to 10 conditions per place. [2023-01-27 18:21:43,852 INFO L137 encePairwiseOnDemand]: 111/116 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-01-27 18:21:43,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 14 transitions, 94 flow [2023-01-27 18:21:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:21:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:21:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 283 transitions. [2023-01-27 18:21:43,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879310344827586 [2023-01-27 18:21:43,854 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 283 transitions. [2023-01-27 18:21:43,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 283 transitions. [2023-01-27 18:21:43,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:21:43,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 283 transitions. [2023-01-27 18:21:43,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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 18:21:43,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 18:21:43,856 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 18:21:43,856 INFO L175 Difference]: Start difference. First operand has 26 places, 14 transitions, 64 flow. Second operand 5 states and 283 transitions. [2023-01-27 18:21:43,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 14 transitions, 94 flow [2023-01-27 18:21:43,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 14 transitions, 82 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 18:21:43,865 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-01-27 18:21:43,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-01-27 18:21:43,865 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-01-27 18:21:43,866 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-01-27 18:21:43,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 18:21:43,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 18:21:43,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 18:21:43,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 18:21:43,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:21:43,868 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-01-27 18:21:43,870 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:21:43,871 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:21:43,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:21:43 BasicIcfg [2023-01-27 18:21:43,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:21:43,877 INFO L158 Benchmark]: Toolchain (without parser) took 7072.66ms. Allocated memory was 362.8MB in the beginning and 463.5MB in the end (delta: 100.7MB). Free memory was 308.3MB in the beginning and 193.8MB in the end (delta: 114.5MB). Peak memory consumption was 218.0MB. Max. memory is 16.0GB. [2023-01-27 18:21:43,877 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 362.8MB. Free memory is still 311.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:21:43,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.17ms. Allocated memory is still 362.8MB. Free memory was 308.3MB in the beginning and 288.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 18:21:43,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.24ms. Allocated memory is still 362.8MB. Free memory was 288.5MB in the beginning and 286.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:21:43,883 INFO L158 Benchmark]: Boogie Preprocessor took 20.25ms. Allocated memory is still 362.8MB. Free memory was 286.4MB in the beginning and 284.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:21:43,885 INFO L158 Benchmark]: RCFGBuilder took 534.06ms. Allocated memory is still 362.8MB. Free memory was 284.9MB in the beginning and 271.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 18:21:43,886 INFO L158 Benchmark]: TraceAbstraction took 5815.93ms. Allocated memory is still 463.5MB. Free memory was 429.9MB in the beginning and 193.8MB in the end (delta: 236.1MB). Peak memory consumption was 234.8MB. Max. memory is 16.0GB. [2023-01-27 18:21:43,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 362.8MB. Free memory is still 311.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 570.17ms. Allocated memory is still 362.8MB. Free memory was 308.3MB in the beginning and 288.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 96.24ms. Allocated memory is still 362.8MB. Free memory was 288.5MB in the beginning and 286.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.25ms. Allocated memory is still 362.8MB. Free memory was 286.4MB in the beginning and 284.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 534.06ms. Allocated memory is still 362.8MB. Free memory was 284.9MB in the beginning and 271.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5815.93ms. Allocated memory is still 463.5MB. Free memory was 429.9MB in the beginning and 193.8MB in the end (delta: 236.1MB). Peak memory consumption was 234.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 61 PlacesBefore, 19 PlacesAfterwards, 55 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 1039 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 585, independent: 520, independent conditional: 0, independent unconditional: 520, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 312, independent: 290, independent conditional: 0, independent unconditional: 290, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 585, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 312, unknown conditional: 0, unknown unconditional: 312] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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, 82 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: 5.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 3 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=3, InterpolantAutomatonStates: 18, 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, 1.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 18:21:43,919 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...