/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/safe012_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:18:23,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:18:23,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:18:23,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:18:23,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:18:23,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:18:23,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:18:23,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:18:23,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:18:23,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:18:23,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:18:23,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:18:23,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:18:23,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:18:23,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:18:23,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:18:23,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:18:23,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:18:23,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:18:23,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:18:23,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:18:23,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:18:23,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:18:23,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:18:23,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:18:23,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:18:23,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:18:23,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:18:23,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:18:23,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:18:23,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:18:23,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:18:23,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:18:23,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:18:23,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:18:23,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:18:23,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:18:23,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:18:23,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:18:23,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:18:23,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:18:23,686 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 18:18:23,707 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:18:23,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:18:23,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:18:23,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:18:23,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:18:23,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:18:23,717 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:18:23,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:18:23,717 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:18:23,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:18:23,718 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:18:23,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:18:23,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:18:23,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:18:23,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:18:23,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:18:23,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:18:23,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:18:24,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:18:24,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:18:24,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:18:24,079 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:18:24,093 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:18:24,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-01-27 18:18:25,472 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:18:25,837 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:18:25,837 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-01-27 18:18:25,855 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677f4220a/424d1a73e7644d4abc765be890502345/FLAG0b3aa20c3 [2023-01-27 18:18:25,878 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677f4220a/424d1a73e7644d4abc765be890502345 [2023-01-27 18:18:25,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:18:25,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:18:25,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:18:25,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:18:25,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:18:25,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:18:25" (1/1) ... [2023-01-27 18:18:25,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ed7f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:25, skipping insertion in model container [2023-01-27 18:18:25,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:18:25" (1/1) ... [2023-01-27 18:18:25,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:18:25,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:18:26,187 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/safe012_tso.i[945,958] [2023-01-27 18:18:26,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:18:26,435 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:18:26,460 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/safe012_tso.i[945,958] [2023-01-27 18:18:26,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:18:26,562 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:18:26,562 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:18:26,567 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:18:26,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26 WrapperNode [2023-01-27 18:18:26,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:18:26,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:18:26,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:18:26,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:18:26,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,649 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-01-27 18:18:26,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:18:26,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:18:26,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:18:26,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:18:26,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,691 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:18:26,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:18:26,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:18:26,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:18:26,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (1/1) ... [2023-01-27 18:18:26,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:18:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:18:26,754 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 18:18:26,784 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 18:18:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:18:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:18:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:18:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:18:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:18:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:18:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:18:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:18:26,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:18:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:18:26,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:18:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:18:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:18:26,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:18:26,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:18:26,811 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 18:18:27,036 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:18:27,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:18:27,333 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:18:27,337 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:18:27,338 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:18:27,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:18:27 BoogieIcfgContainer [2023-01-27 18:18:27,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:18:27,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:18:27,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:18:27,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:18:27,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:18:25" (1/3) ... [2023-01-27 18:18:27,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c93818a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:18:27, skipping insertion in model container [2023-01-27 18:18:27,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:18:26" (2/3) ... [2023-01-27 18:18:27,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c93818a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:18:27, skipping insertion in model container [2023-01-27 18:18:27,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:18:27" (3/3) ... [2023-01-27 18:18:27,345 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-01-27 18:18:27,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:18:27,369 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:18:27,369 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:18:27,447 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:18:27,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-01-27 18:18:27,602 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2023-01-27 18:18:27,602 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:18:27,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-27 18:18:27,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-01-27 18:18:27,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-01-27 18:18:27,621 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:18:27,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-01-27 18:18:27,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-01-27 18:18:27,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-01-27 18:18:27,692 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2023-01-27 18:18:27,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:18:27,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-27 18:18:27,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-27 18:18:30,076 INFO L134 LiptonReduction]: Checked pairs total: 1982 [2023-01-27 18:18:30,077 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-01-27 18:18:30,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:18:30,119 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;@3ebb3fee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:18:30,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:18:30,128 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-27 18:18:30,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:18:30,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:30,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:30,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:30,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1603823166, now seen corresponding path program 1 times [2023-01-27 18:18:30,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:30,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898032643] [2023-01-27 18:18:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:30,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:30,928 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 18:18:30,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:30,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898032643] [2023-01-27 18:18:30,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898032643] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:30,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:30,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:18:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661291966] [2023-01-27 18:18:30,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:30,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:18:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:18:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:18:30,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-01-27 18:18:30,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 18:18:30,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:30,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-01-27 18:18:30,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:31,124 INFO L130 PetriNetUnfolder]: 222/386 cut-off events. [2023-01-27 18:18:31,143 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-27 18:18:31,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 386 events. 222/386 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1636 event pairs, 69 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 774. Up to 340 conditions per place. [2023-01-27 18:18:31,149 INFO L137 encePairwiseOnDemand]: 140/145 looper letters, 21 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-01-27 18:18:31,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 115 flow [2023-01-27 18:18:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:18:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:18:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-01-27 18:18:31,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2023-01-27 18:18:31,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-01-27 18:18:31,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-01-27 18:18:31,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:31,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-01-27 18:18:31,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 18:18:31,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 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 18:18:31,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 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 18:18:31,180 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 246 transitions. [2023-01-27 18:18:31,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 115 flow [2023-01-27 18:18:31,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:18:31,183 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-01-27 18:18:31,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-01-27 18:18:31,197 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-27 18:18:31,197 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-01-27 18:18:31,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 18:18:31,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:31,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:31,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:18:31,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:31,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1821090019, now seen corresponding path program 1 times [2023-01-27 18:18:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105991361] [2023-01-27 18:18:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:31,526 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 18:18:31,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:31,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105991361] [2023-01-27 18:18:31,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105991361] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:31,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:31,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:18:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680745211] [2023-01-27 18:18:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:31,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:18:31,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:18:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:18:31,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 145 [2023-01-27 18:18:31,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 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 18:18:31,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:31,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 145 [2023-01-27 18:18:31,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:31,618 INFO L130 PetriNetUnfolder]: 143/265 cut-off events. [2023-01-27 18:18:31,619 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-01-27 18:18:31,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 265 events. 143/265 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1080 event pairs, 53 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 613. Up to 154 conditions per place. [2023-01-27 18:18:31,622 INFO L137 encePairwiseOnDemand]: 142/145 looper letters, 17 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-01-27 18:18:31,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 107 flow [2023-01-27 18:18:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:18:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:18:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-01-27 18:18:31,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5770114942528736 [2023-01-27 18:18:31,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-01-27 18:18:31,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-01-27 18:18:31,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:31,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-01-27 18:18:31,663 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 18:18:31,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 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 18:18:31,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 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 18:18:31,665 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 251 transitions. [2023-01-27 18:18:31,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 107 flow [2023-01-27 18:18:31,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:18:31,666 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 67 flow [2023-01-27 18:18:31,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-01-27 18:18:31,667 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-01-27 18:18:31,667 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2023-01-27 18:18:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 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 18:18:31,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:31,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:31,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:18:31,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:31,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1821089988, now seen corresponding path program 1 times [2023-01-27 18:18:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:31,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151695771] [2023-01-27 18:18:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:31,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:31,891 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 18:18:31,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151695771] [2023-01-27 18:18:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151695771] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:31,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:31,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:18:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46814812] [2023-01-27 18:18:31,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:31,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:31,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:31,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-01-27 18:18:31,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 18:18:31,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:31,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-01-27 18:18:31,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:31,968 INFO L130 PetriNetUnfolder]: 188/334 cut-off events. [2023-01-27 18:18:31,969 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-01-27 18:18:31,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 334 events. 188/334 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1363 event pairs, 91 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 807. Up to 265 conditions per place. [2023-01-27 18:18:31,987 INFO L137 encePairwiseOnDemand]: 142/145 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-01-27 18:18:31,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 137 flow [2023-01-27 18:18:31,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:18:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:18:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-01-27 18:18:31,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609195402298851 [2023-01-27 18:18:31,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-01-27 18:18:31,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-01-27 18:18:31,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:31,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-01-27 18:18:31,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 18:18:31,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 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 18:18:31,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 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 18:18:31,991 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 3 states and 244 transitions. [2023-01-27 18:18:31,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 137 flow [2023-01-27 18:18:31,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:18:31,993 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 72 flow [2023-01-27 18:18:31,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2023-01-27 18:18:31,994 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-01-27 18:18:31,996 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 72 flow [2023-01-27 18:18:31,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 18:18:31,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:31,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:31,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:18:31,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:31,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:31,997 INFO L85 PathProgramCache]: Analyzing trace with hash -619216323, now seen corresponding path program 1 times [2023-01-27 18:18:31,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:31,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478748451] [2023-01-27 18:18:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:31,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:32,226 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 18:18:32,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:32,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478748451] [2023-01-27 18:18:32,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478748451] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:32,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:32,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:18:32,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306638961] [2023-01-27 18:18:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:32,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:32,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:32,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:32,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:32,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-01-27 18:18:32,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 18:18:32,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:32,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-01-27 18:18:32,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:32,364 INFO L130 PetriNetUnfolder]: 341/582 cut-off events. [2023-01-27 18:18:32,365 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2023-01-27 18:18:32,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 582 events. 341/582 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2618 event pairs, 63 based on Foata normal form. 24/598 useless extension candidates. Maximal degree in co-relation 1438. Up to 221 conditions per place. [2023-01-27 18:18:32,374 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 34 selfloop transitions, 11 changer transitions 2/48 dead transitions. [2023-01-27 18:18:32,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 259 flow [2023-01-27 18:18:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:18:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:18:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2023-01-27 18:18:32,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544827586206896 [2023-01-27 18:18:32,376 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2023-01-27 18:18:32,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2023-01-27 18:18:32,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:32,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2023-01-27 18:18:32,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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 18:18:32,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 18:18:32,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 18:18:32,382 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 72 flow. Second operand 5 states and 402 transitions. [2023-01-27 18:18:32,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 259 flow [2023-01-27 18:18:32,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:18:32,397 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 149 flow [2023-01-27 18:18:32,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-01-27 18:18:32,398 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-01-27 18:18:32,398 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 149 flow [2023-01-27 18:18:32,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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 18:18:32,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:32,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:32,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:18:32,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:32,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash -619561353, now seen corresponding path program 2 times [2023-01-27 18:18:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:32,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972131588] [2023-01-27 18:18:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:32,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:32,589 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 18:18:32,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:32,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972131588] [2023-01-27 18:18:32,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972131588] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:32,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:32,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:18:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142283347] [2023-01-27 18:18:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:32,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:18:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:18:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:18:32,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-01-27 18:18:32,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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 18:18:32,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:32,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-01-27 18:18:32,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:32,691 INFO L130 PetriNetUnfolder]: 343/602 cut-off events. [2023-01-27 18:18:32,691 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2023-01-27 18:18:32,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1771 conditions, 602 events. 343/602 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2772 event pairs, 129 based on Foata normal form. 24/622 useless extension candidates. Maximal degree in co-relation 1754. Up to 232 conditions per place. [2023-01-27 18:18:32,694 INFO L137 encePairwiseOnDemand]: 141/145 looper letters, 24 selfloop transitions, 5 changer transitions 8/38 dead transitions. [2023-01-27 18:18:32,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 255 flow [2023-01-27 18:18:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:18:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:18:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-01-27 18:18:32,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2023-01-27 18:18:32,697 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-01-27 18:18:32,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-01-27 18:18:32,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:32,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-01-27 18:18:32,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 18:18:32,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 18:18:32,699 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 18:18:32,699 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 149 flow. Second operand 4 states and 316 transitions. [2023-01-27 18:18:32,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 255 flow [2023-01-27 18:18:32,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 253 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 18:18:32,715 INFO L231 Difference]: Finished difference. Result has 40 places, 21 transitions, 126 flow [2023-01-27 18:18:32,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2023-01-27 18:18:32,716 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-01-27 18:18:32,716 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 21 transitions, 126 flow [2023-01-27 18:18:32,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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 18:18:32,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:32,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:32,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:18:32,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:32,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:32,718 INFO L85 PathProgramCache]: Analyzing trace with hash -689474346, now seen corresponding path program 1 times [2023-01-27 18:18:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:32,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940779442] [2023-01-27 18:18:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:32,974 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 18:18:32,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940779442] [2023-01-27 18:18:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940779442] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:32,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:32,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:18:32,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665012067] [2023-01-27 18:18:32,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:32,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:18:32,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:32,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:18:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:18:32,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-01-27 18:18:32,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 21 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 18:18:32,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:32,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-01-27 18:18:32,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:33,090 INFO L130 PetriNetUnfolder]: 212/367 cut-off events. [2023-01-27 18:18:33,091 INFO L131 PetriNetUnfolder]: For 948/952 co-relation queries the response was YES. [2023-01-27 18:18:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 367 events. 212/367 cut-off events. For 948/952 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1255 event pairs, 94 based on Foata normal form. 18/380 useless extension candidates. Maximal degree in co-relation 1172. Up to 187 conditions per place. [2023-01-27 18:18:33,092 INFO L137 encePairwiseOnDemand]: 141/145 looper letters, 18 selfloop transitions, 3 changer transitions 9/31 dead transitions. [2023-01-27 18:18:33,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 217 flow [2023-01-27 18:18:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:18:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:18:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-01-27 18:18:33,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379310344827586 [2023-01-27 18:18:33,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-01-27 18:18:33,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-01-27 18:18:33,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:33,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-01-27 18:18:33,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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 18:18:33,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 18:18:33,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 18:18:33,099 INFO L175 Difference]: Start difference. First operand has 40 places, 21 transitions, 126 flow. Second operand 4 states and 312 transitions. [2023-01-27 18:18:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 217 flow [2023-01-27 18:18:33,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 192 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-27 18:18:33,113 INFO L231 Difference]: Finished difference. Result has 39 places, 17 transitions, 90 flow [2023-01-27 18:18:33,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2023-01-27 18:18:33,115 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-01-27 18:18:33,115 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 17 transitions, 90 flow [2023-01-27 18:18:33,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 18:18:33,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:33,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:18:33,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:33,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1265018634, now seen corresponding path program 1 times [2023-01-27 18:18:33,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528282903] [2023-01-27 18:18:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:33,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:33,368 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 18:18:33,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528282903] [2023-01-27 18:18:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528282903] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:33,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:18:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010830146] [2023-01-27 18:18:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:33,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:33,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:33,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:33,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-01-27 18:18:33,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 17 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 18:18:33,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:33,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-01-27 18:18:33,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:33,416 INFO L130 PetriNetUnfolder]: 56/126 cut-off events. [2023-01-27 18:18:33,416 INFO L131 PetriNetUnfolder]: For 633/641 co-relation queries the response was YES. [2023-01-27 18:18:33,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 126 events. 56/126 cut-off events. For 633/641 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 399 event pairs, 23 based on Foata normal form. 10/135 useless extension candidates. Maximal degree in co-relation 416. Up to 73 conditions per place. [2023-01-27 18:18:33,417 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 17 selfloop transitions, 4 changer transitions 12/36 dead transitions. [2023-01-27 18:18:33,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 238 flow [2023-01-27 18:18:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:18:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:18:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-01-27 18:18:33,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2023-01-27 18:18:33,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-01-27 18:18:33,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-01-27 18:18:33,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:33,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-01-27 18:18:33,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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 18:18:33,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 18:18:33,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 18:18:33,420 INFO L175 Difference]: Start difference. First operand has 39 places, 17 transitions, 90 flow. Second operand 5 states and 400 transitions. [2023-01-27 18:18:33,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 238 flow [2023-01-27 18:18:33,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 173 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-01-27 18:18:33,423 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 94 flow [2023-01-27 18:18:33,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-01-27 18:18:33,423 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-01-27 18:18:33,423 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 94 flow [2023-01-27 18:18:33,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 18:18:33,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:33,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:33,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:18:33,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:33,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash 829629094, now seen corresponding path program 1 times [2023-01-27 18:18:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334728838] [2023-01-27 18:18:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:33,551 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 18:18:33,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:33,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334728838] [2023-01-27 18:18:33,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334728838] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:33,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:33,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:18:33,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226182907] [2023-01-27 18:18:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:33,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:18:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:18:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:18:33,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-01-27 18:18:33,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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 18:18:33,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:33,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-01-27 18:18:33,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:33,614 INFO L130 PetriNetUnfolder]: 32/83 cut-off events. [2023-01-27 18:18:33,614 INFO L131 PetriNetUnfolder]: For 226/250 co-relation queries the response was YES. [2023-01-27 18:18:33,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 83 events. 32/83 cut-off events. For 226/250 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 217 event pairs, 5 based on Foata normal form. 14/95 useless extension candidates. Maximal degree in co-relation 295. Up to 48 conditions per place. [2023-01-27 18:18:33,614 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 18 selfloop transitions, 7 changer transitions 10/38 dead transitions. [2023-01-27 18:18:33,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 248 flow [2023-01-27 18:18:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:18:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:18:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 475 transitions. [2023-01-27 18:18:33,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2023-01-27 18:18:33,616 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 475 transitions. [2023-01-27 18:18:33,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 475 transitions. [2023-01-27 18:18:33,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:33,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 475 transitions. [2023-01-27 18:18:33,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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 18:18:33,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 18:18:33,619 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 18:18:33,619 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 94 flow. Second operand 6 states and 475 transitions. [2023-01-27 18:18:33,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 248 flow [2023-01-27 18:18:33,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:18:33,625 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 144 flow [2023-01-27 18:18:33,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2023-01-27 18:18:33,626 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-01-27 18:18:33,626 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 144 flow [2023-01-27 18:18:33,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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 18:18:33,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:33,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:33,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:18:33,627 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:33,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:33,627 INFO L85 PathProgramCache]: Analyzing trace with hash -51683589, now seen corresponding path program 1 times [2023-01-27 18:18:33,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:33,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160061470] [2023-01-27 18:18:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:33,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:33,956 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 18:18:33,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:33,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160061470] [2023-01-27 18:18:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160061470] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:33,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:18:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720827244] [2023-01-27 18:18:33,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:18:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:18:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:18:33,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 145 [2023-01-27 18:18:33,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 18:18:33,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:33,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 145 [2023-01-27 18:18:33,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:34,019 INFO L130 PetriNetUnfolder]: 17/52 cut-off events. [2023-01-27 18:18:34,019 INFO L131 PetriNetUnfolder]: For 193/214 co-relation queries the response was YES. [2023-01-27 18:18:34,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 52 events. 17/52 cut-off events. For 193/214 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 2 based on Foata normal form. 12/62 useless extension candidates. Maximal degree in co-relation 206. Up to 28 conditions per place. [2023-01-27 18:18:34,019 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 15 selfloop transitions, 10 changer transitions 5/33 dead transitions. [2023-01-27 18:18:34,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 259 flow [2023-01-27 18:18:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:18:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:18:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 543 transitions. [2023-01-27 18:18:34,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349753694581281 [2023-01-27 18:18:34,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 543 transitions. [2023-01-27 18:18:34,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 543 transitions. [2023-01-27 18:18:34,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:34,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 543 transitions. [2023-01-27 18:18:34,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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 18:18:34,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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 18:18:34,024 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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 18:18:34,024 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 144 flow. Second operand 7 states and 543 transitions. [2023-01-27 18:18:34,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 259 flow [2023-01-27 18:18:34,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 219 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-01-27 18:18:34,025 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 142 flow [2023-01-27 18:18:34,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2023-01-27 18:18:34,026 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-27 18:18:34,026 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 142 flow [2023-01-27 18:18:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 18:18:34,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:18:34,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:34,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:18:34,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:18:34,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:18:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash -642093203, now seen corresponding path program 1 times [2023-01-27 18:18:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:18:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850253199] [2023-01-27 18:18:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:18:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:18:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:18:34,171 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 18:18:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:18:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850253199] [2023-01-27 18:18:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850253199] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:18:34,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:18:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:18:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495033454] [2023-01-27 18:18:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:18:34,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:18:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:18:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:18:34,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:18:34,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 145 [2023-01-27 18:18:34,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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 18:18:34,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:18:34,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 145 [2023-01-27 18:18:34,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:18:34,219 INFO L130 PetriNetUnfolder]: 18/52 cut-off events. [2023-01-27 18:18:34,220 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-01-27 18:18:34,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 52 events. 18/52 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 3 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 192. Up to 27 conditions per place. [2023-01-27 18:18:34,220 INFO L137 encePairwiseOnDemand]: 140/145 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-01-27 18:18:34,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 28 transitions, 216 flow [2023-01-27 18:18:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:18:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:18:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-01-27 18:18:34,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158620689655172 [2023-01-27 18:18:34,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-01-27 18:18:34,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-01-27 18:18:34,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:18:34,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-01-27 18:18:34,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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 18:18:34,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 18:18:34,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 18:18:34,237 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 142 flow. Second operand 5 states and 374 transitions. [2023-01-27 18:18:34,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 28 transitions, 216 flow [2023-01-27 18:18:34,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 172 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-01-27 18:18:34,238 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-01-27 18:18:34,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-01-27 18:18:34,239 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-01-27 18:18:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-01-27 18:18:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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 18:18:34,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:18:34,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:18:34,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:18:34,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 18:18:34,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:18:34,242 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:18:34,245 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:18:34,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:18:34,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:18:34 BasicIcfg [2023-01-27 18:18:34,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:18:34,248 INFO L158 Benchmark]: Toolchain (without parser) took 8367.98ms. Allocated memory was 438.3MB in the beginning and 526.4MB in the end (delta: 88.1MB). Free memory was 385.5MB in the beginning and 226.8MB in the end (delta: 158.7MB). Peak memory consumption was 248.1MB. Max. memory is 16.0GB. [2023-01-27 18:18:34,248 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 310.4MB. Free memory is still 258.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:18:34,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.24ms. Allocated memory is still 438.3MB. Free memory was 385.2MB in the beginning and 365.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 18:18:34,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.51ms. Allocated memory is still 438.3MB. Free memory was 365.3MB in the beginning and 363.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:18:34,249 INFO L158 Benchmark]: Boogie Preprocessor took 50.93ms. Allocated memory is still 438.3MB. Free memory was 363.2MB in the beginning and 361.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:18:34,249 INFO L158 Benchmark]: RCFGBuilder took 638.29ms. Allocated memory is still 438.3MB. Free memory was 361.8MB in the beginning and 347.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 18:18:34,256 INFO L158 Benchmark]: TraceAbstraction took 6907.34ms. Allocated memory was 438.3MB in the beginning and 526.4MB in the end (delta: 88.1MB). Free memory was 347.1MB in the beginning and 226.8MB in the end (delta: 120.3MB). Peak memory consumption was 210.4MB. Max. memory is 16.0GB. [2023-01-27 18:18:34,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 310.4MB. Free memory is still 258.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 685.24ms. Allocated memory is still 438.3MB. Free memory was 385.2MB in the beginning and 365.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.51ms. Allocated memory is still 438.3MB. Free memory was 365.3MB in the beginning and 363.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.93ms. Allocated memory is still 438.3MB. Free memory was 363.2MB in the beginning and 361.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 638.29ms. Allocated memory is still 438.3MB. Free memory was 361.8MB in the beginning and 347.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6907.34ms. Allocated memory was 438.3MB in the beginning and 526.4MB in the end (delta: 88.1MB). Free memory was 347.1MB in the beginning and 226.8MB in the end (delta: 120.3MB). Peak memory consumption was 210.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 1982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1243, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1243, independent: 611, independent conditional: 0, independent unconditional: 611, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, 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 7 procedures, 109 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 377 IncrementalHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 9 mSDtfsCounter, 377 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=4, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 471 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 18:18:34,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...