/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:02:08,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:02:08,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:02:08,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:02:08,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:02:08,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:02:08,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:02:08,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:02:08,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:02:08,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:02:08,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:02:08,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:02:08,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:02:08,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:02:08,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:02:08,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:02:08,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:02:08,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:02:08,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:02:08,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:02:08,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:02:08,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:02:08,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:02:08,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:02:08,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:02:08,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:02:08,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:02:08,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:02:08,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:02:08,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:02:08,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:02:08,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:02:08,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:02:08,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:02:08,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:02:08,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:02:08,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:02:08,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:02:08,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:02:08,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:02:08,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:02:08,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:02:08,978 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:02:08,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:02:08,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:02:08,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:02:08,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:02:08,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:02:08,980 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:02:08,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:02:08,980 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:02:08,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:02:08,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:02:08,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:02:08,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:02:08,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:02:08,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:02:08,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:02:08,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:08,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:02:08,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:02:08,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:02:08,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:02:08,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:02:08,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:02:08,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:02:08,984 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:02:09,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:02:09,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:02:09,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:02:09,240 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:02:09,240 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:02:09,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-01-28 07:02:10,424 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:02:10,616 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:02:10,617 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-01-28 07:02:10,628 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37cfcabd/3fad8f3681474eac9a2da6d81e29a79d/FLAG5b154928b [2023-01-28 07:02:10,641 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37cfcabd/3fad8f3681474eac9a2da6d81e29a79d [2023-01-28 07:02:10,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:02:10,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:02:10,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:10,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:02:10,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:02:10,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:10" (1/1) ... [2023-01-28 07:02:10,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57693b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:10, skipping insertion in model container [2023-01-28 07:02:10,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:02:10" (1/1) ... [2023-01-28 07:02:10,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:02:10,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:02:10,814 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/safe017_tso.i[945,958] [2023-01-28 07:02:10,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:10,937 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:02:10,957 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/safe017_tso.i[945,958] [2023-01-28 07:02:10,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:02:11,010 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:11,011 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:02:11,016 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:02:11,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11 WrapperNode [2023-01-28 07:02:11,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:02:11,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:11,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:02:11,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:02:11,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,060 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-01-28 07:02:11,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:02:11,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:02:11,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:02:11,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:02:11,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:02:11,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:02:11,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:02:11,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:02:11,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (1/1) ... [2023-01-28 07:02:11,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:02:11,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:02:11,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:02:11,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 07:02:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:02:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:02:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:02:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:02:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:02:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:02:11,183 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:02:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:02:11,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:02:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:02:11,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:02:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:02:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:02:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:02:11,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:02:11,186 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:02:11,365 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:02:11,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:02:11,517 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:02:11,524 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:02:11,524 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:02:11,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:11 BoogieIcfgContainer [2023-01-28 07:02:11,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:02:11,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:02:11,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:02:11,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:02:11,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:02:10" (1/3) ... [2023-01-28 07:02:11,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395d9502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:11, skipping insertion in model container [2023-01-28 07:02:11,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:02:11" (2/3) ... [2023-01-28 07:02:11,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395d9502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:02:11, skipping insertion in model container [2023-01-28 07:02:11,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:02:11" (3/3) ... [2023-01-28 07:02:11,536 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2023-01-28 07:02:11,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:02:11,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:02:11,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:02:11,602 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:02:11,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2023-01-28 07:02:11,674 INFO L130 PetriNetUnfolder]: 2/79 cut-off events. [2023-01-28 07:02:11,674 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:11,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-28 07:02:11,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2023-01-28 07:02:11,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2023-01-28 07:02:11,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:02:11,709 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 67 transitions, 143 flow [2023-01-28 07:02:11,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 67 transitions, 143 flow [2023-01-28 07:02:11,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 67 transitions, 143 flow [2023-01-28 07:02:11,730 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2023-01-28 07:02:11,730 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:11,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 1/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-01-28 07:02:11,733 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-01-28 07:02:13,404 INFO L134 LiptonReduction]: Checked pairs total: 1517 [2023-01-28 07:02:13,404 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-01-28 07:02:13,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:02:13,428 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;@1b2f4aaf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:02:13,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:02:13,437 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-28 07:02:13,437 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:02:13,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:13,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:13,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:13,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -461623188, now seen corresponding path program 1 times [2023-01-28 07:02:13,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:13,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797040356] [2023-01-28 07:02:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:13,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:13,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797040356] [2023-01-28 07:02:13,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797040356] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:13,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:02:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844618377] [2023-01-28 07:02:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:13,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:02:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:02:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:02:13,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 135 [2023-01-28 07:02:13,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:13,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:13,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 135 [2023-01-28 07:02:13,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:14,158 INFO L130 PetriNetUnfolder]: 408/676 cut-off events. [2023-01-28 07:02:14,158 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-28 07:02:14,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 676 events. 408/676 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2896 event pairs, 157 based on Foata normal form. 37/713 useless extension candidates. Maximal degree in co-relation 1388. Up to 382 conditions per place. [2023-01-28 07:02:14,164 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-01-28 07:02:14,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 131 flow [2023-01-28 07:02:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:02:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:02:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-01-28 07:02:14,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2023-01-28 07:02:14,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-01-28 07:02:14,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-01-28 07:02:14,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:14,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-01-28 07:02:14,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,188 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 231 transitions. [2023-01-28 07:02:14,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 131 flow [2023-01-28 07:02:14,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 29 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:02:14,192 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 84 flow [2023-01-28 07:02:14,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-01-28 07:02:14,196 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-01-28 07:02:14,197 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 84 flow [2023-01-28 07:02:14,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:14,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:14,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:02:14,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:14,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1425417441, now seen corresponding path program 1 times [2023-01-28 07:02:14,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:14,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681185514] [2023-01-28 07:02:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:14,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681185514] [2023-01-28 07:02:14,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681185514] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:14,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937373951] [2023-01-28 07:02:14,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:14,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:14,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:14,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 135 [2023-01-28 07:02:14,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:14,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 135 [2023-01-28 07:02:14,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:14,619 INFO L130 PetriNetUnfolder]: 380/633 cut-off events. [2023-01-28 07:02:14,619 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2023-01-28 07:02:14,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 633 events. 380/633 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2587 event pairs, 85 based on Foata normal form. 9/642 useless extension candidates. Maximal degree in co-relation 1751. Up to 264 conditions per place. [2023-01-28 07:02:14,626 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 26 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-01-28 07:02:14,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 190 flow [2023-01-28 07:02:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2023-01-28 07:02:14,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537037037037037 [2023-01-28 07:02:14,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 299 transitions. [2023-01-28 07:02:14,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 299 transitions. [2023-01-28 07:02:14,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:14,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 299 transitions. [2023-01-28 07:02:14,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-01-28 07:02:14,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,638 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,638 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 84 flow. Second operand 4 states and 299 transitions. [2023-01-28 07:02:14,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 190 flow [2023-01-28 07:02:14,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:02:14,643 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 120 flow [2023-01-28 07:02:14,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-01-28 07:02:14,644 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-01-28 07:02:14,645 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 120 flow [2023-01-28 07:02:14,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:14,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:14,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:02:14,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:14,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1425418185, now seen corresponding path program 1 times [2023-01-28 07:02:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:14,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223273679] [2023-01-28 07:02:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:14,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:14,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:14,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223273679] [2023-01-28 07:02:14,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223273679] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:14,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:14,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842933691] [2023-01-28 07:02:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:14,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:14,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 135 [2023-01-28 07:02:14,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:14,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 135 [2023-01-28 07:02:14,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:14,946 INFO L130 PetriNetUnfolder]: 365/609 cut-off events. [2023-01-28 07:02:14,946 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2023-01-28 07:02:14,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 609 events. 365/609 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2509 event pairs, 61 based on Foata normal form. 3/612 useless extension candidates. Maximal degree in co-relation 1851. Up to 304 conditions per place. [2023-01-28 07:02:14,951 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 33 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2023-01-28 07:02:14,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 282 flow [2023-01-28 07:02:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-01-28 07:02:14,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2023-01-28 07:02:14,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-01-28 07:02:14,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-01-28 07:02:14,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:14,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-01-28 07:02:14,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,955 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 120 flow. Second operand 4 states and 308 transitions. [2023-01-28 07:02:14,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 282 flow [2023-01-28 07:02:14,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:02:14,961 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 184 flow [2023-01-28 07:02:14,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-01-28 07:02:14,962 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-01-28 07:02:14,965 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 184 flow [2023-01-28 07:02:14,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:14,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:14,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:14,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:02:14,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:14,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1238268956, now seen corresponding path program 1 times [2023-01-28 07:02:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072058142] [2023-01-28 07:02:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:15,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:15,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072058142] [2023-01-28 07:02:15,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072058142] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:15,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:15,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:15,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389654304] [2023-01-28 07:02:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:15,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:15,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:15,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:15,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 135 [2023-01-28 07:02:15,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:15,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 135 [2023-01-28 07:02:15,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:15,217 INFO L130 PetriNetUnfolder]: 351/588 cut-off events. [2023-01-28 07:02:15,217 INFO L131 PetriNetUnfolder]: For 991/991 co-relation queries the response was YES. [2023-01-28 07:02:15,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 588 events. 351/588 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2380 event pairs, 54 based on Foata normal form. 3/591 useless extension candidates. Maximal degree in co-relation 2042. Up to 293 conditions per place. [2023-01-28 07:02:15,223 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 35 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2023-01-28 07:02:15,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 401 flow [2023-01-28 07:02:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-01-28 07:02:15,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685185185185185 [2023-01-28 07:02:15,225 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-01-28 07:02:15,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-01-28 07:02:15,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:15,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-01-28 07:02:15,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,231 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 184 flow. Second operand 4 states and 307 transitions. [2023-01-28 07:02:15,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 401 flow [2023-01-28 07:02:15,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 401 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:15,237 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 329 flow [2023-01-28 07:02:15,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-01-28 07:02:15,238 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-28 07:02:15,239 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 329 flow [2023-01-28 07:02:15,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:15,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:15,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:02:15,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:15,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1872185572, now seen corresponding path program 1 times [2023-01-28 07:02:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:15,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116283840] [2023-01-28 07:02:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:15,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116283840] [2023-01-28 07:02:15,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116283840] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:15,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484590089] [2023-01-28 07:02:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:15,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 135 [2023-01-28 07:02:15,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:15,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 135 [2023-01-28 07:02:15,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:15,505 INFO L130 PetriNetUnfolder]: 374/637 cut-off events. [2023-01-28 07:02:15,506 INFO L131 PetriNetUnfolder]: For 1780/1780 co-relation queries the response was YES. [2023-01-28 07:02:15,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 637 events. 374/637 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2717 event pairs, 67 based on Foata normal form. 6/643 useless extension candidates. Maximal degree in co-relation 2462. Up to 295 conditions per place. [2023-01-28 07:02:15,511 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 33 selfloop transitions, 19 changer transitions 1/53 dead transitions. [2023-01-28 07:02:15,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 490 flow [2023-01-28 07:02:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-01-28 07:02:15,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2023-01-28 07:02:15,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-01-28 07:02:15,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-01-28 07:02:15,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:15,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-01-28 07:02:15,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,515 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 329 flow. Second operand 4 states and 308 transitions. [2023-01-28 07:02:15,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 490 flow [2023-01-28 07:02:15,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 475 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:02:15,521 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 384 flow [2023-01-28 07:02:15,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-01-28 07:02:15,522 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-01-28 07:02:15,522 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 384 flow [2023-01-28 07:02:15,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:15,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:15,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:02:15,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:15,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 268388886, now seen corresponding path program 1 times [2023-01-28 07:02:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517168191] [2023-01-28 07:02:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:15,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517168191] [2023-01-28 07:02:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517168191] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:02:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170165075] [2023-01-28 07:02:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:15,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:15,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:15,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:15,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 135 [2023-01-28 07:02:15,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:15,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 135 [2023-01-28 07:02:15,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:15,778 INFO L130 PetriNetUnfolder]: 249/486 cut-off events. [2023-01-28 07:02:15,778 INFO L131 PetriNetUnfolder]: For 2406/2428 co-relation queries the response was YES. [2023-01-28 07:02:15,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 486 events. 249/486 cut-off events. For 2406/2428 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2423 event pairs, 48 based on Foata normal form. 36/517 useless extension candidates. Maximal degree in co-relation 1922. Up to 281 conditions per place. [2023-01-28 07:02:15,782 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 45 selfloop transitions, 7 changer transitions 23/86 dead transitions. [2023-01-28 07:02:15,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 86 transitions, 1007 flow [2023-01-28 07:02:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:02:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:02:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-01-28 07:02:15,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688888888888889 [2023-01-28 07:02:15,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-01-28 07:02:15,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-01-28 07:02:15,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:15,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-01-28 07:02:15,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,788 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,788 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 384 flow. Second operand 5 states and 384 transitions. [2023-01-28 07:02:15,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 86 transitions, 1007 flow [2023-01-28 07:02:15,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 86 transitions, 995 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:15,795 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 428 flow [2023-01-28 07:02:15,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-01-28 07:02:15,798 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-01-28 07:02:15,798 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 428 flow [2023-01-28 07:02:15,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:15,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:15,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:02:15,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:15,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash 862544309, now seen corresponding path program 1 times [2023-01-28 07:02:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:15,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400885053] [2023-01-28 07:02:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:15,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400885053] [2023-01-28 07:02:15,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400885053] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:15,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:15,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:15,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372842570] [2023-01-28 07:02:15,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:15,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:15,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:15,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:15,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:15,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 135 [2023-01-28 07:02:15,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:15,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:15,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 135 [2023-01-28 07:02:15,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:16,095 INFO L130 PetriNetUnfolder]: 194/411 cut-off events. [2023-01-28 07:02:16,095 INFO L131 PetriNetUnfolder]: For 2444/2519 co-relation queries the response was YES. [2023-01-28 07:02:16,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 411 events. 194/411 cut-off events. For 2444/2519 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2131 event pairs, 15 based on Foata normal form. 71/479 useless extension candidates. Maximal degree in co-relation 2016. Up to 145 conditions per place. [2023-01-28 07:02:16,099 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 50 selfloop transitions, 11 changer transitions 31/102 dead transitions. [2023-01-28 07:02:16,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 102 transitions, 1205 flow [2023-01-28 07:02:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:02:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:02:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2023-01-28 07:02:16,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671957671957671 [2023-01-28 07:02:16,102 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2023-01-28 07:02:16,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2023-01-28 07:02:16,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:16,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2023-01-28 07:02:16,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,106 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,106 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 428 flow. Second operand 7 states and 536 transitions. [2023-01-28 07:02:16,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 102 transitions, 1205 flow [2023-01-28 07:02:16,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 102 transitions, 1205 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:02:16,113 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 489 flow [2023-01-28 07:02:16,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2023-01-28 07:02:16,114 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-01-28 07:02:16,114 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 489 flow [2023-01-28 07:02:16,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.4) internal successors, (357), 5 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:16,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:16,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:02:16,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:16,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash -313975773, now seen corresponding path program 1 times [2023-01-28 07:02:16,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:16,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183046459] [2023-01-28 07:02:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:16,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183046459] [2023-01-28 07:02:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183046459] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:16,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:16,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263782433] [2023-01-28 07:02:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:16,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:02:16,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:02:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:02:16,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 135 [2023-01-28 07:02:16,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:16,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 135 [2023-01-28 07:02:16,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:16,342 INFO L130 PetriNetUnfolder]: 256/535 cut-off events. [2023-01-28 07:02:16,342 INFO L131 PetriNetUnfolder]: For 4100/4100 co-relation queries the response was YES. [2023-01-28 07:02:16,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 535 events. 256/535 cut-off events. For 4100/4100 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2730 event pairs, 43 based on Foata normal form. 6/541 useless extension candidates. Maximal degree in co-relation 3202. Up to 232 conditions per place. [2023-01-28 07:02:16,346 INFO L137 encePairwiseOnDemand]: 128/135 looper letters, 37 selfloop transitions, 16 changer transitions 26/79 dead transitions. [2023-01-28 07:02:16,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 921 flow [2023-01-28 07:02:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-01-28 07:02:16,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2023-01-28 07:02:16,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-01-28 07:02:16,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-01-28 07:02:16,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:16,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-01-28 07:02:16,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,350 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 489 flow. Second operand 4 states and 304 transitions. [2023-01-28 07:02:16,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 921 flow [2023-01-28 07:02:16,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 849 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-28 07:02:16,363 INFO L231 Difference]: Finished difference. Result has 59 places, 37 transitions, 431 flow [2023-01-28 07:02:16,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=431, PETRI_PLACES=59, PETRI_TRANSITIONS=37} [2023-01-28 07:02:16,364 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2023-01-28 07:02:16,364 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 37 transitions, 431 flow [2023-01-28 07:02:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:16,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:16,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:02:16,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:02:16,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1416130988, now seen corresponding path program 1 times [2023-01-28 07:02:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:16,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346157892] [2023-01-28 07:02:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:16,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346157892] [2023-01-28 07:02:16,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346157892] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:16,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:02:16,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782483494] [2023-01-28 07:02:16,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:16,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:02:16,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:02:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:02:16,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 135 [2023-01-28 07:02:16,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 37 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:16,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 135 [2023-01-28 07:02:16,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:16,583 INFO L130 PetriNetUnfolder]: 95/216 cut-off events. [2023-01-28 07:02:16,583 INFO L131 PetriNetUnfolder]: For 1440/1471 co-relation queries the response was YES. [2023-01-28 07:02:16,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 216 events. 95/216 cut-off events. For 1440/1471 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 859 event pairs, 11 based on Foata normal form. 27/241 useless extension candidates. Maximal degree in co-relation 1170. Up to 73 conditions per place. [2023-01-28 07:02:16,585 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 13 selfloop transitions, 10 changer transitions 41/66 dead transitions. [2023-01-28 07:02:16,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 860 flow [2023-01-28 07:02:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:02:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:02:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2023-01-28 07:02:16,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544973544973545 [2023-01-28 07:02:16,587 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2023-01-28 07:02:16,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2023-01-28 07:02:16,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:16,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2023-01-28 07:02:16,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,591 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,591 INFO L175 Difference]: Start difference. First operand has 59 places, 37 transitions, 431 flow. Second operand 7 states and 524 transitions. [2023-01-28 07:02:16,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 860 flow [2023-01-28 07:02:16,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 772 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-01-28 07:02:16,597 INFO L231 Difference]: Finished difference. Result has 61 places, 22 transitions, 218 flow [2023-01-28 07:02:16,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=61, PETRI_TRANSITIONS=22} [2023-01-28 07:02:16,598 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-01-28 07:02:16,598 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 22 transitions, 218 flow [2023-01-28 07:02:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:02:16,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:16,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:02:16,599 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)] === [2023-01-28 07:02:16,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:02:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash 729209761, now seen corresponding path program 1 times [2023-01-28 07:02:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:02:16,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128546380] [2023-01-28 07:02:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:02:16,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:02:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:02:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:02:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:02:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128546380] [2023-01-28 07:02:16,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128546380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:02:16,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:02:16,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:02:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122903619] [2023-01-28 07:02:16,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:02:16,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:02:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:02:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:02:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:02:16,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 135 [2023-01-28 07:02:16,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 22 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:02:16,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 135 [2023-01-28 07:02:16,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:02:16,767 INFO L130 PetriNetUnfolder]: 11/35 cut-off events. [2023-01-28 07:02:16,767 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2023-01-28 07:02:16,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 35 events. 11/35 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 3 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 223. Up to 23 conditions per place. [2023-01-28 07:02:16,768 INFO L137 encePairwiseOnDemand]: 132/135 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-01-28 07:02:16,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 22 transitions, 253 flow [2023-01-28 07:02:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:02:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:02:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2023-01-28 07:02:16,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-01-28 07:02:16,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 285 transitions. [2023-01-28 07:02:16,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 285 transitions. [2023-01-28 07:02:16,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:02:16,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 285 transitions. [2023-01-28 07:02:16,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,771 INFO L175 Difference]: Start difference. First operand has 61 places, 22 transitions, 218 flow. Second operand 4 states and 285 transitions. [2023-01-28 07:02:16,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 22 transitions, 253 flow [2023-01-28 07:02:16,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 136 flow, removed 9 selfloop flow, removed 27 redundant places. [2023-01-28 07:02:16,773 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-01-28 07:02:16,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-01-28 07:02:16,773 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-01-28 07:02:16,773 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-01-28 07:02:16,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:02:16,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:02:16,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:02:16,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:02:16,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:02:16,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:02:16,777 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:02:16,779 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:02:16,779 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:02:16,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:02:16 BasicIcfg [2023-01-28 07:02:16,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:02:16,782 INFO L158 Benchmark]: Toolchain (without parser) took 6136.33ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 339.1MB in the beginning and 429.2MB in the end (delta: -90.1MB). Peak memory consumption was 253.7MB. Max. memory is 16.0GB. [2023-01-28 07:02:16,782 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 212.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:02:16,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.23ms. Allocated memory is still 381.7MB. Free memory was 339.1MB in the beginning and 319.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:02:16,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.44ms. Allocated memory is still 381.7MB. Free memory was 319.1MB in the beginning and 317.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:16,783 INFO L158 Benchmark]: Boogie Preprocessor took 34.25ms. Allocated memory is still 381.7MB. Free memory was 317.0MB in the beginning and 315.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:02:16,783 INFO L158 Benchmark]: RCFGBuilder took 429.70ms. Allocated memory is still 381.7MB. Free memory was 315.6MB in the beginning and 301.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 07:02:16,783 INFO L158 Benchmark]: TraceAbstraction took 5253.64ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 301.3MB in the beginning and 429.2MB in the end (delta: -128.0MB). Peak memory consumption was 216.0MB. Max. memory is 16.0GB. [2023-01-28 07:02:16,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 212.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 369.23ms. Allocated memory is still 381.7MB. Free memory was 339.1MB in the beginning and 319.1MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.44ms. Allocated memory is still 381.7MB. Free memory was 319.1MB in the beginning and 317.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.25ms. Allocated memory is still 381.7MB. Free memory was 317.0MB in the beginning and 315.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 429.70ms. Allocated memory is still 381.7MB. Free memory was 315.6MB in the beginning and 301.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5253.64ms. Allocated memory was 381.7MB in the beginning and 459.3MB in the end (delta: 77.6MB). Free memory was 301.3MB in the beginning and 429.2MB in the end (delta: -128.0MB). Peak memory consumption was 216.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 76 PlacesBefore, 26 PlacesAfterwards, 67 TransitionsBefore, 16 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 53 TotalNumberOfCompositions, 1517 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 846, independent: 782, independent conditional: 0, independent unconditional: 782, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 516, independent: 496, independent conditional: 0, independent unconditional: 496, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 846, independent: 286, independent conditional: 0, independent unconditional: 286, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 516, unknown conditional: 0, unknown unconditional: 516] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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, 104 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: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 456 IncrementalHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 22 mSDtfsCounter, 456 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=489occurred in iteration=7, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 479 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! [2023-01-28 07:02:16,801 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...