/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/mix021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:51:59,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:51:59,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:51:59,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:51:59,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:51:59,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:51:59,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:51:59,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:51:59,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:51:59,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:51:59,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:51:59,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:51:59,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:51:59,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:51:59,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:51:59,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:51:59,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:51:59,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:51:59,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:51:59,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:51:59,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:51:59,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:51:59,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:51:59,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:51:59,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 06:51:59,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:51:59,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:51:59,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:51:59,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:51:59,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:52:00,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:52:00,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:52:00,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:52:00,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:52:00,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:52:00,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:52:00,006 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 06:52:00,032 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:52:00,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:52:00,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:52:00,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:52:00,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:52:00,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:52:00,035 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:52:00,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:52:00,035 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:52:00,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:52:00,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:52:00,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:52:00,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:52:00,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:52:00,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:52:00,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:52:00,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:52:00,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:52:00,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:52:00,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:52:00,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:52:00,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:52:00,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:52:00,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:52:00,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:52:00,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:52:00,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:52:00,235 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:52:00,235 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:52:00,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-01-28 06:52:01,241 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:52:01,478 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:52:01,479 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-01-28 06:52:01,494 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28183ca83/89c55136c886482f8f739b54c48edc0e/FLAG07470a490 [2023-01-28 06:52:01,504 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28183ca83/89c55136c886482f8f739b54c48edc0e [2023-01-28 06:52:01,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:52:01,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:52:01,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:52:01,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:52:01,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:52:01,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328ac4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01, skipping insertion in model container [2023-01-28 06:52:01,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:52:01,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:52:01,649 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/mix021_tso.oepc.i[949,962] [2023-01-28 06:52:01,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:52:01,815 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:52:01,823 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/mix021_tso.oepc.i[949,962] [2023-01-28 06:52:01,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:52:01,872 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:52:01,872 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:52:01,877 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:52:01,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01 WrapperNode [2023-01-28 06:52:01,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:52:01,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:52:01,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:52:01,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:52:01,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,920 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2023-01-28 06:52:01,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:52:01,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:52:01,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:52:01,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:52:01,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:52:01,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:52:01,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:52:01,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:52:01,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (1/1) ... [2023-01-28 06:52:01,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:52:01,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:52:01,985 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 06:52:02,009 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 06:52:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:52:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 06:52:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 06:52:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 06:52:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-01-28 06:52:02,015 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 06:52:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:52:02,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:52:02,016 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 06:52:02,144 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:52:02,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:52:02,380 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:52:02,540 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:52:02,541 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 06:52:02,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:52:02 BoogieIcfgContainer [2023-01-28 06:52:02,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:52:02,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:52:02,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:52:02,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:52:02,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:52:01" (1/3) ... [2023-01-28 06:52:02,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d343a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:52:02, skipping insertion in model container [2023-01-28 06:52:02,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:52:01" (2/3) ... [2023-01-28 06:52:02,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d343a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:52:02, skipping insertion in model container [2023-01-28 06:52:02,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:52:02" (3/3) ... [2023-01-28 06:52:02,548 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2023-01-28 06:52:02,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:52:02,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 06:52:02,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:52:02,619 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 06:52:02,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2023-01-28 06:52:02,683 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-01-28 06:52:02,684 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:52:02,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-01-28 06:52:02,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2023-01-28 06:52:02,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2023-01-28 06:52:02,693 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:52:02,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2023-01-28 06:52:02,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2023-01-28 06:52:02,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2023-01-28 06:52:02,723 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-01-28 06:52:02,723 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:52:02,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-01-28 06:52:02,725 INFO L119 LiptonReduction]: Number of co-enabled transitions 2986 [2023-01-28 06:52:05,776 INFO L134 LiptonReduction]: Checked pairs total: 8489 [2023-01-28 06:52:05,776 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-01-28 06:52:05,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:52:05,797 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;@1c66d7b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:52:05,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 06:52:05,801 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-28 06:52:05,801 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:52:05,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:05,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:05,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:05,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:05,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1745103999, now seen corresponding path program 1 times [2023-01-28 06:52:05,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691388798] [2023-01-28 06:52:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:06,139 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 06:52:06,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:06,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691388798] [2023-01-28 06:52:06,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691388798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:06,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:06,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 06:52:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232940654] [2023-01-28 06:52:06,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:06,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:52:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:52:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:52:06,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 235 [2023-01-28 06:52:06,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 06:52:06,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:06,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 235 [2023-01-28 06:52:06,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:06,741 INFO L130 PetriNetUnfolder]: 3975/5715 cut-off events. [2023-01-28 06:52:06,741 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-28 06:52:06,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11295 conditions, 5715 events. 3975/5715 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30661 event pairs, 1089 based on Foata normal form. 192/5483 useless extension candidates. Maximal degree in co-relation 11283. Up to 4303 conditions per place. [2023-01-28 06:52:06,765 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 35 selfloop transitions, 2 changer transitions 4/46 dead transitions. [2023-01-28 06:52:06,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 189 flow [2023-01-28 06:52:06,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:52:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:52:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-01-28 06:52:06,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475177304964539 [2023-01-28 06:52:06,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-01-28 06:52:06,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-01-28 06:52:06,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:06,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-01-28 06:52:06,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 06:52:06,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 06:52:06,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 06:52:06,792 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 386 transitions. [2023-01-28 06:52:06,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 189 flow [2023-01-28 06:52:06,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 06:52:06,797 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 68 flow [2023-01-28 06:52:06,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-01-28 06:52:06,800 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-01-28 06:52:06,801 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 68 flow [2023-01-28 06:52:06,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 06:52:06,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:06,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:06,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:52:06,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:06,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2095058766, now seen corresponding path program 1 times [2023-01-28 06:52:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:06,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991332054] [2023-01-28 06:52:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:06,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:07,514 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 06:52:07,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:07,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991332054] [2023-01-28 06:52:07,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991332054] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:07,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:07,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:52:07,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670516039] [2023-01-28 06:52:07,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:07,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:52:07,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:52:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:52:07,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:52:07,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 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 06:52:07,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:07,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:52:07,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:08,831 INFO L130 PetriNetUnfolder]: 12679/17328 cut-off events. [2023-01-28 06:52:08,831 INFO L131 PetriNetUnfolder]: For 908/908 co-relation queries the response was YES. [2023-01-28 06:52:08,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35830 conditions, 17328 events. 12679/17328 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 86519 event pairs, 2649 based on Foata normal form. 800/18128 useless extension candidates. Maximal degree in co-relation 35820. Up to 9301 conditions per place. [2023-01-28 06:52:08,903 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 45 selfloop transitions, 11 changer transitions 41/97 dead transitions. [2023-01-28 06:52:08,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 97 transitions, 410 flow [2023-01-28 06:52:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:52:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:52:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-01-28 06:52:08,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46930091185410333 [2023-01-28 06:52:08,906 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-01-28 06:52:08,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-01-28 06:52:08,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:08,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-01-28 06:52:08,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 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 06:52:08,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:08,911 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:08,911 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 68 flow. Second operand 7 states and 772 transitions. [2023-01-28 06:52:08,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 97 transitions, 410 flow [2023-01-28 06:52:08,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 97 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:52:08,917 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 170 flow [2023-01-28 06:52:08,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-28 06:52:08,917 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-01-28 06:52:08,917 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 170 flow [2023-01-28 06:52:08,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 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 06:52:08,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:08,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:08,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:52:08,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:08,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash -892731973, now seen corresponding path program 1 times [2023-01-28 06:52:08,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279136734] [2023-01-28 06:52:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:09,305 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 06:52:09,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:09,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279136734] [2023-01-28 06:52:09,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279136734] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:09,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:09,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:52:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700329904] [2023-01-28 06:52:09,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:09,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:52:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:09,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:52:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:52:09,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:52:09,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 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 06:52:09,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:09,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:52:09,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:10,732 INFO L130 PetriNetUnfolder]: 12378/17069 cut-off events. [2023-01-28 06:52:10,732 INFO L131 PetriNetUnfolder]: For 18696/18696 co-relation queries the response was YES. [2023-01-28 06:52:10,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52910 conditions, 17069 events. 12378/17069 cut-off events. For 18696/18696 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 89764 event pairs, 1495 based on Foata normal form. 598/17667 useless extension candidates. Maximal degree in co-relation 52894. Up to 11523 conditions per place. [2023-01-28 06:52:10,823 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 56 selfloop transitions, 21 changer transitions 37/114 dead transitions. [2023-01-28 06:52:10,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 114 transitions, 724 flow [2023-01-28 06:52:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:52:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:52:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2023-01-28 06:52:10,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47477203647416416 [2023-01-28 06:52:10,825 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2023-01-28 06:52:10,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2023-01-28 06:52:10,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:10,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2023-01-28 06:52:10,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 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 06:52:10,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:10,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:10,829 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 170 flow. Second operand 7 states and 781 transitions. [2023-01-28 06:52:10,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 114 transitions, 724 flow [2023-01-28 06:52:10,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 114 transitions, 712 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 06:52:10,961 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 308 flow [2023-01-28 06:52:10,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-01-28 06:52:10,962 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-01-28 06:52:10,962 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 308 flow [2023-01-28 06:52:10,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 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 06:52:10,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:10,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:52:10,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:10,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1904936741, now seen corresponding path program 1 times [2023-01-28 06:52:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633608008] [2023-01-28 06:52:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:10,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:11,265 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 06:52:11,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633608008] [2023-01-28 06:52:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633608008] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:11,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:11,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:52:11,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556396207] [2023-01-28 06:52:11,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:11,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:52:11,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:11,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:52:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:52:11,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 235 [2023-01-28 06:52:11,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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 06:52:11,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:11,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 235 [2023-01-28 06:52:11,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:12,269 INFO L130 PetriNetUnfolder]: 9382/13573 cut-off events. [2023-01-28 06:52:12,269 INFO L131 PetriNetUnfolder]: For 28075/28446 co-relation queries the response was YES. [2023-01-28 06:52:12,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 13573 events. 9382/13573 cut-off events. For 28075/28446 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 79275 event pairs, 2694 based on Foata normal form. 587/13660 useless extension candidates. Maximal degree in co-relation 50727. Up to 10005 conditions per place. [2023-01-28 06:52:12,346 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 53 selfloop transitions, 5 changer transitions 25/94 dead transitions. [2023-01-28 06:52:12,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 738 flow [2023-01-28 06:52:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:52:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:52:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 594 transitions. [2023-01-28 06:52:12,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505531914893617 [2023-01-28 06:52:12,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 594 transitions. [2023-01-28 06:52:12,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 594 transitions. [2023-01-28 06:52:12,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:12,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 594 transitions. [2023-01-28 06:52:12,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 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 06:52:12,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 06:52:12,356 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 06:52:12,357 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 308 flow. Second operand 5 states and 594 transitions. [2023-01-28 06:52:12,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 738 flow [2023-01-28 06:52:12,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 728 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-28 06:52:12,639 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 361 flow [2023-01-28 06:52:12,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-01-28 06:52:12,641 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-01-28 06:52:12,641 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 361 flow [2023-01-28 06:52:12,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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 06:52:12,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:12,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:12,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:52:12,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:12,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1592797087, now seen corresponding path program 1 times [2023-01-28 06:52:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:12,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98957066] [2023-01-28 06:52:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:12,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:12,860 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 06:52:12,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:12,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98957066] [2023-01-28 06:52:12,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98957066] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:12,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:12,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:52:12,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129615977] [2023-01-28 06:52:12,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:12,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:52:12,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:12,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:52:12,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:52:12,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 06:52:12,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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 06:52:12,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:12,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 06:52:12,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:13,983 INFO L130 PetriNetUnfolder]: 9150/13312 cut-off events. [2023-01-28 06:52:13,984 INFO L131 PetriNetUnfolder]: For 29963/30194 co-relation queries the response was YES. [2023-01-28 06:52:14,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52731 conditions, 13312 events. 9150/13312 cut-off events. For 29963/30194 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 77837 event pairs, 1727 based on Foata normal form. 504/13434 useless extension candidates. Maximal degree in co-relation 52709. Up to 8735 conditions per place. [2023-01-28 06:52:14,089 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 63 selfloop transitions, 19 changer transitions 22/115 dead transitions. [2023-01-28 06:52:14,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 115 transitions, 958 flow [2023-01-28 06:52:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:52:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:52:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 724 transitions. [2023-01-28 06:52:14,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134751773049645 [2023-01-28 06:52:14,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 724 transitions. [2023-01-28 06:52:14,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 724 transitions. [2023-01-28 06:52:14,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:14,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 724 transitions. [2023-01-28 06:52:14,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 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 06:52:14,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:52:14,095 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:52:14,095 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 361 flow. Second operand 6 states and 724 transitions. [2023-01-28 06:52:14,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 115 transitions, 958 flow [2023-01-28 06:52:14,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 115 transitions, 949 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 06:52:14,193 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 525 flow [2023-01-28 06:52:14,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-01-28 06:52:14,194 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-01-28 06:52:14,194 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 525 flow [2023-01-28 06:52:14,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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 06:52:14,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:14,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:14,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:52:14,194 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:14,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash -65965793, now seen corresponding path program 2 times [2023-01-28 06:52:14,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:14,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520758714] [2023-01-28 06:52:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:14,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:14,722 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 06:52:14,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:14,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520758714] [2023-01-28 06:52:14,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520758714] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:14,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:14,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:52:14,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096109007] [2023-01-28 06:52:14,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:14,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:52:14,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:14,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:52:14,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:52:14,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 06:52:14,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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 06:52:14,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:14,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 06:52:14,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:15,880 INFO L130 PetriNetUnfolder]: 9194/13338 cut-off events. [2023-01-28 06:52:15,880 INFO L131 PetriNetUnfolder]: For 44857/45303 co-relation queries the response was YES. [2023-01-28 06:52:15,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57191 conditions, 13338 events. 9194/13338 cut-off events. For 44857/45303 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 77005 event pairs, 1933 based on Foata normal form. 730/13700 useless extension candidates. Maximal degree in co-relation 57166. Up to 8803 conditions per place. [2023-01-28 06:52:15,996 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 65 selfloop transitions, 24 changer transitions 31/131 dead transitions. [2023-01-28 06:52:15,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 131 transitions, 1254 flow [2023-01-28 06:52:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:52:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:52:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 819 transitions. [2023-01-28 06:52:15,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2023-01-28 06:52:15,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 819 transitions. [2023-01-28 06:52:15,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 819 transitions. [2023-01-28 06:52:15,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:16,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 819 transitions. [2023-01-28 06:52:16,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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 06:52:16,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:16,005 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:16,005 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 525 flow. Second operand 7 states and 819 transitions. [2023-01-28 06:52:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 131 transitions, 1254 flow [2023-01-28 06:52:16,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 1219 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 06:52:16,270 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 682 flow [2023-01-28 06:52:16,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-01-28 06:52:16,271 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2023-01-28 06:52:16,271 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 682 flow [2023-01-28 06:52:16,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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 06:52:16,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:16,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:16,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 06:52:16,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:16,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1594971830, now seen corresponding path program 1 times [2023-01-28 06:52:16,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:16,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606945681] [2023-01-28 06:52:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:16,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:16,958 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 06:52:16,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:16,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606945681] [2023-01-28 06:52:16,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606945681] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:16,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:16,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:52:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542501683] [2023-01-28 06:52:16,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:52:16,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:52:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:52:16,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:52:16,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 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 06:52:16,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:16,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:52:16,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:18,850 INFO L130 PetriNetUnfolder]: 12828/17645 cut-off events. [2023-01-28 06:52:18,850 INFO L131 PetriNetUnfolder]: For 68483/68483 co-relation queries the response was YES. [2023-01-28 06:52:18,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78657 conditions, 17645 events. 12828/17645 cut-off events. For 68483/68483 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 92012 event pairs, 1231 based on Foata normal form. 476/18121 useless extension candidates. Maximal degree in co-relation 78629. Up to 10497 conditions per place. [2023-01-28 06:52:18,964 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 100 selfloop transitions, 53 changer transitions 46/199 dead transitions. [2023-01-28 06:52:18,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 199 transitions, 1999 flow [2023-01-28 06:52:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:52:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:52:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 892 transitions. [2023-01-28 06:52:18,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474468085106383 [2023-01-28 06:52:18,967 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 892 transitions. [2023-01-28 06:52:18,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 892 transitions. [2023-01-28 06:52:18,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:18,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 892 transitions. [2023-01-28 06:52:18,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.5) internal successors, (892), 8 states have internal predecessors, (892), 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 06:52:18,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 06:52:18,970 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 06:52:18,970 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 682 flow. Second operand 8 states and 892 transitions. [2023-01-28 06:52:18,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 199 transitions, 1999 flow [2023-01-28 06:52:19,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 199 transitions, 1967 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 06:52:19,230 INFO L231 Difference]: Finished difference. Result has 71 places, 100 transitions, 1233 flow [2023-01-28 06:52:19,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1233, PETRI_PLACES=71, PETRI_TRANSITIONS=100} [2023-01-28 06:52:19,230 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-01-28 06:52:19,231 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 100 transitions, 1233 flow [2023-01-28 06:52:19,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 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 06:52:19,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:19,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:19,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 06:52:19,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:19,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2145388558, now seen corresponding path program 1 times [2023-01-28 06:52:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:19,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509335664] [2023-01-28 06:52:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:19,775 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 06:52:19,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509335664] [2023-01-28 06:52:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509335664] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:19,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:52:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671544488] [2023-01-28 06:52:19,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:52:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:52:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:52:19,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2023-01-28 06:52:19,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 100 transitions, 1233 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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 06:52:19,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:19,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2023-01-28 06:52:19,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:21,262 INFO L130 PetriNetUnfolder]: 10058/14406 cut-off events. [2023-01-28 06:52:21,263 INFO L131 PetriNetUnfolder]: For 107839/108560 co-relation queries the response was YES. [2023-01-28 06:52:21,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79820 conditions, 14406 events. 10058/14406 cut-off events. For 107839/108560 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 82075 event pairs, 1558 based on Foata normal form. 670/14589 useless extension candidates. Maximal degree in co-relation 79787. Up to 9865 conditions per place. [2023-01-28 06:52:21,354 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 92 selfloop transitions, 24 changer transitions 24/162 dead transitions. [2023-01-28 06:52:21,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 162 transitions, 2053 flow [2023-01-28 06:52:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:52:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:52:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2023-01-28 06:52:21,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48814589665653496 [2023-01-28 06:52:21,356 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 803 transitions. [2023-01-28 06:52:21,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 803 transitions. [2023-01-28 06:52:21,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:21,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 803 transitions. [2023-01-28 06:52:21,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 06:52:21,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:21,359 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:21,359 INFO L175 Difference]: Start difference. First operand has 71 places, 100 transitions, 1233 flow. Second operand 7 states and 803 transitions. [2023-01-28 06:52:21,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 162 transitions, 2053 flow [2023-01-28 06:52:21,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 162 transitions, 2032 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 06:52:21,461 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 1368 flow [2023-01-28 06:52:21,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1368, PETRI_PLACES=77, PETRI_TRANSITIONS=104} [2023-01-28 06:52:21,461 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2023-01-28 06:52:21,461 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 1368 flow [2023-01-28 06:52:21,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 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 06:52:21,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:21,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 06:52:21,462 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:21,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2133723940, now seen corresponding path program 1 times [2023-01-28 06:52:21,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:21,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768286366] [2023-01-28 06:52:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:21,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:21,692 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 06:52:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768286366] [2023-01-28 06:52:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768286366] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:21,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:21,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:52:21,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715292481] [2023-01-28 06:52:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:21,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:52:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:52:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:52:21,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 06:52:21,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 104 transitions, 1368 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 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 06:52:21,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:21,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 06:52:21,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:23,100 INFO L130 PetriNetUnfolder]: 10645/15218 cut-off events. [2023-01-28 06:52:23,100 INFO L131 PetriNetUnfolder]: For 139048/139812 co-relation queries the response was YES. [2023-01-28 06:52:23,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88802 conditions, 15218 events. 10645/15218 cut-off events. For 139048/139812 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 86681 event pairs, 2063 based on Foata normal form. 711/15519 useless extension candidates. Maximal degree in co-relation 88764. Up to 10143 conditions per place. [2023-01-28 06:52:23,251 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 92 selfloop transitions, 39 changer transitions 12/165 dead transitions. [2023-01-28 06:52:23,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 165 transitions, 2222 flow [2023-01-28 06:52:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:52:23,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:52:23,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 721 transitions. [2023-01-28 06:52:23,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113475177304965 [2023-01-28 06:52:23,253 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 721 transitions. [2023-01-28 06:52:23,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 721 transitions. [2023-01-28 06:52:23,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:23,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 721 transitions. [2023-01-28 06:52:23,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 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 06:52:23,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:52:23,256 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:52:23,256 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 1368 flow. Second operand 6 states and 721 transitions. [2023-01-28 06:52:23,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 165 transitions, 2222 flow [2023-01-28 06:52:23,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 2160 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-01-28 06:52:23,551 INFO L231 Difference]: Finished difference. Result has 76 places, 115 transitions, 1612 flow [2023-01-28 06:52:23,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1612, PETRI_PLACES=76, PETRI_TRANSITIONS=115} [2023-01-28 06:52:23,552 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2023-01-28 06:52:23,552 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 115 transitions, 1612 flow [2023-01-28 06:52:23,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 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 06:52:23,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:23,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:23,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 06:52:23,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:23,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash -664159116, now seen corresponding path program 2 times [2023-01-28 06:52:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:23,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027726181] [2023-01-28 06:52:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:23,852 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 06:52:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:23,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027726181] [2023-01-28 06:52:23,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027726181] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:23,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:23,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:52:23,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120819934] [2023-01-28 06:52:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:52:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:52:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:52:23,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 06:52:23,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 115 transitions, 1612 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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 06:52:23,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:23,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 06:52:23,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:26,033 INFO L130 PetriNetUnfolder]: 11733/16834 cut-off events. [2023-01-28 06:52:26,033 INFO L131 PetriNetUnfolder]: For 160757/161571 co-relation queries the response was YES. [2023-01-28 06:52:26,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100140 conditions, 16834 events. 11733/16834 cut-off events. For 160757/161571 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 98555 event pairs, 2125 based on Foata normal form. 860/17176 useless extension candidates. Maximal degree in co-relation 100103. Up to 8738 conditions per place. [2023-01-28 06:52:26,266 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 91 selfloop transitions, 52 changer transitions 31/196 dead transitions. [2023-01-28 06:52:26,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 196 transitions, 2780 flow [2023-01-28 06:52:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:52:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:52:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 938 transitions. [2023-01-28 06:52:26,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498936170212766 [2023-01-28 06:52:26,269 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 938 transitions. [2023-01-28 06:52:26,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 938 transitions. [2023-01-28 06:52:26,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:26,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 938 transitions. [2023-01-28 06:52:26,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.25) internal successors, (938), 8 states have internal predecessors, (938), 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 06:52:26,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 06:52:26,275 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 06:52:26,275 INFO L175 Difference]: Start difference. First operand has 76 places, 115 transitions, 1612 flow. Second operand 8 states and 938 transitions. [2023-01-28 06:52:26,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 196 transitions, 2780 flow [2023-01-28 06:52:26,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 196 transitions, 2661 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-01-28 06:52:26,533 INFO L231 Difference]: Finished difference. Result has 83 places, 123 transitions, 1855 flow [2023-01-28 06:52:26,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1855, PETRI_PLACES=83, PETRI_TRANSITIONS=123} [2023-01-28 06:52:26,534 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2023-01-28 06:52:26,534 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 123 transitions, 1855 flow [2023-01-28 06:52:26,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 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 06:52:26,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:26,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:26,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 06:52:26,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:26,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1720442247, now seen corresponding path program 1 times [2023-01-28 06:52:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:26,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613272251] [2023-01-28 06:52:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:26,992 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 06:52:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613272251] [2023-01-28 06:52:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613272251] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:26,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:26,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:52:26,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617898896] [2023-01-28 06:52:26,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:26,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:52:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:26,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:52:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:52:26,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 06:52:26,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 123 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 06:52:26,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:26,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 06:52:26,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:29,409 INFO L130 PetriNetUnfolder]: 12089/17344 cut-off events. [2023-01-28 06:52:29,409 INFO L131 PetriNetUnfolder]: For 199308/200050 co-relation queries the response was YES. [2023-01-28 06:52:29,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108990 conditions, 17344 events. 12089/17344 cut-off events. For 199308/200050 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 102257 event pairs, 2223 based on Foata normal form. 561/17297 useless extension candidates. Maximal degree in co-relation 108949. Up to 11405 conditions per place. [2023-01-28 06:52:29,675 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 102 selfloop transitions, 44 changer transitions 10/178 dead transitions. [2023-01-28 06:52:29,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 178 transitions, 2686 flow [2023-01-28 06:52:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:52:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:52:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2023-01-28 06:52:29,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014184397163121 [2023-01-28 06:52:29,678 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2023-01-28 06:52:29,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2023-01-28 06:52:29,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:29,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2023-01-28 06:52:29,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 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 06:52:29,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:52:29,682 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:52:29,682 INFO L175 Difference]: Start difference. First operand has 83 places, 123 transitions, 1855 flow. Second operand 6 states and 707 transitions. [2023-01-28 06:52:29,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 178 transitions, 2686 flow [2023-01-28 06:52:30,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 2581 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-01-28 06:52:30,227 INFO L231 Difference]: Finished difference. Result has 81 places, 131 transitions, 2029 flow [2023-01-28 06:52:30,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2029, PETRI_PLACES=81, PETRI_TRANSITIONS=131} [2023-01-28 06:52:30,228 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-01-28 06:52:30,228 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 131 transitions, 2029 flow [2023-01-28 06:52:30,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 06:52:30,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:30,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:30,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 06:52:30,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:30,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:30,229 INFO L85 PathProgramCache]: Analyzing trace with hash 874775161, now seen corresponding path program 2 times [2023-01-28 06:52:30,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:30,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798163412] [2023-01-28 06:52:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:30,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:52:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798163412] [2023-01-28 06:52:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798163412] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:30,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:30,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:52:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569761753] [2023-01-28 06:52:30,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:30,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:52:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:52:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:52:30,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 235 [2023-01-28 06:52:30,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 131 transitions, 2029 flow. Second operand has 8 states, 8 states have (on average 97.25) internal successors, (778), 8 states have internal predecessors, (778), 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 06:52:30,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:30,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 235 [2023-01-28 06:52:30,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:33,659 INFO L130 PetriNetUnfolder]: 16353/22510 cut-off events. [2023-01-28 06:52:33,659 INFO L131 PetriNetUnfolder]: For 209669/209669 co-relation queries the response was YES. [2023-01-28 06:52:33,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134094 conditions, 22510 events. 16353/22510 cut-off events. For 209669/209669 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 122392 event pairs, 1419 based on Foata normal form. 240/22750 useless extension candidates. Maximal degree in co-relation 134054. Up to 12981 conditions per place. [2023-01-28 06:52:33,902 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 127 selfloop transitions, 127 changer transitions 32/286 dead transitions. [2023-01-28 06:52:33,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 286 transitions, 4158 flow [2023-01-28 06:52:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 06:52:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 06:52:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1096 transitions. [2023-01-28 06:52:33,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46638297872340423 [2023-01-28 06:52:33,906 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1096 transitions. [2023-01-28 06:52:33,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1096 transitions. [2023-01-28 06:52:33,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:33,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1096 transitions. [2023-01-28 06:52:33,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 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 06:52:33,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 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 06:52:33,912 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 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 06:52:33,912 INFO L175 Difference]: Start difference. First operand has 81 places, 131 transitions, 2029 flow. Second operand 10 states and 1096 transitions. [2023-01-28 06:52:33,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 286 transitions, 4158 flow [2023-01-28 06:52:34,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 4048 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-01-28 06:52:34,343 INFO L231 Difference]: Finished difference. Result has 93 places, 189 transitions, 3325 flow [2023-01-28 06:52:34,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=93, PETRI_TRANSITIONS=189} [2023-01-28 06:52:34,343 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2023-01-28 06:52:34,343 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 189 transitions, 3325 flow [2023-01-28 06:52:34,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.25) internal successors, (778), 8 states have internal predecessors, (778), 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 06:52:34,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:34,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:34,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 06:52:34,344 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:34,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:34,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1408889429, now seen corresponding path program 3 times [2023-01-28 06:52:34,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:34,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114499816] [2023-01-28 06:52:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:34,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:35,271 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 06:52:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114499816] [2023-01-28 06:52:35,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114499816] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:35,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:35,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:52:35,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187228932] [2023-01-28 06:52:35,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:35,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:52:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:35,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:52:35,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:52:35,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:52:35,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 189 transitions, 3325 flow. Second operand has 8 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 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 06:52:35,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:35,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:52:35,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:38,333 INFO L130 PetriNetUnfolder]: 16829/23206 cut-off events. [2023-01-28 06:52:38,333 INFO L131 PetriNetUnfolder]: For 304390/304390 co-relation queries the response was YES. [2023-01-28 06:52:38,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155947 conditions, 23206 events. 16829/23206 cut-off events. For 304390/304390 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 127046 event pairs, 2161 based on Foata normal form. 240/23446 useless extension candidates. Maximal degree in co-relation 155900. Up to 16515 conditions per place. [2023-01-28 06:52:38,509 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 212 selfloop transitions, 82 changer transitions 28/322 dead transitions. [2023-01-28 06:52:38,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 322 transitions, 5619 flow [2023-01-28 06:52:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 06:52:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 06:52:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 986 transitions. [2023-01-28 06:52:38,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466193853427896 [2023-01-28 06:52:38,511 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 986 transitions. [2023-01-28 06:52:38,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 986 transitions. [2023-01-28 06:52:38,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:38,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 986 transitions. [2023-01-28 06:52:38,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.55555555555556) internal successors, (986), 9 states have internal predecessors, (986), 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 06:52:38,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 06:52:38,515 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 06:52:38,515 INFO L175 Difference]: Start difference. First operand has 93 places, 189 transitions, 3325 flow. Second operand 9 states and 986 transitions. [2023-01-28 06:52:38,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 322 transitions, 5619 flow [2023-01-28 06:52:39,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 322 transitions, 5296 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-01-28 06:52:39,463 INFO L231 Difference]: Finished difference. Result has 100 places, 216 transitions, 3843 flow [2023-01-28 06:52:39,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3843, PETRI_PLACES=100, PETRI_TRANSITIONS=216} [2023-01-28 06:52:39,464 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2023-01-28 06:52:39,464 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 216 transitions, 3843 flow [2023-01-28 06:52:39,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 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 06:52:39,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:39,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 06:52:39,465 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:39,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:39,465 INFO L85 PathProgramCache]: Analyzing trace with hash -922116229, now seen corresponding path program 4 times [2023-01-28 06:52:39,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:39,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200615635] [2023-01-28 06:52:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:39,981 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 06:52:39,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200615635] [2023-01-28 06:52:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200615635] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:39,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:39,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:52:39,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698139501] [2023-01-28 06:52:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:52:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:52:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:52:39,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 06:52:39,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 216 transitions, 3843 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 06:52:39,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:39,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 06:52:39,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:43,136 INFO L130 PetriNetUnfolder]: 16768/24302 cut-off events. [2023-01-28 06:52:43,136 INFO L131 PetriNetUnfolder]: For 378924/380345 co-relation queries the response was YES. [2023-01-28 06:52:43,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174542 conditions, 24302 events. 16768/24302 cut-off events. For 378924/380345 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 154896 event pairs, 2481 based on Foata normal form. 686/23894 useless extension candidates. Maximal degree in co-relation 174490. Up to 12191 conditions per place. [2023-01-28 06:52:43,317 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 147 selfloop transitions, 74 changer transitions 12/289 dead transitions. [2023-01-28 06:52:43,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 289 transitions, 5281 flow [2023-01-28 06:52:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:52:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:52:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 817 transitions. [2023-01-28 06:52:43,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966565349544073 [2023-01-28 06:52:43,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 817 transitions. [2023-01-28 06:52:43,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 817 transitions. [2023-01-28 06:52:43,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:43,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 817 transitions. [2023-01-28 06:52:43,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 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 06:52:43,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:43,339 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:52:43,339 INFO L175 Difference]: Start difference. First operand has 100 places, 216 transitions, 3843 flow. Second operand 7 states and 817 transitions. [2023-01-28 06:52:43,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 289 transitions, 5281 flow [2023-01-28 06:52:43,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 289 transitions, 5023 flow, removed 77 selfloop flow, removed 8 redundant places. [2023-01-28 06:52:44,000 INFO L231 Difference]: Finished difference. Result has 99 places, 238 transitions, 4341 flow [2023-01-28 06:52:44,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4341, PETRI_PLACES=99, PETRI_TRANSITIONS=238} [2023-01-28 06:52:44,001 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2023-01-28 06:52:44,001 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 238 transitions, 4341 flow [2023-01-28 06:52:44,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 06:52:44,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:44,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:44,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 06:52:44,002 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:44,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash 628459863, now seen corresponding path program 5 times [2023-01-28 06:52:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:44,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090911762] [2023-01-28 06:52:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:44,639 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 06:52:44,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:44,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090911762] [2023-01-28 06:52:44,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090911762] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:44,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:44,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 06:52:44,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520621612] [2023-01-28 06:52:44,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:44,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:52:44,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:44,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:52:44,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:52:44,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2023-01-28 06:52:44,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 238 transitions, 4341 flow. Second operand has 8 states, 8 states have (on average 106.125) internal successors, (849), 8 states have internal predecessors, (849), 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 06:52:44,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:44,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2023-01-28 06:52:44,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:47,855 INFO L130 PetriNetUnfolder]: 17220/25147 cut-off events. [2023-01-28 06:52:47,855 INFO L131 PetriNetUnfolder]: For 374028/375819 co-relation queries the response was YES. [2023-01-28 06:52:47,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179110 conditions, 25147 events. 17220/25147 cut-off events. For 374028/375819 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 162322 event pairs, 2996 based on Foata normal form. 883/24979 useless extension candidates. Maximal degree in co-relation 179060. Up to 12288 conditions per place. [2023-01-28 06:52:48,085 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 180 selfloop transitions, 104 changer transitions 23/363 dead transitions. [2023-01-28 06:52:48,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 363 transitions, 6939 flow [2023-01-28 06:52:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:52:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:52:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 918 transitions. [2023-01-28 06:52:48,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48829787234042554 [2023-01-28 06:52:48,093 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 918 transitions. [2023-01-28 06:52:48,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 918 transitions. [2023-01-28 06:52:48,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:48,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 918 transitions. [2023-01-28 06:52:48,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.75) internal successors, (918), 8 states have internal predecessors, (918), 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 06:52:48,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 06:52:48,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 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 06:52:48,110 INFO L175 Difference]: Start difference. First operand has 99 places, 238 transitions, 4341 flow. Second operand 8 states and 918 transitions. [2023-01-28 06:52:48,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 363 transitions, 6939 flow [2023-01-28 06:52:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 363 transitions, 6920 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-28 06:52:48,639 INFO L231 Difference]: Finished difference. Result has 108 places, 278 transitions, 5707 flow [2023-01-28 06:52:48,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5707, PETRI_PLACES=108, PETRI_TRANSITIONS=278} [2023-01-28 06:52:48,640 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-01-28 06:52:48,640 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 278 transitions, 5707 flow [2023-01-28 06:52:48,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.125) internal successors, (849), 8 states have internal predecessors, (849), 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 06:52:48,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:48,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:48,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 06:52:48,641 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:48,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash 935965889, now seen corresponding path program 1 times [2023-01-28 06:52:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:48,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552436905] [2023-01-28 06:52:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:48,789 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 06:52:48,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:48,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552436905] [2023-01-28 06:52:48,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552436905] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:48,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:48,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:52:48,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846777249] [2023-01-28 06:52:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:48,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:52:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:52:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:52:48,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 06:52:48,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 278 transitions, 5707 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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 06:52:48,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:48,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 06:52:48,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:54,418 INFO L130 PetriNetUnfolder]: 24739/35426 cut-off events. [2023-01-28 06:52:54,418 INFO L131 PetriNetUnfolder]: For 678510/681890 co-relation queries the response was YES. [2023-01-28 06:52:54,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267939 conditions, 35426 events. 24739/35426 cut-off events. For 678510/681890 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 232939 event pairs, 4002 based on Foata normal form. 2053/36764 useless extension candidates. Maximal degree in co-relation 267884. Up to 17214 conditions per place. [2023-01-28 06:52:54,728 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 314 selfloop transitions, 3 changer transitions 163/512 dead transitions. [2023-01-28 06:52:54,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 512 transitions, 11593 flow [2023-01-28 06:52:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:52:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:52:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-01-28 06:52:54,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-01-28 06:52:54,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-01-28 06:52:54,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-01-28 06:52:54,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:54,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-01-28 06:52:54,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 06:52:54,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 06:52:54,732 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 06:52:54,732 INFO L175 Difference]: Start difference. First operand has 108 places, 278 transitions, 5707 flow. Second operand 5 states and 600 transitions. [2023-01-28 06:52:54,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 512 transitions, 11593 flow [2023-01-28 06:52:55,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 512 transitions, 11552 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-01-28 06:52:55,858 INFO L231 Difference]: Finished difference. Result has 110 places, 245 transitions, 4938 flow [2023-01-28 06:52:55,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4938, PETRI_PLACES=110, PETRI_TRANSITIONS=245} [2023-01-28 06:52:55,858 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2023-01-28 06:52:55,858 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 245 transitions, 4938 flow [2023-01-28 06:52:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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 06:52:55,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:55,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 06:52:55,859 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:55,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash -938231587, now seen corresponding path program 2 times [2023-01-28 06:52:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999017162] [2023-01-28 06:52:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:55,961 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 06:52:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999017162] [2023-01-28 06:52:55,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999017162] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:52:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500981485] [2023-01-28 06:52:55,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:52:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:52:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:52:55,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 06:52:55,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 245 transitions, 4938 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 06:52:55,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:55,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 06:52:55,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:52:58,827 INFO L130 PetriNetUnfolder]: 12394/18504 cut-off events. [2023-01-28 06:52:58,827 INFO L131 PetriNetUnfolder]: For 424484/428977 co-relation queries the response was YES. [2023-01-28 06:52:58,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140220 conditions, 18504 events. 12394/18504 cut-off events. For 424484/428977 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 123562 event pairs, 3031 based on Foata normal form. 1580/19204 useless extension candidates. Maximal degree in co-relation 140164. Up to 15125 conditions per place. [2023-01-28 06:52:59,033 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 252 selfloop transitions, 5 changer transitions 2/317 dead transitions. [2023-01-28 06:52:59,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 317 transitions, 6973 flow [2023-01-28 06:52:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:52:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:52:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-01-28 06:52:59,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219858156028369 [2023-01-28 06:52:59,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-01-28 06:52:59,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-01-28 06:52:59,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:52:59,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-01-28 06:52:59,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 06:52:59,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 06:52:59,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 06:52:59,037 INFO L175 Difference]: Start difference. First operand has 110 places, 245 transitions, 4938 flow. Second operand 3 states and 368 transitions. [2023-01-28 06:52:59,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 317 transitions, 6973 flow [2023-01-28 06:52:59,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 317 transitions, 6823 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-01-28 06:52:59,504 INFO L231 Difference]: Finished difference. Result has 108 places, 225 transitions, 4323 flow [2023-01-28 06:52:59,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4290, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4323, PETRI_PLACES=108, PETRI_TRANSITIONS=225} [2023-01-28 06:52:59,505 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-01-28 06:52:59,505 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 225 transitions, 4323 flow [2023-01-28 06:52:59,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 06:52:59,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:52:59,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:52:59,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 06:52:59,506 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:52:59,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:52:59,506 INFO L85 PathProgramCache]: Analyzing trace with hash 121380588, now seen corresponding path program 1 times [2023-01-28 06:52:59,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:52:59,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170232023] [2023-01-28 06:52:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:52:59,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:52:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:52:59,678 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 06:52:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:52:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170232023] [2023-01-28 06:52:59,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170232023] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:52:59,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:52:59,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:52:59,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424151327] [2023-01-28 06:52:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:52:59,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 06:52:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:52:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 06:52:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 06:52:59,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 06:52:59,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 225 transitions, 4323 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 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 06:52:59,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:52:59,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 06:52:59,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:53:01,513 INFO L130 PetriNetUnfolder]: 6157/9742 cut-off events. [2023-01-28 06:53:01,513 INFO L131 PetriNetUnfolder]: For 212581/214755 co-relation queries the response was YES. [2023-01-28 06:53:01,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76314 conditions, 9742 events. 6157/9742 cut-off events. For 212581/214755 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 63624 event pairs, 966 based on Foata normal form. 1284/10729 useless extension candidates. Maximal degree in co-relation 76259. Up to 4948 conditions per place. [2023-01-28 06:53:01,608 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 256 selfloop transitions, 9 changer transitions 5/325 dead transitions. [2023-01-28 06:53:01,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 325 transitions, 7017 flow [2023-01-28 06:53:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 06:53:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 06:53:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-01-28 06:53:01,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2023-01-28 06:53:01,609 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-01-28 06:53:01,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-01-28 06:53:01,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:53:01,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-01-28 06:53:01,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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 06:53:01,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 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 06:53:01,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 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 06:53:01,612 INFO L175 Difference]: Start difference. First operand has 108 places, 225 transitions, 4323 flow. Second operand 4 states and 492 transitions. [2023-01-28 06:53:01,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 325 transitions, 7017 flow [2023-01-28 06:53:01,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 325 transitions, 6711 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-01-28 06:53:01,791 INFO L231 Difference]: Finished difference. Result has 106 places, 189 transitions, 3402 flow [2023-01-28 06:53:01,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3402, PETRI_PLACES=106, PETRI_TRANSITIONS=189} [2023-01-28 06:53:01,792 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2023-01-28 06:53:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 189 transitions, 3402 flow [2023-01-28 06:53:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 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 06:53:01,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:53:01,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:53:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 06:53:01,793 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:53:01,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:53:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2016177905, now seen corresponding path program 1 times [2023-01-28 06:53:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:53:01,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347434637] [2023-01-28 06:53:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:53:01,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:53:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:53:02,156 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 06:53:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:53:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347434637] [2023-01-28 06:53:02,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347434637] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:53:02,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:53:02,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:53:02,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381942302] [2023-01-28 06:53:02,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:53:02,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:53:02,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:53:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:53:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:53:02,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 06:53:02,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 189 transitions, 3402 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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 06:53:02,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:53:02,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 06:53:02,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:53:04,509 INFO L130 PetriNetUnfolder]: 10542/16361 cut-off events. [2023-01-28 06:53:04,509 INFO L131 PetriNetUnfolder]: For 248411/248411 co-relation queries the response was YES. [2023-01-28 06:53:04,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124570 conditions, 16361 events. 10542/16361 cut-off events. For 248411/248411 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 104732 event pairs, 2870 based on Foata normal form. 164/16525 useless extension candidates. Maximal degree in co-relation 124516. Up to 8324 conditions per place. [2023-01-28 06:53:04,623 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 135 selfloop transitions, 22 changer transitions 137/294 dead transitions. [2023-01-28 06:53:04,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 294 transitions, 5651 flow [2023-01-28 06:53:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:53:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:53:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2023-01-28 06:53:04,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46879432624113476 [2023-01-28 06:53:04,624 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2023-01-28 06:53:04,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2023-01-28 06:53:04,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:53:04,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2023-01-28 06:53:04,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 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 06:53:04,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:53:04,626 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:53:04,627 INFO L175 Difference]: Start difference. First operand has 106 places, 189 transitions, 3402 flow. Second operand 6 states and 661 transitions. [2023-01-28 06:53:04,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 294 transitions, 5651 flow [2023-01-28 06:53:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 294 transitions, 5617 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 06:53:04,812 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 2056 flow [2023-01-28 06:53:04,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2056, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2023-01-28 06:53:04,812 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2023-01-28 06:53:04,812 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 2056 flow [2023-01-28 06:53:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 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 06:53:04,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:53:04,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:53:04,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 06:53:04,813 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:53:04,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:53:04,813 INFO L85 PathProgramCache]: Analyzing trace with hash -379899133, now seen corresponding path program 1 times [2023-01-28 06:53:04,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:53:04,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760162853] [2023-01-28 06:53:04,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:53:04,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:53:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:53:04,930 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 06:53:04,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:53:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760162853] [2023-01-28 06:53:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760162853] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:53:04,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:53:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:53:04,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64233528] [2023-01-28 06:53:04,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:53:04,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:53:04,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:53:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:53:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:53:04,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 06:53:04,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 2056 flow. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 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 06:53:04,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:53:04,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 06:53:04,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:53:05,726 INFO L130 PetriNetUnfolder]: 3876/6367 cut-off events. [2023-01-28 06:53:05,726 INFO L131 PetriNetUnfolder]: For 121114/122137 co-relation queries the response was YES. [2023-01-28 06:53:05,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48564 conditions, 6367 events. 3876/6367 cut-off events. For 121114/122137 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 41552 event pairs, 553 based on Foata normal form. 808/6973 useless extension candidates. Maximal degree in co-relation 48507. Up to 2934 conditions per place. [2023-01-28 06:53:05,767 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 163 selfloop transitions, 13 changer transitions 12/218 dead transitions. [2023-01-28 06:53:05,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 218 transitions, 4180 flow [2023-01-28 06:53:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:53:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:53:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2023-01-28 06:53:05,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225531914893617 [2023-01-28 06:53:05,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2023-01-28 06:53:05,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2023-01-28 06:53:05,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:53:05,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2023-01-28 06:53:05,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 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 06:53:05,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 06:53:05,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 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 06:53:05,786 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 2056 flow. Second operand 5 states and 614 transitions. [2023-01-28 06:53:05,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 218 transitions, 4180 flow [2023-01-28 06:53:05,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 218 transitions, 4022 flow, removed 45 selfloop flow, removed 7 redundant places. [2023-01-28 06:53:05,998 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 1833 flow [2023-01-28 06:53:05,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1833, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2023-01-28 06:53:05,999 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-01-28 06:53:05,999 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 1833 flow [2023-01-28 06:53:05,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 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 06:53:05,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:53:05,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:53:05,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 06:53:05,999 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:53:05,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:53:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1934627257, now seen corresponding path program 1 times [2023-01-28 06:53:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:53:06,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163978310] [2023-01-28 06:53:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:53:06,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:53:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:53:06,242 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 06:53:06,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:53:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163978310] [2023-01-28 06:53:06,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163978310] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:53:06,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:53:06,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:53:06,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275278017] [2023-01-28 06:53:06,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:53:06,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:53:06,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:53:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:53:06,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:53:06,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 06:53:06,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 1833 flow. Second operand has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 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 06:53:06,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:53:06,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 06:53:06,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:53:06,869 INFO L130 PetriNetUnfolder]: 3559/5767 cut-off events. [2023-01-28 06:53:06,869 INFO L131 PetriNetUnfolder]: For 100137/101151 co-relation queries the response was YES. [2023-01-28 06:53:06,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44886 conditions, 5767 events. 3559/5767 cut-off events. For 100137/101151 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37160 event pairs, 506 based on Foata normal form. 504/6084 useless extension candidates. Maximal degree in co-relation 44831. Up to 2604 conditions per place. [2023-01-28 06:53:06,907 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 120 selfloop transitions, 17 changer transitions 51/209 dead transitions. [2023-01-28 06:53:06,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 209 transitions, 3871 flow [2023-01-28 06:53:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:53:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:53:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 723 transitions. [2023-01-28 06:53:06,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2023-01-28 06:53:06,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 723 transitions. [2023-01-28 06:53:06,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 723 transitions. [2023-01-28 06:53:06,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:53:06,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 723 transitions. [2023-01-28 06:53:06,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 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 06:53:06,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:53:06,910 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 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 06:53:06,910 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 1833 flow. Second operand 6 states and 723 transitions. [2023-01-28 06:53:06,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 209 transitions, 3871 flow [2023-01-28 06:53:07,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 209 transitions, 3640 flow, removed 90 selfloop flow, removed 5 redundant places. [2023-01-28 06:53:07,233 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 1264 flow [2023-01-28 06:53:07,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1264, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2023-01-28 06:53:07,233 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2023-01-28 06:53:07,233 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 1264 flow [2023-01-28 06:53:07,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 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 06:53:07,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:53:07,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:53:07,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 06:53:07,234 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:53:07,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:53:07,234 INFO L85 PathProgramCache]: Analyzing trace with hash -465416219, now seen corresponding path program 1 times [2023-01-28 06:53:07,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:53:07,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706162458] [2023-01-28 06:53:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:53:07,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:53:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:53:07,562 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 06:53:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:53:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706162458] [2023-01-28 06:53:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706162458] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:53:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:53:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 06:53:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992093630] [2023-01-28 06:53:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:53:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:53:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:53:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:53:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:53:07,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 235 [2023-01-28 06:53:07,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 1264 flow. Second operand has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 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 06:53:07,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:53:07,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 235 [2023-01-28 06:53:07,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:53:08,009 INFO L130 PetriNetUnfolder]: 1596/2549 cut-off events. [2023-01-28 06:53:08,009 INFO L131 PetriNetUnfolder]: For 30300/30300 co-relation queries the response was YES. [2023-01-28 06:53:08,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18116 conditions, 2549 events. 1596/2549 cut-off events. For 30300/30300 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12224 event pairs, 243 based on Foata normal form. 1/2550 useless extension candidates. Maximal degree in co-relation 18067. Up to 1683 conditions per place. [2023-01-28 06:53:08,021 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 56 selfloop transitions, 9 changer transitions 109/174 dead transitions. [2023-01-28 06:53:08,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 174 transitions, 2655 flow [2023-01-28 06:53:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:53:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:53:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 736 transitions. [2023-01-28 06:53:08,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474164133738602 [2023-01-28 06:53:08,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 736 transitions. [2023-01-28 06:53:08,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 736 transitions. [2023-01-28 06:53:08,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:53:08,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 736 transitions. [2023-01-28 06:53:08,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 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 06:53:08,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:53:08,024 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 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 06:53:08,024 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 1264 flow. Second operand 7 states and 736 transitions. [2023-01-28 06:53:08,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 174 transitions, 2655 flow [2023-01-28 06:53:08,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 2184 flow, removed 148 selfloop flow, removed 20 redundant places. [2023-01-28 06:53:08,075 INFO L231 Difference]: Finished difference. Result has 97 places, 53 transitions, 526 flow [2023-01-28 06:53:08,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=97, PETRI_TRANSITIONS=53} [2023-01-28 06:53:08,076 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2023-01-28 06:53:08,076 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 53 transitions, 526 flow [2023-01-28 06:53:08,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 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 06:53:08,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:53:08,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:53:08,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 06:53:08,076 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:53:08,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:53:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1818452003, now seen corresponding path program 2 times [2023-01-28 06:53:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:53:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961458954] [2023-01-28 06:53:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:53:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:53:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:53:08,953 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 06:53:08,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:53:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961458954] [2023-01-28 06:53:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961458954] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:53:08,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:53:08,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 06:53:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136060050] [2023-01-28 06:53:08,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:53:08,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 06:53:08,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:53:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 06:53:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 06:53:08,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 235 [2023-01-28 06:53:08,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 53 transitions, 526 flow. Second operand has 9 states, 9 states have (on average 98.11111111111111) internal successors, (883), 9 states have internal predecessors, (883), 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 06:53:08,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:53:08,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 235 [2023-01-28 06:53:08,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:53:09,301 INFO L130 PetriNetUnfolder]: 491/889 cut-off events. [2023-01-28 06:53:09,302 INFO L131 PetriNetUnfolder]: For 5704/5704 co-relation queries the response was YES. [2023-01-28 06:53:09,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 889 events. 491/889 cut-off events. For 5704/5704 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3999 event pairs, 84 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 4874. Up to 334 conditions per place. [2023-01-28 06:53:09,307 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 71 selfloop transitions, 13 changer transitions 50/134 dead transitions. [2023-01-28 06:53:09,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 134 transitions, 1316 flow [2023-01-28 06:53:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 06:53:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 06:53:09,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 938 transitions. [2023-01-28 06:53:09,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44349881796690305 [2023-01-28 06:53:09,309 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 938 transitions. [2023-01-28 06:53:09,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 938 transitions. [2023-01-28 06:53:09,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:53:09,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 938 transitions. [2023-01-28 06:53:09,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.22222222222223) internal successors, (938), 9 states have internal predecessors, (938), 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 06:53:09,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 06:53:09,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 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 06:53:09,312 INFO L175 Difference]: Start difference. First operand has 97 places, 53 transitions, 526 flow. Second operand 9 states and 938 transitions. [2023-01-28 06:53:09,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 134 transitions, 1316 flow [2023-01-28 06:53:09,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 134 transitions, 1156 flow, removed 20 selfloop flow, removed 22 redundant places. [2023-01-28 06:53:09,324 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 417 flow [2023-01-28 06:53:09,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-01-28 06:53:09,324 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2023-01-28 06:53:09,324 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 417 flow [2023-01-28 06:53:09,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.11111111111111) internal successors, (883), 9 states have internal predecessors, (883), 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 06:53:09,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:53:09,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:53:09,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 06:53:09,325 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:53:09,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:53:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1875746827, now seen corresponding path program 3 times [2023-01-28 06:53:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:53:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410956845] [2023-01-28 06:53:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:53:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:53:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:53:09,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 06:53:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:53:09,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 06:53:09,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 06:53:09,446 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 06:53:09,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-28 06:53:09,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-28 06:53:09,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-28 06:53:09,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 06:53:09,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-28 06:53:09,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-28 06:53:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 06:53:09,451 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:53:09,457 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:53:09,457 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:53:09,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:53:09 BasicIcfg [2023-01-28 06:53:09,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:53:09,542 INFO L158 Benchmark]: Toolchain (without parser) took 68035.30ms. Allocated memory was 354.4MB in the beginning and 10.4GB in the end (delta: 10.0GB). Free memory was 313.5MB in the beginning and 8.1GB in the end (delta: -7.7GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-01-28 06:53:09,543 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory is still 302.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:53:09,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.89ms. Allocated memory is still 354.4MB. Free memory was 313.5MB in the beginning and 289.9MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 06:53:09,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.29ms. Allocated memory is still 354.4MB. Free memory was 289.9MB in the beginning and 287.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:53:09,543 INFO L158 Benchmark]: Boogie Preprocessor took 26.19ms. Allocated memory is still 354.4MB. Free memory was 287.1MB in the beginning and 285.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:53:09,543 INFO L158 Benchmark]: RCFGBuilder took 595.35ms. Allocated memory was 354.4MB in the beginning and 528.5MB in the end (delta: 174.1MB). Free memory was 285.0MB in the beginning and 493.7MB in the end (delta: -208.7MB). Peak memory consumption was 48.5MB. Max. memory is 16.0GB. [2023-01-28 06:53:09,544 INFO L158 Benchmark]: TraceAbstraction took 66998.33ms. Allocated memory was 528.5MB in the beginning and 10.4GB in the end (delta: 9.8GB). Free memory was 492.5MB in the beginning and 8.1GB in the end (delta: -7.6GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-01-28 06:53:09,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory is still 302.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 368.89ms. Allocated memory is still 354.4MB. Free memory was 313.5MB in the beginning and 289.9MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.29ms. Allocated memory is still 354.4MB. Free memory was 289.9MB in the beginning and 287.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.19ms. Allocated memory is still 354.4MB. Free memory was 287.1MB in the beginning and 285.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 595.35ms. Allocated memory was 354.4MB in the beginning and 528.5MB in the end (delta: 174.1MB). Free memory was 285.0MB in the beginning and 493.7MB in the end (delta: -208.7MB). Peak memory consumption was 48.5MB. Max. memory is 16.0GB. * TraceAbstraction took 66998.33ms. Allocated memory was 528.5MB in the beginning and 10.4GB in the end (delta: 9.8GB). Free memory was 492.5MB in the beginning and 8.1GB in the end (delta: -7.6GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 136 PlacesBefore, 44 PlacesAfterwards, 125 TransitionsBefore, 32 TransitionsAfterwards, 2986 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 8489 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3584, independent: 3350, independent conditional: 0, independent unconditional: 3350, dependent: 234, dependent conditional: 0, dependent unconditional: 234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1511, independent conditional: 0, independent unconditional: 1511, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3584, independent: 1839, independent conditional: 0, independent unconditional: 1839, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L724] 0 int y = 0; [L725] 0 _Bool y$flush_delayed; [L726] 0 int y$mem_tmp; [L727] 0 _Bool y$r_buff0_thd0; [L728] 0 _Bool y$r_buff0_thd1; [L729] 0 _Bool y$r_buff0_thd2; [L730] 0 _Bool y$r_buff0_thd3; [L731] 0 _Bool y$r_buff0_thd4; [L732] 0 _Bool y$r_buff1_thd0; [L733] 0 _Bool y$r_buff1_thd1; [L734] 0 _Bool y$r_buff1_thd2; [L735] 0 _Bool y$r_buff1_thd3; [L736] 0 _Bool y$r_buff1_thd4; [L737] 0 _Bool y$read_delayed; [L738] 0 int *y$read_delayed_var; [L739] 0 int y$w_buff0; [L740] 0 _Bool y$w_buff0_used; [L741] 0 int y$w_buff1; [L742] 0 _Bool y$w_buff1_used; [L744] 0 int z = 0; [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L846] 0 pthread_t t577; [L847] FCALL, FORK 0 pthread_create(&t577, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t577, ((void *)0), P0, ((void *)0))=-2, t577={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L848] 0 pthread_t t578; [L849] FCALL, FORK 0 pthread_create(&t578, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t578, ((void *)0), P1, ((void *)0))=-1, t577={5:0}, t578={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L850] 0 pthread_t t579; [L851] FCALL, FORK 0 pthread_create(&t579, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t579, ((void *)0), P2, ((void *)0))=0, t577={5:0}, t578={6:0}, t579={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L852] 0 pthread_t t580; [L853] FCALL, FORK 0 pthread_create(&t580, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t580, ((void *)0), P3, ((void *)0))=1, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L785] 3 y$w_buff1 = y$w_buff0 [L786] 3 y$w_buff0 = 2 [L787] 3 y$w_buff1_used = y$w_buff0_used [L788] 3 y$w_buff0_used = (_Bool)1 [L789] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L789] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L790] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L791] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L792] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L793] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L794] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L795] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L798] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L815] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L818] 4 __unbuffered_p3_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L821] 4 __unbuffered_p3_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L750] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L765] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L768] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L801] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L802] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L803] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L804] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L805] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L808] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L810] 3 return 0; [L824] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L825] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L826] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L827] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L828] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 1 return 0; [L771] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L772] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L773] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L774] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L775] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L778] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L780] 2 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L857] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L857] RET 0 assume_abort_if_not(main$tmp_guard0) [L859] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L860] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L861] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L862] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L863] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 y$flush_delayed = weak$$choice2 [L869] 0 y$mem_tmp = y [L870] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L871] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L872] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L873] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L874] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L876] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] 0 y = y$flush_delayed ? y$mem_tmp : y [L879] 0 y$flush_delayed = (_Bool)0 [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 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: 66.8s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 53.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1056 mSDsluCounter, 353 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 243 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3872 IncrementalHoareTripleChecker+Invalid, 4067 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 110 mSDtfsCounter, 3872 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5707occurred in iteration=15, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 393 ConstructedInterpolants, 0 QuantifiedInterpolants, 4588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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 RESULT: Ultimate proved your program to be incorrect! [2023-01-28 06:53:09,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...