/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:49:41,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:49:41,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:49:41,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 00:49:41,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 00:49:41,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 00:49:41,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 00:49:41,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 00:49:41,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 00:49:41,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 00:49:41,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 00:49:41,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 00:49:41,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:49:41,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:49:41,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:49:41,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:49:41,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:49:41,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:49:41,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:49:41,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:49:41,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:49:41,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:49:41,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:49:41,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:49:41,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 00:49:41,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 00:49:41,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 00:49:41,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 00:49:41,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 00:49:41,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 00:49:41,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 00:49:41,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 00:49:41,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 00:49:41,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 00:49:41,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 00:49:41,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 00:49:41,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 00:49:41,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 00:49:41,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 00:49:41,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 00:49:41,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 00:49:41,896 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 00:49:41,921 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:49:41,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:49:41,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:49:41,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:49:41,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:49:41,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:49:41,923 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:49:41,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:49:41,923 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:49:41,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:49:41,924 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:49:41,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:49:41,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:49:41,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:49:41,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:49:41,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:49:41,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:49:42,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:49:42,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:49:42,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:49:42,106 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:49:42,107 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:49:42,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-01-28 00:49:43,009 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:49:43,243 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:49:43,243 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-01-28 00:49:43,253 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efeed56ff/32a78756197b49cf8e5a9a5b2ed6a8e0/FLAG8ad501c6c [2023-01-28 00:49:43,265 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efeed56ff/32a78756197b49cf8e5a9a5b2ed6a8e0 [2023-01-28 00:49:43,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:49:43,268 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:49:43,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:49:43,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:49:43,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:49:43,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ceae44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43, skipping insertion in model container [2023-01-28 00:49:43,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:49:43,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:49:43,402 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/safe032_tso.i[945,958] [2023-01-28 00:49:43,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:49:43,521 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:49:43,534 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/safe032_tso.i[945,958] [2023-01-28 00:49:43,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:49:43,582 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:49:43,582 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:49:43,587 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:49:43,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43 WrapperNode [2023-01-28 00:49:43,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:49:43,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:49:43,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:49:43,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:49:43,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,639 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 00:49:43,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:49:43,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:49:43,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:49:43,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:49:43,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:49:43,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:49:43,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:49:43,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:49:43,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (1/1) ... [2023-01-28 00:49:43,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:49:43,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:49:43,701 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 00:49:43,719 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 00:49:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:49:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:49:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:49:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:49:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:49:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:49:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:49:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:49:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:49:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:49:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:49:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:49:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:49:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:49:43,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:49:43,732 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 00:49:43,880 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:49:43,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:49:43,993 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:49:43,998 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:49:43,998 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:49:44,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:49:43 BoogieIcfgContainer [2023-01-28 00:49:44,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:49:44,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:49:44,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:49:44,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:49:44,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:49:43" (1/3) ... [2023-01-28 00:49:44,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd5cde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:49:44, skipping insertion in model container [2023-01-28 00:49:44,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:49:43" (2/3) ... [2023-01-28 00:49:44,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd5cde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:49:44, skipping insertion in model container [2023-01-28 00:49:44,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:49:43" (3/3) ... [2023-01-28 00:49:44,005 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_tso.i [2023-01-28 00:49:44,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:49:44,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:49:44,017 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:49:44,069 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:49:44,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 00:49:44,131 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-28 00:49:44,131 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:49:44,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 00:49:44,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 00:49:44,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-28 00:49:44,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:49:44,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 00:49:44,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 00:49:44,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-28 00:49:44,166 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-28 00:49:44,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:49:44,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 00:49:44,168 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 00:49:45,737 INFO L134 LiptonReduction]: Checked pairs total: 2014 [2023-01-28 00:49:45,737 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-01-28 00:49:45,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:49:45,757 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;@1b440d34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:49:45,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 00:49:45,765 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-28 00:49:45,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:49:45,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:45,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:45,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:49:45,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1436459342, now seen corresponding path program 1 times [2023-01-28 00:49:45,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:45,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476599935] [2023-01-28 00:49:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:45,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:46,201 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 00:49:46,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:46,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476599935] [2023-01-28 00:49:46,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476599935] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:46,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:46,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:49:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007586878] [2023-01-28 00:49:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:49:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:49:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:49:46,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-01-28 00:49:46,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 00:49:46,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:46,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-01-28 00:49:46,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:46,307 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2023-01-28 00:49:46,307 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 00:49:46,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 351 events. 202/351 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1469 event pairs, 52 based on Foata normal form. 6/356 useless extension candidates. Maximal degree in co-relation 700. Up to 296 conditions per place. [2023-01-28 00:49:46,317 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-01-28 00:49:46,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 119 flow [2023-01-28 00:49:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:49:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:49:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-01-28 00:49:46,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910165484633569 [2023-01-28 00:49:46,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-01-28 00:49:46,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-01-28 00:49:46,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:46,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-01-28 00:49:46,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 00:49:46,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 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 00:49:46,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 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 00:49:46,336 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 250 transitions. [2023-01-28 00:49:46,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 119 flow [2023-01-28 00:49:46,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:49:46,339 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-01-28 00:49:46,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-01-28 00:49:46,342 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-28 00:49:46,343 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-01-28 00:49:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 00:49:46,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:46,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:49:46,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:49:46,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:46,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1580567079, now seen corresponding path program 1 times [2023-01-28 00:49:46,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:46,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313749301] [2023-01-28 00:49:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:46,534 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 00:49:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313749301] [2023-01-28 00:49:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313749301] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:46,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:46,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:49:46,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205599058] [2023-01-28 00:49:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:46,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:49:46,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:49:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:49:46,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 00:49:46,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:46,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:46,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 00:49:46,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:46,651 INFO L130 PetriNetUnfolder]: 486/777 cut-off events. [2023-01-28 00:49:46,651 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2023-01-28 00:49:46,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 777 events. 486/777 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3086 event pairs, 63 based on Foata normal form. 55/832 useless extension candidates. Maximal degree in co-relation 1796. Up to 544 conditions per place. [2023-01-28 00:49:46,657 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-01-28 00:49:46,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 196 flow [2023-01-28 00:49:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:49:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:49:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-01-28 00:49:46,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443262411347518 [2023-01-28 00:49:46,662 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-01-28 00:49:46,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-01-28 00:49:46,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:46,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-01-28 00:49:46,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:46,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:46,666 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:46,666 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 307 transitions. [2023-01-28 00:49:46,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 196 flow [2023-01-28 00:49:46,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:49:46,668 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 142 flow [2023-01-28 00:49:46,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-28 00:49:46,669 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 00:49:46,669 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 142 flow [2023-01-28 00:49:46,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:46,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:46,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:46,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:49:46,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:49:46,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1702059071, now seen corresponding path program 1 times [2023-01-28 00:49:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486944643] [2023-01-28 00:49:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:46,826 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 00:49:46,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:46,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486944643] [2023-01-28 00:49:46,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486944643] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:46,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:46,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:49:46,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233332414] [2023-01-28 00:49:46,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:46,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:49:46,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:46,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:49:46,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:49:46,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 00:49:46,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:46,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:46,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 00:49:46,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:46,899 INFO L130 PetriNetUnfolder]: 426/683 cut-off events. [2023-01-28 00:49:46,900 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2023-01-28 00:49:46,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 683 events. 426/683 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2629 event pairs, 114 based on Foata normal form. 11/694 useless extension candidates. Maximal degree in co-relation 2112. Up to 298 conditions per place. [2023-01-28 00:49:46,903 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 37 selfloop transitions, 9 changer transitions 4/50 dead transitions. [2023-01-28 00:49:46,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 338 flow [2023-01-28 00:49:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:49:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:49:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2023-01-28 00:49:46,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407801418439716 [2023-01-28 00:49:46,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 305 transitions. [2023-01-28 00:49:46,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 305 transitions. [2023-01-28 00:49:46,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:46,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 305 transitions. [2023-01-28 00:49:46,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 00:49:46,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:46,906 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:46,906 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 142 flow. Second operand 4 states and 305 transitions. [2023-01-28 00:49:46,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 338 flow [2023-01-28 00:49:46,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:49:46,909 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 216 flow [2023-01-28 00:49:46,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-01-28 00:49:46,910 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 00:49:46,912 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 216 flow [2023-01-28 00:49:46,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:46,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:46,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:46,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:49:46,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:49:46,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2019576857, now seen corresponding path program 1 times [2023-01-28 00:49:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279396855] [2023-01-28 00:49:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:47,031 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 00:49:47,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:47,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279396855] [2023-01-28 00:49:47,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279396855] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:47,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:47,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:49:47,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827598057] [2023-01-28 00:49:47,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:47,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:49:47,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:49:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:49:47,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 00:49:47,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:47,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:47,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 00:49:47,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:47,136 INFO L130 PetriNetUnfolder]: 488/805 cut-off events. [2023-01-28 00:49:47,137 INFO L131 PetriNetUnfolder]: For 1124/1124 co-relation queries the response was YES. [2023-01-28 00:49:47,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 805 events. 488/805 cut-off events. For 1124/1124 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3425 event pairs, 120 based on Foata normal form. 8/813 useless extension candidates. Maximal degree in co-relation 2786. Up to 392 conditions per place. [2023-01-28 00:49:47,139 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 35 selfloop transitions, 15 changer transitions 10/60 dead transitions. [2023-01-28 00:49:47,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 480 flow [2023-01-28 00:49:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:49:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:49:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-01-28 00:49:47,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-01-28 00:49:47,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-01-28 00:49:47,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-01-28 00:49:47,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:47,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-01-28 00:49:47,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 00:49:47,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:47,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:47,147 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 216 flow. Second operand 4 states and 311 transitions. [2023-01-28 00:49:47,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 480 flow [2023-01-28 00:49:47,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 468 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:49:47,154 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 313 flow [2023-01-28 00:49:47,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-01-28 00:49:47,155 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 00:49:47,155 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 313 flow [2023-01-28 00:49:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:47,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:47,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:47,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:49:47,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:49:47,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash -947888225, now seen corresponding path program 1 times [2023-01-28 00:49:47,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:47,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691014420] [2023-01-28 00:49:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:47,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:47,276 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 00:49:47,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:47,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691014420] [2023-01-28 00:49:47,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691014420] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:47,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:47,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:49:47,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544880499] [2023-01-28 00:49:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:47,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:49:47,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:49:47,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:49:47,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-01-28 00:49:47,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 00:49:47,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:47,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-01-28 00:49:47,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:47,315 INFO L130 PetriNetUnfolder]: 135/278 cut-off events. [2023-01-28 00:49:47,315 INFO L131 PetriNetUnfolder]: For 1295/1310 co-relation queries the response was YES. [2023-01-28 00:49:47,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 278 events. 135/278 cut-off events. For 1295/1310 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1133 event pairs, 28 based on Foata normal form. 16/288 useless extension candidates. Maximal degree in co-relation 1097. Up to 180 conditions per place. [2023-01-28 00:49:47,317 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 33 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-01-28 00:49:47,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 502 flow [2023-01-28 00:49:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:49:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:49:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-01-28 00:49:47,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2023-01-28 00:49:47,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-01-28 00:49:47,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-01-28 00:49:47,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:47,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-01-28 00:49:47,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:47,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 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 00:49:47,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 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 00:49:47,320 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 313 flow. Second operand 3 states and 244 transitions. [2023-01-28 00:49:47,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 502 flow [2023-01-28 00:49:47,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:49:47,322 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 336 flow [2023-01-28 00:49:47,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-01-28 00:49:47,324 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 00:49:47,324 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 336 flow [2023-01-28 00:49:47,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 00:49:47,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:47,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:47,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:49:47,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:49:47,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1931314573, now seen corresponding path program 1 times [2023-01-28 00:49:47,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:47,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612433862] [2023-01-28 00:49:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:47,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:47,446 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 00:49:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:47,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612433862] [2023-01-28 00:49:47,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612433862] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:47,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:47,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:49:47,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876891754] [2023-01-28 00:49:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:47,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:49:47,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:49:47,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:49:47,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-01-28 00:49:47,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:47,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:47,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-01-28 00:49:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:47,491 INFO L130 PetriNetUnfolder]: 95/204 cut-off events. [2023-01-28 00:49:47,491 INFO L131 PetriNetUnfolder]: For 866/889 co-relation queries the response was YES. [2023-01-28 00:49:47,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 204 events. 95/204 cut-off events. For 866/889 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 766 event pairs, 15 based on Foata normal form. 32/230 useless extension candidates. Maximal degree in co-relation 933. Up to 75 conditions per place. [2023-01-28 00:49:47,492 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 7 changer transitions 1/57 dead transitions. [2023-01-28 00:49:47,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 580 flow [2023-01-28 00:49:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:49:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:49:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-01-28 00:49:47,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2023-01-28 00:49:47,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-01-28 00:49:47,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-01-28 00:49:47,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:47,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-01-28 00:49:47,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 00:49:47,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:47,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 00:49:47,496 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 336 flow. Second operand 4 states and 324 transitions. [2023-01-28 00:49:47,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 580 flow [2023-01-28 00:49:47,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 570 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:49:47,499 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 360 flow [2023-01-28 00:49:47,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-01-28 00:49:47,501 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 00:49:47,501 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 360 flow [2023-01-28 00:49:47,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:49:47,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:49:47,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:47,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:49:47,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:49:47,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:49:47,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1798537270, now seen corresponding path program 1 times [2023-01-28 00:49:47,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:49:47,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704648197] [2023-01-28 00:49:47,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:49:47,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:49:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:49:47,658 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 00:49:47,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:49:47,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704648197] [2023-01-28 00:49:47,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704648197] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:49:47,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:49:47,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:49:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397009202] [2023-01-28 00:49:47,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:49:47,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:49:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:49:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:49:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:49:47,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-01-28 00:49:47,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 00:49:47,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:49:47,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-01-28 00:49:47,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:49:47,709 INFO L130 PetriNetUnfolder]: 88/184 cut-off events. [2023-01-28 00:49:47,710 INFO L131 PetriNetUnfolder]: For 966/996 co-relation queries the response was YES. [2023-01-28 00:49:47,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 184 events. 88/184 cut-off events. For 966/996 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 688 event pairs, 14 based on Foata normal form. 23/201 useless extension candidates. Maximal degree in co-relation 879. Up to 67 conditions per place. [2023-01-28 00:49:47,710 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-01-28 00:49:47,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 580 flow [2023-01-28 00:49:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:49:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:49:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-01-28 00:49:47,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-01-28 00:49:47,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-01-28 00:49:47,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-01-28 00:49:47,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:49:47,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-01-28 00:49:47,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 00:49:47,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 00:49:47,714 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 00:49:47,714 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 360 flow. Second operand 5 states and 395 transitions. [2023-01-28 00:49:47,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 580 flow [2023-01-28 00:49:47,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 556 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 00:49:47,717 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-01-28 00:49:47,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-01-28 00:49:47,718 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 00:49:47,718 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-01-28 00:49:47,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 00:49:47,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 00:49:47,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 00:49:47,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 00:49:47,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 00:49:47,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:49:47,722 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:49:47,725 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:49:47,725 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:49:47,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:49:47 BasicIcfg [2023-01-28 00:49:47,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:49:47,731 INFO L158 Benchmark]: Toolchain (without parser) took 4460.28ms. Allocated memory was 323.0MB in the beginning and 388.0MB in the end (delta: 65.0MB). Free memory was 291.3MB in the beginning and 141.0MB in the end (delta: 150.3MB). Peak memory consumption was 217.0MB. Max. memory is 16.0GB. [2023-01-28 00:49:47,731 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:49:47,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.76ms. Allocated memory is still 323.0MB. Free memory was 291.3MB in the beginning and 271.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 00:49:47,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.93ms. Allocated memory is still 323.0MB. Free memory was 270.9MB in the beginning and 269.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:49:47,732 INFO L158 Benchmark]: Boogie Preprocessor took 25.11ms. Allocated memory is still 323.0MB. Free memory was 269.2MB in the beginning and 267.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:49:47,732 INFO L158 Benchmark]: RCFGBuilder took 334.67ms. Allocated memory is still 323.0MB. Free memory was 267.4MB in the beginning and 253.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 00:49:47,732 INFO L158 Benchmark]: TraceAbstraction took 3726.70ms. Allocated memory was 323.0MB in the beginning and 388.0MB in the end (delta: 65.0MB). Free memory was 253.1MB in the beginning and 141.0MB in the end (delta: 112.1MB). Peak memory consumption was 179.3MB. Max. memory is 16.0GB. [2023-01-28 00:49:47,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 317.76ms. Allocated memory is still 323.0MB. Free memory was 291.3MB in the beginning and 271.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.93ms. Allocated memory is still 323.0MB. Free memory was 270.9MB in the beginning and 269.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.11ms. Allocated memory is still 323.0MB. Free memory was 269.2MB in the beginning and 267.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 334.67ms. Allocated memory is still 323.0MB. Free memory was 267.4MB in the beginning and 253.7MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3726.70ms. Allocated memory was 323.0MB in the beginning and 388.0MB in the end (delta: 65.0MB). Free memory was 253.1MB in the beginning and 141.0MB in the end (delta: 112.1MB). Peak memory consumption was 179.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 2014 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1147, independent: 1065, independent conditional: 0, independent unconditional: 1065, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 587, independent conditional: 0, independent unconditional: 587, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1147, independent: 478, independent conditional: 0, independent unconditional: 478, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 241 IncrementalHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 9 mSDtfsCounter, 241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=6, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 00:49:47,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...