/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/weaver/popl20-commit-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:00:05,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:00:05,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:00:05,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:00:05,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:00:05,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:00:05,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:00:05,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:00:05,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:00:05,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:00:05,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:00:05,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:00:05,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:00:05,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:00:05,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:00:05,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:00:05,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:00:05,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:00:05,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:00:05,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:00:05,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:00:05,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:00:05,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:00:05,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:00:05,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:00:05,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:00:05,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:00:05,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:00:05,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:00:05,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:00:05,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:00:05,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:00:05,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:00:05,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:00:05,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:00:05,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:00:05,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:00:05,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:00:05,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:00:05,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:00:05,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:00:05,367 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 04:00:05,379 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:00:05,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:00:05,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:00:05,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:00:05,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:00:05,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:00:05,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:00:05,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:00:05,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:00:05,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:00:05,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:00:05,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:00:05,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:00:05,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:00:05,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:00:05,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:00:05,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:00:05,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:00:05,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:00:05,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:00:05,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:00:05,602 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:00:05,602 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:00:05,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-01-28 04:00:06,728 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:00:06,903 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:00:06,903 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-01-28 04:00:06,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183d01c1c/0d0c39535ef44423993fe00a4065e60c/FLAGc725b3844 [2023-01-28 04:00:06,920 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183d01c1c/0d0c39535ef44423993fe00a4065e60c [2023-01-28 04:00:06,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:00:06,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:00:06,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:00:06,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:00:06,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:00:06,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:00:06" (1/1) ... [2023-01-28 04:00:06,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6428c9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:06, skipping insertion in model container [2023-01-28 04:00:06,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:00:06" (1/1) ... [2023-01-28 04:00:06,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:00:06,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:00:07,124 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2023-01-28 04:00:07,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:00:07,149 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:00:07,170 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5846,5859] [2023-01-28 04:00:07,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:00:07,190 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:00:07,190 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:00:07,195 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:00:07,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07 WrapperNode [2023-01-28 04:00:07,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:00:07,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:00:07,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:00:07,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:00:07,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,251 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 474 [2023-01-28 04:00:07,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:00:07,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:00:07,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:00:07,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:00:07,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:00:07,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:00:07,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:00:07,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:00:07,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (1/1) ... [2023-01-28 04:00:07,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:00:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:07,331 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 04:00:07,340 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 04:00:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:00:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:00:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:00:07,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:00:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 04:00:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:00:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:00:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:00:07,381 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 04:00:07,517 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:00:07,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:00:07,942 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:00:08,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:00:08,073 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-28 04:00:08,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:00:08 BoogieIcfgContainer [2023-01-28 04:00:08,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:00:08,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:00:08,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:00:08,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:00:08,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:00:06" (1/3) ... [2023-01-28 04:00:08,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dabb894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:00:08, skipping insertion in model container [2023-01-28 04:00:08,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:00:07" (2/3) ... [2023-01-28 04:00:08,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dabb894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:00:08, skipping insertion in model container [2023-01-28 04:00:08,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:00:08" (3/3) ... [2023-01-28 04:00:08,083 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-01-28 04:00:08,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:00:08,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:00:08,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:00:08,168 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 04:00:08,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 321 transitions, 674 flow [2023-01-28 04:00:08,333 INFO L130 PetriNetUnfolder]: 25/317 cut-off events. [2023-01-28 04:00:08,333 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:00:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 317 events. 25/317 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 205 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 278. Up to 2 conditions per place. [2023-01-28 04:00:08,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 321 transitions, 674 flow [2023-01-28 04:00:08,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 305 transitions, 634 flow [2023-01-28 04:00:08,349 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:00:08,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 305 transitions, 634 flow [2023-01-28 04:00:08,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 305 transitions, 634 flow [2023-01-28 04:00:08,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 305 transitions, 634 flow [2023-01-28 04:00:08,401 INFO L130 PetriNetUnfolder]: 25/305 cut-off events. [2023-01-28 04:00:08,401 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:00:08,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 305 events. 25/305 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 278. Up to 2 conditions per place. [2023-01-28 04:00:08,405 INFO L119 LiptonReduction]: Number of co-enabled transitions 2928 [2023-01-28 04:00:17,259 INFO L134 LiptonReduction]: Checked pairs total: 6242 [2023-01-28 04:00:17,260 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-01-28 04:00:17,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:00:17,273 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;@4bed0e30, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:00:17,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 04:00:17,279 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-01-28 04:00:17,279 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:00:17,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:17,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:17,280 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 2 more)] === [2023-01-28 04:00:17,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash -349444433, now seen corresponding path program 1 times [2023-01-28 04:00:17,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:17,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109116673] [2023-01-28 04:00:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:17,703 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 04:00:17,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:17,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109116673] [2023-01-28 04:00:17,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109116673] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:17,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:17,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 04:00:17,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568389865] [2023-01-28 04:00:17,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:17,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:00:17,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:00:17,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:00:17,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 644 [2023-01-28 04:00:17,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:17,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:17,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 644 [2023-01-28 04:00:17,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:18,096 INFO L130 PetriNetUnfolder]: 2346/3110 cut-off events. [2023-01-28 04:00:18,097 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2023-01-28 04:00:18,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6500 conditions, 3110 events. 2346/3110 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11954 event pairs, 381 based on Foata normal form. 1/2317 useless extension candidates. Maximal degree in co-relation 5552. Up to 2810 conditions per place. [2023-01-28 04:00:18,114 INFO L137 encePairwiseOnDemand]: 638/644 looper letters, 58 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2023-01-28 04:00:18,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 301 flow [2023-01-28 04:00:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:00:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:00:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2023-01-28 04:00:18,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684265010351967 [2023-01-28 04:00:18,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 905 transitions. [2023-01-28 04:00:18,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 905 transitions. [2023-01-28 04:00:18,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:18,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 905 transitions. [2023-01-28 04:00:18,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 04:00:18,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:18,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:18,189 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 106 flow. Second operand 3 states and 905 transitions. [2023-01-28 04:00:18,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 301 flow [2023-01-28 04:00:18,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 271 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 04:00:18,194 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 123 flow [2023-01-28 04:00:18,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-01-28 04:00:18,198 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-01-28 04:00:18,198 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 123 flow [2023-01-28 04:00:18,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:18,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:18,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:18,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:00:18,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:18,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1893474723, now seen corresponding path program 1 times [2023-01-28 04:00:18,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:18,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696089388] [2023-01-28 04:00:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:00:18,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696089388] [2023-01-28 04:00:18,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696089388] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:18,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:18,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:00:18,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017236991] [2023-01-28 04:00:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:18,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:00:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:18,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:00:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:00:18,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-28 04:00:18,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 04:00:18,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:18,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-28 04:00:18,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:18,747 INFO L130 PetriNetUnfolder]: 2646/3592 cut-off events. [2023-01-28 04:00:18,747 INFO L131 PetriNetUnfolder]: For 811/811 co-relation queries the response was YES. [2023-01-28 04:00:18,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8455 conditions, 3592 events. 2646/3592 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13439 event pairs, 1817 based on Foata normal form. 166/3568 useless extension candidates. Maximal degree in co-relation 3795. Up to 3111 conditions per place. [2023-01-28 04:00:18,761 INFO L137 encePairwiseOnDemand]: 637/644 looper letters, 44 selfloop transitions, 2 changer transitions 30/76 dead transitions. [2023-01-28 04:00:18,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 76 transitions, 355 flow [2023-01-28 04:00:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:00:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:00:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1018 transitions. [2023-01-28 04:00:18,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951863354037267 [2023-01-28 04:00:18,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1018 transitions. [2023-01-28 04:00:18,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1018 transitions. [2023-01-28 04:00:18,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:18,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1018 transitions. [2023-01-28 04:00:18,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states 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 04:00:18,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:18,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:18,771 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 123 flow. Second operand 4 states and 1018 transitions. [2023-01-28 04:00:18,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 76 transitions, 355 flow [2023-01-28 04:00:18,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 76 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:18,774 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 140 flow [2023-01-28 04:00:18,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-01-28 04:00:18,774 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2023-01-28 04:00:18,775 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 140 flow [2023-01-28 04:00:18,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 04:00:18,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:18,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:18,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:00:18,776 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 2 more)] === [2023-01-28 04:00:18,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1954963629, now seen corresponding path program 1 times [2023-01-28 04:00:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:18,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346294660] [2023-01-28 04:00:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:00:18,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:18,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346294660] [2023-01-28 04:00:18,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346294660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:18,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:18,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:00:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37703875] [2023-01-28 04:00:18,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:18,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:00:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:00:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:00:18,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-28 04:00:18,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:18,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:18,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-28 04:00:18,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:19,311 INFO L130 PetriNetUnfolder]: 2852/3829 cut-off events. [2023-01-28 04:00:19,311 INFO L131 PetriNetUnfolder]: For 1529/1529 co-relation queries the response was YES. [2023-01-28 04:00:19,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9573 conditions, 3829 events. 2852/3829 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14402 event pairs, 765 based on Foata normal form. 140/3965 useless extension candidates. Maximal degree in co-relation 9559. Up to 2698 conditions per place. [2023-01-28 04:00:19,329 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-01-28 04:00:19,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 70 transitions, 347 flow [2023-01-28 04:00:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:00:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:00:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 904 transitions. [2023-01-28 04:00:19,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46790890269151136 [2023-01-28 04:00:19,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 904 transitions. [2023-01-28 04:00:19,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 904 transitions. [2023-01-28 04:00:19,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:19,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 904 transitions. [2023-01-28 04:00:19,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 04:00:19,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:19,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:19,336 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 140 flow. Second operand 3 states and 904 transitions. [2023-01-28 04:00:19,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 70 transitions, 347 flow [2023-01-28 04:00:19,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 343 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:19,339 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 144 flow [2023-01-28 04:00:19,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-01-28 04:00:19,339 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-01-28 04:00:19,340 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 144 flow [2023-01-28 04:00:19,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:19,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:19,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:19,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 04:00:19,340 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 2 more)] === [2023-01-28 04:00:19,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:19,341 INFO L85 PathProgramCache]: Analyzing trace with hash -418605730, now seen corresponding path program 1 times [2023-01-28 04:00:19,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:19,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611370478] [2023-01-28 04:00:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:19,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:00:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611370478] [2023-01-28 04:00:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611370478] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:19,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:00:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227909719] [2023-01-28 04:00:19,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:19,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:00:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:00:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:00:19,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 644 [2023-01-28 04:00:19,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 04:00:19,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:19,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 644 [2023-01-28 04:00:19,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:19,908 INFO L130 PetriNetUnfolder]: 2676/3627 cut-off events. [2023-01-28 04:00:19,909 INFO L131 PetriNetUnfolder]: For 1635/1635 co-relation queries the response was YES. [2023-01-28 04:00:19,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 3627 events. 2676/3627 cut-off events. For 1635/1635 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13554 event pairs, 689 based on Foata normal form. 132/3755 useless extension candidates. Maximal degree in co-relation 9313. Up to 2700 conditions per place. [2023-01-28 04:00:19,927 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-01-28 04:00:19,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 353 flow [2023-01-28 04:00:19,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:00:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:00:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2023-01-28 04:00:19,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2023-01-28 04:00:19,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2023-01-28 04:00:19,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2023-01-28 04:00:19,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:19,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2023-01-28 04:00:19,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 04:00:19,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:19,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:19,935 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 144 flow. Second operand 3 states and 896 transitions. [2023-01-28 04:00:19,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 353 flow [2023-01-28 04:00:19,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:19,939 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 150 flow [2023-01-28 04:00:19,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-01-28 04:00:19,939 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-01-28 04:00:19,940 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 150 flow [2023-01-28 04:00:19,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 04:00:19,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:19,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:19,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 04:00:19,941 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 2 more)] === [2023-01-28 04:00:19,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash -354281914, now seen corresponding path program 1 times [2023-01-28 04:00:19,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:19,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698930258] [2023-01-28 04:00:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:19,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:00:20,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698930258] [2023-01-28 04:00:20,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698930258] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:00:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881484433] [2023-01-28 04:00:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:00:20,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:00:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:00:20,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 644 [2023-01-28 04:00:20,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 04:00:20,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:20,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 644 [2023-01-28 04:00:20,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:20,481 INFO L130 PetriNetUnfolder]: 3151/4250 cut-off events. [2023-01-28 04:00:20,481 INFO L131 PetriNetUnfolder]: For 2502/2502 co-relation queries the response was YES. [2023-01-28 04:00:20,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 4250 events. 3151/4250 cut-off events. For 2502/2502 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15712 event pairs, 896 based on Foata normal form. 104/4350 useless extension candidates. Maximal degree in co-relation 11289. Up to 2724 conditions per place. [2023-01-28 04:00:20,501 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 61 selfloop transitions, 2 changer transitions 8/71 dead transitions. [2023-01-28 04:00:20,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 361 flow [2023-01-28 04:00:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:00:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:00:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 899 transitions. [2023-01-28 04:00:20,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46532091097308487 [2023-01-28 04:00:20,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 899 transitions. [2023-01-28 04:00:20,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 899 transitions. [2023-01-28 04:00:20,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:20,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 899 transitions. [2023-01-28 04:00:20,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 04:00:20,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:20,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:20,509 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 150 flow. Second operand 3 states and 899 transitions. [2023-01-28 04:00:20,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 361 flow [2023-01-28 04:00:20,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:20,512 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 156 flow [2023-01-28 04:00:20,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-01-28 04:00:20,513 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-01-28 04:00:20,513 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 156 flow [2023-01-28 04:00:20,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 04:00:20,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:20,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:20,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 04:00:20,514 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 2 more)] === [2023-01-28 04:00:20,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash -556616439, now seen corresponding path program 1 times [2023-01-28 04:00:20,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:20,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740338868] [2023-01-28 04:00:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:00:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740338868] [2023-01-28 04:00:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740338868] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:20,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:20,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:00:20,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210624365] [2023-01-28 04:00:20,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:20,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:00:20,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:20,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:00:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:00:20,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-28 04:00:20,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 04:00:20,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:20,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-28 04:00:20,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:21,186 INFO L130 PetriNetUnfolder]: 4217/5773 cut-off events. [2023-01-28 04:00:21,186 INFO L131 PetriNetUnfolder]: For 3607/3607 co-relation queries the response was YES. [2023-01-28 04:00:21,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15544 conditions, 5773 events. 4217/5773 cut-off events. For 3607/3607 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 23145 event pairs, 3251 based on Foata normal form. 80/5846 useless extension candidates. Maximal degree in co-relation 15520. Up to 4248 conditions per place. [2023-01-28 04:00:21,211 INFO L137 encePairwiseOnDemand]: 639/644 looper letters, 44 selfloop transitions, 3 changer transitions 34/81 dead transitions. [2023-01-28 04:00:21,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 418 flow [2023-01-28 04:00:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:00:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:00:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2023-01-28 04:00:21,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963509316770186 [2023-01-28 04:00:21,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2023-01-28 04:00:21,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2023-01-28 04:00:21,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:21,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2023-01-28 04:00:21,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 04:00:21,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:21,220 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:21,220 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 156 flow. Second operand 4 states and 1021 transitions. [2023-01-28 04:00:21,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 418 flow [2023-01-28 04:00:21,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:21,224 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 172 flow [2023-01-28 04:00:21,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-01-28 04:00:21,227 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2023-01-28 04:00:21,227 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 172 flow [2023-01-28 04:00:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 04:00:21,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:21,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:21,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 04:00:21,229 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 2 more)] === [2023-01-28 04:00:21,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:21,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2129506320, now seen corresponding path program 1 times [2023-01-28 04:00:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:21,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672283808] [2023-01-28 04:00:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:00:21,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:21,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672283808] [2023-01-28 04:00:21,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672283808] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:21,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:21,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:00:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343723049] [2023-01-28 04:00:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:00:21,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:21,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:00:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:00:21,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-28 04:00:21,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 04:00:21,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:21,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-28 04:00:21,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:21,836 INFO L130 PetriNetUnfolder]: 3401/4661 cut-off events. [2023-01-28 04:00:21,837 INFO L131 PetriNetUnfolder]: For 3070/3070 co-relation queries the response was YES. [2023-01-28 04:00:21,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12616 conditions, 4661 events. 3401/4661 cut-off events. For 3070/3070 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 18054 event pairs, 2604 based on Foata normal form. 38/4694 useless extension candidates. Maximal degree in co-relation 12587. Up to 4246 conditions per place. [2023-01-28 04:00:21,859 INFO L137 encePairwiseOnDemand]: 639/644 looper letters, 45 selfloop transitions, 3 changer transitions 24/72 dead transitions. [2023-01-28 04:00:21,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 380 flow [2023-01-28 04:00:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:00:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:00:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1011 transitions. [2023-01-28 04:00:21,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924689440993789 [2023-01-28 04:00:21,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1011 transitions. [2023-01-28 04:00:21,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1011 transitions. [2023-01-28 04:00:21,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:21,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1011 transitions. [2023-01-28 04:00:21,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.75) internal successors, (1011), 4 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states 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 04:00:21,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:21,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:21,866 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 172 flow. Second operand 4 states and 1011 transitions. [2023-01-28 04:00:21,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 380 flow [2023-01-28 04:00:21,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 370 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 04:00:21,872 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 180 flow [2023-01-28 04:00:21,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-01-28 04:00:21,873 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-01-28 04:00:21,873 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 180 flow [2023-01-28 04:00:21,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.25) internal successors, (977), 4 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 04:00:21,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:21,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:21,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 04:00:21,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:21,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1842908479, now seen corresponding path program 1 times [2023-01-28 04:00:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:21,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484920526] [2023-01-28 04:00:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:21,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:22,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484920526] [2023-01-28 04:00:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484920526] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:22,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:22,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:00:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254058236] [2023-01-28 04:00:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:22,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:00:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:22,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:00:22,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:00:22,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 644 [2023-01-28 04:00:22,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 04:00:22,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:22,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 644 [2023-01-28 04:00:22,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:22,512 INFO L130 PetriNetUnfolder]: 3522/4838 cut-off events. [2023-01-28 04:00:22,512 INFO L131 PetriNetUnfolder]: For 3203/3203 co-relation queries the response was YES. [2023-01-28 04:00:22,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13084 conditions, 4838 events. 3522/4838 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 18911 event pairs, 2708 based on Foata normal form. 56/4891 useless extension candidates. Maximal degree in co-relation 13055. Up to 4244 conditions per place. [2023-01-28 04:00:22,530 INFO L137 encePairwiseOnDemand]: 634/644 looper letters, 41 selfloop transitions, 8 changer transitions 25/74 dead transitions. [2023-01-28 04:00:22,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 404 flow [2023-01-28 04:00:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:00:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:00:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1251 transitions. [2023-01-28 04:00:22,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38850931677018635 [2023-01-28 04:00:22,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1251 transitions. [2023-01-28 04:00:22,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1251 transitions. [2023-01-28 04:00:22,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:22,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1251 transitions. [2023-01-28 04:00:22,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.2) internal successors, (1251), 5 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states 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 04:00:22,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 644.0) internal successors, (3864), 6 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 04:00:22,540 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 644.0) internal successors, (3864), 6 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 04:00:22,540 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 180 flow. Second operand 5 states and 1251 transitions. [2023-01-28 04:00:22,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 404 flow [2023-01-28 04:00:22,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 392 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 04:00:22,545 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 202 flow [2023-01-28 04:00:22,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-01-28 04:00:22,547 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-01-28 04:00:22,547 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 202 flow [2023-01-28 04:00:22,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 04:00:22,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:22,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:22,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 04:00:22,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:22,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:22,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1999596867, now seen corresponding path program 1 times [2023-01-28 04:00:22,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:22,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961720014] [2023-01-28 04:00:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:22,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:00:22,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961720014] [2023-01-28 04:00:22,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961720014] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:22,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:22,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:00:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115825428] [2023-01-28 04:00:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:00:22,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:00:22,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:00:22,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-28 04:00:22,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states 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 04:00:22,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:22,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-28 04:00:22,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:23,006 INFO L130 PetriNetUnfolder]: 1883/2543 cut-off events. [2023-01-28 04:00:23,006 INFO L131 PetriNetUnfolder]: For 1868/1868 co-relation queries the response was YES. [2023-01-28 04:00:23,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6966 conditions, 2543 events. 1883/2543 cut-off events. For 1868/1868 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8435 event pairs, 709 based on Foata normal form. 30/2572 useless extension candidates. Maximal degree in co-relation 6933. Up to 2325 conditions per place. [2023-01-28 04:00:23,014 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 51 selfloop transitions, 2 changer transitions 9/62 dead transitions. [2023-01-28 04:00:23,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 358 flow [2023-01-28 04:00:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:00:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:00:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-01-28 04:00:23,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616977225672878 [2023-01-28 04:00:23,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-01-28 04:00:23,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-01-28 04:00:23,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:23,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-01-28 04:00:23,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:00:23,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:23,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 04:00:23,021 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 202 flow. Second operand 3 states and 892 transitions. [2023-01-28 04:00:23,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 358 flow [2023-01-28 04:00:23,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 340 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 04:00:23,024 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 198 flow [2023-01-28 04:00:23,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-01-28 04:00:23,025 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-01-28 04:00:23,025 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 198 flow [2023-01-28 04:00:23,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states 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 04:00:23,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:23,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:23,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 04:00:23,026 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:23,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash -852059088, now seen corresponding path program 1 times [2023-01-28 04:00:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886759680] [2023-01-28 04:00:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:23,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:00:23,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:23,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886759680] [2023-01-28 04:00:23,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886759680] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:23,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:23,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:00:23,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190342407] [2023-01-28 04:00:23,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:00:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:00:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:00:23,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-28 04:00:23,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 288.25) internal successors, (1153), 4 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states 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 04:00:23,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:23,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-28 04:00:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:23,922 INFO L130 PetriNetUnfolder]: 5057/6765 cut-off events. [2023-01-28 04:00:23,922 INFO L131 PetriNetUnfolder]: For 5355/5355 co-relation queries the response was YES. [2023-01-28 04:00:23,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19325 conditions, 6765 events. 5057/6765 cut-off events. For 5355/5355 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26305 event pairs, 1639 based on Foata normal form. 198/6962 useless extension candidates. Maximal degree in co-relation 19294. Up to 2697 conditions per place. [2023-01-28 04:00:23,947 INFO L137 encePairwiseOnDemand]: 637/644 looper letters, 89 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2023-01-28 04:00:23,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 578 flow [2023-01-28 04:00:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:00:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:00:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1207 transitions. [2023-01-28 04:00:23,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468555900621118 [2023-01-28 04:00:23,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1207 transitions. [2023-01-28 04:00:23,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1207 transitions. [2023-01-28 04:00:23,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:23,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1207 transitions. [2023-01-28 04:00:23,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states 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 04:00:23,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:23,965 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:23,965 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 198 flow. Second operand 4 states and 1207 transitions. [2023-01-28 04:00:23,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 578 flow [2023-01-28 04:00:23,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 101 transitions, 574 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:00:23,970 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 294 flow [2023-01-28 04:00:23,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-01-28 04:00:23,971 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2023-01-28 04:00:23,971 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 294 flow [2023-01-28 04:00:23,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.25) internal successors, (1153), 4 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states 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 04:00:23,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:23,972 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 04:00:23,972 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:23,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash 335744450, now seen corresponding path program 1 times [2023-01-28 04:00:23,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176361888] [2023-01-28 04:00:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:24,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:24,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176361888] [2023-01-28 04:00:24,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176361888] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:24,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220074164] [2023-01-28 04:00:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:24,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:24,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:24,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:24,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 04:00:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:24,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:00:24,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:00:24,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:00:24,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220074164] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:24,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:24,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 04:00:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589363252] [2023-01-28 04:00:24,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:24,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:00:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:00:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:00:24,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 644 [2023-01-28 04:00:24,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 294 flow. Second operand has 12 states, 12 states have (on average 239.33333333333334) internal successors, (2872), 12 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states 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 04:00:24,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:24,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 644 [2023-01-28 04:00:24,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:25,323 INFO L130 PetriNetUnfolder]: 5288/7161 cut-off events. [2023-01-28 04:00:25,324 INFO L131 PetriNetUnfolder]: For 10275/10275 co-relation queries the response was YES. [2023-01-28 04:00:25,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23568 conditions, 7161 events. 5288/7161 cut-off events. For 10275/10275 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28333 event pairs, 3732 based on Foata normal form. 16/7175 useless extension candidates. Maximal degree in co-relation 22532. Up to 6765 conditions per place. [2023-01-28 04:00:25,355 INFO L137 encePairwiseOnDemand]: 638/644 looper letters, 57 selfloop transitions, 3 changer transitions 45/105 dead transitions. [2023-01-28 04:00:25,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 662 flow [2023-01-28 04:00:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:00:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:00:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1491 transitions. [2023-01-28 04:00:25,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3858695652173913 [2023-01-28 04:00:25,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1491 transitions. [2023-01-28 04:00:25,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1491 transitions. [2023-01-28 04:00:25,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:25,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1491 transitions. [2023-01-28 04:00:25,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states 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 04:00:25,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states 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 04:00:25,364 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states 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 04:00:25,364 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 294 flow. Second operand 6 states and 1491 transitions. [2023-01-28 04:00:25,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 662 flow [2023-01-28 04:00:25,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 636 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-01-28 04:00:25,377 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 294 flow [2023-01-28 04:00:25,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2023-01-28 04:00:25,377 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-01-28 04:00:25,377 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 294 flow [2023-01-28 04:00:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 239.33333333333334) internal successors, (2872), 12 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states 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 04:00:25,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:25,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:25,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 04:00:25,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 04:00:25,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:25,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash -493373472, now seen corresponding path program 2 times [2023-01-28 04:00:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:25,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184277583] [2023-01-28 04:00:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184277583] [2023-01-28 04:00:25,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184277583] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837825787] [2023-01-28 04:00:25,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:00:25,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:25,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:25,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:25,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 04:00:26,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:00:26,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:26,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:00:26,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:26,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837825787] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:26,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 04:00:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827951931] [2023-01-28 04:00:26,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:26,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:00:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:00:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:00:26,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 644 [2023-01-28 04:00:26,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 237.88888888888889) internal successors, (4282), 18 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states 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 04:00:26,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:26,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 644 [2023-01-28 04:00:26,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:27,381 INFO L130 PetriNetUnfolder]: 5372/7294 cut-off events. [2023-01-28 04:00:27,382 INFO L131 PetriNetUnfolder]: For 8521/8521 co-relation queries the response was YES. [2023-01-28 04:00:27,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23031 conditions, 7294 events. 5372/7294 cut-off events. For 8521/8521 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28948 event pairs, 3740 based on Foata normal form. 28/7320 useless extension candidates. Maximal degree in co-relation 22993. Up to 6765 conditions per place. [2023-01-28 04:00:27,424 INFO L137 encePairwiseOnDemand]: 638/644 looper letters, 57 selfloop transitions, 4 changer transitions 54/115 dead transitions. [2023-01-28 04:00:27,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 115 transitions, 728 flow [2023-01-28 04:00:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:00:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:00:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1969 transitions. [2023-01-28 04:00:27,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38218167701863354 [2023-01-28 04:00:27,428 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1969 transitions. [2023-01-28 04:00:27,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1969 transitions. [2023-01-28 04:00:27,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:27,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1969 transitions. [2023-01-28 04:00:27,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 246.125) internal successors, (1969), 8 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states 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 04:00:27,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 644.0) internal successors, (5796), 9 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states 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 04:00:27,436 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 644.0) internal successors, (5796), 9 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states 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 04:00:27,436 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 294 flow. Second operand 8 states and 1969 transitions. [2023-01-28 04:00:27,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 115 transitions, 728 flow [2023-01-28 04:00:27,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 708 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 04:00:27,445 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 314 flow [2023-01-28 04:00:27,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-01-28 04:00:27,445 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2023-01-28 04:00:27,446 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 314 flow [2023-01-28 04:00:27,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 237.88888888888889) internal successors, (4282), 18 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states 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 04:00:27,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:27,447 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:27,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 04:00:27,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 04:00:27,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:27,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2111651186, now seen corresponding path program 3 times [2023-01-28 04:00:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:27,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185036912] [2023-01-28 04:00:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:27,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-01-28 04:00:28,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:28,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185036912] [2023-01-28 04:00:28,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185036912] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:28,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23588113] [2023-01-28 04:00:28,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:00:28,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:28,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:28,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 04:00:28,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:00:28,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:00:28,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:00:28,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-28 04:00:28,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-28 04:00:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23588113] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:00:28,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:00:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-01-28 04:00:28,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645729086] [2023-01-28 04:00:28,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:00:28,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:00:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:00:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:00:28,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 644 [2023-01-28 04:00:28,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 314 flow. Second operand has 12 states, 12 states have (on average 235.5) internal successors, (2826), 12 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states 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 04:00:28,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:28,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 644 [2023-01-28 04:00:28,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:30,863 INFO L130 PetriNetUnfolder]: 18348/25227 cut-off events. [2023-01-28 04:00:30,863 INFO L131 PetriNetUnfolder]: For 40134/40134 co-relation queries the response was YES. [2023-01-28 04:00:30,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82252 conditions, 25227 events. 18348/25227 cut-off events. For 40134/40134 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 126503 event pairs, 6024 based on Foata normal form. 1976/27199 useless extension candidates. Maximal degree in co-relation 82207. Up to 6441 conditions per place. [2023-01-28 04:00:30,975 INFO L137 encePairwiseOnDemand]: 634/644 looper letters, 139 selfloop transitions, 14 changer transitions 161/314 dead transitions. [2023-01-28 04:00:30,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 314 transitions, 2022 flow [2023-01-28 04:00:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:00:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:00:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5063 transitions. [2023-01-28 04:00:30,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.374371487725525 [2023-01-28 04:00:30,985 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5063 transitions. [2023-01-28 04:00:30,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5063 transitions. [2023-01-28 04:00:30,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:30,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5063 transitions. [2023-01-28 04:00:30,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 241.0952380952381) internal successors, (5063), 21 states have internal predecessors, (5063), 0 states have call successors, (0), 0 states 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 04:00:31,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 644.0) internal successors, (14168), 22 states have internal predecessors, (14168), 0 states have call successors, (0), 0 states 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 04:00:31,007 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 644.0) internal successors, (14168), 22 states have internal predecessors, (14168), 0 states have call successors, (0), 0 states 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 04:00:31,007 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 314 flow. Second operand 21 states and 5063 transitions. [2023-01-28 04:00:31,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 314 transitions, 2022 flow [2023-01-28 04:00:31,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 314 transitions, 1930 flow, removed 43 selfloop flow, removed 6 redundant places. [2023-01-28 04:00:31,037 INFO L231 Difference]: Finished difference. Result has 95 places, 67 transitions, 383 flow [2023-01-28 04:00:31,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=383, PETRI_PLACES=95, PETRI_TRANSITIONS=67} [2023-01-28 04:00:31,038 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2023-01-28 04:00:31,038 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 67 transitions, 383 flow [2023-01-28 04:00:31,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 235.5) internal successors, (2826), 12 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states 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 04:00:31,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:31,039 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:31,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 04:00:31,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:31,244 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:31,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash -990366533, now seen corresponding path program 1 times [2023-01-28 04:00:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736564269] [2023-01-28 04:00:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-01-28 04:00:31,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:31,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736564269] [2023-01-28 04:00:31,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736564269] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:00:31,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:00:31,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:00:31,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627315482] [2023-01-28 04:00:31,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:00:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:00:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:00:31,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:00:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:00:31,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 644 [2023-01-28 04:00:31,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 67 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 04:00:31,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:00:31,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 644 [2023-01-28 04:00:31,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:00:37,282 INFO L130 PetriNetUnfolder]: 37552/50260 cut-off events. [2023-01-28 04:00:37,282 INFO L131 PetriNetUnfolder]: For 133074/133074 co-relation queries the response was YES. [2023-01-28 04:00:37,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179980 conditions, 50260 events. 37552/50260 cut-off events. For 133074/133074 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 246066 event pairs, 12155 based on Foata normal form. 1340/51598 useless extension candidates. Maximal degree in co-relation 179921. Up to 17334 conditions per place. [2023-01-28 04:00:37,612 INFO L137 encePairwiseOnDemand]: 641/644 looper letters, 134 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2023-01-28 04:00:37,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 1045 flow [2023-01-28 04:00:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:00:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:00:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1207 transitions. [2023-01-28 04:00:37,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468555900621118 [2023-01-28 04:00:37,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1207 transitions. [2023-01-28 04:00:37,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1207 transitions. [2023-01-28 04:00:37,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:00:37,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1207 transitions. [2023-01-28 04:00:37,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states 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 04:00:37,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:37,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 644.0) internal successors, (3220), 5 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states 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 04:00:37,620 INFO L175 Difference]: Start difference. First operand has 95 places, 67 transitions, 383 flow. Second operand 4 states and 1207 transitions. [2023-01-28 04:00:37,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 1045 flow [2023-01-28 04:00:37,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 139 transitions, 994 flow, removed 19 selfloop flow, removed 9 redundant places. [2023-01-28 04:00:37,759 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 386 flow [2023-01-28 04:00:37,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2023-01-28 04:00:37,759 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2023-01-28 04:00:37,759 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 386 flow [2023-01-28 04:00:37,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 04:00:37,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:00:37,760 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:00:37,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 04:00:37,760 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:00:37,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:00:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -156124942, now seen corresponding path program 1 times [2023-01-28 04:00:37,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:00:37,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230226826] [2023-01-28 04:00:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:37,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:00:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:00:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:00:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230226826] [2023-01-28 04:00:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230226826] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:00:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233151407] [2023-01-28 04:00:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:00:44,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:00:44,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:00:44,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:00:44,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 04:00:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:00:44,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 133 conjunts are in the unsatisfiable core [2023-01-28 04:00:44,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:00:45,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 04:00:45,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:00:46,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:00:46,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:00:46,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:00:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:00:47,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:00:58,484 WARN L222 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:01:22,884 WARN L222 SmtUtils]: Spent 24.13s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:02:13,247 WARN L222 SmtUtils]: Spent 50.15s on a formula simplification. DAG size of input: 65 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:02:37,428 WARN L222 SmtUtils]: Spent 24.06s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:03:01,730 WARN L222 SmtUtils]: Spent 24.11s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:04:04,303 WARN L222 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 88 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:04:58,651 WARN L222 SmtUtils]: Spent 54.16s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:07:19,586 WARN L222 SmtUtils]: Spent 2.31m on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:08:06,127 WARN L222 SmtUtils]: Spent 46.14s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:08:17,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:08:17,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 192 [2023-01-28 04:08:17,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:08:17,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 6961241 treesize of output 6694659 [2023-01-28 04:08:24,574 WARN L222 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 3537 DAG size of output: 828 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 04:08:24,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:08:24,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 20027 treesize of output 19619 [2023-01-28 04:08:25,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:08:25,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 19421 treesize of output 14771 [2023-01-28 04:08:25,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:08:25,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 14573 treesize of output 13559 [2023-01-28 04:08:26,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:08:26,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 13361 treesize of output 11135 Received shutdown request... [2023-01-28 04:14:22,777 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:14:22,783 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 04:14:22,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 04:14:22,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 04:14:22,820 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:14:22,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 04:14:22,992 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 28ms.. [2023-01-28 04:14:22,994 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 04:14:22,994 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 04:14:22,999 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 04:14:22,999 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 04:14:22,999 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:14:23,002 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:14:23,002 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:14:23,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:14:23 BasicIcfg [2023-01-28 04:14:23,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:14:23,004 INFO L158 Benchmark]: Toolchain (without parser) took 856081.08ms. Allocated memory was 511.7MB in the beginning and 6.6GB in the end (delta: 6.1GB). Free memory was 461.8MB in the beginning and 5.2GB in the end (delta: -4.7GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-01-28 04:14:23,004 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory is still 334.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:14:23,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.73ms. Allocated memory is still 511.7MB. Free memory was 461.5MB in the beginning and 448.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:14:23,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.26ms. Allocated memory is still 511.7MB. Free memory was 448.1MB in the beginning and 444.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 04:14:23,004 INFO L158 Benchmark]: Boogie Preprocessor took 46.73ms. Allocated memory is still 511.7MB. Free memory was 444.7MB in the beginning and 442.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:14:23,005 INFO L158 Benchmark]: RCFGBuilder took 765.65ms. Allocated memory is still 511.7MB. Free memory was 442.0MB in the beginning and 426.5MB in the end (delta: 15.4MB). Peak memory consumption was 32.1MB. Max. memory is 16.0GB. [2023-01-28 04:14:23,005 INFO L158 Benchmark]: TraceAbstraction took 854925.80ms. Allocated memory was 511.7MB in the beginning and 6.6GB in the end (delta: 6.1GB). Free memory was 425.5MB in the beginning and 5.2GB in the end (delta: -4.8GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-01-28 04:14:23,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory is still 334.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 271.73ms. Allocated memory is still 511.7MB. Free memory was 461.5MB in the beginning and 448.1MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.26ms. Allocated memory is still 511.7MB. Free memory was 448.1MB in the beginning and 444.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.73ms. Allocated memory is still 511.7MB. Free memory was 444.7MB in the beginning and 442.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 765.65ms. Allocated memory is still 511.7MB. Free memory was 442.0MB in the beginning and 426.5MB in the end (delta: 15.4MB). Peak memory consumption was 32.1MB. Max. memory is 16.0GB. * TraceAbstraction took 854925.80ms. Allocated memory was 511.7MB in the beginning and 6.6GB in the end (delta: 6.1GB). Free memory was 425.5MB in the beginning and 5.2GB in the end (delta: -4.8GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.9s, 293 PlacesBefore, 46 PlacesAfterwards, 305 TransitionsBefore, 41 TransitionsAfterwards, 2928 CoEnabledTransitionPairs, 7 FixpointIterations, 206 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 47 TrivialYvCompositions, 15 ConcurrentYvCompositions, 17 ChoiceCompositions, 323 TotalNumberOfCompositions, 6242 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3905, independent: 3762, independent conditional: 0, independent unconditional: 3762, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1737, independent: 1688, independent conditional: 0, independent unconditional: 1688, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3905, independent: 2074, independent conditional: 0, independent unconditional: 2074, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 1737, unknown conditional: 0, unknown unconditional: 1737] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 135, Positive conditional cache size: 0, Positive unconditional cache size: 135, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 28ms.. - TimeoutResultAtElement [Line: 177]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 28ms.. - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 28ms.. - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 28ms.. - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 28ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 341 locations, 5 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: 854.8s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 560 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 560 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2353 IncrementalHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 0 mSDtfsCounter, 2353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=14, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 603 NumberOfCodeBlocks, 591 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 2087 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1534 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 20 InterpolantComputations, 11 PerfectInterpolantSequences, 135/155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown