/usr/bin/java -Xmx8000000000 -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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 20:04:34,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 20:04:34,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 20:04:34,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 20:04:34,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 20:04:34,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 20:04:34,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 20:04:34,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 20:04:34,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 20:04:34,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 20:04:34,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 20:04:34,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 20:04:34,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 20:04:34,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 20:04:34,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 20:04:34,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 20:04:34,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 20:04:34,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 20:04:34,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 20:04:34,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 20:04:34,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 20:04:34,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 20:04:34,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 20:04:34,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 20:04:34,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 20:04:34,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 20:04:34,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 20:04:34,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 20:04:34,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 20:04:34,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 20:04:34,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 20:04:34,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 20:04:34,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 20:04:34,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 20:04:34,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 20:04:34,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 20:04:34,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 20:04:34,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 20:04:34,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 20:04:34,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 20:04:34,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 20:04:34,504 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-SemanticLbe.epf [2022-12-12 20:04:34,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 20:04:34,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 20:04:34,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 20:04:34,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 20:04:34,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 20:04:34,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 20:04:34,532 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 20:04:34,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 20:04:34,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 20:04:34,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 20:04:34,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 20:04:34,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 20:04:34,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 20:04:34,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 20:04:34,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 20:04:34,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 20:04:34,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:04:34,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 20:04:34,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 20:04:34,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 20:04:34,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 20:04:34,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 20:04:34,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 20:04:34,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 20:04:34,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 20:04:34,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 20:04:34,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 20:04:34,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 20:04:34,791 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 20:04:34,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2022-12-12 20:04:35,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 20:04:35,875 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 20:04:35,876 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2022-12-12 20:04:35,881 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9666ed8b2/4626bfb7389343dc82b40991ee1feff9/FLAG26b50e23b [2022-12-12 20:04:35,894 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9666ed8b2/4626bfb7389343dc82b40991ee1feff9 [2022-12-12 20:04:35,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 20:04:35,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 20:04:35,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 20:04:35,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 20:04:35,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 20:04:35,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:04:35" (1/1) ... [2022-12-12 20:04:35,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352b2020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:35, skipping insertion in model container [2022-12-12 20:04:35,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:04:35" (1/1) ... [2022-12-12 20:04:35,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 20:04:35,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 20:04:36,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,061 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-12-12 20:04:36,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:04:36,083 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 20:04:36,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 20:04:36,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 20:04:36,118 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2507,2520] [2022-12-12 20:04:36,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:04:36,131 INFO L208 MainTranslator]: Completed translation [2022-12-12 20:04:36,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36 WrapperNode [2022-12-12 20:04:36,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 20:04:36,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 20:04:36,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 20:04:36,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 20:04:36,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,175 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2022-12-12 20:04:36,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 20:04:36,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 20:04:36,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 20:04:36,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 20:04:36,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,208 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 20:04:36,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 20:04:36,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 20:04:36,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 20:04:36,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (1/1) ... [2022-12-12 20:04:36,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:04:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:04:36,237 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) [2022-12-12 20:04:36,251 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 [2022-12-12 20:04:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 20:04:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 20:04:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 20:04:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 20:04:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 20:04:36,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 20:04:36,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 20:04:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 20:04:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 20:04:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 20:04:36,276 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 20:04:36,364 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 20:04:36,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 20:04:36,549 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 20:04:36,605 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 20:04:36,606 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 20:04:36,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:04:36 BoogieIcfgContainer [2022-12-12 20:04:36,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 20:04:36,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 20:04:36,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 20:04:36,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 20:04:36,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 08:04:35" (1/3) ... [2022-12-12 20:04:36,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee763f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:04:36, skipping insertion in model container [2022-12-12 20:04:36,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:04:36" (2/3) ... [2022-12-12 20:04:36,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee763f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:04:36, skipping insertion in model container [2022-12-12 20:04:36,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:04:36" (3/3) ... [2022-12-12 20:04:36,617 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2022-12-12 20:04:36,630 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 20:04:36,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 20:04:36,631 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 20:04:36,705 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-12 20:04:36,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 123 transitions, 278 flow [2022-12-12 20:04:36,807 INFO L130 PetriNetUnfolder]: 9/119 cut-off events. [2022-12-12 20:04:36,808 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 20:04:36,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 9/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-12-12 20:04:36,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 123 transitions, 278 flow [2022-12-12 20:04:36,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 238 flow [2022-12-12 20:04:36,819 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 20:04:36,854 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 107 transitions, 238 flow [2022-12-12 20:04:36,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 107 transitions, 238 flow [2022-12-12 20:04:36,894 INFO L130 PetriNetUnfolder]: 9/107 cut-off events. [2022-12-12 20:04:36,894 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 20:04:36,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 107 events. 9/107 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 93 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-12-12 20:04:36,899 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 107 transitions, 238 flow [2022-12-12 20:04:36,899 INFO L226 LiptonReduction]: Number of co-enabled transitions 2520 [2022-12-12 20:04:39,680 INFO L241 LiptonReduction]: Total number of compositions: 78 [2022-12-12 20:04:39,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 20:04:39,696 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;@646b7f8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 20:04:39,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 20:04:39,701 INFO L130 PetriNetUnfolder]: 4/28 cut-off events. [2022-12-12 20:04:39,701 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 20:04:39,701 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:39,702 INFO L214 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] [2022-12-12 20:04:39,702 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)] === [2022-12-12 20:04:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 351158390, now seen corresponding path program 1 times [2022-12-12 20:04:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:39,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754668712] [2022-12-12 20:04:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:39,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754668712] [2022-12-12 20:04:39,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754668712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:04:39,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:04:39,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 20:04:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632407305] [2022-12-12 20:04:39,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:04:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 20:04:40,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 20:04:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 20:04:40,043 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2022-12-12 20:04:40,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:40,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:40,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2022-12-12 20:04:40,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:40,270 INFO L130 PetriNetUnfolder]: 1537/1954 cut-off events. [2022-12-12 20:04:40,270 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2022-12-12 20:04:40,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1954 events. 1537/1954 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6328 event pairs, 141 based on Foata normal form. 1/1139 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2022-12-12 20:04:40,286 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 41 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2022-12-12 20:04:40,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 241 flow [2022-12-12 20:04:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:04:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:04:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-12-12 20:04:40,296 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2022-12-12 20:04:40,299 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2022-12-12 20:04:40,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 51 transitions, 241 flow [2022-12-12 20:04:40,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 50 transitions, 234 flow [2022-12-12 20:04:40,309 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 50 transitions, 234 flow [2022-12-12 20:04:40,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:40,309 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:40,309 INFO L214 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] [2022-12-12 20:04:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 20:04:40,310 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)] === [2022-12-12 20:04:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:40,316 INFO L85 PathProgramCache]: Analyzing trace with hash -53156906, now seen corresponding path program 1 times [2022-12-12 20:04:40,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:40,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966777820] [2022-12-12 20:04:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:40,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966777820] [2022-12-12 20:04:40,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966777820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:04:40,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:04:40,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:04:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104245253] [2022-12-12 20:04:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:04:40,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:04:40,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:04:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:04:40,451 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:40,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 50 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:40,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:40,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:40,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:40,721 INFO L130 PetriNetUnfolder]: 2531/3320 cut-off events. [2022-12-12 20:04:40,721 INFO L131 PetriNetUnfolder]: For 661/695 co-relation queries the response was YES. [2022-12-12 20:04:40,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9944 conditions, 3320 events. 2531/3320 cut-off events. For 661/695 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13414 event pairs, 169 based on Foata normal form. 2/2117 useless extension candidates. Maximal degree in co-relation 7400. Up to 2593 conditions per place. [2022-12-12 20:04:40,739 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 132 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2022-12-12 20:04:40,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 140 transitions, 935 flow [2022-12-12 20:04:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2022-12-12 20:04:40,742 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6068965517241379 [2022-12-12 20:04:40,742 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2022-12-12 20:04:40,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 140 transitions, 935 flow [2022-12-12 20:04:40,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 140 transitions, 935 flow [2022-12-12 20:04:40,758 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 140 transitions, 935 flow [2022-12-12 20:04:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:40,758 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:40,758 INFO L214 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] [2022-12-12 20:04:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 20:04:40,759 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)] === [2022-12-12 20:04:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash 337755006, now seen corresponding path program 2 times [2022-12-12 20:04:40,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:40,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662813919] [2022-12-12 20:04:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:40,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662813919] [2022-12-12 20:04:40,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662813919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:04:40,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157674694] [2022-12-12 20:04:40,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:04:40,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:04:40,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:04:40,835 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) [2022-12-12 20:04:40,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 20:04:40,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:04:40,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:04:40,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:04:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:04:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:40,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:04:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:41,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157674694] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:04:41,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:04:41,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-12 20:04:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234105108] [2022-12-12 20:04:41,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:04:41,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 20:04:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 20:04:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 20:04:41,019 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:41,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 140 transitions, 935 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:41,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:41,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:41,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:41,465 INFO L130 PetriNetUnfolder]: 4039/5249 cut-off events. [2022-12-12 20:04:41,465 INFO L131 PetriNetUnfolder]: For 1162/1189 co-relation queries the response was YES. [2022-12-12 20:04:41,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21071 conditions, 5249 events. 4039/5249 cut-off events. For 1162/1189 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 22595 event pairs, 303 based on Foata normal form. 1/3312 useless extension candidates. Maximal degree in co-relation 19417. Up to 4465 conditions per place. [2022-12-12 20:04:41,503 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 250 selfloop transitions, 11 changer transitions 0/263 dead transitions. [2022-12-12 20:04:41,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 263 transitions, 2269 flow [2022-12-12 20:04:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2022-12-12 20:04:41,505 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2022-12-12 20:04:41,506 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2022-12-12 20:04:41,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 263 transitions, 2269 flow [2022-12-12 20:04:41,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 263 transitions, 2269 flow [2022-12-12 20:04:41,531 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 263 transitions, 2269 flow [2022-12-12 20:04:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:41,532 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:41,532 INFO L214 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] [2022-12-12 20:04:41,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 20:04:41,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:04:41,739 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)] === [2022-12-12 20:04:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash -793381021, now seen corresponding path program 1 times [2022-12-12 20:04:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:41,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168446556] [2022-12-12 20:04:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:41,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:41,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:41,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168446556] [2022-12-12 20:04:41,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168446556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:04:41,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:04:41,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:04:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86358267] [2022-12-12 20:04:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:04:41,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:04:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:04:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:04:41,821 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:41,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 263 transitions, 2269 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:41,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:41,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:41,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:42,467 INFO L130 PetriNetUnfolder]: 6147/8246 cut-off events. [2022-12-12 20:04:42,467 INFO L131 PetriNetUnfolder]: For 8858/9404 co-relation queries the response was YES. [2022-12-12 20:04:42,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38917 conditions, 8246 events. 6147/8246 cut-off events. For 8858/9404 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37426 event pairs, 470 based on Foata normal form. 168/5823 useless extension candidates. Maximal degree in co-relation 35632. Up to 6152 conditions per place. [2022-12-12 20:04:42,513 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 642 selfloop transitions, 38 changer transitions 29/715 dead transitions. [2022-12-12 20:04:42,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 715 transitions, 7570 flow [2022-12-12 20:04:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2022-12-12 20:04:42,514 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2022-12-12 20:04:42,515 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2022-12-12 20:04:42,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 715 transitions, 7570 flow [2022-12-12 20:04:42,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 686 transitions, 7250 flow [2022-12-12 20:04:42,556 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 686 transitions, 7250 flow [2022-12-12 20:04:42,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:42,556 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:42,556 INFO L214 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] [2022-12-12 20:04:42,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 20:04:42,556 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)] === [2022-12-12 20:04:42,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1535623759, now seen corresponding path program 1 times [2022-12-12 20:04:42,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:42,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512131849] [2022-12-12 20:04:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:42,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:42,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512131849] [2022-12-12 20:04:42,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512131849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:04:42,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:04:42,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:04:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012243475] [2022-12-12 20:04:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:04:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:04:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:04:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:04:42,637 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:42,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 686 transitions, 7250 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:42,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:42,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:42,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:43,811 INFO L130 PetriNetUnfolder]: 9330/12520 cut-off events. [2022-12-12 20:04:43,812 INFO L131 PetriNetUnfolder]: For 17575/18812 co-relation queries the response was YES. [2022-12-12 20:04:43,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71853 conditions, 12520 events. 9330/12520 cut-off events. For 17575/18812 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 61194 event pairs, 440 based on Foata normal form. 316/8804 useless extension candidates. Maximal degree in co-relation 69041. Up to 10041 conditions per place. [2022-12-12 20:04:43,887 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 1437 selfloop transitions, 99 changer transitions 73/1615 dead transitions. [2022-12-12 20:04:43,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 1615 transitions, 20289 flow [2022-12-12 20:04:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2022-12-12 20:04:43,890 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6068965517241379 [2022-12-12 20:04:43,892 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2022-12-12 20:04:43,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 1615 transitions, 20289 flow [2022-12-12 20:04:43,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 1542 transitions, 19353 flow [2022-12-12 20:04:43,965 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 1542 transitions, 19353 flow [2022-12-12 20:04:43,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:43,965 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:43,965 INFO L214 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] [2022-12-12 20:04:43,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 20:04:43,965 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)] === [2022-12-12 20:04:43,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2034658999, now seen corresponding path program 2 times [2022-12-12 20:04:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:43,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185443742] [2022-12-12 20:04:43,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:43,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:44,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:44,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185443742] [2022-12-12 20:04:44,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185443742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:04:44,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914611612] [2022-12-12 20:04:44,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:04:44,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:04:44,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:04:44,053 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) [2022-12-12 20:04:44,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 20:04:44,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:04:44,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:04:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:04:44,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:04:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:44,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:04:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:44,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914611612] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:04:44,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:04:44,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-12 20:04:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094242840] [2022-12-12 20:04:44,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:04:44,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 20:04:44,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 20:04:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 20:04:44,200 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:44,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 1542 transitions, 19353 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:44,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:44,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:44,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:45,894 INFO L130 PetriNetUnfolder]: 9852/13166 cut-off events. [2022-12-12 20:04:45,894 INFO L131 PetriNetUnfolder]: For 24960/26699 co-relation queries the response was YES. [2022-12-12 20:04:45,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88193 conditions, 13166 events. 9852/13166 cut-off events. For 24960/26699 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 64277 event pairs, 216 based on Foata normal form. 618/9626 useless extension candidates. Maximal degree in co-relation 84902. Up to 10807 conditions per place. [2022-12-12 20:04:45,961 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 1765 selfloop transitions, 59 changer transitions 0/1830 dead transitions. [2022-12-12 20:04:45,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 1830 transitions, 26589 flow [2022-12-12 20:04:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2022-12-12 20:04:45,962 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6068965517241379 [2022-12-12 20:04:45,962 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2022-12-12 20:04:45,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 1830 transitions, 26589 flow [2022-12-12 20:04:46,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 1830 transitions, 26589 flow [2022-12-12 20:04:46,026 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 1830 transitions, 26589 flow [2022-12-12 20:04:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:46,026 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:46,026 INFO L214 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] [2022-12-12 20:04:46,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 20:04:46,233 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,SelfDestructingSolverStorable5 [2022-12-12 20:04:46,234 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)] === [2022-12-12 20:04:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1883175054, now seen corresponding path program 1 times [2022-12-12 20:04:46,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:46,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146847257] [2022-12-12 20:04:46,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:46,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:46,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:46,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146847257] [2022-12-12 20:04:46,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146847257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:04:46,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:04:46,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:04:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989256263] [2022-12-12 20:04:46,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:04:46,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:04:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:04:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:04:46,304 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:46,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 1830 transitions, 26589 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:46,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:46,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:46,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:48,426 INFO L130 PetriNetUnfolder]: 10434/14093 cut-off events. [2022-12-12 20:04:48,426 INFO L131 PetriNetUnfolder]: For 34809/37632 co-relation queries the response was YES. [2022-12-12 20:04:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107767 conditions, 14093 events. 10434/14093 cut-off events. For 34809/37632 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 71249 event pairs, 98 based on Foata normal form. 897/10665 useless extension candidates. Maximal degree in co-relation 103679. Up to 11412 conditions per place. [2022-12-12 20:04:48,502 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 2163 selfloop transitions, 143 changer transitions 131/2444 dead transitions. [2022-12-12 20:04:48,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 2444 transitions, 40321 flow [2022-12-12 20:04:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2022-12-12 20:04:48,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6344827586206897 [2022-12-12 20:04:48,504 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2022-12-12 20:04:48,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 2444 transitions, 40321 flow [2022-12-12 20:04:48,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 2313 transitions, 38138 flow [2022-12-12 20:04:48,581 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 2313 transitions, 38138 flow [2022-12-12 20:04:48,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:48,581 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:48,581 INFO L214 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] [2022-12-12 20:04:48,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 20:04:48,581 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)] === [2022-12-12 20:04:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1280647857, now seen corresponding path program 2 times [2022-12-12 20:04:48,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:48,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056968292] [2022-12-12 20:04:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:48,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:48,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:48,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056968292] [2022-12-12 20:04:48,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056968292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:04:48,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222093985] [2022-12-12 20:04:48,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:04:48,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:04:48,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:04:48,645 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) [2022-12-12 20:04:48,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 20:04:48,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:04:48,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:04:48,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:04:48,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:04:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:48,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:04:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:48,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222093985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:04:48,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:04:48,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-12 20:04:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063309535] [2022-12-12 20:04:48,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:04:48,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 20:04:48,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 20:04:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 20:04:48,793 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:48,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 2313 transitions, 38138 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:48,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:48,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:51,485 INFO L130 PetriNetUnfolder]: 10788/14463 cut-off events. [2022-12-12 20:04:51,486 INFO L131 PetriNetUnfolder]: For 40942/43663 co-relation queries the response was YES. [2022-12-12 20:04:51,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124604 conditions, 14463 events. 10788/14463 cut-off events. For 40942/43663 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 71687 event pairs, 24 based on Foata normal form. 621/10743 useless extension candidates. Maximal degree in co-relation 120110. Up to 12154 conditions per place. [2022-12-12 20:04:51,578 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 2592 selfloop transitions, 116 changer transitions 0/2715 dead transitions. [2022-12-12 20:04:51,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 2715 transitions, 50155 flow [2022-12-12 20:04:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:51,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2022-12-12 20:04:51,580 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2022-12-12 20:04:51,580 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2022-12-12 20:04:51,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 2715 transitions, 50155 flow [2022-12-12 20:04:51,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 2715 transitions, 50155 flow [2022-12-12 20:04:51,675 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 2715 transitions, 50155 flow [2022-12-12 20:04:51,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:51,675 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:51,676 INFO L214 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] [2022-12-12 20:04:51,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 20:04:51,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:04:51,876 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)] === [2022-12-12 20:04:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1520248971, now seen corresponding path program 3 times [2022-12-12 20:04:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:51,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966130241] [2022-12-12 20:04:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:51,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:51,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966130241] [2022-12-12 20:04:51,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966130241] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:04:51,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146501280] [2022-12-12 20:04:51,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:04:51,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:04:51,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:04:51,946 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) [2022-12-12 20:04:51,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 20:04:52,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:04:52,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:04:52,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:04:52,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:04:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:52,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:04:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:52,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146501280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:04:52,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:04:52,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 20:04:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758376557] [2022-12-12 20:04:52,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:04:52,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 20:04:52,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 20:04:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 20:04:52,076 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:52,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 2715 transitions, 50155 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:52,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:52,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:52,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:04:56,020 INFO L130 PetriNetUnfolder]: 13006/17536 cut-off events. [2022-12-12 20:04:56,020 INFO L131 PetriNetUnfolder]: For 50376/53114 co-relation queries the response was YES. [2022-12-12 20:04:56,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168102 conditions, 17536 events. 13006/17536 cut-off events. For 50376/53114 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 89839 event pairs, 30 based on Foata normal form. 571/12784 useless extension candidates. Maximal degree in co-relation 162070. Up to 14712 conditions per place. [2022-12-12 20:04:56,137 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 3269 selfloop transitions, 197 changer transitions 0/3473 dead transitions. [2022-12-12 20:04:56,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 3473 transitions, 71061 flow [2022-12-12 20:04:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:04:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:04:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2022-12-12 20:04:56,138 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6413793103448275 [2022-12-12 20:04:56,139 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2022-12-12 20:04:56,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 3473 transitions, 71061 flow [2022-12-12 20:04:56,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 3473 transitions, 71061 flow [2022-12-12 20:04:56,249 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 3473 transitions, 71061 flow [2022-12-12 20:04:56,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:56,249 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:04:56,249 INFO L214 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] [2022-12-12 20:04:56,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 20:04:56,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:04:56,454 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)] === [2022-12-12 20:04:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:04:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash 383594673, now seen corresponding path program 3 times [2022-12-12 20:04:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:04:56,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569930983] [2022-12-12 20:04:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:04:56,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:04:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:04:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:04:56,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:04:56,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569930983] [2022-12-12 20:04:56,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569930983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:04:56,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:04:56,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:04:56,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749773061] [2022-12-12 20:04:56,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:04:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:04:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:04:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:04:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:04:56,522 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:04:56,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 3473 transitions, 71061 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:04:56,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:04:56,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:04:56,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:01,313 INFO L130 PetriNetUnfolder]: 12214/16472 cut-off events. [2022-12-12 20:05:01,313 INFO L131 PetriNetUnfolder]: For 61277/63873 co-relation queries the response was YES. [2022-12-12 20:05:01,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173320 conditions, 16472 events. 12214/16472 cut-off events. For 61277/63873 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 83975 event pairs, 32 based on Foata normal form. 612/12185 useless extension candidates. Maximal degree in co-relation 167508. Up to 13707 conditions per place. [2022-12-12 20:05:01,443 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 2943 selfloop transitions, 259 changer transitions 76/3285 dead transitions. [2022-12-12 20:05:01,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 3285 transitions, 73761 flow [2022-12-12 20:05:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 20:05:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 20:05:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2022-12-12 20:05:01,444 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5919540229885057 [2022-12-12 20:05:01,445 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2022-12-12 20:05:01,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 3285 transitions, 73761 flow [2022-12-12 20:05:01,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 3209 transitions, 72035 flow [2022-12-12 20:05:01,566 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 3209 transitions, 72035 flow [2022-12-12 20:05:01,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:01,566 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:01,566 INFO L214 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] [2022-12-12 20:05:01,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 20:05:01,566 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)] === [2022-12-12 20:05:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2128331647, now seen corresponding path program 4 times [2022-12-12 20:05:01,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:01,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665175137] [2022-12-12 20:05:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:01,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:01,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:01,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665175137] [2022-12-12 20:05:01,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665175137] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:01,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251466122] [2022-12-12 20:05:01,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:05:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:01,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:01,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 20:05:01,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:05:01,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:01,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:05:01,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:01,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:01,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251466122] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:01,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:01,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 20:05:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979993895] [2022-12-12 20:05:01,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 20:05:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 20:05:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-12 20:05:01,733 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:01,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 3209 transitions, 72035 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:01,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:01,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:01,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:06,916 INFO L130 PetriNetUnfolder]: 13469/18098 cut-off events. [2022-12-12 20:05:06,916 INFO L131 PetriNetUnfolder]: For 64658/67565 co-relation queries the response was YES. [2022-12-12 20:05:06,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207953 conditions, 18098 events. 13469/18098 cut-off events. For 64658/67565 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 92295 event pairs, 32 based on Foata normal form. 671/13531 useless extension candidates. Maximal degree in co-relation 201110. Up to 15397 conditions per place. [2022-12-12 20:05:07,061 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 3282 selfloop transitions, 226 changer transitions 0/3515 dead transitions. [2022-12-12 20:05:07,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 3515 transitions, 85939 flow [2022-12-12 20:05:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 20:05:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 20:05:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2022-12-12 20:05:07,065 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5991379310344828 [2022-12-12 20:05:07,065 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 46 predicate places. [2022-12-12 20:05:07,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 3515 transitions, 85939 flow [2022-12-12 20:05:07,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 3515 transitions, 85939 flow [2022-12-12 20:05:07,203 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 3515 transitions, 85939 flow [2022-12-12 20:05:07,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:07,203 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:07,204 INFO L214 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] [2022-12-12 20:05:07,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:07,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-12 20:05:07,404 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)] === [2022-12-12 20:05:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1835438031, now seen corresponding path program 4 times [2022-12-12 20:05:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:07,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061578725] [2022-12-12 20:05:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:07,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061578725] [2022-12-12 20:05:07,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061578725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:05:07,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:05:07,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:05:07,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008590726] [2022-12-12 20:05:07,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:05:07,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:05:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:05:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:05:07,463 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:07,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 3515 transitions, 85939 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:07,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:07,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:07,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:12,875 INFO L130 PetriNetUnfolder]: 13237/17866 cut-off events. [2022-12-12 20:05:12,876 INFO L131 PetriNetUnfolder]: For 87719/90672 co-relation queries the response was YES. [2022-12-12 20:05:12,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222177 conditions, 17866 events. 13237/17866 cut-off events. For 87719/90672 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 92246 event pairs, 24 based on Foata normal form. 613/13399 useless extension candidates. Maximal degree in co-relation 214930. Up to 15170 conditions per place. [2022-12-12 20:05:13,005 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 3143 selfloop transitions, 249 changer transitions 76/3475 dead transitions. [2022-12-12 20:05:13,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 3475 transitions, 91915 flow [2022-12-12 20:05:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 20:05:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 20:05:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2022-12-12 20:05:13,006 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2022-12-12 20:05:13,006 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2022-12-12 20:05:13,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 3475 transitions, 91915 flow [2022-12-12 20:05:13,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 3399 transitions, 89885 flow [2022-12-12 20:05:13,132 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 3399 transitions, 89885 flow [2022-12-12 20:05:13,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:13,132 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:13,132 INFO L214 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] [2022-12-12 20:05:13,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 20:05:13,133 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)] === [2022-12-12 20:05:13,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash 420436813, now seen corresponding path program 5 times [2022-12-12 20:05:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:13,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050972979] [2022-12-12 20:05:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:13,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:13,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:13,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050972979] [2022-12-12 20:05:13,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050972979] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:13,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145455090] [2022-12-12 20:05:13,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:05:13,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:13,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:13,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:13,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 20:05:13,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:05:13,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:13,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:05:13,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:13,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 20:05:13,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145455090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:05:13,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 20:05:13,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-12 20:05:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873256802] [2022-12-12 20:05:13,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:05:13,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 20:05:13,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 20:05:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 20:05:13,317 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2022-12-12 20:05:13,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 3399 transitions, 89885 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:13,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:13,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2022-12-12 20:05:13,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:17,127 INFO L130 PetriNetUnfolder]: 9341/12751 cut-off events. [2022-12-12 20:05:17,127 INFO L131 PetriNetUnfolder]: For 87424/89807 co-relation queries the response was YES. [2022-12-12 20:05:17,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170088 conditions, 12751 events. 9341/12751 cut-off events. For 87424/89807 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 64658 event pairs, 20 based on Foata normal form. 729/10004 useless extension candidates. Maximal degree in co-relation 165024. Up to 10638 conditions per place. [2022-12-12 20:05:17,220 INFO L137 encePairwiseOnDemand]: 26/29 looper letters, 2219 selfloop transitions, 84 changer transitions 218/2536 dead transitions. [2022-12-12 20:05:17,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 2536 transitions, 72081 flow [2022-12-12 20:05:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:05:17,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:05:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-12-12 20:05:17,221 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2022-12-12 20:05:17,221 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 53 predicate places. [2022-12-12 20:05:17,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 2536 transitions, 72081 flow [2022-12-12 20:05:17,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 2318 transitions, 65869 flow [2022-12-12 20:05:17,312 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 2318 transitions, 65869 flow [2022-12-12 20:05:17,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:17,312 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:17,312 INFO L214 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] [2022-12-12 20:05:17,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:17,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:17,513 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)] === [2022-12-12 20:05:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:17,513 INFO L85 PathProgramCache]: Analyzing trace with hash -117535827, now seen corresponding path program 5 times [2022-12-12 20:05:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:17,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526142011] [2022-12-12 20:05:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:17,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526142011] [2022-12-12 20:05:17,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526142011] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424958524] [2022-12-12 20:05:17,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:05:17,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:17,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:17,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:17,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 20:05:17,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:05:17,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:17,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:05:17,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:17,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 20:05:17,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424958524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:05:17,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 20:05:17,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-12 20:05:17,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382571995] [2022-12-12 20:05:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:05:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 20:05:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 20:05:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 20:05:17,672 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2022-12-12 20:05:17,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 2318 transitions, 65869 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:17,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:17,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2022-12-12 20:05:17,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:19,837 INFO L130 PetriNetUnfolder]: 6421/8966 cut-off events. [2022-12-12 20:05:19,838 INFO L131 PetriNetUnfolder]: For 86796/88625 co-relation queries the response was YES. [2022-12-12 20:05:19,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127429 conditions, 8966 events. 6421/8966 cut-off events. For 86796/88625 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 45026 event pairs, 0 based on Foata normal form. 475/7177 useless extension candidates. Maximal degree in co-relation 123003. Up to 7280 conditions per place. [2022-12-12 20:05:19,911 INFO L137 encePairwiseOnDemand]: 26/29 looper letters, 1841 selfloop transitions, 98 changer transitions 141/2093 dead transitions. [2022-12-12 20:05:19,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 2093 transitions, 63701 flow [2022-12-12 20:05:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:05:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:05:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-12-12 20:05:19,912 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2022-12-12 20:05:19,912 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2022-12-12 20:05:19,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 2093 transitions, 63701 flow [2022-12-12 20:05:19,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 1952 transitions, 59404 flow [2022-12-12 20:05:19,985 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 1952 transitions, 59404 flow [2022-12-12 20:05:19,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:19,986 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:19,986 INFO L214 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] [2022-12-12 20:05:19,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:20,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:20,186 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)] === [2022-12-12 20:05:20,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1506450442, now seen corresponding path program 2 times [2022-12-12 20:05:20,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:20,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555723253] [2022-12-12 20:05:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:20,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:20,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:20,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555723253] [2022-12-12 20:05:20,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555723253] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:20,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459027509] [2022-12-12 20:05:20,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:05:20,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:20,231 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:20,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 20:05:20,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:05:20,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:05:20,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:20,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:20,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459027509] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:20,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:20,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-12 20:05:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416742099] [2022-12-12 20:05:20,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:20,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 20:05:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 20:05:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-12 20:05:20,351 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:20,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 1952 transitions, 59404 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:20,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:20,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:20,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:22,602 INFO L130 PetriNetUnfolder]: 6430/8889 cut-off events. [2022-12-12 20:05:22,603 INFO L131 PetriNetUnfolder]: For 88461/91411 co-relation queries the response was YES. [2022-12-12 20:05:22,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135080 conditions, 8889 events. 6430/8889 cut-off events. For 88461/91411 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 43439 event pairs, 0 based on Foata normal form. 778/7511 useless extension candidates. Maximal degree in co-relation 130672. Up to 7432 conditions per place. [2022-12-12 20:05:22,679 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 1942 selfloop transitions, 123 changer transitions 0/2073 dead transitions. [2022-12-12 20:05:22,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 2073 transitions, 67151 flow [2022-12-12 20:05:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:05:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:05:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2022-12-12 20:05:22,680 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2022-12-12 20:05:22,681 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 57 predicate places. [2022-12-12 20:05:22,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 2073 transitions, 67151 flow [2022-12-12 20:05:22,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 2073 transitions, 67151 flow [2022-12-12 20:05:22,767 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 2073 transitions, 67151 flow [2022-12-12 20:05:22,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:22,767 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:22,767 INFO L214 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] [2022-12-12 20:05:22,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:22,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 20:05:22,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:22,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:22,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1916379338, now seen corresponding path program 3 times [2022-12-12 20:05:22,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:22,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919450678] [2022-12-12 20:05:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:23,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919450678] [2022-12-12 20:05:23,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919450678] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:23,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043610751] [2022-12-12 20:05:23,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:05:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:23,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:23,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 20:05:23,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:05:23,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:23,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:05:23,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:23,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:23,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043610751] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:23,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:23,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 20:05:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509535582] [2022-12-12 20:05:23,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 20:05:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 20:05:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-12 20:05:23,207 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:23,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 2073 transitions, 67151 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:23,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:23,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:23,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:26,013 INFO L130 PetriNetUnfolder]: 8231/11479 cut-off events. [2022-12-12 20:05:26,013 INFO L131 PetriNetUnfolder]: For 134336/137858 co-relation queries the response was YES. [2022-12-12 20:05:26,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186230 conditions, 11479 events. 8231/11479 cut-off events. For 134336/137858 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 59953 event pairs, 0 based on Foata normal form. 1132/10026 useless extension candidates. Maximal degree in co-relation 180877. Up to 9489 conditions per place. [2022-12-12 20:05:26,115 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 2635 selfloop transitions, 260 changer transitions 0/2903 dead transitions. [2022-12-12 20:05:26,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 2903 transitions, 99990 flow [2022-12-12 20:05:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 20:05:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 20:05:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2022-12-12 20:05:26,116 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2022-12-12 20:05:26,117 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2022-12-12 20:05:26,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 2903 transitions, 99990 flow [2022-12-12 20:05:26,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 2903 transitions, 99990 flow [2022-12-12 20:05:26,233 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 2903 transitions, 99990 flow [2022-12-12 20:05:26,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:26,233 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:26,233 INFO L214 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] [2022-12-12 20:05:26,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-12 20:05:26,434 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:26,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash -423130096, now seen corresponding path program 3 times [2022-12-12 20:05:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:26,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546419700] [2022-12-12 20:05:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:26,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:26,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546419700] [2022-12-12 20:05:26,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546419700] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:26,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410188305] [2022-12-12 20:05:26,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:05:26,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:26,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:26,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:26,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 20:05:26,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:05:26,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:05:26,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:26,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:26,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410188305] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:26,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:26,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 20:05:26,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379494769] [2022-12-12 20:05:26,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:26,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 20:05:26,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:26,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 20:05:26,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 20:05:26,614 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:26,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 2903 transitions, 99990 flow. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:26,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:26,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:26,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:31,010 INFO L130 PetriNetUnfolder]: 8953/12573 cut-off events. [2022-12-12 20:05:31,010 INFO L131 PetriNetUnfolder]: For 157634/160786 co-relation queries the response was YES. [2022-12-12 20:05:31,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215828 conditions, 12573 events. 8953/12573 cut-off events. For 157634/160786 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 67404 event pairs, 0 based on Foata normal form. 713/10479 useless extension candidates. Maximal degree in co-relation 209418. Up to 10477 conditions per place. [2022-12-12 20:05:31,112 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 2991 selfloop transitions, 189 changer transitions 0/3188 dead transitions. [2022-12-12 20:05:31,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 3188 transitions, 116184 flow [2022-12-12 20:05:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:05:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:05:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2022-12-12 20:05:31,113 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6275862068965518 [2022-12-12 20:05:31,113 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2022-12-12 20:05:31,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 3188 transitions, 116184 flow [2022-12-12 20:05:31,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 3188 transitions, 116184 flow [2022-12-12 20:05:31,239 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 3188 transitions, 116184 flow [2022-12-12 20:05:31,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:31,239 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:31,239 INFO L214 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] [2022-12-12 20:05:31,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-12 20:05:31,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 20:05:31,442 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:31,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -452669938, now seen corresponding path program 4 times [2022-12-12 20:05:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:31,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610102110] [2022-12-12 20:05:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:31,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610102110] [2022-12-12 20:05:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610102110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:05:31,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:05:31,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:05:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728795920] [2022-12-12 20:05:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:05:31,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:05:31,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:05:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:05:31,525 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:31,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 3188 transitions, 116184 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:31,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:31,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:31,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:35,792 INFO L130 PetriNetUnfolder]: 8217/11399 cut-off events. [2022-12-12 20:05:35,792 INFO L131 PetriNetUnfolder]: For 164008/168184 co-relation queries the response was YES. [2022-12-12 20:05:35,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206272 conditions, 11399 events. 8217/11399 cut-off events. For 164008/168184 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 58779 event pairs, 0 based on Foata normal form. 886/9671 useless extension candidates. Maximal degree in co-relation 201066. Up to 9415 conditions per place. [2022-12-12 20:05:35,901 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 2503 selfloop transitions, 155 changer transitions 154/2820 dead transitions. [2022-12-12 20:05:35,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 2820 transitions, 108284 flow [2022-12-12 20:05:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:05:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:05:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2022-12-12 20:05:35,902 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2022-12-12 20:05:35,902 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2022-12-12 20:05:35,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 2820 transitions, 108284 flow [2022-12-12 20:05:36,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 2666 transitions, 102339 flow [2022-12-12 20:05:36,041 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 2666 transitions, 102339 flow [2022-12-12 20:05:36,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:36,041 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:36,041 INFO L214 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] [2022-12-12 20:05:36,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 20:05:36,041 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1154833078, now seen corresponding path program 5 times [2022-12-12 20:05:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104899787] [2022-12-12 20:05:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:36,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104899787] [2022-12-12 20:05:36,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104899787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:05:36,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:05:36,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:05:36,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919766578] [2022-12-12 20:05:36,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:05:36,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:05:36,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:36,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:05:36,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:05:36,082 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:36,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 2666 transitions, 102339 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:36,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:36,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:36,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:39,601 INFO L130 PetriNetUnfolder]: 7891/10944 cut-off events. [2022-12-12 20:05:39,601 INFO L131 PetriNetUnfolder]: For 173500/178366 co-relation queries the response was YES. [2022-12-12 20:05:39,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208275 conditions, 10944 events. 7891/10944 cut-off events. For 173500/178366 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 55884 event pairs, 0 based on Foata normal form. 953/9387 useless extension candidates. Maximal degree in co-relation 202843. Up to 9284 conditions per place. [2022-12-12 20:05:39,714 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 2287 selfloop transitions, 183 changer transitions 154/2632 dead transitions. [2022-12-12 20:05:39,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 2632 transitions, 106295 flow [2022-12-12 20:05:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 20:05:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 20:05:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2022-12-12 20:05:39,715 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2022-12-12 20:05:39,716 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2022-12-12 20:05:39,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 2632 transitions, 106295 flow [2022-12-12 20:05:39,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 2478 transitions, 100042 flow [2022-12-12 20:05:39,841 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 2478 transitions, 100042 flow [2022-12-12 20:05:39,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:39,842 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:39,842 INFO L214 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] [2022-12-12 20:05:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-12 20:05:39,842 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:39,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1184372920, now seen corresponding path program 6 times [2022-12-12 20:05:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:39,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99024472] [2022-12-12 20:05:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99024472] [2022-12-12 20:05:39,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99024472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659416724] [2022-12-12 20:05:39,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:05:39,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:39,919 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:39,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 20:05:40,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 20:05:40,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:40,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:05:40,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:40,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:40,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659416724] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:40,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:40,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 20:05:40,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805318688] [2022-12-12 20:05:40,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:40,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 20:05:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 20:05:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-12 20:05:40,060 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:40,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 2478 transitions, 100042 flow. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:40,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:40,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:40,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:43,374 INFO L130 PetriNetUnfolder]: 7465/10252 cut-off events. [2022-12-12 20:05:43,374 INFO L131 PetriNetUnfolder]: For 204299/208797 co-relation queries the response was YES. [2022-12-12 20:05:43,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204652 conditions, 10252 events. 7465/10252 cut-off events. For 204299/208797 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 50920 event pairs, 0 based on Foata normal form. 943/8943 useless extension candidates. Maximal degree in co-relation 199829. Up to 8933 conditions per place. [2022-12-12 20:05:43,583 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 2153 selfloop transitions, 253 changer transitions 0/2414 dead transitions. [2022-12-12 20:05:43,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 2414 transitions, 102168 flow [2022-12-12 20:05:43,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 20:05:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 20:05:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2022-12-12 20:05:43,584 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47413793103448276 [2022-12-12 20:05:43,585 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 81 predicate places. [2022-12-12 20:05:43,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 2414 transitions, 102168 flow [2022-12-12 20:05:43,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 2414 transitions, 102168 flow [2022-12-12 20:05:43,689 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 2414 transitions, 102168 flow [2022-12-12 20:05:43,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:43,689 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:43,689 INFO L214 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] [2022-12-12 20:05:43,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:43,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:43,894 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:43,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2112162756, now seen corresponding path program 4 times [2022-12-12 20:05:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:43,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084689807] [2022-12-12 20:05:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:43,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084689807] [2022-12-12 20:05:43,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084689807] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:43,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125403550] [2022-12-12 20:05:43,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:05:43,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:43,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:43,936 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:43,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 20:05:44,003 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:05:44,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:44,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 20:05:44,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:44,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:44,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125403550] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:44,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:44,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 20:05:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794833914] [2022-12-12 20:05:44,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 20:05:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 20:05:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 20:05:44,051 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:05:44,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 2414 transitions, 102168 flow. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:44,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:44,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:05:44,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:47,213 INFO L130 PetriNetUnfolder]: 7111/9710 cut-off events. [2022-12-12 20:05:47,213 INFO L131 PetriNetUnfolder]: For 216086/220585 co-relation queries the response was YES. [2022-12-12 20:05:47,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202999 conditions, 9710 events. 7111/9710 cut-off events. For 216086/220585 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 47418 event pairs, 0 based on Foata normal form. 729/8405 useless extension candidates. Maximal degree in co-relation 198821. Up to 8445 conditions per place. [2022-12-12 20:05:47,335 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 2054 selfloop transitions, 164 changer transitions 0/2226 dead transitions. [2022-12-12 20:05:47,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 2226 transitions, 98567 flow [2022-12-12 20:05:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:05:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:05:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2022-12-12 20:05:47,336 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.496551724137931 [2022-12-12 20:05:47,336 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2022-12-12 20:05:47,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 2226 transitions, 98567 flow [2022-12-12 20:05:47,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 2226 transitions, 98567 flow [2022-12-12 20:05:47,439 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 2226 transitions, 98567 flow [2022-12-12 20:05:47,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:47,439 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:47,439 INFO L214 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] [2022-12-12 20:05:47,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:47,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-12 20:05:47,644 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781916, now seen corresponding path program 1 times [2022-12-12 20:05:47,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:47,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698064760] [2022-12-12 20:05:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:47,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:47,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698064760] [2022-12-12 20:05:47,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698064760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:47,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583628894] [2022-12-12 20:05:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:47,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:47,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:47,745 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:47,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 20:05:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:47,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 20:05:47,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:47,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:47,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583628894] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:47,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:47,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 5 [2022-12-12 20:05:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78481239] [2022-12-12 20:05:47,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 20:05:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 20:05:47,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 20:05:47,980 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2022-12-12 20:05:47,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 2226 transitions, 98567 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:47,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:47,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2022-12-12 20:05:47,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:05:55,033 INFO L130 PetriNetUnfolder]: 16882/23225 cut-off events. [2022-12-12 20:05:55,033 INFO L131 PetriNetUnfolder]: For 479908/483950 co-relation queries the response was YES. [2022-12-12 20:05:55,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510803 conditions, 23225 events. 16882/23225 cut-off events. For 479908/483950 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 127988 event pairs, 0 based on Foata normal form. 29/17675 useless extension candidates. Maximal degree in co-relation 498941. Up to 21003 conditions per place. [2022-12-12 20:05:55,358 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 3748 selfloop transitions, 642 changer transitions 53/4457 dead transitions. [2022-12-12 20:05:55,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 4457 transitions, 207057 flow [2022-12-12 20:05:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 20:05:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 20:05:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2022-12-12 20:05:55,359 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7684729064039408 [2022-12-12 20:05:55,359 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2022-12-12 20:05:55,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 4457 transitions, 207057 flow [2022-12-12 20:05:55,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 4404 transitions, 204517 flow [2022-12-12 20:05:55,710 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 4404 transitions, 204517 flow [2022-12-12 20:05:55,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:55,710 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:05:55,711 INFO L214 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] [2022-12-12 20:05:55,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 20:05:55,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-12 20:05:55,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:05:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:05:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash -818138786, now seen corresponding path program 2 times [2022-12-12 20:05:55,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:05:55,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95489108] [2022-12-12 20:05:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:05:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:05:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:05:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:56,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:05:56,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95489108] [2022-12-12 20:05:56,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95489108] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:05:56,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641448997] [2022-12-12 20:05:56,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:05:56,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:05:56,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:05:56,023 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:05:56,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 20:05:56,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:05:56,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:05:56,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 20:05:56,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:05:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:56,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:05:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:05:56,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641448997] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:05:56,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:05:56,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 5 [2022-12-12 20:05:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861508133] [2022-12-12 20:05:56,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:05:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 20:05:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:05:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 20:05:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 20:05:56,280 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2022-12-12 20:05:56,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 4404 transitions, 204517 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:05:56,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:05:56,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2022-12-12 20:05:56,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:06:16,808 INFO L130 PetriNetUnfolder]: 25245/34592 cut-off events. [2022-12-12 20:06:16,808 INFO L131 PetriNetUnfolder]: For 812906/817528 co-relation queries the response was YES. [2022-12-12 20:06:16,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795049 conditions, 34592 events. 25245/34592 cut-off events. For 812906/817528 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 199036 event pairs, 0 based on Foata normal form. 29/25694 useless extension candidates. Maximal degree in co-relation 778230. Up to 31649 conditions per place. [2022-12-12 20:06:17,207 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 5444 selfloop transitions, 622 changer transitions 61/6141 dead transitions. [2022-12-12 20:06:17,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 6141 transitions, 297441 flow [2022-12-12 20:06:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 20:06:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 20:06:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2022-12-12 20:06:17,208 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7487684729064039 [2022-12-12 20:06:17,209 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 95 predicate places. [2022-12-12 20:06:17,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 6141 transitions, 297441 flow [2022-12-12 20:06:17,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 6080 transitions, 294399 flow [2022-12-12 20:06:17,612 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 6080 transitions, 294399 flow [2022-12-12 20:06:17,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:06:17,612 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:06:17,613 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 20:06:17,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 20:06:17,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:06:17,813 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:06:17,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:06:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1589265586, now seen corresponding path program 3 times [2022-12-12 20:06:17,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:06:17,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120943086] [2022-12-12 20:06:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:06:17,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:06:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:06:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:06:17,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:06:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120943086] [2022-12-12 20:06:17,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120943086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:06:17,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089812294] [2022-12-12 20:06:17,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:06:17,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:06:17,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:06:17,889 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:06:17,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 20:06:17,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:06:17,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:06:17,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:06:17,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:06:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:06:18,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:06:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:06:18,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089812294] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:06:18,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:06:18,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-12 20:06:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148592091] [2022-12-12 20:06:18,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:06:18,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 20:06:18,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:06:18,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 20:06:18,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-12 20:06:18,056 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:06:18,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 6080 transitions, 294399 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:06:18,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:06:18,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:06:18,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:07:00,588 INFO L130 PetriNetUnfolder]: 33591/45998 cut-off events. [2022-12-12 20:07:00,588 INFO L131 PetriNetUnfolder]: For 1120532/1127315 co-relation queries the response was YES. [2022-12-12 20:07:00,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104589 conditions, 45998 events. 33591/45998 cut-off events. For 1120532/1127315 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 274628 event pairs, 0 based on Foata normal form. 767/34873 useless extension candidates. Maximal degree in co-relation 1084542. Up to 42471 conditions per place. [2022-12-12 20:07:01,140 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 7304 selfloop transitions, 558 changer transitions 0/7870 dead transitions. [2022-12-12 20:07:01,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 7870 transitions, 397109 flow [2022-12-12 20:07:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 20:07:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 20:07:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2022-12-12 20:07:01,141 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5911330049261084 [2022-12-12 20:07:01,142 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 101 predicate places. [2022-12-12 20:07:01,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 7870 transitions, 397109 flow [2022-12-12 20:07:01,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 7870 transitions, 397109 flow [2022-12-12 20:07:01,864 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 7870 transitions, 397109 flow [2022-12-12 20:07:01,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:07:01,864 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:07:01,864 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 20:07:01,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-12 20:07:02,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:07:02,069 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:07:02,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:07:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash -681370666, now seen corresponding path program 4 times [2022-12-12 20:07:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:07:02,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346646908] [2022-12-12 20:07:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:07:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:07:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:07:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:07:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:07:02,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346646908] [2022-12-12 20:07:02,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346646908] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:07:02,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653408899] [2022-12-12 20:07:02,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:07:02,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:07:02,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:07:02,171 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:07:02,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 20:07:02,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:07:02,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:07:02,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:07:02,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:07:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:07:02,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:07:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:07:02,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653408899] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:07:02,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:07:02,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-12 20:07:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186361994] [2022-12-12 20:07:02,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:07:02,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 20:07:02,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:07:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 20:07:02,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-12 20:07:02,388 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:07:02,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 7870 transitions, 397109 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:07:02,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:07:02,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:07:02,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:08:09,609 INFO L130 PetriNetUnfolder]: 34674/47721 cut-off events. [2022-12-12 20:08:09,609 INFO L131 PetriNetUnfolder]: For 1229442/1236425 co-relation queries the response was YES. [2022-12-12 20:08:09,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190723 conditions, 47721 events. 34674/47721 cut-off events. For 1229442/1236425 co-relation queries the response was YES. Maximal size of possible extension queue 1726. Compared 289268 event pairs, 0 based on Foata normal form. 511/36149 useless extension candidates. Maximal degree in co-relation 1168771. Up to 44049 conditions per place. [2022-12-12 20:08:10,381 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 10225 selfloop transitions, 1611 changer transitions 665/12509 dead transitions. [2022-12-12 20:08:10,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 12509 transitions, 655980 flow [2022-12-12 20:08:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 20:08:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 20:08:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2022-12-12 20:08:10,382 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5329153605015674 [2022-12-12 20:08:10,383 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 111 predicate places. [2022-12-12 20:08:10,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 12509 transitions, 655980 flow [2022-12-12 20:08:11,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 11844 transitions, 620857 flow [2022-12-12 20:08:11,087 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 11844 transitions, 620857 flow [2022-12-12 20:08:11,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:08:11,087 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:08:11,087 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 20:08:11,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-12 20:08:11,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-12 20:08:11,290 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:08:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:08:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1367338264, now seen corresponding path program 5 times [2022-12-12 20:08:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:08:11,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364755504] [2022-12-12 20:08:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:08:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:08:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:08:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:08:11,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:08:11,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364755504] [2022-12-12 20:08:11,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364755504] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:08:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699110631] [2022-12-12 20:08:11,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:08:11,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:08:11,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:08:11,348 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:08:11,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 20:08:11,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:08:11,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:08:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:08:11,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:08:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:08:11,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:08:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:08:11,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699110631] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:08:11,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:08:11,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-12 20:08:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497443883] [2022-12-12 20:08:11,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:08:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 20:08:11,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:08:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 20:08:11,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-12-12 20:08:11,525 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:08:11,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 11844 transitions, 620857 flow. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:08:11,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:08:11,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:08:11,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:10:58,487 INFO L130 PetriNetUnfolder]: 44769/62603 cut-off events. [2022-12-12 20:10:58,487 INFO L131 PetriNetUnfolder]: For 1757499/1765133 co-relation queries the response was YES. [2022-12-12 20:10:58,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622486 conditions, 62603 events. 44769/62603 cut-off events. For 1757499/1765133 co-relation queries the response was YES. Maximal size of possible extension queue 2283. Compared 406451 event pairs, 0 based on Foata normal form. 859/47624 useless extension candidates. Maximal degree in co-relation 1582513. Up to 58029 conditions per place. [2022-12-12 20:10:59,307 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 14277 selfloop transitions, 2364 changer transitions 283/16932 dead transitions. [2022-12-12 20:10:59,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 16932 transitions, 922191 flow [2022-12-12 20:10:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 20:10:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 20:10:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 276 transitions. [2022-12-12 20:10:59,309 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-12 20:10:59,309 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 128 predicate places. [2022-12-12 20:10:59,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 16932 transitions, 922191 flow [2022-12-12 20:11:00,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 16649 transitions, 906699 flow [2022-12-12 20:11:00,408 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 16649 transitions, 906699 flow [2022-12-12 20:11:00,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:11:00,408 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:11:00,408 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 20:11:00,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-12 20:11:00,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-12 20:11:00,609 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:11:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:11:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1125284782, now seen corresponding path program 6 times [2022-12-12 20:11:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:11:00,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162668704] [2022-12-12 20:11:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:11:00,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:11:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:11:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:11:00,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:11:00,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162668704] [2022-12-12 20:11:00,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162668704] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:11:00,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889173065] [2022-12-12 20:11:00,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 20:11:00,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:11:00,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:11:00,681 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:11:00,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-12 20:11:00,781 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 20:11:00,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:11:00,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:11:00,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:11:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:11:00,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:11:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:11:00,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889173065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:11:00,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:11:00,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-12 20:11:00,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44965030] [2022-12-12 20:11:00,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:11:00,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 20:11:00,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:11:00,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 20:11:00,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-12 20:11:00,864 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:11:00,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 16649 transitions, 906699 flow. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:11:00,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:11:00,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:11:00,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:16:02,428 INFO L130 PetriNetUnfolder]: 57412/79500 cut-off events. [2022-12-12 20:16:02,428 INFO L131 PetriNetUnfolder]: For 2431646/2439168 co-relation queries the response was YES. [2022-12-12 20:16:02,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142728 conditions, 79500 events. 57412/79500 cut-off events. For 2431646/2439168 co-relation queries the response was YES. Maximal size of possible extension queue 2718. Compared 517461 event pairs, 0 based on Foata normal form. 806/60964 useless extension candidates. Maximal degree in co-relation 2101311. Up to 74242 conditions per place. [2022-12-12 20:16:03,580 INFO L137 encePairwiseOnDemand]: 23/29 looper letters, 18783 selfloop transitions, 1262 changer transitions 0/20053 dead transitions. [2022-12-12 20:16:03,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 20053 transitions, 1132549 flow [2022-12-12 20:16:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 20:16:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 20:16:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2022-12-12 20:16:03,581 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.54858934169279 [2022-12-12 20:16:03,581 INFO L295 CegarLoopForPetriNet]: 38 programPoint places, 138 predicate places. [2022-12-12 20:16:03,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 20053 transitions, 1132549 flow [2022-12-12 20:16:04,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 20053 transitions, 1132549 flow [2022-12-12 20:16:04,867 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 20053 transitions, 1132549 flow [2022-12-12 20:16:04,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:16:04,867 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:16:04,867 INFO L214 CegarLoopForPetriNet]: trace histogram [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] [2022-12-12 20:16:04,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-12 20:16:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-12 20:16:05,068 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 20:16:05,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:16:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash -865662420, now seen corresponding path program 7 times [2022-12-12 20:16:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:16:05,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855226569] [2022-12-12 20:16:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:16:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:16:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:16:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:16:05,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:16:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855226569] [2022-12-12 20:16:05,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855226569] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:16:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597933229] [2022-12-12 20:16:05,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 20:16:05,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:16:05,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:16:05,120 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:16:05,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-12 20:16:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:16:05,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:16:05,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:16:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:16:05,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:16:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:16:05,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597933229] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:16:05,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:16:05,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-12-12 20:16:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959491270] [2022-12-12 20:16:05,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:16:05,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 20:16:05,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:16:05,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 20:16:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-12 20:16:05,293 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 29 [2022-12-12 20:16:05,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 20053 transitions, 1132549 flow. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:16:05,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:16:05,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 29 [2022-12-12 20:16:05,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 20:18:44,847 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:18:44,863 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 [2022-12-12 20:18:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 20:18:44,886 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 20:18:44,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-12 20:18:45,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:18:45,089 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 2/29 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 1018450 conditions, 37010 events (27992/37009 cut-off events. For 1691781/1699337 co-relation queries the response was YES. Maximal size of possible extension queue 3204. Compared 226980 event pairs, 0 based on Foata normal form. 743/30512 useless extension candidates. Maximal degree in co-relation 1017495. Up to 33591 conditions per place.). [2022-12-12 20:18:45,091 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-12 20:18:45,091 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-12 20:18:45,091 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-12 20:18:45,091 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-12 20:18:45,091 INFO L445 BasicCegarLoop]: Path program histogram: [7, 6, 5, 5, 4, 1] [2022-12-12 20:18:45,093 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 20:18:45,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 20:18:45,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 08:18:45 BasicIcfg [2022-12-12 20:18:45,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 20:18:45,095 INFO L158 Benchmark]: Toolchain (without parser) took 849198.57ms. Allocated memory was 169.9MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 145.2MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 3.8GB. Max. memory is 8.0GB. [2022-12-12 20:18:45,095 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 169.9MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 20:18:45,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.57ms. Allocated memory is still 169.9MB. Free memory was 145.2MB in the beginning and 133.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 20:18:45,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.59ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 20:18:45,096 INFO L158 Benchmark]: Boogie Preprocessor took 33.80ms. Allocated memory is still 169.9MB. Free memory was 131.1MB in the beginning and 129.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 20:18:45,096 INFO L158 Benchmark]: RCFGBuilder took 400.10ms. Allocated memory is still 169.9MB. Free memory was 129.5MB in the beginning and 111.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-12 20:18:45,096 INFO L158 Benchmark]: TraceAbstraction took 848482.72ms. Allocated memory was 169.9MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 110.6MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2022-12-12 20:18:45,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 169.9MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.57ms. Allocated memory is still 169.9MB. Free memory was 145.2MB in the beginning and 133.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.59ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.80ms. Allocated memory is still 169.9MB. Free memory was 131.1MB in the beginning and 129.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 400.10ms. Allocated memory is still 169.9MB. Free memory was 129.5MB in the beginning and 111.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 848482.72ms. Allocated memory was 169.9MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 110.6MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 111 PlacesBefore, 38 PlacesAfterwards, 107 TransitionsBefore, 29 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 32 TrivialYvCompositions, 41 ConcurrentYvCompositions, 5 ChoiceCompositions, 78 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1252, independent: 1248, independent conditional: 1248, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1252, independent: 1248, independent conditional: 0, independent unconditional: 1248, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1252, independent: 1248, independent conditional: 0, independent unconditional: 1248, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1252, independent: 1248, independent conditional: 0, independent unconditional: 1248, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1252, independent: 1248, independent conditional: 0, independent unconditional: 1248, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1252, independent: 1245, independent conditional: 0, independent unconditional: 1245, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1252, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1252, unknown conditional: 0, unknown unconditional: 1252] , Statistics on independence cache: Total cache size (in pairs): 1998, Positive cache size: 1994, Positive conditional cache size: 0, Positive unconditional cache size: 1994, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 2/29 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 1018450 conditions, 37010 events (27992/37009 cut-off events. For 1691781/1699337 co-relation queries the response was YES. Maximal size of possible extension queue 3204. Compared 226980 event pairs, 0 based on Foata normal form. 743/30512 useless extension candidates. Maximal degree in co-relation 1017495. Up to 33591 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 2/29 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 1018450 conditions, 37010 events (27992/37009 cut-off events. For 1691781/1699337 co-relation queries the response was YES. Maximal size of possible extension queue 3204. Compared 226980 event pairs, 0 based on Foata normal form. 743/30512 useless extension candidates. Maximal degree in co-relation 1017495. Up to 33591 conditions per place.). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 2/29 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 1018450 conditions, 37010 events (27992/37009 cut-off events. For 1691781/1699337 co-relation queries the response was YES. Maximal size of possible extension queue 3204. Compared 226980 event pairs, 0 based on Foata normal form. 743/30512 useless extension candidates. Maximal degree in co-relation 1017495. Up to 33591 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 2/29 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 1018450 conditions, 37010 events (27992/37009 cut-off events. For 1691781/1699337 co-relation queries the response was YES. Maximal size of possible extension queue 3204. Compared 226980 event pairs, 0 based on Foata normal form. 743/30512 useless extension candidates. Maximal degree in co-relation 1017495. Up to 33591 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (12states, 2/29 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 1018450 conditions, 37010 events (27992/37009 cut-off events. For 1691781/1699337 co-relation queries the response was YES. Maximal size of possible extension queue 3204. Compared 226980 event pairs, 0 based on Foata normal form. 743/30512 useless extension candidates. Maximal degree in co-relation 1017495. Up to 33591 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 155 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 6.4s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 848.4s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 829.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2329 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2329 mSDsluCounter, 211 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7660 IncrementalHoareTripleChecker+Invalid, 7777 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 86 mSDtfsCounter, 7660 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1191 GetRequests, 926 SyntacticMatches, 36 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1132549occurred in iteration=27, InterpolantAutomatonStates: 172, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.4s AutomataMinimizationTime, 27 MinimizatonAttempts, 86106 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1245 NumberOfCodeBlocks, 1230 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 1635 ConstructedInterpolants, 0 QuantifiedInterpolants, 4523 SizeOfPredicates, 46 NumberOfNonLiveVariables, 3798 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 64 InterpolantComputations, 11 PerfectInterpolantSequences, 35/114 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