/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:49:31,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:49:31,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:49:31,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:49:31,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:49:31,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:49:31,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:49:31,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:49:31,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:49:31,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:49:31,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:49:31,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:49:31,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:49:31,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:49:31,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:49:31,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:49:31,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:49:31,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:49:31,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:49:31,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:49:31,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:49:31,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:49:31,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:49:31,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:49:31,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:49:31,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:49:31,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:49:31,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:49:31,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:49:31,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:49:31,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:49:31,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:49:31,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:49:31,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:49:31,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:49:31,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:49:31,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:49:31,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:49:31,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:49:31,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:49:31,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:49:31,416 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-NoLbe.epf [2022-12-11 20:49:31,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:49:31,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:49:31,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:49:31,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:49:31,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:49:31,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:49:31,444 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:49:31,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:49:31,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:49:31,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:49:31,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:49:31,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:49:31,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:49:31,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:49:31,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:49:31,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:49:31,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:49:31,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:49:31,447 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:49:31,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:49:31,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:49:31,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:49:31,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 20:49:31,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:49:31,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:49:31,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:49:31,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:49:31,703 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:49:31,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-11 20:49:32,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:49:32,847 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:49:32,848 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2022-12-11 20:49:32,862 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/727708795/eaaed834026d4bcfa678d7e3d06610be/FLAGfdb3ecc92 [2022-12-11 20:49:32,872 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/727708795/eaaed834026d4bcfa678d7e3d06610be [2022-12-11 20:49:32,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:49:32,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:49:32,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:49:32,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:49:32,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:49:32,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:49:32" (1/1) ... [2022-12-11 20:49:32,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8dae33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:32, skipping insertion in model container [2022-12-11 20:49:32,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:49:32" (1/1) ... [2022-12-11 20:49:32,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:49:32,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:49:33,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,122 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2022-12-11 20:49:33,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:49:33,130 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:49:33,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:49:33,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:49:33,156 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2022-12-11 20:49:33,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:49:33,193 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:49:33,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33 WrapperNode [2022-12-11 20:49:33,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:49:33,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:49:33,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:49:33,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:49:33,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,240 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-11 20:49:33,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:49:33,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:49:33,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:49:33,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:49:33,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,270 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:49:33,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:49:33,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:49:33,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:49:33,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (1/1) ... [2022-12-11 20:49:33,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:49:33,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:33,299 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) [2022-12-11 20:49:33,318 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 [2022-12-11 20:49:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 20:49:33,332 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 20:49:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 20:49:33,332 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 20:49:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:49:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 20:49:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:49:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:49:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:49:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:49:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 20:49:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:49:33,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:49:33,334 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:49:33,442 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:49:33,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:49:33,563 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:49:33,567 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:49:33,568 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 20:49:33,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:49:33 BoogieIcfgContainer [2022-12-11 20:49:33,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:49:33,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:49:33,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:49:33,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:49:33,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:49:32" (1/3) ... [2022-12-11 20:49:33,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23093c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:49:33, skipping insertion in model container [2022-12-11 20:49:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:49:33" (2/3) ... [2022-12-11 20:49:33,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23093c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:49:33, skipping insertion in model container [2022-12-11 20:49:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:49:33" (3/3) ... [2022-12-11 20:49:33,580 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-12-11 20:49:33,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:49:33,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:49:33,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:49:33,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 20:49:33,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-11 20:49:33,674 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-11 20:49:33,675 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 20:49:33,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-11 20:49:33,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-11 20:49:33,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-11 20:49:33,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:49:33,694 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;@78685a22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:49:33,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 20:49:33,705 INFO L130 PetriNetUnfolder]: 4/54 cut-off events. [2022-12-11 20:49:33,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 20:49:33,706 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:33,706 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, 1, 1, 1, 1, 1] [2022-12-11 20:49:33,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash -869864902, now seen corresponding path program 1 times [2022-12-11 20:49:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463630142] [2022-12-11 20:49:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:34,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:34,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463630142] [2022-12-11 20:49:34,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463630142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:34,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:49:34,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:49:34,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111354587] [2022-12-11 20:49:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:34,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:49:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:34,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:49:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:49:34,216 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:34,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:34,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:34,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:34,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:34,386 INFO L130 PetriNetUnfolder]: 46/204 cut-off events. [2022-12-11 20:49:34,386 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-11 20:49:34,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 204 events. 46/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 790 event pairs, 3 based on Foata normal form. 49/233 useless extension candidates. Maximal degree in co-relation 259. Up to 32 conditions per place. [2022-12-11 20:49:34,391 INFO L137 encePairwiseOnDemand]: 55/66 looper letters, 14 selfloop transitions, 9 changer transitions 23/88 dead transitions. [2022-12-11 20:49:34,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 263 flow [2022-12-11 20:49:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:49:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:49:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2022-12-11 20:49:34,407 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8681818181818182 [2022-12-11 20:49:34,410 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2022-12-11 20:49:34,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 88 transitions, 263 flow [2022-12-11 20:49:34,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 65 transitions, 185 flow [2022-12-11 20:49:34,413 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 185 flow [2022-12-11 20:49:34,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:34,413 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:34,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:34,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:49:34,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1673234708, now seen corresponding path program 1 times [2022-12-11 20:49:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:34,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55323411] [2022-12-11 20:49:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:34,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:34,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55323411] [2022-12-11 20:49:34,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55323411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:34,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:49:34,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:49:34,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984408394] [2022-12-11 20:49:34,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:34,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:49:34,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:34,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:49:34,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:49:34,638 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:34,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:34,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:34,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:34,713 INFO L130 PetriNetUnfolder]: 27/140 cut-off events. [2022-12-11 20:49:34,714 INFO L131 PetriNetUnfolder]: For 28/46 co-relation queries the response was YES. [2022-12-11 20:49:34,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 140 events. 27/140 cut-off events. For 28/46 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 399 event pairs, 0 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 210. Up to 31 conditions per place. [2022-12-11 20:49:34,717 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 19 selfloop transitions, 9 changer transitions 5/75 dead transitions. [2022-12-11 20:49:34,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 291 flow [2022-12-11 20:49:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 20:49:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 20:49:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 383 transitions. [2022-12-11 20:49:34,718 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.829004329004329 [2022-12-11 20:49:34,719 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2022-12-11 20:49:34,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 75 transitions, 291 flow [2022-12-11 20:49:34,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 70 transitions, 261 flow [2022-12-11 20:49:34,721 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 261 flow [2022-12-11 20:49:34,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:34,722 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:34,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:34,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 20:49:34,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:34,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:34,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1128844342, now seen corresponding path program 1 times [2022-12-11 20:49:34,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:34,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090324807] [2022-12-11 20:49:34,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:34,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:34,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090324807] [2022-12-11 20:49:34,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090324807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:34,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:49:34,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:49:34,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200681823] [2022-12-11 20:49:34,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:34,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:49:34,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:34,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:49:34,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:49:34,871 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:34,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:34,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:34,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:34,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:34,962 INFO L130 PetriNetUnfolder]: 37/192 cut-off events. [2022-12-11 20:49:34,963 INFO L131 PetriNetUnfolder]: For 111/177 co-relation queries the response was YES. [2022-12-11 20:49:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 192 events. 37/192 cut-off events. For 111/177 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 642 event pairs, 0 based on Foata normal form. 14/188 useless extension candidates. Maximal degree in co-relation 356. Up to 51 conditions per place. [2022-12-11 20:49:34,966 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 25 selfloop transitions, 11 changer transitions 8/86 dead transitions. [2022-12-11 20:49:34,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 86 transitions, 445 flow [2022-12-11 20:49:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:49:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:49:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 494 transitions. [2022-12-11 20:49:34,967 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8316498316498316 [2022-12-11 20:49:34,968 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2022-12-11 20:49:34,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 86 transitions, 445 flow [2022-12-11 20:49:34,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 78 transitions, 381 flow [2022-12-11 20:49:34,970 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 381 flow [2022-12-11 20:49:34,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:34,971 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:34,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:34,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 20:49:34,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1724335678, now seen corresponding path program 2 times [2022-12-11 20:49:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:34,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365496896] [2022-12-11 20:49:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:35,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365496896] [2022-12-11 20:49:35,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365496896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:35,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:49:35,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:49:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266543707] [2022-12-11 20:49:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:49:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:49:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:49:35,100 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:35,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:35,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:35,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:35,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:35,204 INFO L130 PetriNetUnfolder]: 30/175 cut-off events. [2022-12-11 20:49:35,205 INFO L131 PetriNetUnfolder]: For 194/258 co-relation queries the response was YES. [2022-12-11 20:49:35,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 175 events. 30/175 cut-off events. For 194/258 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 574 event pairs, 0 based on Foata normal form. 16/175 useless extension candidates. Maximal degree in co-relation 359. Up to 41 conditions per place. [2022-12-11 20:49:35,206 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 22 selfloop transitions, 12 changer transitions 12/88 dead transitions. [2022-12-11 20:49:35,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 553 flow [2022-12-11 20:49:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:49:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:49:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 488 transitions. [2022-12-11 20:49:35,207 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8215488215488216 [2022-12-11 20:49:35,209 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2022-12-11 20:49:35,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 88 transitions, 553 flow [2022-12-11 20:49:35,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 76 transitions, 433 flow [2022-12-11 20:49:35,210 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 433 flow [2022-12-11 20:49:35,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:35,210 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:35,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:35,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 20:49:35,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:35,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1063132410, now seen corresponding path program 1 times [2022-12-11 20:49:35,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:35,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489198483] [2022-12-11 20:49:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:35,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:35,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489198483] [2022-12-11 20:49:35,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489198483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:35,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:49:35,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 20:49:35,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115881278] [2022-12-11 20:49:35,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:35,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 20:49:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 20:49:35,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 20:49:35,328 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:35,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:35,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:35,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:35,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:35,437 INFO L130 PetriNetUnfolder]: 43/232 cut-off events. [2022-12-11 20:49:35,438 INFO L131 PetriNetUnfolder]: For 371/447 co-relation queries the response was YES. [2022-12-11 20:49:35,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 232 events. 43/232 cut-off events. For 371/447 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 847 event pairs, 0 based on Foata normal form. 15/226 useless extension candidates. Maximal degree in co-relation 571. Up to 62 conditions per place. [2022-12-11 20:49:35,440 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 26 selfloop transitions, 21 changer transitions 8/97 dead transitions. [2022-12-11 20:49:35,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 97 transitions, 753 flow [2022-12-11 20:49:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-11 20:49:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-11 20:49:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 600 transitions. [2022-12-11 20:49:35,442 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8264462809917356 [2022-12-11 20:49:35,445 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2022-12-11 20:49:35,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 97 transitions, 753 flow [2022-12-11 20:49:35,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 657 flow [2022-12-11 20:49:35,447 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 657 flow [2022-12-11 20:49:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:35,447 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:35,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:35,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 20:49:35,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash -698770310, now seen corresponding path program 2 times [2022-12-11 20:49:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:35,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774877013] [2022-12-11 20:49:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:35,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:35,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774877013] [2022-12-11 20:49:35,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774877013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:35,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:49:35,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 20:49:35,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083972201] [2022-12-11 20:49:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:35,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 20:49:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 20:49:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 20:49:35,526 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:35,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 657 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:35,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:35,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:35,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:35,642 INFO L130 PetriNetUnfolder]: 38/216 cut-off events. [2022-12-11 20:49:35,642 INFO L131 PetriNetUnfolder]: For 532/644 co-relation queries the response was YES. [2022-12-11 20:49:35,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 216 events. 38/216 cut-off events. For 532/644 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 812 event pairs, 0 based on Foata normal form. 26/222 useless extension candidates. Maximal degree in co-relation 584. Up to 55 conditions per place. [2022-12-11 20:49:35,644 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 25 selfloop transitions, 23 changer transitions 12/102 dead transitions. [2022-12-11 20:49:35,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 102 transitions, 933 flow [2022-12-11 20:49:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 20:49:35,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 20:49:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 648 transitions. [2022-12-11 20:49:35,646 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-12-11 20:49:35,648 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2022-12-11 20:49:35,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 102 transitions, 933 flow [2022-12-11 20:49:35,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 90 transitions, 765 flow [2022-12-11 20:49:35,650 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 765 flow [2022-12-11 20:49:35,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:35,650 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:35,650 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:35,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 20:49:35,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:35,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1860642807, now seen corresponding path program 1 times [2022-12-11 20:49:35,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:35,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645627233] [2022-12-11 20:49:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:35,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:35,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645627233] [2022-12-11 20:49:35,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645627233] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:35,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442153173] [2022-12-11 20:49:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:35,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:35,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:35,779 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) [2022-12-11 20:49:35,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 20:49:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:35,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 20:49:35,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:35,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:36,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442153173] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:36,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:36,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-11 20:49:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615657969] [2022-12-11 20:49:36,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-11 20:49:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-11 20:49:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-11 20:49:36,127 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:36,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 765 flow. Second operand has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:36,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:36,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:36,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:36,304 INFO L130 PetriNetUnfolder]: 50/300 cut-off events. [2022-12-11 20:49:36,305 INFO L131 PetriNetUnfolder]: For 957/1073 co-relation queries the response was YES. [2022-12-11 20:49:36,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 300 events. 50/300 cut-off events. For 957/1073 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1053 event pairs, 0 based on Foata normal form. 25/296 useless extension candidates. Maximal degree in co-relation 872. Up to 75 conditions per place. [2022-12-11 20:49:36,306 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 43 selfloop transitions, 17 changer transitions 20/122 dead transitions. [2022-12-11 20:49:36,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 122 transitions, 1373 flow [2022-12-11 20:49:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-11 20:49:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-11 20:49:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1028 transitions. [2022-12-11 20:49:36,309 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8197767145135566 [2022-12-11 20:49:36,309 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 43 predicate places. [2022-12-11 20:49:36,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 122 transitions, 1373 flow [2022-12-11 20:49:36,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 102 transitions, 1053 flow [2022-12-11 20:49:36,311 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 1053 flow [2022-12-11 20:49:36,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.61538461538461) internal successors, (684), 13 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:36,311 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:36,311 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:36,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 20:49:36,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:36,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:36,517 INFO L85 PathProgramCache]: Analyzing trace with hash 508150273, now seen corresponding path program 2 times [2022-12-11 20:49:36,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:36,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653682216] [2022-12-11 20:49:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:36,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:36,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:36,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653682216] [2022-12-11 20:49:36,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653682216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:36,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338222852] [2022-12-11 20:49:36,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 20:49:36,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:36,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:36,614 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) [2022-12-11 20:49:36,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 20:49:36,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 20:49:36,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:36,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 20:49:36,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:36,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:36,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338222852] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:36,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:36,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-12-11 20:49:36,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140601904] [2022-12-11 20:49:36,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:36,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-11 20:49:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:36,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-11 20:49:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-11 20:49:36,882 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:36,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 1053 flow. Second operand has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:36,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:36,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:36,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:37,181 INFO L130 PetriNetUnfolder]: 70/419 cut-off events. [2022-12-11 20:49:37,182 INFO L131 PetriNetUnfolder]: For 1658/1834 co-relation queries the response was YES. [2022-12-11 20:49:37,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 419 events. 70/419 cut-off events. For 1658/1834 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2071 event pairs, 0 based on Foata normal form. 30/408 useless extension candidates. Maximal degree in co-relation 1363. Up to 111 conditions per place. [2022-12-11 20:49:37,184 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 49 selfloop transitions, 44 changer transitions 23/158 dead transitions. [2022-12-11 20:49:37,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 158 transitions, 2181 flow [2022-12-11 20:49:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-11 20:49:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-11 20:49:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1456 transitions. [2022-12-11 20:49:37,187 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8170594837261503 [2022-12-11 20:49:37,189 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 62 predicate places. [2022-12-11 20:49:37,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 158 transitions, 2181 flow [2022-12-11 20:49:37,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 135 transitions, 1767 flow [2022-12-11 20:49:37,191 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 135 transitions, 1767 flow [2022-12-11 20:49:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:37,192 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:37,192 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:37,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:37,399 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,SelfDestructingSolverStorable7 [2022-12-11 20:49:37,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1943521533, now seen corresponding path program 1 times [2022-12-11 20:49:37,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:37,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570069116] [2022-12-11 20:49:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:37,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:37,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570069116] [2022-12-11 20:49:37,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570069116] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:37,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434477640] [2022-12-11 20:49:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:37,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:37,501 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) [2022-12-11 20:49:37,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 20:49:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:37,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-11 20:49:37,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:37,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:37,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434477640] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:37,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:37,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2022-12-11 20:49:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685765334] [2022-12-11 20:49:37,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:37,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-11 20:49:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-11 20:49:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-11 20:49:37,743 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:37,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 135 transitions, 1767 flow. Second operand has 15 states, 15 states have (on average 52.46666666666667) internal successors, (787), 15 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:37,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:37,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:37,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:38,139 INFO L130 PetriNetUnfolder]: 107/597 cut-off events. [2022-12-11 20:49:38,139 INFO L131 PetriNetUnfolder]: For 3021/3347 co-relation queries the response was YES. [2022-12-11 20:49:38,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 597 events. 107/597 cut-off events. For 3021/3347 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3210 event pairs, 0 based on Foata normal form. 29/569 useless extension candidates. Maximal degree in co-relation 2237. Up to 175 conditions per place. [2022-12-11 20:49:38,143 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 67 selfloop transitions, 75 changer transitions 26/210 dead transitions. [2022-12-11 20:49:38,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 210 transitions, 3453 flow [2022-12-11 20:49:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-11 20:49:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-11 20:49:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1729 transitions. [2022-12-11 20:49:38,147 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.818655303030303 [2022-12-11 20:49:38,148 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 85 predicate places. [2022-12-11 20:49:38,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 210 transitions, 3453 flow [2022-12-11 20:49:38,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 184 transitions, 2933 flow [2022-12-11 20:49:38,152 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 184 transitions, 2933 flow [2022-12-11 20:49:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 52.46666666666667) internal successors, (787), 15 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:38,152 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:38,152 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:38,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:38,359 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2028090731, now seen corresponding path program 2 times [2022-12-11 20:49:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:38,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223151177] [2022-12-11 20:49:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:38,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223151177] [2022-12-11 20:49:38,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223151177] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844645768] [2022-12-11 20:49:38,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 20:49:38,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:38,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:38,489 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) [2022-12-11 20:49:38,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 20:49:38,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 20:49:38,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:38,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-11 20:49:38,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:38,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:38,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844645768] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:38,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:38,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-12-11 20:49:38,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292516160] [2022-12-11 20:49:38,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:38,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 20:49:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:38,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 20:49:38,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-12-11 20:49:38,757 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:38,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 184 transitions, 2933 flow. Second operand has 22 states, 22 states have (on average 52.40909090909091) internal successors, (1153), 22 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:38,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:38,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:38,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:39,512 INFO L130 PetriNetUnfolder]: 143/875 cut-off events. [2022-12-11 20:49:39,512 INFO L131 PetriNetUnfolder]: For 5027/5325 co-relation queries the response was YES. [2022-12-11 20:49:39,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3394 conditions, 875 events. 143/875 cut-off events. For 5027/5325 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5037 event pairs, 0 based on Foata normal form. 48/836 useless extension candidates. Maximal degree in co-relation 3319. Up to 237 conditions per place. [2022-12-11 20:49:39,518 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 89 selfloop transitions, 110 changer transitions 43/284 dead transitions. [2022-12-11 20:49:39,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 284 transitions, 5417 flow [2022-12-11 20:49:39,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-11 20:49:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-11 20:49:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2533 transitions. [2022-12-11 20:49:39,521 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8165699548678272 [2022-12-11 20:49:39,521 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 122 predicate places. [2022-12-11 20:49:39,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 284 transitions, 5417 flow [2022-12-11 20:49:39,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 241 transitions, 4471 flow [2022-12-11 20:49:39,527 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 241 transitions, 4471 flow [2022-12-11 20:49:39,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 52.40909090909091) internal successors, (1153), 22 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:39,527 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:39,527 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:39,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:39,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:39,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:39,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1398665091, now seen corresponding path program 3 times [2022-12-11 20:49:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:39,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650796377] [2022-12-11 20:49:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:39,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:39,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650796377] [2022-12-11 20:49:39,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650796377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:39,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117463689] [2022-12-11 20:49:39,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:49:39,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:39,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:39,962 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) [2022-12-11 20:49:39,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 20:49:40,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-11 20:49:40,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:40,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-11 20:49:40,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:40,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:40,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117463689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:40,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:40,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2022-12-11 20:49:40,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794624329] [2022-12-11 20:49:40,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:40,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-11 20:49:40,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:40,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-11 20:49:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2022-12-11 20:49:40,428 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:40,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 241 transitions, 4471 flow. Second operand has 34 states, 34 states have (on average 52.23529411764706) internal successors, (1776), 34 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:40,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:40,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:40,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:41,359 INFO L130 PetriNetUnfolder]: 165/996 cut-off events. [2022-12-11 20:49:41,359 INFO L131 PetriNetUnfolder]: For 6963/7315 co-relation queries the response was YES. [2022-12-11 20:49:41,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4173 conditions, 996 events. 165/996 cut-off events. For 6963/7315 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5341 event pairs, 0 based on Foata normal form. 40/936 useless extension candidates. Maximal degree in co-relation 4093. Up to 274 conditions per place. [2022-12-11 20:49:41,365 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 114 selfloop transitions, 142 changer transitions 23/321 dead transitions. [2022-12-11 20:49:41,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 321 transitions, 6789 flow [2022-12-11 20:49:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-11 20:49:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-11 20:49:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2635 transitions. [2022-12-11 20:49:41,367 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8147804576376005 [2022-12-11 20:49:41,368 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 159 predicate places. [2022-12-11 20:49:41,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 321 transitions, 6789 flow [2022-12-11 20:49:41,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 298 transitions, 6237 flow [2022-12-11 20:49:41,373 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 298 transitions, 6237 flow [2022-12-11 20:49:41,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.23529411764706) internal successors, (1776), 34 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:41,374 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:41,374 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:41,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:41,583 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 [2022-12-11 20:49:41,583 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:41,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:41,584 INFO L85 PathProgramCache]: Analyzing trace with hash 549240485, now seen corresponding path program 4 times [2022-12-11 20:49:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:41,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227565852] [2022-12-11 20:49:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:41,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:41,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:41,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227565852] [2022-12-11 20:49:41,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227565852] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:41,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351584163] [2022-12-11 20:49:41,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 20:49:41,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:41,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:41,988 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) [2022-12-11 20:49:41,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 20:49:42,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 20:49:42,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:42,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-11 20:49:42,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:42,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:42,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351584163] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:42,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:42,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 29 [2022-12-11 20:49:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528076667] [2022-12-11 20:49:42,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:42,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-11 20:49:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:42,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-11 20:49:42,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2022-12-11 20:49:42,779 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:42,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 298 transitions, 6237 flow. Second operand has 29 states, 29 states have (on average 52.3448275862069) internal successors, (1518), 29 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:42,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:42,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:42,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:43,333 INFO L130 PetriNetUnfolder]: 179/1129 cut-off events. [2022-12-11 20:49:43,333 INFO L131 PetriNetUnfolder]: For 9410/9826 co-relation queries the response was YES. [2022-12-11 20:49:43,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 1129 events. 179/1129 cut-off events. For 9410/9826 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6087 event pairs, 0 based on Foata normal form. 19/1033 useless extension candidates. Maximal degree in co-relation 4857. Up to 303 conditions per place. [2022-12-11 20:49:43,343 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 255 selfloop transitions, 33 changer transitions 20/350 dead transitions. [2022-12-11 20:49:43,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 350 transitions, 8101 flow [2022-12-11 20:49:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-11 20:49:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-11 20:49:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1876 transitions. [2022-12-11 20:49:43,355 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8121212121212121 [2022-12-11 20:49:43,355 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 185 predicate places. [2022-12-11 20:49:43,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 350 transitions, 8101 flow [2022-12-11 20:49:43,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 330 transitions, 7581 flow [2022-12-11 20:49:43,363 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 330 transitions, 7581 flow [2022-12-11 20:49:43,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 52.3448275862069) internal successors, (1518), 29 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:43,365 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:43,365 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:43,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-11 20:49:43,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:43,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:43,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2135194633, now seen corresponding path program 5 times [2022-12-11 20:49:43,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:43,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534221070] [2022-12-11 20:49:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:43,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:43,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:43,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534221070] [2022-12-11 20:49:43,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534221070] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:43,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365688478] [2022-12-11 20:49:43,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 20:49:43,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:43,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:43,950 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) [2022-12-11 20:49:44,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 20:49:44,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-12-11 20:49:44,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:44,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-11 20:49:44,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:44,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:44,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365688478] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:44,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:44,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 31 [2022-12-11 20:49:44,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796011685] [2022-12-11 20:49:44,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:44,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-11 20:49:44,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-11 20:49:44,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2022-12-11 20:49:44,682 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:44,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 330 transitions, 7581 flow. Second operand has 31 states, 31 states have (on average 52.32258064516129) internal successors, (1622), 31 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:44,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:44,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:44,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:45,405 INFO L130 PetriNetUnfolder]: 229/1579 cut-off events. [2022-12-11 20:49:45,405 INFO L131 PetriNetUnfolder]: For 15041/15515 co-relation queries the response was YES. [2022-12-11 20:49:45,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1579 events. 229/1579 cut-off events. For 15041/15515 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10001 event pairs, 0 based on Foata normal form. 31/1445 useless extension candidates. Maximal degree in co-relation 6919. Up to 403 conditions per place. [2022-12-11 20:49:45,415 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 264 selfloop transitions, 124 changer transitions 20/450 dead transitions. [2022-12-11 20:49:45,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 450 transitions, 11517 flow [2022-12-11 20:49:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-11 20:49:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-11 20:49:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2303 transitions. [2022-12-11 20:49:45,418 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8114869626497534 [2022-12-11 20:49:45,418 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 220 predicate places. [2022-12-11 20:49:45,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 450 transitions, 11517 flow [2022-12-11 20:49:45,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 430 transitions, 10957 flow [2022-12-11 20:49:45,428 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 430 transitions, 10957 flow [2022-12-11 20:49:45,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 52.32258064516129) internal successors, (1622), 31 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:45,429 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:45,429 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:45,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-11 20:49:45,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:45,634 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash 498617395, now seen corresponding path program 6 times [2022-12-11 20:49:45,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:45,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352778669] [2022-12-11 20:49:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:45,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:45,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:45,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352778669] [2022-12-11 20:49:45,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352778669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:45,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504743582] [2022-12-11 20:49:45,986 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 20:49:45,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:45,996 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) [2022-12-11 20:49:45,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 20:49:46,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-12-11 20:49:46,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:46,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-11 20:49:46,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:46,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:46,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504743582] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:46,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:46,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 34 [2022-12-11 20:49:46,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812771716] [2022-12-11 20:49:46,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-11 20:49:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:46,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-11 20:49:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2022-12-11 20:49:46,776 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:46,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 430 transitions, 10957 flow. Second operand has 34 states, 34 states have (on average 52.35294117647059) internal successors, (1780), 34 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:46,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:46,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:46,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:47,678 INFO L130 PetriNetUnfolder]: 261/1867 cut-off events. [2022-12-11 20:49:47,678 INFO L131 PetriNetUnfolder]: For 20480/20984 co-relation queries the response was YES. [2022-12-11 20:49:47,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8610 conditions, 1867 events. 261/1867 cut-off events. For 20480/20984 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 12478 event pairs, 0 based on Foata normal form. 43/1713 useless extension candidates. Maximal degree in co-relation 8515. Up to 467 conditions per place. [2022-12-11 20:49:47,690 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 263 selfloop transitions, 189 changer transitions 20/514 dead transitions. [2022-12-11 20:49:47,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 514 transitions, 14253 flow [2022-12-11 20:49:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-11 20:49:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-11 20:49:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2520 transitions. [2022-12-11 20:49:47,692 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8123791102514507 [2022-12-11 20:49:47,692 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 259 predicate places. [2022-12-11 20:49:47,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 514 transitions, 14253 flow [2022-12-11 20:49:47,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 494 transitions, 13653 flow [2022-12-11 20:49:47,704 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 494 transitions, 13653 flow [2022-12-11 20:49:47,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.35294117647059) internal successors, (1780), 34 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:47,704 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:47,704 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:47,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:47,909 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,SelfDestructingSolverStorable13 [2022-12-11 20:49:47,910 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1104659577, now seen corresponding path program 7 times [2022-12-11 20:49:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:47,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061394254] [2022-12-11 20:49:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:47,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:48,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061394254] [2022-12-11 20:49:48,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061394254] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:48,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344518640] [2022-12-11 20:49:48,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-11 20:49:48,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:48,242 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) [2022-12-11 20:49:48,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 20:49:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:48,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-11 20:49:48,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:48,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:48,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344518640] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:48,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:48,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 32 [2022-12-11 20:49:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046451348] [2022-12-11 20:49:48,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:48,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-11 20:49:48,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:48,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-11 20:49:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-12-11 20:49:48,827 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:48,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 494 transitions, 13653 flow. Second operand has 32 states, 32 states have (on average 52.34375) internal successors, (1675), 32 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:48,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:48,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:48,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:49,705 INFO L130 PetriNetUnfolder]: 279/1959 cut-off events. [2022-12-11 20:49:49,706 INFO L131 PetriNetUnfolder]: For 25563/26375 co-relation queries the response was YES. [2022-12-11 20:49:49,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9723 conditions, 1959 events. 279/1959 cut-off events. For 25563/26375 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 13343 event pairs, 0 based on Foata normal form. 51/1805 useless extension candidates. Maximal degree in co-relation 9623. Up to 503 conditions per place. [2022-12-11 20:49:49,717 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 249 selfloop transitions, 239 changer transitions 20/550 dead transitions. [2022-12-11 20:49:49,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 550 transitions, 16349 flow [2022-12-11 20:49:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-11 20:49:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-11 20:49:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2790 transitions. [2022-12-11 20:49:49,719 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8129370629370629 [2022-12-11 20:49:49,720 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 303 predicate places. [2022-12-11 20:49:49,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 550 transitions, 16349 flow [2022-12-11 20:49:49,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 530 transitions, 15709 flow [2022-12-11 20:49:49,731 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 530 transitions, 15709 flow [2022-12-11 20:49:49,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 52.34375) internal successors, (1675), 32 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:49,732 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:49,732 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:49,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:49,936 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,SelfDestructingSolverStorable14 [2022-12-11 20:49:49,937 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:49,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash -520016805, now seen corresponding path program 8 times [2022-12-11 20:49:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:49,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989957606] [2022-12-11 20:49:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:49,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:50,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:50,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989957606] [2022-12-11 20:49:50,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989957606] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:50,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334964190] [2022-12-11 20:49:50,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 20:49:50,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:50,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:50,246 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) [2022-12-11 20:49:50,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-11 20:49:50,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 20:49:50,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:50,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-11 20:49:50,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:50,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:50,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334964190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:50,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:50,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 34 [2022-12-11 20:49:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771382954] [2022-12-11 20:49:50,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:50,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-11 20:49:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:50,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-11 20:49:50,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2022-12-11 20:49:50,758 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:50,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 530 transitions, 15709 flow. Second operand has 34 states, 34 states have (on average 52.35294117647059) internal successors, (1780), 34 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:50,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:50,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:50,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:51,993 INFO L130 PetriNetUnfolder]: 304/2143 cut-off events. [2022-12-11 20:49:51,993 INFO L131 PetriNetUnfolder]: For 31388/32192 co-relation queries the response was YES. [2022-12-11 20:49:51,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 2143 events. 304/2143 cut-off events. For 31388/32192 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 15083 event pairs, 0 based on Foata normal form. 56/1974 useless extension candidates. Maximal degree in co-relation 11023. Up to 547 conditions per place. [2022-12-11 20:49:52,005 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 250 selfloop transitions, 279 changer transitions 23/594 dead transitions. [2022-12-11 20:49:52,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 594 transitions, 18861 flow [2022-12-11 20:49:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-11 20:49:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-12-11 20:49:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3115 transitions. [2022-12-11 20:49:52,008 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8137408568443051 [2022-12-11 20:49:52,008 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 353 predicate places. [2022-12-11 20:49:52,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 594 transitions, 18861 flow [2022-12-11 20:49:52,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 571 transitions, 18079 flow [2022-12-11 20:49:52,021 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 571 transitions, 18079 flow [2022-12-11 20:49:52,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.35294117647059) internal successors, (1780), 34 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:52,022 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:52,022 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:52,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:52,242 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,SelfDestructingSolverStorable15 [2022-12-11 20:49:52,242 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash 158558641, now seen corresponding path program 9 times [2022-12-11 20:49:52,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:52,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113687249] [2022-12-11 20:49:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:52,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113687249] [2022-12-11 20:49:52,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113687249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:52,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612635758] [2022-12-11 20:49:52,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:49:52,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:52,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:52,563 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) [2022-12-11 20:49:52,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-11 20:49:52,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-11 20:49:52,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:52,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-11 20:49:52,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:52,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:52,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612635758] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:52,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:52,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 25 [2022-12-11 20:49:52,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711803006] [2022-12-11 20:49:52,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-11 20:49:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-11 20:49:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-12-11 20:49:52,949 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:52,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 571 transitions, 18079 flow. Second operand has 25 states, 25 states have (on average 52.12) internal successors, (1303), 25 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:52,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:52,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:52,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:53,842 INFO L130 PetriNetUnfolder]: 317/2247 cut-off events. [2022-12-11 20:49:53,842 INFO L131 PetriNetUnfolder]: For 37375/38203 co-relation queries the response was YES. [2022-12-11 20:49:53,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 2247 events. 317/2247 cut-off events. For 37375/38203 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 16061 event pairs, 0 based on Foata normal form. 61/2073 useless extension candidates. Maximal degree in co-relation 12125. Up to 573 conditions per place. [2022-12-11 20:49:53,858 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 288 selfloop transitions, 270 changer transitions 8/608 dead transitions. [2022-12-11 20:49:53,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 608 transitions, 20469 flow [2022-12-11 20:49:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-11 20:49:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-11 20:49:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2577 transitions. [2022-12-11 20:49:53,860 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8134469696969697 [2022-12-11 20:49:53,860 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 392 predicate places. [2022-12-11 20:49:53,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 458 places, 608 transitions, 20469 flow [2022-12-11 20:49:53,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 600 transitions, 20181 flow [2022-12-11 20:49:53,876 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 600 transitions, 20181 flow [2022-12-11 20:49:53,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 52.12) internal successors, (1303), 25 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:53,877 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:53,877 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:53,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:54,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-11 20:49:54,082 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:54,082 INFO L85 PathProgramCache]: Analyzing trace with hash 162766641, now seen corresponding path program 10 times [2022-12-11 20:49:54,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:54,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831631397] [2022-12-11 20:49:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:54,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:54,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831631397] [2022-12-11 20:49:54,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831631397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:54,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673904355] [2022-12-11 20:49:54,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 20:49:54,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:54,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:54,450 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) [2022-12-11 20:49:54,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-11 20:49:54,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 20:49:54,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:54,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-11 20:49:54,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:54,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:49:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:49:54,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673904355] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:49:54,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:49:54,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2022-12-11 20:49:54,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663246316] [2022-12-11 20:49:54,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:49:54,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-11 20:49:54,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:54,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-11 20:49:54,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2022-12-11 20:49:54,897 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66 [2022-12-11 20:49:54,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 600 transitions, 20181 flow. Second operand has 26 states, 26 states have (on average 52.15384615384615) internal successors, (1356), 26 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:54,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:54,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66 [2022-12-11 20:49:54,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:55,913 INFO L130 PetriNetUnfolder]: 311/2225 cut-off events. [2022-12-11 20:49:55,913 INFO L131 PetriNetUnfolder]: For 41521/42305 co-relation queries the response was YES. [2022-12-11 20:49:55,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12656 conditions, 2225 events. 311/2225 cut-off events. For 41521/42305 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 15822 event pairs, 0 based on Foata normal form. 66/2058 useless extension candidates. Maximal degree in co-relation 12541. Up to 565 conditions per place. [2022-12-11 20:49:55,927 INFO L137 encePairwiseOnDemand]: 59/66 looper letters, 286 selfloop transitions, 272 changer transitions 12/612 dead transitions. [2022-12-11 20:49:55,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 612 transitions, 21753 flow [2022-12-11 20:49:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-11 20:49:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-11 20:49:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2628 transitions. [2022-12-11 20:49:55,937 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8126159554730983 [2022-12-11 20:49:55,963 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 437 predicate places. [2022-12-11 20:49:55,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 503 places, 612 transitions, 21753 flow [2022-12-11 20:49:55,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 600 transitions, 21297 flow [2022-12-11 20:49:55,979 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 600 transitions, 21297 flow [2022-12-11 20:49:55,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 52.15384615384615) internal successors, (1356), 26 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:55,980 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:55,980 INFO L214 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:55,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-11 20:49:56,185 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,SelfDestructingSolverStorable17 [2022-12-11 20:49:56,185 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:56,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1441297031, now seen corresponding path program 11 times [2022-12-11 20:49:56,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:56,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464801293] [2022-12-11 20:49:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 347 proven. 86 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 20:49:56,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:56,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464801293] [2022-12-11 20:49:56,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464801293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:56,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238151914] [2022-12-11 20:49:56,505 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 20:49:56,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:56,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:56,506 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) [2022-12-11 20:49:56,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-11 20:49:56,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-12-11 20:49:56,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:56,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-11 20:49:56,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-11 20:49:56,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 20:49:56,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238151914] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:56,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 20:49:56,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-12-11 20:49:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424028851] [2022-12-11 20:49:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:56,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-11 20:49:56,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:56,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-11 20:49:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-12-11 20:49:56,702 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 66 [2022-12-11 20:49:56,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 600 transitions, 21297 flow. Second operand has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:56,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:56,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 66 [2022-12-11 20:49:56,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:49:58,587 INFO L130 PetriNetUnfolder]: 1644/8784 cut-off events. [2022-12-11 20:49:58,587 INFO L131 PetriNetUnfolder]: For 177842/180840 co-relation queries the response was YES. [2022-12-11 20:49:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55097 conditions, 8784 events. 1644/8784 cut-off events. For 177842/180840 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 93844 event pairs, 1 based on Foata normal form. 2/7846 useless extension candidates. Maximal degree in co-relation 54980. Up to 2386 conditions per place. [2022-12-11 20:49:58,635 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 14 selfloop transitions, 41 changer transitions 419/606 dead transitions. [2022-12-11 20:49:58,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 606 transitions, 20139 flow [2022-12-11 20:49:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-11 20:49:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-11 20:49:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1868 transitions. [2022-12-11 20:49:58,637 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8576675849403123 [2022-12-11 20:49:58,637 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 460 predicate places. [2022-12-11 20:49:58,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 526 places, 606 transitions, 20139 flow [2022-12-11 20:49:58,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 187 transitions, 4057 flow [2022-12-11 20:49:58,652 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 187 transitions, 4057 flow [2022-12-11 20:49:58,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:58,653 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:49:58,653 INFO L214 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:49:58,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-11 20:49:58,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:58,858 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:49:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:49:58,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1498229106, now seen corresponding path program 12 times [2022-12-11 20:49:58,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:49:58,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514375338] [2022-12-11 20:49:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:49:58,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:49:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:49:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 386 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 20:49:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:49:59,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514375338] [2022-12-11 20:49:59,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514375338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:49:59,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365976601] [2022-12-11 20:49:59,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-11 20:49:59,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:49:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:49:59,150 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) [2022-12-11 20:49:59,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-11 20:49:59,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-12-11 20:49:59,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:49:59,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-11 20:49:59,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:49:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 20:49:59,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 20:49:59,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365976601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:49:59,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 20:49:59,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-12-11 20:49:59,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877942713] [2022-12-11 20:49:59,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:49:59,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-11 20:49:59,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:49:59,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-11 20:49:59,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-12-11 20:49:59,324 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 66 [2022-12-11 20:49:59,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 187 transitions, 4057 flow. Second operand has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:49:59,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:49:59,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 66 [2022-12-11 20:49:59,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:50:00,645 INFO L130 PetriNetUnfolder]: 1901/8041 cut-off events. [2022-12-11 20:50:00,646 INFO L131 PetriNetUnfolder]: For 169446/177401 co-relation queries the response was YES. [2022-12-11 20:50:00,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62831 conditions, 8041 events. 1901/8041 cut-off events. For 169446/177401 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 82434 event pairs, 1 based on Foata normal form. 0/7177 useless extension candidates. Maximal degree in co-relation 62712. Up to 2761 conditions per place. [2022-12-11 20:50:00,700 INFO L137 encePairwiseOnDemand]: 60/66 looper letters, 0 selfloop transitions, 0 changer transitions 223/223 dead transitions. [2022-12-11 20:50:00,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 223 transitions, 3915 flow [2022-12-11 20:50:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-11 20:50:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-11 20:50:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1837 transitions. [2022-12-11 20:50:00,701 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8434343434343434 [2022-12-11 20:50:00,702 INFO L295 CegarLoopForPetriNet]: 66 programPoint places, 399 predicate places. [2022-12-11 20:50:00,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 465 places, 223 transitions, 3915 flow [2022-12-11 20:50:00,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 20:50:00,711 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 20:50:00,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 55.91304347826087) internal successors, (1286), 23 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:50:00,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 20:50:00,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 20:50:00,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 20:50:00,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-11 20:50:00,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:50:00,918 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 2, 2, 1, 1] [2022-12-11 20:50:00,920 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:50:00,920 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:50:00,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:50:00 BasicIcfg [2022-12-11 20:50:00,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:50:00,925 INFO L158 Benchmark]: Toolchain (without parser) took 28050.51ms. Allocated memory was 208.7MB in the beginning and 543.2MB in the end (delta: 334.5MB). Free memory was 181.8MB in the beginning and 166.0MB in the end (delta: 15.8MB). Peak memory consumption was 350.3MB. Max. memory is 8.0GB. [2022-12-11 20:50:00,925 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 208.7MB. Free memory is still 185.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:50:00,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.65ms. Allocated memory is still 208.7MB. Free memory was 181.8MB in the beginning and 161.4MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-11 20:50:00,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.51ms. Allocated memory is still 208.7MB. Free memory was 161.4MB in the beginning and 159.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:50:00,926 INFO L158 Benchmark]: Boogie Preprocessor took 31.53ms. Allocated memory is still 208.7MB. Free memory was 159.3MB in the beginning and 158.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 20:50:00,926 INFO L158 Benchmark]: RCFGBuilder took 296.04ms. Allocated memory is still 208.7MB. Free memory was 158.2MB in the beginning and 145.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-11 20:50:00,926 INFO L158 Benchmark]: TraceAbstraction took 27354.06ms. Allocated memory was 208.7MB in the beginning and 543.2MB in the end (delta: 334.5MB). Free memory was 144.6MB in the beginning and 166.0MB in the end (delta: -21.4MB). Peak memory consumption was 313.6MB. Max. memory is 8.0GB. [2022-12-11 20:50:00,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 208.7MB. Free memory is still 185.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 318.65ms. Allocated memory is still 208.7MB. Free memory was 181.8MB in the beginning and 161.4MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.51ms. Allocated memory is still 208.7MB. Free memory was 161.4MB in the beginning and 159.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.53ms. Allocated memory is still 208.7MB. Free memory was 159.3MB in the beginning and 158.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 296.04ms. Allocated memory is still 208.7MB. Free memory was 158.2MB in the beginning and 145.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 27354.06ms. Allocated memory was 208.7MB in the beginning and 543.2MB in the end (delta: 334.5MB). Free memory was 144.6MB in the beginning and 166.0MB in the end (delta: -21.4MB). Peak memory consumption was 313.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27.3s, OverallIterations: 20, TraceHistogramMax: 11, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2501 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2501 mSDsluCounter, 363 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 533 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3353 IncrementalHoareTripleChecker+Invalid, 3886 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 533 mSolverCounterUnsat, 99 mSDtfsCounter, 3353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3416 GetRequests, 2451 SyntacticMatches, 115 SemanticMatches, 850 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14593 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21297occurred in iteration=18, InterpolantAutomatonStates: 630, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 27151 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 3130 NumberOfCodeBlocks, 3130 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 4269 ConstructedInterpolants, 0 QuantifiedInterpolants, 16648 SizeOfPredicates, 217 NumberOfNonLiveVariables, 3182 ConjunctsInSsa, 282 ConjunctsInUnsatCore, 46 InterpolantComputations, 8 PerfectInterpolantSequences, 1633/10013 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 20:50:00,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...