/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:54:28,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:54:28,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:54:28,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 22:54:28,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 22:54:28,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 22:54:28,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 22:54:28,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 22:54:28,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 22:54:28,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 22:54:28,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 22:54:28,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 22:54:28,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:54:28,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:54:28,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:54:28,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:54:28,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:54:28,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:54:28,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:54:28,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:54:28,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:54:28,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:54:28,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:54:28,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:54:28,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 22:54:28,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 22:54:28,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 22:54:28,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 22:54:28,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 22:54:28,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 22:54:28,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 22:54:28,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 22:54:28,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 22:54:28,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 22:54:28,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 22:54:28,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 22:54:28,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 22:54:28,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 22:54:28,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:54:28,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:54:28,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:54:28,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 22:54:28,324 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:54:28,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:54:28,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:54:28,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:54:28,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:54:28,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:54:28,327 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:54:28,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:54:28,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:54:28,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:54:28,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:54:28,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:54:28,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:54:28,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:54:28,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:54:28,329 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:54:28,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:54:28,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:54:28,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:54:28,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:54:28,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:54:28,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:54:28,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:54:28,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:54:28,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:54:28,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:54:28,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:54:28,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:54:28,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:54:28,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:54:28,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:54:28,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:54:28,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:54:28,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:54:28,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:54:28,698 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:54:28,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-12 22:54:29,815 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:54:30,061 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:54:30,062 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-12 22:54:30,076 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca801eabe/524eaaffa92d4142b7e8c9020982d972/FLAGb9b69c690 [2022-12-12 22:54:30,096 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca801eabe/524eaaffa92d4142b7e8c9020982d972 [2022-12-12 22:54:30,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:54:30,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:54:30,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:54:30,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:54:30,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:54:30,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f28c9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30, skipping insertion in model container [2022-12-12 22:54:30,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:54:30,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:54:30,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,279 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-12 22:54:30,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:54:30,296 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:54:30,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,312 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,313 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,314 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,315 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,317 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:54:30,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:54:30,336 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-12-12 22:54:30,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:54:30,364 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:54:30,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30 WrapperNode [2022-12-12 22:54:30,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:54:30,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:54:30,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:54:30,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:54:30,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,429 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2022-12-12 22:54:30,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:54:30,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:54:30,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:54:30,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:54:30,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:54:30,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:54:30,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:54:30,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:54:30,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (1/1) ... [2022-12-12 22:54:30,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:54:30,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:54:30,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 22:54:30,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 22:54:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:54:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:54:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:54:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 22:54:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 22:54:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 22:54:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 22:54:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 22:54:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 22:54:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 22:54:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:54:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 22:54:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 22:54:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 22:54:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:54:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:54:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:54:30,567 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 22:54:30,722 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:54:30,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:54:31,178 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:54:31,296 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:54:31,297 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 22:54:31,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:54:31 BoogieIcfgContainer [2022-12-12 22:54:31,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:54:31,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:54:31,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:54:31,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:54:31,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:54:30" (1/3) ... [2022-12-12 22:54:31,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1278a4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:54:31, skipping insertion in model container [2022-12-12 22:54:31,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:54:30" (2/3) ... [2022-12-12 22:54:31,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1278a4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:54:31, skipping insertion in model container [2022-12-12 22:54:31,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:54:31" (3/3) ... [2022-12-12 22:54:31,306 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-12-12 22:54:31,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:54:31,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 22:54:31,322 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:54:31,410 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 22:54:31,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 256 transitions, 536 flow [2022-12-12 22:54:31,543 INFO L130 PetriNetUnfolder]: 25/253 cut-off events. [2022-12-12 22:54:31,543 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:54:31,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 25/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 206 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 215. Up to 4 conditions per place. [2022-12-12 22:54:31,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 256 transitions, 536 flow [2022-12-12 22:54:31,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2022-12-12 22:54:31,562 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:54:31,578 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 243 transitions, 504 flow [2022-12-12 22:54:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 243 transitions, 504 flow [2022-12-12 22:54:31,632 INFO L130 PetriNetUnfolder]: 25/243 cut-off events. [2022-12-12 22:54:31,632 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:54:31,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 243 events. 25/243 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 215. Up to 4 conditions per place. [2022-12-12 22:54:31,637 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 243 transitions, 504 flow [2022-12-12 22:54:31,637 INFO L226 LiptonReduction]: Number of co-enabled transitions 2820 [2022-12-12 22:54:41,174 INFO L241 LiptonReduction]: Total number of compositions: 210 [2022-12-12 22:54:41,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:54:41,193 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;@6b0c2d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:54:41,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 22:54:41,200 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2022-12-12 22:54:41,201 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:54:41,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:41,201 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] [2022-12-12 22:54:41,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1935456720, now seen corresponding path program 1 times [2022-12-12 22:54:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:41,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64027854] [2022-12-12 22:54:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:54:41,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:41,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64027854] [2022-12-12 22:54:41,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64027854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:54:41,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:54:41,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:54:41,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440654490] [2022-12-12 22:54:41,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:54:41,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:54:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:54:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:54:41,608 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 22:54:41,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:41,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:41,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 22:54:41,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:41,758 INFO L130 PetriNetUnfolder]: 472/693 cut-off events. [2022-12-12 22:54:41,758 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-12 22:54:41,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 693 events. 472/693 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2150 event pairs, 135 based on Foata normal form. 30/576 useless extension candidates. Maximal degree in co-relation 1219. Up to 449 conditions per place. [2022-12-12 22:54:41,764 INFO L137 encePairwiseOnDemand]: 26/33 looper letters, 40 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2022-12-12 22:54:41,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 198 flow [2022-12-12 22:54:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:54:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:54:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 22:54:41,774 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2022-12-12 22:54:41,778 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2022-12-12 22:54:41,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 44 transitions, 198 flow [2022-12-12 22:54:41,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 44 transitions, 198 flow [2022-12-12 22:54:41,782 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 44 transitions, 198 flow [2022-12-12 22:54:41,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:41,783 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:41,783 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] [2022-12-12 22:54:41,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:54:41,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1141673692, now seen corresponding path program 1 times [2022-12-12 22:54:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567599692] [2022-12-12 22:54:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:41,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:54:42,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:42,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567599692] [2022-12-12 22:54:42,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567599692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:54:42,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:54:42,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:54:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006568913] [2022-12-12 22:54:42,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:54:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:54:42,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:42,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:54:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:54:42,083 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 22:54:42,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 44 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:42,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:42,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 22:54:42,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:42,254 INFO L130 PetriNetUnfolder]: 501/754 cut-off events. [2022-12-12 22:54:42,255 INFO L131 PetriNetUnfolder]: For 76/82 co-relation queries the response was YES. [2022-12-12 22:54:42,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 754 events. 501/754 cut-off events. For 76/82 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2361 event pairs, 162 based on Foata normal form. 26/630 useless extension candidates. Maximal degree in co-relation 1799. Up to 691 conditions per place. [2022-12-12 22:54:42,262 INFO L137 encePairwiseOnDemand]: 27/33 looper letters, 42 selfloop transitions, 2 changer transitions 14/59 dead transitions. [2022-12-12 22:54:42,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 383 flow [2022-12-12 22:54:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:54:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:54:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-12-12 22:54:42,264 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2022-12-12 22:54:42,264 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2022-12-12 22:54:42,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 59 transitions, 383 flow [2022-12-12 22:54:42,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 45 transitions, 290 flow [2022-12-12 22:54:42,268 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 290 flow [2022-12-12 22:54:42,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:42,268 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:42,268 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] [2022-12-12 22:54:42,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 22:54:42,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1894771251, now seen corresponding path program 1 times [2022-12-12 22:54:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:42,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141153972] [2022-12-12 22:54:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:42,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:54:42,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:42,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141153972] [2022-12-12 22:54:42,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141153972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:54:42,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:54:42,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 22:54:42,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503372419] [2022-12-12 22:54:42,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:54:42,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:54:42,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:54:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:54:42,434 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 22:54:42,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 45 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:42,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:42,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 22:54:42,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:42,675 INFO L130 PetriNetUnfolder]: 759/1173 cut-off events. [2022-12-12 22:54:42,676 INFO L131 PetriNetUnfolder]: For 114/118 co-relation queries the response was YES. [2022-12-12 22:54:42,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 1173 events. 759/1173 cut-off events. For 114/118 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4422 event pairs, 381 based on Foata normal form. 56/1040 useless extension candidates. Maximal degree in co-relation 2378. Up to 1167 conditions per place. [2022-12-12 22:54:42,682 INFO L137 encePairwiseOnDemand]: 27/33 looper letters, 43 selfloop transitions, 2 changer transitions 35/81 dead transitions. [2022-12-12 22:54:42,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 81 transitions, 690 flow [2022-12-12 22:54:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:54:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:54:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2022-12-12 22:54:42,685 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2022-12-12 22:54:42,686 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2022-12-12 22:54:42,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 81 transitions, 690 flow [2022-12-12 22:54:42,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 46 transitions, 386 flow [2022-12-12 22:54:42,693 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 46 transitions, 386 flow [2022-12-12 22:54:42,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:42,693 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:42,693 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:54:42,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 22:54:42,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash 973479154, now seen corresponding path program 1 times [2022-12-12 22:54:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:42,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467998773] [2022-12-12 22:54:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:42,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:54:42,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:42,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467998773] [2022-12-12 22:54:42,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467998773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:54:42,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:54:42,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 22:54:42,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686810716] [2022-12-12 22:54:42,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:54:42,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:54:42,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:54:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:54:42,835 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 22:54:42,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 46 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:42,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:42,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 22:54:42,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:43,041 INFO L130 PetriNetUnfolder]: 835/1241 cut-off events. [2022-12-12 22:54:43,041 INFO L131 PetriNetUnfolder]: For 151/157 co-relation queries the response was YES. [2022-12-12 22:54:43,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6346 conditions, 1241 events. 835/1241 cut-off events. For 151/157 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4479 event pairs, 258 based on Foata normal form. 32/1032 useless extension candidates. Maximal degree in co-relation 2958. Up to 1237 conditions per place. [2022-12-12 22:54:43,049 INFO L137 encePairwiseOnDemand]: 28/33 looper letters, 44 selfloop transitions, 2 changer transitions 33/80 dead transitions. [2022-12-12 22:54:43,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 80 transitions, 837 flow [2022-12-12 22:54:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:54:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:54:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2022-12-12 22:54:43,050 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2022-12-12 22:54:43,051 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2022-12-12 22:54:43,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 80 transitions, 837 flow [2022-12-12 22:54:43,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 47 transitions, 486 flow [2022-12-12 22:54:43,056 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 486 flow [2022-12-12 22:54:43,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:43,056 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:43,056 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:54:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 22:54:43,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash -468057538, now seen corresponding path program 1 times [2022-12-12 22:54:43,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061532953] [2022-12-12 22:54:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:43,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:54:43,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:43,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061532953] [2022-12-12 22:54:43,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061532953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:54:43,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:54:43,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 22:54:43,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998120509] [2022-12-12 22:54:43,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:54:43,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:54:43,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:54:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:54:43,232 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 22:54:43,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:43,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:43,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 22:54:43,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:43,439 INFO L130 PetriNetUnfolder]: 839/1252 cut-off events. [2022-12-12 22:54:43,440 INFO L131 PetriNetUnfolder]: For 374/398 co-relation queries the response was YES. [2022-12-12 22:54:43,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7544 conditions, 1252 events. 839/1252 cut-off events. For 374/398 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4717 event pairs, 145 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 6253. Up to 1229 conditions per place. [2022-12-12 22:54:43,449 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 66 selfloop transitions, 3 changer transitions 9/79 dead transitions. [2022-12-12 22:54:43,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 79 transitions, 983 flow [2022-12-12 22:54:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:54:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:54:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2022-12-12 22:54:43,450 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2022-12-12 22:54:43,451 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2022-12-12 22:54:43,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 79 transitions, 983 flow [2022-12-12 22:54:43,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 70 transitions, 863 flow [2022-12-12 22:54:43,459 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 70 transitions, 863 flow [2022-12-12 22:54:43,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:43,460 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:43,460 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] [2022-12-12 22:54:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 22:54:43,460 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash 944054393, now seen corresponding path program 1 times [2022-12-12 22:54:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:43,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481970567] [2022-12-12 22:54:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:43,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:54:43,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:43,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481970567] [2022-12-12 22:54:43,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481970567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:54:43,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784229626] [2022-12-12 22:54:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:43,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:54:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:54:43,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:54:43,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 22:54:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:44,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 22:54:44,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:54:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:54:44,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 22:54:44,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784229626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:54:44,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 22:54:44,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-12-12 22:54:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074226940] [2022-12-12 22:54:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:54:44,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:54:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:54:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 22:54:44,192 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 22:54:44,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 70 transitions, 863 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:44,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:44,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 22:54:44,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:44,345 INFO L130 PetriNetUnfolder]: 552/829 cut-off events. [2022-12-12 22:54:44,345 INFO L131 PetriNetUnfolder]: For 717/717 co-relation queries the response was YES. [2022-12-12 22:54:44,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5624 conditions, 829 events. 552/829 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2646 event pairs, 125 based on Foata normal form. 24/708 useless extension candidates. Maximal degree in co-relation 4802. Up to 771 conditions per place. [2022-12-12 22:54:44,352 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 54 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2022-12-12 22:54:44,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 794 flow [2022-12-12 22:54:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:54:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:54:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2022-12-12 22:54:44,353 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2022-12-12 22:54:44,354 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2022-12-12 22:54:44,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 56 transitions, 794 flow [2022-12-12 22:54:44,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 56 transitions, 794 flow [2022-12-12 22:54:44,361 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 56 transitions, 794 flow [2022-12-12 22:54:44,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:44,361 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:44,361 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] [2022-12-12 22:54:44,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 22:54:44,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 22:54:44,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash 584239853, now seen corresponding path program 2 times [2022-12-12 22:54:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:44,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436923025] [2022-12-12 22:54:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:44,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:54:44,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:44,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436923025] [2022-12-12 22:54:44,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436923025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:54:44,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502183467] [2022-12-12 22:54:44,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 22:54:44,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:54:44,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:54:44,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:54:44,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 22:54:45,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:54:45,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:54:45,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 22:54:45,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:54:45,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2022-12-12 22:54:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:54:45,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:54:45,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 22:54:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:54:45,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502183467] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:54:45,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:54:45,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-12-12 22:54:45,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228002524] [2022-12-12 22:54:45,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:54:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 22:54:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:45,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 22:54:45,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-12-12 22:54:45,725 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 22:54:45,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 56 transitions, 794 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:45,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:45,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 22:54:45,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:46,136 INFO L130 PetriNetUnfolder]: 1020/1510 cut-off events. [2022-12-12 22:54:46,136 INFO L131 PetriNetUnfolder]: For 2688/2688 co-relation queries the response was YES. [2022-12-12 22:54:46,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 1510 events. 1020/1510 cut-off events. For 2688/2688 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5625 event pairs, 91 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 10958. Up to 1408 conditions per place. [2022-12-12 22:54:46,147 INFO L137 encePairwiseOnDemand]: 27/33 looper letters, 100 selfloop transitions, 10 changer transitions 28/140 dead transitions. [2022-12-12 22:54:46,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 140 transitions, 2297 flow [2022-12-12 22:54:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 22:54:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 22:54:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2022-12-12 22:54:46,148 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2022-12-12 22:54:46,149 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2022-12-12 22:54:46,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 140 transitions, 2297 flow [2022-12-12 22:54:46,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 112 transitions, 1828 flow [2022-12-12 22:54:46,158 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 112 transitions, 1828 flow [2022-12-12 22:54:46,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:46,158 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:46,158 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:54:46,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 22:54:46,365 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,SelfDestructingSolverStorable6 [2022-12-12 22:54:46,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:46,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1815424178, now seen corresponding path program 3 times [2022-12-12 22:54:46,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:46,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897472039] [2022-12-12 22:54:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:46,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:54:46,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:46,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897472039] [2022-12-12 22:54:46,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897472039] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:54:46,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815326420] [2022-12-12 22:54:46,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 22:54:46,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:54:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:54:46,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:54:46,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 22:54:46,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 22:54:46,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:54:46,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 22:54:46,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:54:47,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2022-12-12 22:54:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:54:47,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:54:47,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 22:54:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:54:47,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815326420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:54:47,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:54:47,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-12 22:54:47,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613675002] [2022-12-12 22:54:47,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:54:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 22:54:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:47,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 22:54:47,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-12-12 22:54:47,508 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 22:54:47,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 112 transitions, 1828 flow. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:47,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:47,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 22:54:47,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:48,059 INFO L130 PetriNetUnfolder]: 1160/1775 cut-off events. [2022-12-12 22:54:48,060 INFO L131 PetriNetUnfolder]: For 5220/5220 co-relation queries the response was YES. [2022-12-12 22:54:48,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15344 conditions, 1775 events. 1160/1775 cut-off events. For 5220/5220 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7036 event pairs, 84 based on Foata normal form. 84/1611 useless extension candidates. Maximal degree in co-relation 10294. Up to 1631 conditions per place. [2022-12-12 22:54:48,072 INFO L137 encePairwiseOnDemand]: 25/33 looper letters, 119 selfloop transitions, 13 changer transitions 98/230 dead transitions. [2022-12-12 22:54:48,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 230 transitions, 4218 flow [2022-12-12 22:54:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 22:54:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 22:54:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2022-12-12 22:54:48,077 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27575757575757576 [2022-12-12 22:54:48,078 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2022-12-12 22:54:48,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 230 transitions, 4218 flow [2022-12-12 22:54:48,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 132 transitions, 2421 flow [2022-12-12 22:54:48,091 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 132 transitions, 2421 flow [2022-12-12 22:54:48,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:48,091 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:48,091 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] [2022-12-12 22:54:48,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 22:54:48,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:54:48,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:48,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:48,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1786264761, now seen corresponding path program 4 times [2022-12-12 22:54:48,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:48,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223466909] [2022-12-12 22:54:48,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:48,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:54:49,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:49,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223466909] [2022-12-12 22:54:49,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223466909] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:54:49,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952960633] [2022-12-12 22:54:49,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 22:54:49,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:54:49,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:54:49,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:54:49,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 22:54:49,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 22:54:49,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:54:49,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 22:54:49,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:54:49,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2022-12-12 22:54:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:54:49,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:54:49,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 22:54:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:54:49,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952960633] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:54:49,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:54:49,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2022-12-12 22:54:49,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548965554] [2022-12-12 22:54:49,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:54:49,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-12 22:54:49,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:54:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-12 22:54:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2022-12-12 22:54:49,852 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 22:54:49,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 132 transitions, 2421 flow. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:49,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:54:49,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 22:54:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:54:51,560 INFO L130 PetriNetUnfolder]: 2649/3845 cut-off events. [2022-12-12 22:54:51,561 INFO L131 PetriNetUnfolder]: For 9754/9754 co-relation queries the response was YES. [2022-12-12 22:54:51,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36972 conditions, 3845 events. 2649/3845 cut-off events. For 9754/9754 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16789 event pairs, 96 based on Foata normal form. 0/3153 useless extension candidates. Maximal degree in co-relation 23972. Up to 3581 conditions per place. [2022-12-12 22:54:51,586 INFO L137 encePairwiseOnDemand]: 23/33 looper letters, 228 selfloop transitions, 26 changer transitions 199/453 dead transitions. [2022-12-12 22:54:51,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 453 transitions, 9135 flow [2022-12-12 22:54:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 22:54:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 22:54:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 270 transitions. [2022-12-12 22:54:51,589 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2922077922077922 [2022-12-12 22:54:51,590 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 49 predicate places. [2022-12-12 22:54:51,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 453 transitions, 9135 flow [2022-12-12 22:54:51,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 254 transitions, 5173 flow [2022-12-12 22:54:51,612 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 254 transitions, 5173 flow [2022-12-12 22:54:51,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:54:51,613 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:54:51,613 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] [2022-12-12 22:54:51,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 22:54:51,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:54:51,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:54:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:54:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 609713977, now seen corresponding path program 5 times [2022-12-12 22:54:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:54:51,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567115311] [2022-12-12 22:54:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:54:51,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:54:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:54:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 22:54:52,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:54:52,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567115311] [2022-12-12 22:54:52,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567115311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:54:52,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373067904] [2022-12-12 22:54:52,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 22:54:52,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:54:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:54:52,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:54:52,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 22:54:52,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 22:54:52,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:54:52,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 22:54:52,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:54:53,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:54:53,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 272 treesize of output 434 [2022-12-12 22:55:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 22:55:09,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:55:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 22:55:10,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373067904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:55:10,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:55:10,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 23 [2022-12-12 22:55:10,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291221237] [2022-12-12 22:55:10,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:55:10,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 22:55:10,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:55:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 22:55:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-12-12 22:55:10,463 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 22:55:10,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 254 transitions, 5173 flow. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:55:10,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:55:10,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 22:55:10,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:55:14,993 INFO L130 PetriNetUnfolder]: 3187/4705 cut-off events. [2022-12-12 22:55:14,994 INFO L131 PetriNetUnfolder]: For 9820/9820 co-relation queries the response was YES. [2022-12-12 22:55:15,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50784 conditions, 4705 events. 3187/4705 cut-off events. For 9820/9820 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 21961 event pairs, 173 based on Foata normal form. 4/3857 useless extension candidates. Maximal degree in co-relation 32047. Up to 4449 conditions per place. [2022-12-12 22:55:15,019 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 220 selfloop transitions, 55 changer transitions 359/634 dead transitions. [2022-12-12 22:55:15,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 634 transitions, 14203 flow [2022-12-12 22:55:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 22:55:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 22:55:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 318 transitions. [2022-12-12 22:55:15,022 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2022-12-12 22:55:15,022 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 66 predicate places. [2022-12-12 22:55:15,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 634 transitions, 14203 flow [2022-12-12 22:55:15,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 275 transitions, 6116 flow [2022-12-12 22:55:15,043 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 275 transitions, 6116 flow [2022-12-12 22:55:15,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:55:15,043 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:55:15,043 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:55:15,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 22:55:15,250 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,SelfDestructingSolverStorable9 [2022-12-12 22:55:15,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:55:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:55:15,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1835337292, now seen corresponding path program 6 times [2022-12-12 22:55:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:55:15,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837087122] [2022-12-12 22:55:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:55:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:55:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:55:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 22:55:15,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:55:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837087122] [2022-12-12 22:55:15,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837087122] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:55:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302323527] [2022-12-12 22:55:15,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 22:55:15,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:55:15,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:55:15,979 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:55:15,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 22:55:16,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 22:55:16,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:55:16,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 22:55:16,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:55:16,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-12-12 22:55:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 22:55:16,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:55:16,705 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-12 22:55:16,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-12 22:55:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 22:55:16,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302323527] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:55:16,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:55:16,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 18 [2022-12-12 22:55:16,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560758841] [2022-12-12 22:55:16,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:55:16,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 22:55:16,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:55:16,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 22:55:16,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-12-12 22:55:16,743 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 22:55:16,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 275 transitions, 6116 flow. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:55:16,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:55:16,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 22:55:16,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:55:19,139 INFO L130 PetriNetUnfolder]: 3415/5269 cut-off events. [2022-12-12 22:55:19,139 INFO L131 PetriNetUnfolder]: For 11780/11780 co-relation queries the response was YES. [2022-12-12 22:55:19,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61179 conditions, 5269 events. 3415/5269 cut-off events. For 11780/11780 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 27858 event pairs, 130 based on Foata normal form. 53/4627 useless extension candidates. Maximal degree in co-relation 57606. Up to 5179 conditions per place. [2022-12-12 22:55:19,180 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 589 selfloop transitions, 280 changer transitions 40/909 dead transitions. [2022-12-12 22:55:19,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 909 transitions, 21720 flow [2022-12-12 22:55:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 22:55:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 22:55:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 377 transitions. [2022-12-12 22:55:19,187 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.24835309617918314 [2022-12-12 22:55:19,188 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 91 predicate places. [2022-12-12 22:55:19,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 909 transitions, 21720 flow [2022-12-12 22:55:19,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 869 transitions, 20727 flow [2022-12-12 22:55:19,225 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 869 transitions, 20727 flow [2022-12-12 22:55:19,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:55:19,226 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:55:19,226 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:55:19,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 22:55:19,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:55:19,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:55:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:55:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1028231525, now seen corresponding path program 7 times [2022-12-12 22:55:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:55:19,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914213773] [2022-12-12 22:55:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:55:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:55:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:55:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 22:55:20,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:55:20,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914213773] [2022-12-12 22:55:20,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914213773] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:55:20,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360119862] [2022-12-12 22:55:20,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 22:55:20,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:55:20,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:55:20,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:55:20,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 22:55:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:55:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-12 22:55:20,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:55:21,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:55:21,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 81 [2022-12-12 22:55:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 22:55:22,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:55:22,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 22:55:23,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:55:23,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 13 [2022-12-12 22:55:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 22:55:23,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360119862] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:55:23,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:55:23,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 13] total 43 [2022-12-12 22:55:23,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552516090] [2022-12-12 22:55:23,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:55:23,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-12 22:55:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:55:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-12 22:55:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2022-12-12 22:55:23,905 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 22:55:23,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 869 transitions, 20727 flow. Second operand has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:55:23,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:55:23,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 22:55:23,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:55:59,988 INFO L130 PetriNetUnfolder]: 39414/57949 cut-off events. [2022-12-12 22:55:59,988 INFO L131 PetriNetUnfolder]: For 122338/122338 co-relation queries the response was YES. [2022-12-12 22:56:00,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733361 conditions, 57949 events. 39414/57949 cut-off events. For 122338/122338 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 399236 event pairs, 1060 based on Foata normal form. 252/48216 useless extension candidates. Maximal degree in co-relation 350319. Up to 57691 conditions per place. [2022-12-12 22:56:00,486 INFO L137 encePairwiseOnDemand]: 17/33 looper letters, 7299 selfloop transitions, 3267 changer transitions 482/11048 dead transitions. [2022-12-12 22:56:00,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 11048 transitions, 286621 flow [2022-12-12 22:56:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-12-12 22:56:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2022-12-12 22:56:00,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 1954 transitions. [2022-12-12 22:56:00,493 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.33643250688705234 [2022-12-12 22:56:00,493 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 265 predicate places. [2022-12-12 22:56:00,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 11048 transitions, 286621 flow [2022-12-12 22:56:01,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 10566 transitions, 273741 flow [2022-12-12 22:56:01,104 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 10566 transitions, 273741 flow [2022-12-12 22:56:01,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:56:01,105 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:56:01,105 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:56:01,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 22:56:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:56:01,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 22:56:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:56:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1301720197, now seen corresponding path program 8 times [2022-12-12 22:56:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:56:01,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582304778] [2022-12-12 22:56:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:56:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:56:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:56:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 22:56:02,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:56:02,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582304778] [2022-12-12 22:56:02,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582304778] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:56:02,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930635960] [2022-12-12 22:56:02,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 22:56:02,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:56:02,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:56:02,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:56:02,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 22:56:02,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 22:56:02,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 22:56:02,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-12 22:56:02,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:56:02,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:56:02,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-12 22:56:02,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:56:02,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 256 [2022-12-12 22:56:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 22:56:03,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:56:04,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:56:04,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2022-12-12 22:56:04,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2022-12-12 22:56:04,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2022-12-12 22:56:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 22:56:04,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930635960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:56:04,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:56:04,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 32 [2022-12-12 22:56:04,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196524642] [2022-12-12 22:56:04,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:56:04,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 22:56:04,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:56:04,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 22:56:04,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=873, Unknown=1, NotChecked=0, Total=992 [2022-12-12 22:56:04,565 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 22:56:04,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 10566 transitions, 273741 flow. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:56:04,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:56:04,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 22:56:04,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:00:09,073 INFO L130 PetriNetUnfolder]: 85826/123138 cut-off events. [2022-12-12 23:00:09,073 INFO L131 PetriNetUnfolder]: For 220626/220626 co-relation queries the response was YES. [2022-12-12 23:00:09,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684942 conditions, 123138 events. 85826/123138 cut-off events. For 220626/220626 co-relation queries the response was YES. Maximal size of possible extension queue 4073. Compared 881899 event pairs, 1124 based on Foata normal form. 15/99862 useless extension candidates. Maximal degree in co-relation 886080. Up to 122850 conditions per place. [2022-12-12 23:00:09,801 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 9722 selfloop transitions, 3115 changer transitions 15166/28003 dead transitions. [2022-12-12 23:00:09,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 28003 transitions, 780757 flow [2022-12-12 23:00:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 23:00:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 23:00:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 419 transitions. [2022-12-12 23:00:09,803 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27602108036890644 [2022-12-12 23:00:09,804 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 306 predicate places. [2022-12-12 23:00:09,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 28003 transitions, 780757 flow [2022-12-12 23:00:10,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 12837 transitions, 358107 flow [2022-12-12 23:00:10,446 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 12837 transitions, 358107 flow [2022-12-12 23:00:10,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:00:10,447 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:00:10,447 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:00:10,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 23:00:10,648 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,SelfDestructingSolverStorable12 [2022-12-12 23:00:10,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:00:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:00:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash -618449901, now seen corresponding path program 9 times [2022-12-12 23:00:10,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:00:10,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362752605] [2022-12-12 23:00:10,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:00:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:00:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:00:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 23:00:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:00:11,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362752605] [2022-12-12 23:00:11,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362752605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:00:11,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752190240] [2022-12-12 23:00:11,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 23:00:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:00:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:00:11,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:00:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 23:00:11,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 23:00:11,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:00:12,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-12 23:00:12,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:00:12,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 144 [2022-12-12 23:00:13,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:00:13,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 277 treesize of output 439 [2022-12-12 23:03:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:03:09,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:03:10,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:03:10,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 9 [2022-12-12 23:03:10,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 23:03:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 23:03:10,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752190240] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:03:10,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:03:10,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 11] total 35 [2022-12-12 23:03:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392948724] [2022-12-12 23:03:10,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:03:10,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-12 23:03:10,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:03:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-12 23:03:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-12-12 23:03:10,736 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 23:03:10,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 12837 transitions, 358107 flow. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:03:10,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:03:10,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 23:03:10,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 23:07:44,771 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 23:07:44,773 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 23:07:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-12-12 23:07:44,967 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 23:07:44,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 23:07:45,170 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,SelfDestructingSolverStorable13 [2022-12-12 23:07:45,171 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1471447 conditions, 100696 events (68375/100695 cut-off events. For 263878/263878 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 786690 event pairs, 975 based on Foata normal form. 697/87740 useless extension candidates. Maximal degree in co-relation 660396. Up to 100356 conditions per place.). [2022-12-12 23:07:45,172 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 23:07:45,172 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 23:07:45,173 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 23:07:45,173 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1] [2022-12-12 23:07:45,176 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 23:07:45,176 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 23:07:45,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:07:45 BasicIcfg [2022-12-12 23:07:45,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 23:07:45,178 INFO L158 Benchmark]: Toolchain (without parser) took 795079.23ms. Allocated memory was 198.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 174.2MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2022-12-12 23:07:45,178 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 174.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 23:07:45,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.58ms. Allocated memory is still 198.2MB. Free memory was 174.0MB in the beginning and 159.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 23:07:45,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.26ms. Allocated memory is still 198.2MB. Free memory was 159.4MB in the beginning and 156.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 23:07:45,179 INFO L158 Benchmark]: Boogie Preprocessor took 56.24ms. Allocated memory is still 198.2MB. Free memory was 156.7MB in the beginning and 154.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:07:45,179 INFO L158 Benchmark]: RCFGBuilder took 804.91ms. Allocated memory is still 198.2MB. Free memory was 154.6MB in the beginning and 114.8MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-12-12 23:07:45,180 INFO L158 Benchmark]: TraceAbstraction took 793876.63ms. Allocated memory was 198.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 113.7MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2022-12-12 23:07:45,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 198.2MB. Free memory is still 174.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.58ms. Allocated memory is still 198.2MB. Free memory was 174.0MB in the beginning and 159.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.26ms. Allocated memory is still 198.2MB. Free memory was 159.4MB in the beginning and 156.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.24ms. Allocated memory is still 198.2MB. Free memory was 156.7MB in the beginning and 154.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 804.91ms. Allocated memory is still 198.2MB. Free memory was 154.6MB in the beginning and 114.8MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 793876.63ms. Allocated memory was 198.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 113.7MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5s, 228 PlacesBefore, 35 PlacesAfterwards, 243 TransitionsBefore, 33 TransitionsAfterwards, 2820 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 151 TrivialYvCompositions, 42 ConcurrentYvCompositions, 15 ChoiceCompositions, 210 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 1968, independent unconditional: 0, dependent: 30, dependent conditional: 30, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 0, independent unconditional: 1968, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 0, independent unconditional: 1968, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 0, independent unconditional: 1968, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1666, independent: 1651, independent conditional: 0, independent unconditional: 1651, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1666, independent: 1643, independent conditional: 0, independent unconditional: 1643, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 134, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1998, independent: 317, independent conditional: 0, independent unconditional: 317, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1666, unknown conditional: 0, unknown unconditional: 1666] , Statistics on independence cache: Total cache size (in pairs): 2751, Positive cache size: 2736, Positive conditional cache size: 0, Positive unconditional cache size: 2736, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1471447 conditions, 100696 events (68375/100695 cut-off events. For 263878/263878 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 786690 event pairs, 975 based on Foata normal form. 697/87740 useless extension candidates. Maximal degree in co-relation 660396. Up to 100356 conditions per place.). - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1471447 conditions, 100696 events (68375/100695 cut-off events. For 263878/263878 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 786690 event pairs, 975 based on Foata normal form. 697/87740 useless extension candidates. Maximal degree in co-relation 660396. Up to 100356 conditions per place.). - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1471447 conditions, 100696 events (68375/100695 cut-off events. For 263878/263878 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 786690 event pairs, 975 based on Foata normal form. 697/87740 useless extension candidates. Maximal degree in co-relation 660396. Up to 100356 conditions per place.). - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1471447 conditions, 100696 events (68375/100695 cut-off events. For 263878/263878 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 786690 event pairs, 975 based on Foata normal form. 697/87740 useless extension candidates. Maximal degree in co-relation 660396. Up to 100356 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 277 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.4s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 793.7s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 567.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.7s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 6532 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6532 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 8.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1223 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12874 IncrementalHoareTripleChecker+Invalid, 14098 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1223 mSolverCounterUnsat, 1 mSDtfsCounter, 12874 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1167 GetRequests, 532 SyntacticMatches, 11 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33231 ImplicationChecksByTransitivity, 44.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358107occurred in iteration=13, InterpolantAutomatonStates: 365, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 451706 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 209.9s InterpolantComputationTime, 722 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 963 ConstructedInterpolants, 5 QuantifiedInterpolants, 10082 SizeOfPredicates, 343 NumberOfNonLiveVariables, 3667 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 31 InterpolantComputations, 6 PerfectInterpolantSequences, 145/329 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown