/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-more-buffer-mult.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 23:14:11,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 23:14:11,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 23:14:11,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 23:14:11,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 23:14:11,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 23:14:11,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 23:14:11,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 23:14:11,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 23:14:11,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 23:14:11,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 23:14:11,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 23:14:11,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 23:14:11,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 23:14:11,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 23:14:11,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 23:14:11,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 23:14:11,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 23:14:11,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 23:14:11,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 23:14:11,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 23:14:11,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 23:14:11,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 23:14:11,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 23:14:11,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 23:14:11,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 23:14:11,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 23:14:11,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 23:14:11,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 23:14:11,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 23:14:11,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 23:14:11,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 23:14:11,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 23:14:11,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 23:14:11,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 23:14:11,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 23:14:11,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 23:14:11,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 23:14:11,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 23:14:11,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 23:14:11,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 23:14:11,448 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 23:14:11,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 23:14:11,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 23:14:11,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 23:14:11,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 23:14:11,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 23:14:11,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 23:14:11,485 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 23:14:11,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 23:14:11,485 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 23:14:11,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 23:14:11,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 23:14:11,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 23:14:11,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 23:14:11,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 23:14:11,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 23:14:11,486 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 23:14:11,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 23:14:11,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 23:14:11,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 23:14:11,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 23:14:11,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 23:14:11,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 23:14:11,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 23:14:11,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:14:11,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 23:14:11,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 23:14:11,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 23:14:11,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 23:14:11,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 23:14:11,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 23:14:11,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 23:14:11,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 23:14:11,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 23:14:11,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 23:14:11,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 23:14:11,781 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 23:14:11,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2022-12-12 23:14:13,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 23:14:13,167 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 23:14:13,167 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2022-12-12 23:14:13,173 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e73e3f1/1a80bf5f0db64418ad1b81853dbb2470/FLAGaa138297e [2022-12-12 23:14:13,186 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57e73e3f1/1a80bf5f0db64418ad1b81853dbb2470 [2022-12-12 23:14:13,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 23:14:13,191 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 23:14:13,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 23:14:13,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 23:14:13,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 23:14:13,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6469a3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13, skipping insertion in model container [2022-12-12 23:14:13,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 23:14:13,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 23:14:13,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,421 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-more-buffer-mult.wvr.c[4218,4231] [2022-12-12 23:14:13,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:14:13,438 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 23:14:13,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:14:13,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:14:13,494 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-more-buffer-mult.wvr.c[4218,4231] [2022-12-12 23:14:13,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:14:13,513 INFO L208 MainTranslator]: Completed translation [2022-12-12 23:14:13,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13 WrapperNode [2022-12-12 23:14:13,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 23:14:13,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 23:14:13,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 23:14:13,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 23:14:13,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,583 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 307 [2022-12-12 23:14:13,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 23:14:13,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 23:14:13,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 23:14:13,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 23:14:13,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,636 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 23:14:13,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 23:14:13,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 23:14:13,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 23:14:13,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (1/1) ... [2022-12-12 23:14:13,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:14:13,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:14:13,676 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 23:14:13,702 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 23:14:13,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 23:14:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 23:14:13,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 23:14:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 23:14:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 23:14:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 23:14:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 23:14:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 23:14:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 23:14:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 23:14:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 23:14:13,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 23:14:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 23:14:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 23:14:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 23:14:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 23:14:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 23:14:13,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 23:14:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 23:14:13,727 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 23:14:13,866 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 23:14:13,867 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 23:14:14,228 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 23:14:14,379 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 23:14:14,380 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 23:14:14,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:14:14 BoogieIcfgContainer [2022-12-12 23:14:14,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 23:14:14,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 23:14:14,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 23:14:14,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 23:14:14,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:14:13" (1/3) ... [2022-12-12 23:14:14,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bfffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:14:14, skipping insertion in model container [2022-12-12 23:14:14,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:14:13" (2/3) ... [2022-12-12 23:14:14,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bfffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:14:14, skipping insertion in model container [2022-12-12 23:14:14,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:14:14" (3/3) ... [2022-12-12 23:14:14,389 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-12-12 23:14:14,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 23:14:14,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 23:14:14,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 23:14:14,474 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-12 23:14:14,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 214 transitions, 460 flow [2022-12-12 23:14:14,650 INFO L130 PetriNetUnfolder]: 18/210 cut-off events. [2022-12-12 23:14:14,651 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 23:14:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 210 events. 18/210 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 114 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-12-12 23:14:14,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 214 transitions, 460 flow [2022-12-12 23:14:14,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 198 transitions, 420 flow [2022-12-12 23:14:14,669 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 23:14:14,693 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 198 transitions, 420 flow [2022-12-12 23:14:14,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 198 transitions, 420 flow [2022-12-12 23:14:14,757 INFO L130 PetriNetUnfolder]: 18/198 cut-off events. [2022-12-12 23:14:14,757 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 23:14:14,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 198 events. 18/198 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 113 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-12-12 23:14:14,763 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 198 transitions, 420 flow [2022-12-12 23:14:14,763 INFO L226 LiptonReduction]: Number of co-enabled transitions 2000 [2022-12-12 23:14:23,979 INFO L241 LiptonReduction]: Total number of compositions: 161 [2022-12-12 23:14:23,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 23:14:23,998 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;@7fde753b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 23:14:23,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 23:14:24,005 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2022-12-12 23:14:24,005 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 23:14:24,005 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:24,006 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:24,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash -827498274, now seen corresponding path program 1 times [2022-12-12 23:14:24,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:24,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639897704] [2022-12-12 23:14:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:24,607 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 23:14:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:24,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639897704] [2022-12-12 23:14:24,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639897704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:24,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:24,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 23:14:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794290136] [2022-12-12 23:14:24,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:24,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:14:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:24,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:14:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:14:24,646 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 23:14:24,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 23:14:24,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:24,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 23:14:24,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:25,142 INFO L130 PetriNetUnfolder]: 2606/3582 cut-off events. [2022-12-12 23:14:25,142 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-12-12 23:14:25,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 3582 events. 2606/3582 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 15988 event pairs, 498 based on Foata normal form. 1/2315 useless extension candidates. Maximal degree in co-relation 5886. Up to 2275 conditions per place. [2022-12-12 23:14:25,169 INFO L137 encePairwiseOnDemand]: 33/37 looper letters, 47 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2022-12-12 23:14:25,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 255 flow [2022-12-12 23:14:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:14:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:14:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-12-12 23:14:25,180 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2022-12-12 23:14:25,183 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2022-12-12 23:14:25,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 57 transitions, 255 flow [2022-12-12 23:14:25,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 56 transitions, 248 flow [2022-12-12 23:14:25,200 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 56 transitions, 248 flow [2022-12-12 23:14:25,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 23:14:25,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:25,201 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:25,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 23:14:25,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1672093138, now seen corresponding path program 1 times [2022-12-12 23:14:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:25,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611207852] [2022-12-12 23:14:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:14:25,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:25,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611207852] [2022-12-12 23:14:25,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611207852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:25,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:25,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:14:25,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954605116] [2022-12-12 23:14:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:14:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:14:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:14:25,374 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 37 [2022-12-12 23:14:25,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 56 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:14:25,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:25,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 37 [2022-12-12 23:14:25,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:25,905 INFO L130 PetriNetUnfolder]: 3843/5235 cut-off events. [2022-12-12 23:14:25,905 INFO L131 PetriNetUnfolder]: For 969/991 co-relation queries the response was YES. [2022-12-12 23:14:25,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15232 conditions, 5235 events. 3843/5235 cut-off events. For 969/991 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 24429 event pairs, 458 based on Foata normal form. 0/3645 useless extension candidates. Maximal degree in co-relation 12025. Up to 3576 conditions per place. [2022-12-12 23:14:25,937 INFO L137 encePairwiseOnDemand]: 34/37 looper letters, 88 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2022-12-12 23:14:25,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 95 transitions, 614 flow [2022-12-12 23:14:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:14:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:14:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2022-12-12 23:14:25,938 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2022-12-12 23:14:25,939 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2022-12-12 23:14:25,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 95 transitions, 614 flow [2022-12-12 23:14:25,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 95 transitions, 614 flow [2022-12-12 23:14:25,963 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 95 transitions, 614 flow [2022-12-12 23:14:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:14:25,963 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:25,963 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 23:14:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 23:14:25,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1326937867, now seen corresponding path program 1 times [2022-12-12 23:14:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:25,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887860646] [2022-12-12 23:14:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:14:26,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:26,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887860646] [2022-12-12 23:14:26,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887860646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:26,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:26,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:14:26,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543161201] [2022-12-12 23:14:26,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:26,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:14:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:14:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:14:26,069 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 37 [2022-12-12 23:14:26,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 95 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:14:26,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:26,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 37 [2022-12-12 23:14:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:26,747 INFO L130 PetriNetUnfolder]: 5071/6861 cut-off events. [2022-12-12 23:14:26,747 INFO L131 PetriNetUnfolder]: For 3200/3208 co-relation queries the response was YES. [2022-12-12 23:14:26,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25907 conditions, 6861 events. 5071/6861 cut-off events. For 3200/3208 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31540 event pairs, 479 based on Foata normal form. 0/5109 useless extension candidates. Maximal degree in co-relation 20152. Up to 4575 conditions per place. [2022-12-12 23:14:26,793 INFO L137 encePairwiseOnDemand]: 34/37 looper letters, 136 selfloop transitions, 4 changer transitions 6/151 dead transitions. [2022-12-12 23:14:26,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 151 transitions, 1283 flow [2022-12-12 23:14:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:14:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:14:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2022-12-12 23:14:26,796 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6126126126126126 [2022-12-12 23:14:26,797 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2022-12-12 23:14:26,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 151 transitions, 1283 flow [2022-12-12 23:14:26,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 145 transitions, 1226 flow [2022-12-12 23:14:26,827 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 145 transitions, 1226 flow [2022-12-12 23:14:26,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 23:14:26,828 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:26,828 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:26,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 23:14:26,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash -816930943, now seen corresponding path program 1 times [2022-12-12 23:14:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209416396] [2022-12-12 23:14:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:14:26,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:26,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209416396] [2022-12-12 23:14:27,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209416396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:27,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:27,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 23:14:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886675837] [2022-12-12 23:14:27,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:27,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 23:14:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 23:14:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 23:14:27,002 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 23:14:27,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 145 transitions, 1226 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 23:14:27,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:27,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 23:14:27,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:27,899 INFO L130 PetriNetUnfolder]: 6304/8635 cut-off events. [2022-12-12 23:14:27,899 INFO L131 PetriNetUnfolder]: For 8119/8125 co-relation queries the response was YES. [2022-12-12 23:14:27,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39953 conditions, 8635 events. 6304/8635 cut-off events. For 8119/8125 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 42505 event pairs, 782 based on Foata normal form. 0/6595 useless extension candidates. Maximal degree in co-relation 24720. Up to 5921 conditions per place. [2022-12-12 23:14:27,956 INFO L137 encePairwiseOnDemand]: 33/37 looper letters, 182 selfloop transitions, 3 changer transitions 5/198 dead transitions. [2022-12-12 23:14:27,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 198 transitions, 2075 flow [2022-12-12 23:14:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 23:14:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 23:14:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2022-12-12 23:14:27,961 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2022-12-12 23:14:27,962 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2022-12-12 23:14:27,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 198 transitions, 2075 flow [2022-12-12 23:14:28,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 193 transitions, 2022 flow [2022-12-12 23:14:28,006 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 193 transitions, 2022 flow [2022-12-12 23:14:28,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 23:14:28,006 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:28,007 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:28,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 23:14:28,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -731979670, now seen corresponding path program 1 times [2022-12-12 23:14:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:28,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472057813] [2022-12-12 23:14:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:14:28,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:28,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472057813] [2022-12-12 23:14:28,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472057813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:28,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:28,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 23:14:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963040952] [2022-12-12 23:14:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:28,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 23:14:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 23:14:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 23:14:28,207 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2022-12-12 23:14:28,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 193 transitions, 2022 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 23:14:28,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:28,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2022-12-12 23:14:28,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:29,297 INFO L130 PetriNetUnfolder]: 7291/10063 cut-off events. [2022-12-12 23:14:29,297 INFO L131 PetriNetUnfolder]: For 14498/14506 co-relation queries the response was YES. [2022-12-12 23:14:29,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54865 conditions, 10063 events. 7291/10063 cut-off events. For 14498/14506 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 51527 event pairs, 952 based on Foata normal form. 37/7876 useless extension candidates. Maximal degree in co-relation 29288. Up to 7342 conditions per place. [2022-12-12 23:14:29,365 INFO L137 encePairwiseOnDemand]: 33/37 looper letters, 233 selfloop transitions, 3 changer transitions 14/258 dead transitions. [2022-12-12 23:14:29,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 258 transitions, 3226 flow [2022-12-12 23:14:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 23:14:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 23:14:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2022-12-12 23:14:29,366 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5608108108108109 [2022-12-12 23:14:29,367 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2022-12-12 23:14:29,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 258 transitions, 3226 flow [2022-12-12 23:14:29,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 244 transitions, 3046 flow [2022-12-12 23:14:29,416 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 244 transitions, 3046 flow [2022-12-12 23:14:29,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 23:14:29,417 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:29,417 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:29,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 23:14:29,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2018628376, now seen corresponding path program 1 times [2022-12-12 23:14:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:29,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286628585] [2022-12-12 23:14:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:14:29,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:29,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286628585] [2022-12-12 23:14:29,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286628585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:29,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:29,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 23:14:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046467770] [2022-12-12 23:14:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:14:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:14:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:14:29,910 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:14:29,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 244 transitions, 3046 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:14:29,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:29,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:14:29,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:31,743 INFO L130 PetriNetUnfolder]: 11659/15912 cut-off events. [2022-12-12 23:14:31,743 INFO L131 PetriNetUnfolder]: For 30193/30193 co-relation queries the response was YES. [2022-12-12 23:14:31,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96302 conditions, 15912 events. 11659/15912 cut-off events. For 30193/30193 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 79692 event pairs, 248 based on Foata normal form. 32/13231 useless extension candidates. Maximal degree in co-relation 61830. Up to 11881 conditions per place. [2022-12-12 23:14:31,865 INFO L137 encePairwiseOnDemand]: 30/37 looper letters, 431 selfloop transitions, 28 changer transitions 28/487 dead transitions. [2022-12-12 23:14:31,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 487 transitions, 6912 flow [2022-12-12 23:14:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:14:31,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:14:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2022-12-12 23:14:31,867 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2022-12-12 23:14:31,868 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2022-12-12 23:14:31,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 487 transitions, 6912 flow [2022-12-12 23:14:31,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 459 transitions, 6522 flow [2022-12-12 23:14:31,949 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 459 transitions, 6522 flow [2022-12-12 23:14:31,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:14:31,950 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:31,950 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:31,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 23:14:31,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash -298166708, now seen corresponding path program 2 times [2022-12-12 23:14:31,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:31,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835802877] [2022-12-12 23:14:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:14:32,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:32,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835802877] [2022-12-12 23:14:32,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835802877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:32,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:32,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 23:14:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444739400] [2022-12-12 23:14:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:32,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:14:32,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:14:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:14:32,453 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:14:32,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 459 transitions, 6522 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:14:32,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:32,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:14:32,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:34,629 INFO L130 PetriNetUnfolder]: 12839/17618 cut-off events. [2022-12-12 23:14:34,629 INFO L131 PetriNetUnfolder]: For 36858/36858 co-relation queries the response was YES. [2022-12-12 23:14:34,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125164 conditions, 17618 events. 12839/17618 cut-off events. For 36858/36858 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 90697 event pairs, 234 based on Foata normal form. 36/14769 useless extension candidates. Maximal degree in co-relation 81138. Up to 12887 conditions per place. [2022-12-12 23:14:34,780 INFO L137 encePairwiseOnDemand]: 28/37 looper letters, 741 selfloop transitions, 92 changer transitions 82/915 dead transitions. [2022-12-12 23:14:34,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 915 transitions, 14638 flow [2022-12-12 23:14:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 23:14:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 23:14:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2022-12-12 23:14:34,781 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2022-12-12 23:14:34,782 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2022-12-12 23:14:34,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 915 transitions, 14638 flow [2022-12-12 23:14:34,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 833 transitions, 13320 flow [2022-12-12 23:14:34,890 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 833 transitions, 13320 flow [2022-12-12 23:14:34,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:14:34,891 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:34,891 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 23:14:34,891 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 798331576, now seen corresponding path program 3 times [2022-12-12 23:14:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168899692] [2022-12-12 23:14:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:14:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:35,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168899692] [2022-12-12 23:14:35,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168899692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:35,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:35,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 23:14:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391059964] [2022-12-12 23:14:35,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:14:35,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:14:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:14:35,427 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:14:35,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 833 transitions, 13320 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:14:35,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:35,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:14:35,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:38,262 INFO L130 PetriNetUnfolder]: 13721/19010 cut-off events. [2022-12-12 23:14:38,262 INFO L131 PetriNetUnfolder]: For 41856/41856 co-relation queries the response was YES. [2022-12-12 23:14:38,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154201 conditions, 19010 events. 13721/19010 cut-off events. For 41856/41856 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 99795 event pairs, 943 based on Foata normal form. 36/15969 useless extension candidates. Maximal degree in co-relation 101379. Up to 14752 conditions per place. [2022-12-12 23:14:38,391 INFO L137 encePairwiseOnDemand]: 28/37 looper letters, 1125 selfloop transitions, 158 changer transitions 99/1382 dead transitions. [2022-12-12 23:14:38,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 1382 transitions, 24771 flow [2022-12-12 23:14:38,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 23:14:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 23:14:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2022-12-12 23:14:38,392 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2022-12-12 23:14:38,393 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2022-12-12 23:14:38,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 1382 transitions, 24771 flow [2022-12-12 23:14:38,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 1283 transitions, 23033 flow [2022-12-12 23:14:38,496 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 1283 transitions, 23033 flow [2022-12-12 23:14:38,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:14:38,496 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:38,496 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:38,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 23:14:38,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:38,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:38,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1228077482, now seen corresponding path program 4 times [2022-12-12 23:14:38,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:38,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907194578] [2022-12-12 23:14:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:38,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:14:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907194578] [2022-12-12 23:14:38,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907194578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:38,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:38,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:14:38,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555327035] [2022-12-12 23:14:38,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:14:38,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:14:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-12 23:14:38,875 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:14:38,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 1283 transitions, 23033 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:14:38,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:38,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:14:38,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:43,080 INFO L130 PetriNetUnfolder]: 18549/25878 cut-off events. [2022-12-12 23:14:43,080 INFO L131 PetriNetUnfolder]: For 64043/64043 co-relation queries the response was YES. [2022-12-12 23:14:43,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237931 conditions, 25878 events. 18549/25878 cut-off events. For 64043/64043 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 145434 event pairs, 1437 based on Foata normal form. 200/22209 useless extension candidates. Maximal degree in co-relation 152628. Up to 19689 conditions per place. [2022-12-12 23:14:43,262 INFO L137 encePairwiseOnDemand]: 29/37 looper letters, 1837 selfloop transitions, 187 changer transitions 55/2079 dead transitions. [2022-12-12 23:14:43,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 2079 transitions, 41337 flow [2022-12-12 23:14:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:14:43,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:14:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2022-12-12 23:14:43,264 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5328185328185329 [2022-12-12 23:14:43,266 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2022-12-12 23:14:43,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 2079 transitions, 41337 flow [2022-12-12 23:14:43,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 2024 transitions, 40219 flow [2022-12-12 23:14:43,435 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 2024 transitions, 40219 flow [2022-12-12 23:14:43,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:14:43,435 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:43,435 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:43,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 23:14:43,435 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 586800346, now seen corresponding path program 5 times [2022-12-12 23:14:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:43,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268706798] [2022-12-12 23:14:43,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:43,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:14:43,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:43,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268706798] [2022-12-12 23:14:43,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268706798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:43,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:43,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:14:43,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592386415] [2022-12-12 23:14:43,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:43,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:14:43,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:14:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 23:14:43,833 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:14:43,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 2024 transitions, 40219 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:14:43,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:43,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:14:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:14:50,717 INFO L130 PetriNetUnfolder]: 21282/29779 cut-off events. [2022-12-12 23:14:50,717 INFO L131 PetriNetUnfolder]: For 67543/67543 co-relation queries the response was YES. [2022-12-12 23:14:50,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304149 conditions, 29779 events. 21282/29779 cut-off events. For 67543/67543 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 171381 event pairs, 1629 based on Foata normal form. 126/25216 useless extension candidates. Maximal degree in co-relation 202318. Up to 24432 conditions per place. [2022-12-12 23:14:51,098 INFO L137 encePairwiseOnDemand]: 28/37 looper letters, 2075 selfloop transitions, 258 changer transitions 148/2481 dead transitions. [2022-12-12 23:14:51,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 2481 transitions, 54239 flow [2022-12-12 23:14:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:14:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:14:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2022-12-12 23:14:51,099 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2022-12-12 23:14:51,100 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2022-12-12 23:14:51,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 2481 transitions, 54239 flow [2022-12-12 23:14:51,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 2333 transitions, 50962 flow [2022-12-12 23:14:51,300 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 2333 transitions, 50962 flow [2022-12-12 23:14:51,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:14:51,301 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:14:51,301 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:14:51,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 23:14:51,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:14:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:14:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash 319794882, now seen corresponding path program 6 times [2022-12-12 23:14:51,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:14:51,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993106940] [2022-12-12 23:14:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:14:51,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:14:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:14:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:14:51,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:14:51,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993106940] [2022-12-12 23:14:51,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993106940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:14:51,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:14:51,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 23:14:51,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274603664] [2022-12-12 23:14:51,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:14:51,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:14:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:14:51,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:14:51,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:14:51,624 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:14:51,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 2333 transitions, 50962 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:14:51,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:14:51,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:14:51,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:15:00,796 INFO L130 PetriNetUnfolder]: 25777/35844 cut-off events. [2022-12-12 23:15:00,796 INFO L131 PetriNetUnfolder]: For 87340/87340 co-relation queries the response was YES. [2022-12-12 23:15:00,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402963 conditions, 35844 events. 25777/35844 cut-off events. For 87340/87340 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 209415 event pairs, 1533 based on Foata normal form. 818/30985 useless extension candidates. Maximal degree in co-relation 281548. Up to 30688 conditions per place. [2022-12-12 23:15:01,061 INFO L137 encePairwiseOnDemand]: 29/37 looper letters, 2476 selfloop transitions, 301 changer transitions 262/3039 dead transitions. [2022-12-12 23:15:01,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 3039 transitions, 72176 flow [2022-12-12 23:15:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:15:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:15:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2022-12-12 23:15:01,062 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5345345345345346 [2022-12-12 23:15:01,063 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2022-12-12 23:15:01,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 3039 transitions, 72176 flow [2022-12-12 23:15:01,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 2777 transitions, 65772 flow [2022-12-12 23:15:01,281 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 2777 transitions, 65772 flow [2022-12-12 23:15:01,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:15:01,281 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:15:01,281 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:15:01,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 23:15:01,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:15:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:15:01,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2005498536, now seen corresponding path program 7 times [2022-12-12 23:15:01,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:15:01,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964038983] [2022-12-12 23:15:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:15:01,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:15:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:15:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:15:01,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:15:01,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964038983] [2022-12-12 23:15:01,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964038983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:15:01,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:15:01,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:15:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490788839] [2022-12-12 23:15:01,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:15:01,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:15:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:15:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:15:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 23:15:01,639 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:15:01,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 2777 transitions, 65772 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:15:01,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:15:01,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:15:01,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:15:12,557 INFO L130 PetriNetUnfolder]: 25630/35901 cut-off events. [2022-12-12 23:15:12,557 INFO L131 PetriNetUnfolder]: For 76437/76437 co-relation queries the response was YES. [2022-12-12 23:15:12,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440058 conditions, 35901 events. 25630/35901 cut-off events. For 76437/76437 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 212393 event pairs, 1677 based on Foata normal form. 98/30272 useless extension candidates. Maximal degree in co-relation 332989. Up to 31305 conditions per place. [2022-12-12 23:15:12,859 INFO L137 encePairwiseOnDemand]: 28/37 looper letters, 2827 selfloop transitions, 307 changer transitions 170/3304 dead transitions. [2022-12-12 23:15:12,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 3304 transitions, 84766 flow [2022-12-12 23:15:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:15:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:15:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2022-12-12 23:15:12,860 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2022-12-12 23:15:12,861 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2022-12-12 23:15:12,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 3304 transitions, 84766 flow [2022-12-12 23:15:13,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 3134 transitions, 80405 flow [2022-12-12 23:15:13,104 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 3134 transitions, 80405 flow [2022-12-12 23:15:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 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 23:15:13,104 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:15:13,104 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:15:13,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 23:15:13,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:15:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:15:13,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1358064692, now seen corresponding path program 8 times [2022-12-12 23:15:13,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:15:13,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199471672] [2022-12-12 23:15:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:15:13,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:15:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:15:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:15:13,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:15:13,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199471672] [2022-12-12 23:15:13,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199471672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:15:13,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:15:13,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 23:15:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945785635] [2022-12-12 23:15:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:15:13,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:15:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:15:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:15:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:15:13,626 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:15:13,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 3134 transitions, 80405 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:15:13,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:15:13,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:15:13,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:15:25,204 INFO L130 PetriNetUnfolder]: 24305/33838 cut-off events. [2022-12-12 23:15:25,204 INFO L131 PetriNetUnfolder]: For 73690/73690 co-relation queries the response was YES. [2022-12-12 23:15:25,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448927 conditions, 33838 events. 24305/33838 cut-off events. For 73690/73690 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 195458 event pairs, 1615 based on Foata normal form. 114/28589 useless extension candidates. Maximal degree in co-relation 345913. Up to 29781 conditions per place. [2022-12-12 23:15:25,494 INFO L137 encePairwiseOnDemand]: 28/37 looper letters, 2845 selfloop transitions, 259 changer transitions 0/3104 dead transitions. [2022-12-12 23:15:25,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 3104 transitions, 85770 flow [2022-12-12 23:15:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:15:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:15:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2022-12-12 23:15:25,495 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2022-12-12 23:15:25,495 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2022-12-12 23:15:25,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 3104 transitions, 85770 flow [2022-12-12 23:15:25,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 3104 transitions, 85770 flow [2022-12-12 23:15:25,747 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 3104 transitions, 85770 flow [2022-12-12 23:15:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:15:25,747 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:15:25,747 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:15:25,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 23:15:25,747 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:15:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:15:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 187651578, now seen corresponding path program 9 times [2022-12-12 23:15:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:15:25,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966238669] [2022-12-12 23:15:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:15:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:15:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:15:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:15:26,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:15:26,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966238669] [2022-12-12 23:15:26,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966238669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:15:26,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759139568] [2022-12-12 23:15:26,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 23:15:26,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:15:26,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:15:26,211 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 23:15:26,260 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 23:15:26,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 23:15:26,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:15:26,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 23:15:26,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:15:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:15:26,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 23:15:26,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759139568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:15:26,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 23:15:26,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-12-12 23:15:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434928587] [2022-12-12 23:15:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:15:26,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:15:26,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:15:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:15:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-12 23:15:26,727 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:15:26,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 3104 transitions, 85770 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:15:26,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:15:26,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:15:26,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:15:39,420 INFO L130 PetriNetUnfolder]: 25941/36048 cut-off events. [2022-12-12 23:15:39,420 INFO L131 PetriNetUnfolder]: For 76636/76636 co-relation queries the response was YES. [2022-12-12 23:15:39,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514582 conditions, 36048 events. 25941/36048 cut-off events. For 76636/76636 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 209430 event pairs, 1571 based on Foata normal form. 140/30629 useless extension candidates. Maximal degree in co-relation 399527. Up to 31572 conditions per place. [2022-12-12 23:15:39,731 INFO L137 encePairwiseOnDemand]: 26/37 looper letters, 3201 selfloop transitions, 302 changer transitions 45/3548 dead transitions. [2022-12-12 23:15:39,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 3548 transitions, 104975 flow [2022-12-12 23:15:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 23:15:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 23:15:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2022-12-12 23:15:39,733 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2022-12-12 23:15:39,733 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 73 predicate places. [2022-12-12 23:15:39,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 3548 transitions, 104975 flow [2022-12-12 23:15:40,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 3503 transitions, 103604 flow [2022-12-12 23:15:40,003 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 3503 transitions, 103604 flow [2022-12-12 23:15:40,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:15:40,003 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:15:40,004 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:15:40,013 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 23:15:40,204 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,SelfDestructingSolverStorable13 [2022-12-12 23:15:40,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:15:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:15:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash -655956942, now seen corresponding path program 10 times [2022-12-12 23:15:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:15:40,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440925817] [2022-12-12 23:15:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:15:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:15:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:15:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:15:40,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:15:40,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440925817] [2022-12-12 23:15:40,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440925817] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:15:40,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817389289] [2022-12-12 23:15:40,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 23:15:40,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:15:40,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:15:40,548 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 23:15:40,580 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 23:15:40,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 23:15:40,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:15:40,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 23:15:40,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:15:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:15:41,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:15:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:15:41,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817389289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:15:41,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:15:41,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2022-12-12 23:15:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23351936] [2022-12-12 23:15:41,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:15:41,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 23:15:41,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:15:41,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 23:15:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-12-12 23:15:41,327 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:15:41,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 3503 transitions, 103604 flow. Second operand has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 20 states have internal predecessors, (80), 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 23:15:41,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:15:41,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:15:41,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:16:37,418 INFO L130 PetriNetUnfolder]: 82992/114859 cut-off events. [2022-12-12 23:16:37,419 INFO L131 PetriNetUnfolder]: For 142818/142818 co-relation queries the response was YES. [2022-12-12 23:16:37,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758092 conditions, 114859 events. 82992/114859 cut-off events. For 142818/142818 co-relation queries the response was YES. Maximal size of possible extension queue 4286. Compared 767156 event pairs, 1760 based on Foata normal form. 1738/98022 useless extension candidates. Maximal degree in co-relation 1437883. Up to 108421 conditions per place. [2022-12-12 23:16:38,788 INFO L137 encePairwiseOnDemand]: 21/37 looper letters, 10134 selfloop transitions, 5643 changer transitions 1248/17025 dead transitions. [2022-12-12 23:16:38,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 17025 transitions, 535829 flow [2022-12-12 23:16:38,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-12 23:16:38,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2022-12-12 23:16:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 1400 transitions. [2022-12-12 23:16:38,795 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.39829302987197723 [2022-12-12 23:16:38,795 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2022-12-12 23:16:38,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 17025 transitions, 535829 flow [2022-12-12 23:16:39,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 15777 transitions, 495332 flow [2022-12-12 23:16:39,986 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 15777 transitions, 495332 flow [2022-12-12 23:16:39,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 20 states have internal predecessors, (80), 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 23:16:39,986 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:16:39,987 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:16:39,993 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 23:16:40,192 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,SelfDestructingSolverStorable14 [2022-12-12 23:16:40,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:16:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:16:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1468561324, now seen corresponding path program 11 times [2022-12-12 23:16:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:16:40,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950405339] [2022-12-12 23:16:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:16:40,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:16:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:16:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:16:40,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:16:40,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950405339] [2022-12-12 23:16:40,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950405339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:16:40,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:16:40,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 23:16:40,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834085667] [2022-12-12 23:16:40,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:16:40,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:16:40,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:16:40,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:16:40,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:16:40,530 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:16:40,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 15777 transitions, 495332 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:16:40,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:16:40,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:16:40,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:23:14,563 INFO L130 PetriNetUnfolder]: 90931/125570 cut-off events. [2022-12-12 23:23:14,563 INFO L131 PetriNetUnfolder]: For 149761/149761 co-relation queries the response was YES. [2022-12-12 23:23:14,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047273 conditions, 125570 events. 90931/125570 cut-off events. For 149761/149761 co-relation queries the response was YES. Maximal size of possible extension queue 4745. Compared 845367 event pairs, 1664 based on Foata normal form. 78/105843 useless extension candidates. Maximal degree in co-relation 1646262. Up to 119707 conditions per place. [2022-12-12 23:23:15,983 INFO L137 encePairwiseOnDemand]: 28/37 looper letters, 16401 selfloop transitions, 1554 changer transitions 105/18060 dead transitions. [2022-12-12 23:23:15,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 18060 transitions, 604128 flow [2022-12-12 23:23:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 23:23:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 23:23:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2022-12-12 23:23:15,985 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2022-12-12 23:23:15,985 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 169 predicate places. [2022-12-12 23:23:15,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 18060 transitions, 604128 flow [2022-12-12 23:23:17,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 17955 transitions, 600581 flow [2022-12-12 23:23:17,501 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 17955 transitions, 600581 flow [2022-12-12 23:23:17,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:23:17,502 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:23:17,502 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:23:17,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 23:23:17,502 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-12 23:23:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:23:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1899372610, now seen corresponding path program 12 times [2022-12-12 23:23:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:23:17,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420146625] [2022-12-12 23:23:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:23:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:23:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:23:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 23:23:18,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:23:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420146625] [2022-12-12 23:23:18,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420146625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:23:18,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:23:18,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 23:23:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964233051] [2022-12-12 23:23:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:23:18,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 23:23:18,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:23:18,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 23:23:18,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 23:23:18,090 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 37 [2022-12-12 23:23:18,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 17955 transitions, 600581 flow. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 23:23:18,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:23:18,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 37 [2022-12-12 23:23:18,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 23:27:51,228 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 23:27:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:27:51,465 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 23:27:51,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 23:27:51,466 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 0/37 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1410497 conditions, 81604 events (60513/81603 cut-off events. For 121274/121274 co-relation queries the response was YES. Maximal size of possible extension queue 5450. Compared 545294 event pairs, 1061 based on Foata normal form. 235/73713 useless extension candidates. Maximal degree in co-relation 1104929. Up to 75626 conditions per place.). [2022-12-12 23:27:51,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-12 23:27:51,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-12 23:27:51,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-12 23:27:51,467 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-12 23:27:51,468 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1] [2022-12-12 23:27:51,470 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 23:27:51,470 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 23:27:51,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:27:51 BasicIcfg [2022-12-12 23:27:51,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 23:27:51,473 INFO L158 Benchmark]: Toolchain (without parser) took 818281.91ms. Allocated memory was 187.7MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 146.8MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. [2022-12-12 23:27:51,473 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 23:27:51,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.59ms. Allocated memory is still 187.7MB. Free memory was 146.8MB in the beginning and 131.0MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-12 23:27:51,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.73ms. Allocated memory is still 187.7MB. Free memory was 131.0MB in the beginning and 128.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:27:51,474 INFO L158 Benchmark]: Boogie Preprocessor took 55.93ms. Allocated memory is still 187.7MB. Free memory was 128.4MB in the beginning and 126.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:27:51,474 INFO L158 Benchmark]: RCFGBuilder took 741.34ms. Allocated memory is still 187.7MB. Free memory was 126.3MB in the beginning and 83.3MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-12-12 23:27:51,475 INFO L158 Benchmark]: TraceAbstraction took 817088.58ms. Allocated memory was 187.7MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 82.3MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. [2022-12-12 23:27:51,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 321.59ms. Allocated memory is still 187.7MB. Free memory was 146.8MB in the beginning and 131.0MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.73ms. Allocated memory is still 187.7MB. Free memory was 131.0MB in the beginning and 128.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.93ms. Allocated memory is still 187.7MB. Free memory was 128.4MB in the beginning and 126.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 741.34ms. Allocated memory is still 187.7MB. Free memory was 126.3MB in the beginning and 83.3MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * TraceAbstraction took 817088.58ms. Allocated memory was 187.7MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 82.3MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 4.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2s, 193 PlacesBefore, 44 PlacesAfterwards, 198 TransitionsBefore, 37 TransitionsAfterwards, 2000 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 118 TrivialYvCompositions, 31 ConcurrentYvCompositions, 12 ChoiceCompositions, 161 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1113, independent: 1087, independent conditional: 1087, independent unconditional: 0, dependent: 26, dependent conditional: 26, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1113, independent: 1087, independent conditional: 0, independent unconditional: 1087, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1113, independent: 1087, independent conditional: 0, independent unconditional: 1087, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1113, independent: 1087, independent conditional: 0, independent unconditional: 1087, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 994, independent: 979, independent conditional: 0, independent unconditional: 979, 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: 994, independent: 977, independent conditional: 0, independent unconditional: 977, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 75, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1113, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 994, unknown conditional: 0, unknown unconditional: 994] , Statistics on independence cache: Total cache size (in pairs): 1454, Positive cache size: 1439, Positive conditional cache size: 0, Positive unconditional cache size: 1439, 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: 152]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 0/37 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1410497 conditions, 81604 events (60513/81603 cut-off events. For 121274/121274 co-relation queries the response was YES. Maximal size of possible extension queue 5450. Compared 545294 event pairs, 1061 based on Foata normal form. 235/73713 useless extension candidates. Maximal degree in co-relation 1104929. Up to 75626 conditions per place.). - TimeoutResultAtElement [Line: 142]: 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 (7states, 0/37 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1410497 conditions, 81604 events (60513/81603 cut-off events. For 121274/121274 co-relation queries the response was YES. Maximal size of possible extension queue 5450. Compared 545294 event pairs, 1061 based on Foata normal form. 235/73713 useless extension candidates. Maximal degree in co-relation 1104929. Up to 75626 conditions per place.). - TimeoutResultAtElement [Line: 143]: 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 (7states, 0/37 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1410497 conditions, 81604 events (60513/81603 cut-off events. For 121274/121274 co-relation queries the response was YES. Maximal size of possible extension queue 5450. Compared 545294 event pairs, 1061 based on Foata normal form. 235/73713 useless extension candidates. Maximal degree in co-relation 1104929. Up to 75626 conditions per place.). - TimeoutResultAtElement [Line: 144]: 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 (7states, 0/37 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1410497 conditions, 81604 events (60513/81603 cut-off events. For 121274/121274 co-relation queries the response was YES. Maximal size of possible extension queue 5450. Compared 545294 event pairs, 1061 based on Foata normal form. 235/73713 useless extension candidates. Maximal degree in co-relation 1104929. Up to 75626 conditions per place.). - TimeoutResultAtElement [Line: 145]: 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 (7states, 0/37 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1410497 conditions, 81604 events (60513/81603 cut-off events. For 121274/121274 co-relation queries the response was YES. Maximal size of possible extension queue 5450. Compared 545294 event pairs, 1061 based on Foata normal form. 235/73713 useless extension candidates. Maximal degree in co-relation 1104929. Up to 75626 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 231 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 4.5s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 817.0s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 794.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2329 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2329 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7623 IncrementalHoareTripleChecker+Invalid, 7850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 227 mSolverCounterUnsat, 4 mSDtfsCounter, 7623 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3639 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=600581occurred in iteration=16, InterpolantAutomatonStates: 193, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 64318 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 4129 SizeOfPredicates, 20 NumberOfNonLiveVariables, 704 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 47/51 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