/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/parallel-parallel-sum-1-dsl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:47:00,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:47:00,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:47:00,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 22:47:00,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 22:47:00,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 22:47:00,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 22:47:00,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 22:47:00,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 22:47:00,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 22:47:00,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 22:47:00,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 22:47:00,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:47:00,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:47:00,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:47:00,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:47:00,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:47:00,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:47:00,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:47:00,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:47:00,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:47:00,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:47:00,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:47:00,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:47:00,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 22:47:00,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 22:47:00,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 22:47:00,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 22:47:00,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 22:47:00,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 22:47:00,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 22:47:00,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 22:47:00,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 22:47:00,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 22:47:00,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 22:47:00,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 22:47:00,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 22:47:00,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 22:47:00,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:47:00,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:47:00,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:47:00,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 22:47:00,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:47:00,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:47:00,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:47:00,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:47:00,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:47:00,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:47:00,692 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:47:00,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:47:00,692 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:47:00,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:47:00,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:47:00,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:47:00,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:47:00,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:47:00,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:47:00,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:47:00,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:47:00,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:47:00,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:47:00,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:47:00,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:47:00,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:47:00,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:47:00,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:47:00,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:47:00,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:47:00,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:47:00,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:47:00,932 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:47:00,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-12 22:47:01,820 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:47:02,022 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:47:02,023 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-12 22:47:02,048 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0aee125e/7e3b099b49624575bd947571de7acf02/FLAG279b6be09 [2022-12-12 22:47:02,064 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0aee125e/7e3b099b49624575bd947571de7acf02 [2022-12-12 22:47:02,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:47:02,068 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:47:02,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:47:02,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:47:02,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:47:02,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69609434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02, skipping insertion in model container [2022-12-12 22:47:02,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:47:02,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:47:02,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,225 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,240 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/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-12 22:47:02,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:47:02,258 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:47:02,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 22:47:02,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 22:47:02,299 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/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-12 22:47:02,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:47:02,315 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:47:02,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02 WrapperNode [2022-12-12 22:47:02,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:47:02,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:47:02,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:47:02,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:47:02,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,379 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-12-12 22:47:02,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:47:02,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:47:02,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:47:02,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:47:02,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,413 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:47:02,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:47:02,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:47:02,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:47:02,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (1/1) ... [2022-12-12 22:47:02,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:47:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:47:02,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 22:47:02,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 22:47:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:47:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:47:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:47:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 22:47:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 22:47:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 22:47:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-12 22:47:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-12 22:47:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-12 22:47:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 22:47:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 22:47:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 22:47:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:47:02,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:47:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:47:02,586 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 22:47:02,664 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:47:02,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:47:03,026 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:47:03,161 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:47:03,162 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-12 22:47:03,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:47:03 BoogieIcfgContainer [2022-12-12 22:47:03,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:47:03,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:47:03,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:47:03,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:47:03,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:47:02" (1/3) ... [2022-12-12 22:47:03,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629f7bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:47:03, skipping insertion in model container [2022-12-12 22:47:03,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:47:02" (2/3) ... [2022-12-12 22:47:03,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629f7bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:47:03, skipping insertion in model container [2022-12-12 22:47:03,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:47:03" (3/3) ... [2022-12-12 22:47:03,172 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-12-12 22:47:03,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:47:03,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 22:47:03,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:47:03,292 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-12 22:47:03,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 248 transitions, 568 flow [2022-12-12 22:47:03,419 INFO L130 PetriNetUnfolder]: 18/220 cut-off events. [2022-12-12 22:47:03,419 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 22:47:03,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 220 events. 18/220 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2022-12-12 22:47:03,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 248 transitions, 568 flow [2022-12-12 22:47:03,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 212 transitions, 472 flow [2022-12-12 22:47:03,438 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:47:03,460 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 212 transitions, 472 flow [2022-12-12 22:47:03,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 212 transitions, 472 flow [2022-12-12 22:47:03,503 INFO L130 PetriNetUnfolder]: 18/212 cut-off events. [2022-12-12 22:47:03,503 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 22:47:03,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 212 events. 18/212 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 280 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2022-12-12 22:47:03,510 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 212 transitions, 472 flow [2022-12-12 22:47:03,510 INFO L226 LiptonReduction]: Number of co-enabled transitions 7312 [2022-12-12 22:47:09,063 INFO L241 LiptonReduction]: Total number of compositions: 151 [2022-12-12 22:47:09,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:47:09,085 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;@391dd595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:47:09,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-12 22:47:09,096 INFO L130 PetriNetUnfolder]: 9/60 cut-off events. [2022-12-12 22:47:09,096 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 22:47:09,097 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:09,097 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:09,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash -482795550, now seen corresponding path program 1 times [2022-12-12 22:47:09,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:09,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292827494] [2022-12-12 22:47:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:09,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:09,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:09,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292827494] [2022-12-12 22:47:09,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292827494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:47:09,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:47:09,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:47:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316108218] [2022-12-12 22:47:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:47:09,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:47:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:09,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:47:09,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:47:09,506 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:09,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:09,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:09,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:09,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:12,172 INFO L130 PetriNetUnfolder]: 28944/36855 cut-off events. [2022-12-12 22:47:12,172 INFO L131 PetriNetUnfolder]: For 4966/4966 co-relation queries the response was YES. [2022-12-12 22:47:12,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79913 conditions, 36855 events. 28944/36855 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 169829 event pairs, 12531 based on Foata normal form. 1/28136 useless extension candidates. Maximal degree in co-relation 78348. Up to 14539 conditions per place. [2022-12-12 22:47:12,342 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 115 selfloop transitions, 8 changer transitions 1/138 dead transitions. [2022-12-12 22:47:12,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 138 transitions, 653 flow [2022-12-12 22:47:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:47:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:47:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2022-12-12 22:47:12,351 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7418032786885246 [2022-12-12 22:47:12,353 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2022-12-12 22:47:12,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 138 transitions, 653 flow [2022-12-12 22:47:12,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 137 transitions, 646 flow [2022-12-12 22:47:12,526 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 137 transitions, 646 flow [2022-12-12 22:47:12,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:12,526 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:12,526 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:12,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:47:12,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash -292667862, now seen corresponding path program 2 times [2022-12-12 22:47:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:12,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054151341] [2022-12-12 22:47:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:12,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054151341] [2022-12-12 22:47:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054151341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:47:12,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:47:12,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:47:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264503670] [2022-12-12 22:47:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:47:12,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:47:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:47:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:47:12,658 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:12,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 137 transitions, 646 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:12,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:12,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:12,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:16,632 INFO L130 PetriNetUnfolder]: 47660/60486 cut-off events. [2022-12-12 22:47:16,632 INFO L131 PetriNetUnfolder]: For 10079/11529 co-relation queries the response was YES. [2022-12-12 22:47:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190765 conditions, 60486 events. 47660/60486 cut-off events. For 10079/11529 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 293928 event pairs, 15536 based on Foata normal form. 10/46181 useless extension candidates. Maximal degree in co-relation 187049. Up to 27373 conditions per place. [2022-12-12 22:47:16,927 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 188 selfloop transitions, 11 changer transitions 1/214 dead transitions. [2022-12-12 22:47:16,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 214 transitions, 1432 flow [2022-12-12 22:47:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:47:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:47:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2022-12-12 22:47:16,932 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-12-12 22:47:16,933 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 6 predicate places. [2022-12-12 22:47:16,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 214 transitions, 1432 flow [2022-12-12 22:47:17,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 213 transitions, 1423 flow [2022-12-12 22:47:17,144 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 213 transitions, 1423 flow [2022-12-12 22:47:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:17,144 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:17,144 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:17,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 22:47:17,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:17,147 INFO L85 PathProgramCache]: Analyzing trace with hash 172734857, now seen corresponding path program 1 times [2022-12-12 22:47:17,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:17,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275976779] [2022-12-12 22:47:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:17,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:17,350 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 22:47:17,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:17,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275976779] [2022-12-12 22:47:17,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275976779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:47:17,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:47:17,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 22:47:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492779000] [2022-12-12 22:47:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:47:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:47:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:17,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:47:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 22:47:17,356 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:17,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 213 transitions, 1423 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:17,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:17,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:17,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:22,972 INFO L130 PetriNetUnfolder]: 60023/77943 cut-off events. [2022-12-12 22:47:22,972 INFO L131 PetriNetUnfolder]: For 18521/22936 co-relation queries the response was YES. [2022-12-12 22:47:23,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323022 conditions, 77943 events. 60023/77943 cut-off events. For 18521/22936 co-relation queries the response was YES. Maximal size of possible extension queue 1846. Compared 419234 event pairs, 10249 based on Foata normal form. 13/62361 useless extension candidates. Maximal degree in co-relation 237403. Up to 35388 conditions per place. [2022-12-12 22:47:23,361 INFO L137 encePairwiseOnDemand]: 53/61 looper letters, 447 selfloop transitions, 15 changer transitions 12/488 dead transitions. [2022-12-12 22:47:23,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 488 transitions, 4285 flow [2022-12-12 22:47:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 22:47:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 22:47:23,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2022-12-12 22:47:23,363 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6174863387978142 [2022-12-12 22:47:23,364 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 11 predicate places. [2022-12-12 22:47:23,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 488 transitions, 4285 flow [2022-12-12 22:47:23,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 476 transitions, 4171 flow [2022-12-12 22:47:23,624 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 476 transitions, 4171 flow [2022-12-12 22:47:23,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:23,624 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:23,625 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:23,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 22:47:23,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:23,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1146254383, now seen corresponding path program 1 times [2022-12-12 22:47:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:23,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529477160] [2022-12-12 22:47:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:23,852 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 22:47:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:23,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529477160] [2022-12-12 22:47:23,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529477160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:47:23,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:47:23,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 22:47:23,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863624465] [2022-12-12 22:47:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:47:23,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:47:23,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:23,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:47:23,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 22:47:23,855 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:23,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 476 transitions, 4171 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:23,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:23,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:23,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:29,076 INFO L130 PetriNetUnfolder]: 49515/64339 cut-off events. [2022-12-12 22:47:29,076 INFO L131 PetriNetUnfolder]: For 19042/24090 co-relation queries the response was YES. [2022-12-12 22:47:29,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329448 conditions, 64339 events. 49515/64339 cut-off events. For 19042/24090 co-relation queries the response was YES. Maximal size of possible extension queue 1560. Compared 339250 event pairs, 7910 based on Foata normal form. 0/51875 useless extension candidates. Maximal degree in co-relation 293893. Up to 57641 conditions per place. [2022-12-12 22:47:29,458 INFO L137 encePairwiseOnDemand]: 55/61 looper letters, 327 selfloop transitions, 2 changer transitions 87/430 dead transitions. [2022-12-12 22:47:29,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 430 transitions, 4602 flow [2022-12-12 22:47:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 22:47:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 22:47:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2022-12-12 22:47:29,460 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5508196721311476 [2022-12-12 22:47:29,460 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 15 predicate places. [2022-12-12 22:47:29,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 430 transitions, 4602 flow [2022-12-12 22:47:29,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 343 transitions, 3624 flow [2022-12-12 22:47:29,731 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 343 transitions, 3624 flow [2022-12-12 22:47:29,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:29,732 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:29,732 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:29,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 22:47:29,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2026215194, now seen corresponding path program 1 times [2022-12-12 22:47:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:29,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465007948] [2022-12-12 22:47:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:29,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:29,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:29,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465007948] [2022-12-12 22:47:29,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465007948] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:47:29,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406615149] [2022-12-12 22:47:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:29,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:29,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:47:29,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:47:29,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 22:47:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:30,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 22:47:30,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:47:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:30,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:47:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:30,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406615149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:47:30,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:47:30,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 22:47:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609924665] [2022-12-12 22:47:30,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:47:30,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 22:47:30,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 22:47:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-12 22:47:30,194 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:30,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 343 transitions, 3624 flow. Second operand has 12 states, 12 states have (on average 18.25) internal successors, (219), 12 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:30,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:30,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:30,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:36,714 INFO L130 PetriNetUnfolder]: 60023/77452 cut-off events. [2022-12-12 22:47:36,714 INFO L131 PetriNetUnfolder]: For 26287/35952 co-relation queries the response was YES. [2022-12-12 22:47:36,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475604 conditions, 77452 events. 60023/77452 cut-off events. For 26287/35952 co-relation queries the response was YES. Maximal size of possible extension queue 1857. Compared 411535 event pairs, 8788 based on Foata normal form. 229/62296 useless extension candidates. Maximal degree in co-relation 350237. Up to 76534 conditions per place. [2022-12-12 22:47:37,172 INFO L137 encePairwiseOnDemand]: 53/61 looper letters, 510 selfloop transitions, 16 changer transitions 20/560 dead transitions. [2022-12-12 22:47:37,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 560 transitions, 7108 flow [2022-12-12 22:47:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 22:47:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 22:47:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 239 transitions. [2022-12-12 22:47:37,188 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5597189695550351 [2022-12-12 22:47:37,189 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 17 predicate places. [2022-12-12 22:47:37,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 560 transitions, 7108 flow [2022-12-12 22:47:37,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 540 transitions, 6838 flow [2022-12-12 22:47:37,529 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 540 transitions, 6838 flow [2022-12-12 22:47:37,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.25) internal successors, (219), 12 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:37,529 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:37,530 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:37,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 22:47:37,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:37,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1144829817, now seen corresponding path program 1 times [2022-12-12 22:47:37,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:37,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88887803] [2022-12-12 22:47:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:37,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:37,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:37,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88887803] [2022-12-12 22:47:37,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88887803] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:47:37,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568483521] [2022-12-12 22:47:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:37,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:37,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:47:37,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:47:37,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 22:47:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:38,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 22:47:38,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:47:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:38,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:47:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:38,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568483521] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:47:38,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:47:38,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 22:47:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192372955] [2022-12-12 22:47:38,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:47:38,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 22:47:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:38,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 22:47:38,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-12 22:47:38,176 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:38,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 540 transitions, 6838 flow. Second operand has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:38,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:38,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:38,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:44,331 INFO L130 PetriNetUnfolder]: 47415/62020 cut-off events. [2022-12-12 22:47:44,331 INFO L131 PetriNetUnfolder]: For 30566/39684 co-relation queries the response was YES. [2022-12-12 22:47:44,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440755 conditions, 62020 events. 47415/62020 cut-off events. For 30566/39684 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 329023 event pairs, 2934 based on Foata normal form. 59/51826 useless extension candidates. Maximal degree in co-relation 392763. Up to 61010 conditions per place. [2022-12-12 22:47:44,679 INFO L137 encePairwiseOnDemand]: 53/61 looper letters, 517 selfloop transitions, 23 changer transitions 126/680 dead transitions. [2022-12-12 22:47:44,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 680 transitions, 9946 flow [2022-12-12 22:47:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 22:47:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 22:47:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2022-12-12 22:47:44,681 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.531615925058548 [2022-12-12 22:47:44,681 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 23 predicate places. [2022-12-12 22:47:44,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 680 transitions, 9946 flow [2022-12-12 22:47:44,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 554 transitions, 8038 flow [2022-12-12 22:47:44,943 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 554 transitions, 8038 flow [2022-12-12 22:47:44,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:44,943 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:44,943 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:44,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 22:47:45,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 22:47:45,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1563984908, now seen corresponding path program 1 times [2022-12-12 22:47:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:45,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46533952] [2022-12-12 22:47:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46533952] [2022-12-12 22:47:45,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46533952] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:47:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655942180] [2022-12-12 22:47:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:45,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:47:45,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:47:45,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 22:47:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:45,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 22:47:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:47:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:45,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:47:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:45,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655942180] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 22:47:45,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 22:47:45,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-12-12 22:47:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762601922] [2022-12-12 22:47:45,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:47:45,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 22:47:45,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:45,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 22:47:45,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-12 22:47:45,695 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:45,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 554 transitions, 8038 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:45,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:45,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:45,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:49,693 INFO L130 PetriNetUnfolder]: 32966/42317 cut-off events. [2022-12-12 22:47:49,693 INFO L131 PetriNetUnfolder]: For 23116/37622 co-relation queries the response was YES. [2022-12-12 22:47:49,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343104 conditions, 42317 events. 32966/42317 cut-off events. For 23116/37622 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 203266 event pairs, 1758 based on Foata normal form. 55/35694 useless extension candidates. Maximal degree in co-relation 336385. Up to 41860 conditions per place. [2022-12-12 22:47:49,969 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 585 selfloop transitions, 19 changer transitions 0/618 dead transitions. [2022-12-12 22:47:49,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 618 transitions, 10172 flow [2022-12-12 22:47:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 22:47:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 22:47:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2022-12-12 22:47:49,970 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43989071038251365 [2022-12-12 22:47:49,971 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 24 predicate places. [2022-12-12 22:47:49,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 618 transitions, 10172 flow [2022-12-12 22:47:50,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 618 transitions, 10172 flow [2022-12-12 22:47:50,327 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 618 transitions, 10172 flow [2022-12-12 22:47:50,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:50,327 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:50,327 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:50,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 22:47:50,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:50,533 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1167068215, now seen corresponding path program 1 times [2022-12-12 22:47:50,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:50,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301955448] [2022-12-12 22:47:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:50,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:50,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301955448] [2022-12-12 22:47:50,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301955448] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:47:50,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216656895] [2022-12-12 22:47:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:50,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:50,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:47:50,725 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:47:50,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 22:47:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:50,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 22:47:50,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:47:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:50,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:47:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:47:51,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216656895] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 22:47:51,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 22:47:51,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-12-12 22:47:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189380107] [2022-12-12 22:47:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:47:51,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 22:47:51,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 22:47:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-12 22:47:51,011 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-12 22:47:51,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 618 transitions, 10172 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:51,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:51,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-12 22:47:51,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:47:54,466 INFO L130 PetriNetUnfolder]: 25016/31871 cut-off events. [2022-12-12 22:47:54,466 INFO L131 PetriNetUnfolder]: For 19248/29855 co-relation queries the response was YES. [2022-12-12 22:47:54,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290000 conditions, 31871 events. 25016/31871 cut-off events. For 19248/29855 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 143635 event pairs, 1050 based on Foata normal form. 41/27369 useless extension candidates. Maximal degree in co-relation 286789. Up to 31574 conditions per place. [2022-12-12 22:47:54,683 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 614 selfloop transitions, 24 changer transitions 0/652 dead transitions. [2022-12-12 22:47:54,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 652 transitions, 11968 flow [2022-12-12 22:47:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 22:47:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 22:47:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2022-12-12 22:47:54,684 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43989071038251365 [2022-12-12 22:47:54,684 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 29 predicate places. [2022-12-12 22:47:54,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 652 transitions, 11968 flow [2022-12-12 22:47:54,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 652 transitions, 11968 flow [2022-12-12 22:47:54,865 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 652 transitions, 11968 flow [2022-12-12 22:47:54,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:54,865 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:47:54,865 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:47:54,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 22:47:55,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:55,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:47:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:47:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2107558746, now seen corresponding path program 1 times [2022-12-12 22:47:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:47:55,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873227089] [2022-12-12 22:47:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:55,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:47:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:47:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:47:56,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873227089] [2022-12-12 22:47:56,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873227089] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:47:56,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104242068] [2022-12-12 22:47:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:47:56,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:47:56,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:47:56,084 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:47:56,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 22:47:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:47:56,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-12 22:47:56,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:47:56,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:47:56,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-12 22:47:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:47:56,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-12 22:47:56,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 22:47:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:47:56,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:47:56,597 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 (Array Int Int))) (= (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_496) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) c_~s_2~0)) is different from false [2022-12-12 22:47:56,604 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_496) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) c_~s_2~0)) is different from false [2022-12-12 22:47:56,962 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_thread4Thread1of1ForFork0_~#t5~0.base_79| Int)) (or (forall ((v_ArrVal_496 (Array Int Int))) (= (select (select (store |c_#memory_int| |v_thread4Thread1of1ForFork0_~#t5~0.base_79| v_ArrVal_496) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) c_~s_2~0)) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork0_~#t5~0.base_79|)))) is different from false [2022-12-12 22:47:57,048 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 (Array Int Int)) (v_ArrVal_495 (Array Int Int)) (|v_thread4Thread1of1ForFork0_~#t5~0.base_79| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork0_~#t5~0.base_79|)) (= (+ c_~t_4~0 c_~s_2~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork5_~#t3~0.base| v_ArrVal_495) |v_thread4Thread1of1ForFork0_~#t5~0.base_79| v_ArrVal_496) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))) is different from false [2022-12-12 22:47:57,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:47:57,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 72 [2022-12-12 22:47:57,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2022-12-12 22:47:57,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-12 22:47:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:47:57,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104242068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:47:57,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:47:57,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2022-12-12 22:47:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376297795] [2022-12-12 22:47:57,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:47:57,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-12 22:47:57,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:47:57,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-12 22:47:57,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=513, Unknown=11, NotChecked=196, Total=812 [2022-12-12 22:47:57,239 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 61 [2022-12-12 22:47:57,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 652 transitions, 11968 flow. Second operand has 29 states, 29 states have (on average 9.172413793103448) internal successors, (266), 29 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:47:57,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:47:57,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 61 [2022-12-12 22:47:57,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:48:05,872 WARN L233 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 39 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 22:48:35,704 INFO L130 PetriNetUnfolder]: 76214/96340 cut-off events. [2022-12-12 22:48:35,704 INFO L131 PetriNetUnfolder]: For 130657/130657 co-relation queries the response was YES. [2022-12-12 22:48:35,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931778 conditions, 96340 events. 76214/96340 cut-off events. For 130657/130657 co-relation queries the response was YES. Maximal size of possible extension queue 1999. Compared 471395 event pairs, 2750 based on Foata normal form. 1/81701 useless extension candidates. Maximal degree in co-relation 925655. Up to 90817 conditions per place. [2022-12-12 22:48:36,513 INFO L137 encePairwiseOnDemand]: 22/61 looper letters, 1783 selfloop transitions, 538 changer transitions 8/2335 dead transitions. [2022-12-12 22:48:36,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 2335 transitions, 46305 flow [2022-12-12 22:48:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 22:48:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 22:48:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 803 transitions. [2022-12-12 22:48:36,516 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4539287733182589 [2022-12-12 22:48:36,516 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 57 predicate places. [2022-12-12 22:48:36,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 2335 transitions, 46305 flow [2022-12-12 22:48:37,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 2327 transitions, 46142 flow [2022-12-12 22:48:37,185 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 2327 transitions, 46142 flow [2022-12-12 22:48:37,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.172413793103448) internal successors, (266), 29 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:48:37,185 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:48:37,186 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:48:37,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 22:48:37,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:48:37,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-12 22:48:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:48:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1241617543, now seen corresponding path program 1 times [2022-12-12 22:48:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:48:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403148796] [2022-12-12 22:48:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:48:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:48:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:48:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:48:38,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:48:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403148796] [2022-12-12 22:48:38,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403148796] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 22:48:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516778170] [2022-12-12 22:48:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:48:38,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 22:48:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:48:38,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 22:48:38,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 22:48:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:48:38,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-12 22:48:38,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 22:48:38,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:48:38,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-12 22:48:38,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 22:48:38,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-12 22:48:38,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-12 22:48:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:48:38,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 22:48:38,791 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork5_~#t3~0.base_89| Int) (v_ArrVal_571 (Array Int Int)) (v_ArrVal_572 (Array Int Int))) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork5_~#t3~0.base_89|)) (= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork5_~#t2~0.base| v_ArrVal_571) |v_thread1Thread1of1ForFork5_~#t3~0.base_89| v_ArrVal_572) c_~X_0~0.base) (+ c_~X_0~0.offset 4))))) is different from false [2022-12-12 22:48:38,801 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork5_~#t3~0.base_89| Int) (v_ArrVal_571 (Array Int Int)) (v_ArrVal_572 (Array Int Int))) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork5_~#t3~0.base_89|)) (= (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork5_~#t2~0.base| v_ArrVal_571) |v_thread1Thread1of1ForFork5_~#t3~0.base_89| v_ArrVal_572) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ c_~s_6~0 c_~t_8~0)))) is different from false [2022-12-12 22:48:38,809 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 22:48:38,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 72 [2022-12-12 22:48:38,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2022-12-12 22:48:38,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-12 22:48:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 22:48:38,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516778170] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 22:48:38,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 22:48:38,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2022-12-12 22:48:38,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495663404] [2022-12-12 22:48:38,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 22:48:38,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-12 22:48:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:48:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-12 22:48:38,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=686, Unknown=12, NotChecked=110, Total=930 [2022-12-12 22:48:38,944 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 61 [2022-12-12 22:48:38,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 2327 transitions, 46142 flow. Second operand has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 31 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 22:48:38,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:48:38,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 61 [2022-12-12 22:48:38,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand