/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 16:18:59,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 16:18:59,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 16:18:59,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 16:18:59,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 16:18:59,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 16:18:59,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 16:18:59,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 16:18:59,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 16:18:59,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 16:18:59,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 16:18:59,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 16:18:59,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 16:18:59,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 16:18:59,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 16:18:59,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 16:18:59,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 16:18:59,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 16:18:59,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 16:18:59,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 16:18:59,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 16:18:59,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 16:18:59,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 16:18:59,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 16:18:59,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 16:18:59,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 16:18:59,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 16:18:59,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 16:18:59,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 16:18:59,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 16:18:59,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 16:18:59,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 16:18:59,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 16:18:59,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 16:18:59,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 16:18:59,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 16:18:59,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 16:18:59,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 16:18:59,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 16:18:59,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 16:18:59,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 16:18:59,756 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 16:18:59,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 16:18:59,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 16:18:59,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 16:18:59,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 16:18:59,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 16:18:59,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 16:18:59,786 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 16:18:59,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 16:18:59,786 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 16:18:59,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 16:18:59,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 16:18:59,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 16:18:59,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 16:18:59,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 16:18:59,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 16:18:59,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:18:59,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 16:18:59,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 16:18:59,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 16:18:59,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 16:18:59,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 16:18:59,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 16:18:59,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 16:19:00,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 16:19:00,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 16:19:00,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 16:19:00,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 16:19:00,059 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 16:19:00,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2022-12-12 16:19:01,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 16:19:01,257 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 16:19:01,258 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2022-12-12 16:19:01,262 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faeb2ac54/1c71ad6777b44483ab4e7ae9c01921c7/FLAG0a89c4376 [2022-12-12 16:19:01,273 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faeb2ac54/1c71ad6777b44483ab4e7ae9c01921c7 [2022-12-12 16:19:01,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 16:19:01,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 16:19:01,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 16:19:01,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 16:19:01,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 16:19:01,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208eb33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01, skipping insertion in model container [2022-12-12 16:19:01,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 16:19:01,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 16:19:01,412 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-12 16:19:01,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:19:01,428 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 16:19:01,442 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-12 16:19:01,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:19:01,453 INFO L208 MainTranslator]: Completed translation [2022-12-12 16:19:01,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01 WrapperNode [2022-12-12 16:19:01,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 16:19:01,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 16:19:01,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 16:19:01,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 16:19:01,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,487 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 193 [2022-12-12 16:19:01,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 16:19:01,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 16:19:01,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 16:19:01,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 16:19:01,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,521 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 16:19:01,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 16:19:01,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 16:19:01,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 16:19:01,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (1/1) ... [2022-12-12 16:19:01,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:19:01,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:01,570 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 16:19:01,576 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 16:19:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 16:19:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 16:19:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 16:19:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 16:19:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 16:19:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 16:19:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 16:19:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 16:19:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 16:19:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 16:19:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 16:19:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 16:19:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 16:19:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 16:19:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 16:19:01,603 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 16:19:01,731 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 16:19:01,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 16:19:02,015 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 16:19:02,021 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 16:19:02,022 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-12 16:19:02,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:19:02 BoogieIcfgContainer [2022-12-12 16:19:02,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 16:19:02,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 16:19:02,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 16:19:02,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 16:19:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 04:19:01" (1/3) ... [2022-12-12 16:19:02,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d265370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:19:02, skipping insertion in model container [2022-12-12 16:19:02,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:19:01" (2/3) ... [2022-12-12 16:19:02,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d265370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:19:02, skipping insertion in model container [2022-12-12 16:19:02,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:19:02" (3/3) ... [2022-12-12 16:19:02,030 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-12-12 16:19:02,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 16:19:02,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 16:19:02,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 16:19:02,107 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 16:19:02,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 265 transitions, 554 flow [2022-12-12 16:19:02,289 INFO L130 PetriNetUnfolder]: 25/262 cut-off events. [2022-12-12 16:19:02,289 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:19:02,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 262 events. 25/262 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 174 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2022-12-12 16:19:02,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 265 transitions, 554 flow [2022-12-12 16:19:02,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 252 transitions, 522 flow [2022-12-12 16:19:02,302 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 16:19:02,314 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 252 transitions, 522 flow [2022-12-12 16:19:02,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 252 transitions, 522 flow [2022-12-12 16:19:02,371 INFO L130 PetriNetUnfolder]: 25/252 cut-off events. [2022-12-12 16:19:02,371 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:19:02,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 252 events. 25/252 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2022-12-12 16:19:02,375 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 252 transitions, 522 flow [2022-12-12 16:19:02,391 INFO L226 LiptonReduction]: Number of co-enabled transitions 2184 [2022-12-12 16:19:09,117 INFO L241 LiptonReduction]: Total number of compositions: 216 [2022-12-12 16:19:09,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 16:19:09,139 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;@7562a170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 16:19:09,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 16:19:09,153 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2022-12-12 16:19:09,153 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:19:09,153 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:09,154 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:19:09,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1662809703, now seen corresponding path program 1 times [2022-12-12 16:19:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:09,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527684655] [2022-12-12 16:19:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:09,646 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 16:19:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527684655] [2022-12-12 16:19:09,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527684655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:19:09,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:19:09,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 16:19:09,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811566644] [2022-12-12 16:19:09,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:19:09,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 16:19:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:09,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 16:19:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 16:19:09,683 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 36 [2022-12-12 16:19:09,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 16:19:09,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:09,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 36 [2022-12-12 16:19:09,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:09,921 INFO L130 PetriNetUnfolder]: 1632/2322 cut-off events. [2022-12-12 16:19:09,921 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-12-12 16:19:09,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2322 events. 1632/2322 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10455 event pairs, 885 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 1294. Up to 755 conditions per place. [2022-12-12 16:19:09,929 INFO L137 encePairwiseOnDemand]: 26/36 looper letters, 26 selfloop transitions, 8 changer transitions 56/96 dead transitions. [2022-12-12 16:19:09,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 426 flow [2022-12-12 16:19:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:19:09,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:19:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2022-12-12 16:19:09,937 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2022-12-12 16:19:09,938 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 122 transitions. [2022-12-12 16:19:09,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 426 flow [2022-12-12 16:19:09,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 16:19:09,945 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2022-12-12 16:19:09,946 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-12 16:19:09,949 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2022-12-12 16:19:09,949 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2022-12-12 16:19:09,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 16:19:09,949 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:09,950 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:19:09,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 16:19:09,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash -499238112, now seen corresponding path program 1 times [2022-12-12 16:19:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:09,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607188061] [2022-12-12 16:19:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:10,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607188061] [2022-12-12 16:19:10,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607188061] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:10,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312946869] [2022-12-12 16:19:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:10,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:10,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:10,106 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 16:19:10,171 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 16:19:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 16:19:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:10,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:19:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:10,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312946869] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:10,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 16:19:10,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-12-12 16:19:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207252990] [2022-12-12 16:19:10,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:19:10,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:19:10,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:19:10,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 16:19:10,418 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2022-12-12 16:19:10,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 16:19:10,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:10,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2022-12-12 16:19:10,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:10,561 INFO L130 PetriNetUnfolder]: 757/1068 cut-off events. [2022-12-12 16:19:10,561 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-12 16:19:10,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 1068 events. 757/1068 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4188 event pairs, 239 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 2169. Up to 543 conditions per place. [2022-12-12 16:19:10,567 INFO L137 encePairwiseOnDemand]: 30/36 looper letters, 43 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2022-12-12 16:19:10,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 252 flow [2022-12-12 16:19:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:19:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:19:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2022-12-12 16:19:10,570 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2022-12-12 16:19:10,571 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 66 transitions. [2022-12-12 16:19:10,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 252 flow [2022-12-12 16:19:10,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 234 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-12 16:19:10,573 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2022-12-12 16:19:10,573 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2022-12-12 16:19:10,573 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-12-12 16:19:10,574 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2022-12-12 16:19:10,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 16:19:10,576 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:10,577 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] [2022-12-12 16:19:10,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 16:19:10,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:10,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1523956951, now seen corresponding path program 1 times [2022-12-12 16:19:10,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:10,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464703816] [2022-12-12 16:19:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:10,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:10,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464703816] [2022-12-12 16:19:10,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464703816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:10,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777709159] [2022-12-12 16:19:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:10,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:10,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:10,955 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 16:19:10,957 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 16:19:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:11,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:19:11,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:11,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:19:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:11,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777709159] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:11,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 16:19:11,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2022-12-12 16:19:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912469282] [2022-12-12 16:19:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:19:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 16:19:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 16:19:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-12 16:19:11,193 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2022-12-12 16:19:11,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 16:19:11,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:11,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2022-12-12 16:19:11,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:11,485 INFO L130 PetriNetUnfolder]: 1273/1850 cut-off events. [2022-12-12 16:19:11,486 INFO L131 PetriNetUnfolder]: For 1048/1268 co-relation queries the response was YES. [2022-12-12 16:19:11,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 1850 events. 1273/1850 cut-off events. For 1048/1268 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8097 event pairs, 323 based on Foata normal form. 220/1854 useless extension candidates. Maximal degree in co-relation 4387. Up to 673 conditions per place. [2022-12-12 16:19:11,494 INFO L137 encePairwiseOnDemand]: 27/36 looper letters, 95 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2022-12-12 16:19:11,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 112 transitions, 568 flow [2022-12-12 16:19:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 16:19:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 16:19:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2022-12-12 16:19:11,499 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2022-12-12 16:19:11,499 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 9 states and 120 transitions. [2022-12-12 16:19:11,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 112 transitions, 568 flow [2022-12-12 16:19:11,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 112 transitions, 552 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-12 16:19:11,501 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 213 flow [2022-12-12 16:19:11,501 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2022-12-12 16:19:11,502 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2022-12-12 16:19:11,502 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 213 flow [2022-12-12 16:19:11,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 16:19:11,502 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:11,502 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:19:11,508 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 16:19:11,708 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,SelfDestructingSolverStorable2 [2022-12-12 16:19:11,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1759989881, now seen corresponding path program 2 times [2022-12-12 16:19:11,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:11,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738177168] [2022-12-12 16:19:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:11,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:11,856 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 16:19:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:11,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738177168] [2022-12-12 16:19:11,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738177168] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:11,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542751003] [2022-12-12 16:19:11,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 16:19:11,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:11,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:11,859 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 16:19:11,898 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 16:19:12,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:19:12,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:19:12,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-12 16:19:12,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:12,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 16:19:12,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542751003] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:19:12,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 16:19:12,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2022-12-12 16:19:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566704103] [2022-12-12 16:19:12,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:19:12,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 16:19:12,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 16:19:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-12 16:19:12,299 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2022-12-12 16:19:12,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 16:19:12,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:12,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2022-12-12 16:19:12,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:12,656 INFO L130 PetriNetUnfolder]: 2209/3209 cut-off events. [2022-12-12 16:19:12,656 INFO L131 PetriNetUnfolder]: For 2932/3312 co-relation queries the response was YES. [2022-12-12 16:19:12,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 3209 events. 2209/3209 cut-off events. For 2932/3312 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15030 event pairs, 889 based on Foata normal form. 381/3584 useless extension candidates. Maximal degree in co-relation 9164. Up to 1821 conditions per place. [2022-12-12 16:19:12,679 INFO L137 encePairwiseOnDemand]: 29/36 looper letters, 97 selfloop transitions, 8 changer transitions 11/118 dead transitions. [2022-12-12 16:19:12,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 118 transitions, 701 flow [2022-12-12 16:19:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 16:19:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 16:19:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2022-12-12 16:19:12,681 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2022-12-12 16:19:12,681 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 213 flow. Second operand 6 states and 98 transitions. [2022-12-12 16:19:12,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 118 transitions, 701 flow [2022-12-12 16:19:12,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 118 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 16:19:12,695 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 283 flow [2022-12-12 16:19:12,695 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2022-12-12 16:19:12,696 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2022-12-12 16:19:12,697 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 283 flow [2022-12-12 16:19:12,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 16:19:12,697 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:12,697 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] [2022-12-12 16:19:12,715 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 16:19:12,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:12,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1365951847, now seen corresponding path program 3 times [2022-12-12 16:19:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:12,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225794696] [2022-12-12 16:19:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:12,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:13,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225794696] [2022-12-12 16:19:13,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225794696] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:13,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763191306] [2022-12-12 16:19:13,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 16:19:13,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:13,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:13,133 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 16:19:13,175 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 16:19:13,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 16:19:13,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:19:13,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-12 16:19:13,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:13,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 16:19:13,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763191306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:19:13,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 16:19:13,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2022-12-12 16:19:13,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885733337] [2022-12-12 16:19:13,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:19:13,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 16:19:13,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 16:19:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-12 16:19:13,531 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2022-12-12 16:19:13,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 16:19:13,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:13,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2022-12-12 16:19:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:13,918 INFO L130 PetriNetUnfolder]: 2623/3817 cut-off events. [2022-12-12 16:19:13,918 INFO L131 PetriNetUnfolder]: For 5270/5722 co-relation queries the response was YES. [2022-12-12 16:19:13,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12088 conditions, 3817 events. 2623/3817 cut-off events. For 5270/5722 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18732 event pairs, 1005 based on Foata normal form. 453/4264 useless extension candidates. Maximal degree in co-relation 12059. Up to 1771 conditions per place. [2022-12-12 16:19:13,935 INFO L137 encePairwiseOnDemand]: 29/36 looper letters, 94 selfloop transitions, 15 changer transitions 11/122 dead transitions. [2022-12-12 16:19:13,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 122 transitions, 781 flow [2022-12-12 16:19:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 16:19:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 16:19:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2022-12-12 16:19:13,936 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2022-12-12 16:19:13,936 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 283 flow. Second operand 6 states and 107 transitions. [2022-12-12 16:19:13,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 122 transitions, 781 flow [2022-12-12 16:19:13,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 122 transitions, 766 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-12 16:19:13,949 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 398 flow [2022-12-12 16:19:13,949 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2022-12-12 16:19:13,951 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2022-12-12 16:19:13,951 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 398 flow [2022-12-12 16:19:13,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 16:19:13,951 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:13,951 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] [2022-12-12 16:19:13,956 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 16:19:14,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:14,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash 372170235, now seen corresponding path program 4 times [2022-12-12 16:19:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:14,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079939547] [2022-12-12 16:19:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:14,338 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 16:19:14,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:14,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079939547] [2022-12-12 16:19:14,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079939547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:14,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117476287] [2022-12-12 16:19:14,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 16:19:14,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:14,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:14,340 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 16:19:14,342 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 16:19:14,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 16:19:14,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:19:14,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 16:19:14,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:14,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:19:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117476287] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:19:14,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:19:14,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-12 16:19:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491337031] [2022-12-12 16:19:14,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:19:14,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 16:19:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 16:19:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-12 16:19:14,540 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 36 [2022-12-12 16:19:14,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 398 flow. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:19:14,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:14,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 36 [2022-12-12 16:19:14,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:15,524 INFO L130 PetriNetUnfolder]: 4349/6260 cut-off events. [2022-12-12 16:19:15,524 INFO L131 PetriNetUnfolder]: For 12463/12463 co-relation queries the response was YES. [2022-12-12 16:19:15,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20966 conditions, 6260 events. 4349/6260 cut-off events. For 12463/12463 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 30469 event pairs, 74 based on Foata normal form. 16/6272 useless extension candidates. Maximal degree in co-relation 20934. Up to 1455 conditions per place. [2022-12-12 16:19:15,561 INFO L137 encePairwiseOnDemand]: 18/36 looper letters, 193 selfloop transitions, 99 changer transitions 0/292 dead transitions. [2022-12-12 16:19:15,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 292 transitions, 2084 flow [2022-12-12 16:19:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-12 16:19:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-12 16:19:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 231 transitions. [2022-12-12 16:19:15,568 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2022-12-12 16:19:15,568 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 398 flow. Second operand 22 states and 231 transitions. [2022-12-12 16:19:15,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 292 transitions, 2084 flow [2022-12-12 16:19:15,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 292 transitions, 2038 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-12 16:19:15,601 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1316 flow [2022-12-12 16:19:15,601 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1316, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2022-12-12 16:19:15,602 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2022-12-12 16:19:15,602 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1316 flow [2022-12-12 16:19:15,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:19:15,602 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:15,602 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] [2022-12-12 16:19:15,609 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 16:19:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:15,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1780469119, now seen corresponding path program 5 times [2022-12-12 16:19:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77031220] [2022-12-12 16:19:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:15,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:15,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77031220] [2022-12-12 16:19:15,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77031220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:15,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423508152] [2022-12-12 16:19:15,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 16:19:15,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:15,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:16,001 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 16:19:16,003 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 16:19:16,094 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:19:16,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:19:16,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 16:19:16,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:16,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:19:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:16,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423508152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:19:16,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:19:16,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-12 16:19:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850160967] [2022-12-12 16:19:16,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:19:16,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 16:19:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 16:19:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-12-12 16:19:16,237 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 36 [2022-12-12 16:19:16,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1316 flow. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 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 16:19:16,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:16,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 36 [2022-12-12 16:19:16,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:17,859 INFO L130 PetriNetUnfolder]: 7600/10923 cut-off events. [2022-12-12 16:19:17,859 INFO L131 PetriNetUnfolder]: For 48154/48154 co-relation queries the response was YES. [2022-12-12 16:19:17,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45361 conditions, 10923 events. 7600/10923 cut-off events. For 48154/48154 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 58269 event pairs, 637 based on Foata normal form. 26/10948 useless extension candidates. Maximal degree in co-relation 45277. Up to 1894 conditions per place. [2022-12-12 16:19:17,928 INFO L137 encePairwiseOnDemand]: 18/36 looper letters, 285 selfloop transitions, 167 changer transitions 0/452 dead transitions. [2022-12-12 16:19:17,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 452 transitions, 4331 flow [2022-12-12 16:19:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 16:19:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 16:19:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 256 transitions. [2022-12-12 16:19:17,930 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3742690058479532 [2022-12-12 16:19:17,930 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1316 flow. Second operand 19 states and 256 transitions. [2022-12-12 16:19:17,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 452 transitions, 4331 flow [2022-12-12 16:19:18,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 452 transitions, 4194 flow, removed 63 selfloop flow, removed 3 redundant places. [2022-12-12 16:19:18,297 INFO L231 Difference]: Finished difference. Result has 125 places, 247 transitions, 2987 flow [2022-12-12 16:19:18,297 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2987, PETRI_PLACES=125, PETRI_TRANSITIONS=247} [2022-12-12 16:19:18,298 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2022-12-12 16:19:18,298 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 247 transitions, 2987 flow [2022-12-12 16:19:18,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 17 states have internal predecessors, (66), 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 16:19:18,298 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:18,298 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] [2022-12-12 16:19:18,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-12 16:19:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:18,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:18,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash 591458727, now seen corresponding path program 6 times [2022-12-12 16:19:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:18,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099092267] [2022-12-12 16:19:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 16:19:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099092267] [2022-12-12 16:19:18,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099092267] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736831944] [2022-12-12 16:19:18,637 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 16:19:18,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:18,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:19:18,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 16:19:18,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-12 16:19:18,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:19:18,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-12 16:19:18,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 16:19:18,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 16:19:18,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736831944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:19:18,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 16:19:18,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2022-12-12 16:19:18,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847621956] [2022-12-12 16:19:18,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:19:18,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 16:19:18,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:19:18,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 16:19:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-12 16:19:18,776 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2022-12-12 16:19:18,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 247 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 16:19:18,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:19:18,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2022-12-12 16:19:18,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:19:19,896 INFO L130 PetriNetUnfolder]: 6246/9085 cut-off events. [2022-12-12 16:19:19,897 INFO L131 PetriNetUnfolder]: For 71172/71351 co-relation queries the response was YES. [2022-12-12 16:19:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44866 conditions, 9085 events. 6246/9085 cut-off events. For 71172/71351 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 50065 event pairs, 1918 based on Foata normal form. 139/9177 useless extension candidates. Maximal degree in co-relation 44764. Up to 4456 conditions per place. [2022-12-12 16:19:19,957 INFO L137 encePairwiseOnDemand]: 29/36 looper letters, 203 selfloop transitions, 67 changer transitions 13/312 dead transitions. [2022-12-12 16:19:19,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 312 transitions, 4005 flow [2022-12-12 16:19:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 16:19:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 16:19:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2022-12-12 16:19:19,971 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2022-12-12 16:19:19,971 INFO L175 Difference]: Start difference. First operand has 125 places, 247 transitions, 2987 flow. Second operand 6 states and 101 transitions. [2022-12-12 16:19:19,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 312 transitions, 4005 flow [2022-12-12 16:19:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 312 transitions, 3815 flow, removed 62 selfloop flow, removed 4 redundant places. [2022-12-12 16:19:20,379 INFO L231 Difference]: Finished difference. Result has 129 places, 251 transitions, 3091 flow [2022-12-12 16:19:20,380 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3091, PETRI_PLACES=129, PETRI_TRANSITIONS=251} [2022-12-12 16:19:20,382 INFO L295 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2022-12-12 16:19:20,382 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 251 transitions, 3091 flow [2022-12-12 16:19:20,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 16:19:20,382 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:19:20,382 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] [2022-12-12 16:19:20,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-12 16:19:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:20,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:19:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:19:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1536096823, now seen corresponding path program 1 times [2022-12-12 16:19:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:19:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159350573] [2022-12-12 16:19:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:19:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:22,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:19:22,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159350573] [2022-12-12 16:19:22,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159350573] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:19:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17793216] [2022-12-12 16:19:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:19:22,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:19:22,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:19:22,508 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:19:22,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 16:19:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:19:22,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-12 16:19:22,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:19:22,709 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-12 16:19:22,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-12-12 16:19:22,809 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-12 16:19:22,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-12 16:19:22,879 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-12 16:19:22,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-12 16:19:22,956 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-12 16:19:22,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-12-12 16:19:23,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2022-12-12 16:19:23,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 16:19:23,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2022-12-12 16:19:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 16:19:24,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:20:34,356 INFO L321 Elim1Store]: treesize reduction 106, result has 71.4 percent of original size [2022-12-12 16:20:34,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3446 treesize of output 1789 [2022-12-12 16:20:34,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:20:34,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2012 treesize of output 1888 [2022-12-12 16:20:34,725 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-12 16:20:34,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 49 treesize of output 41 [2022-12-12 16:20:35,197 INFO L321 Elim1Store]: treesize reduction 20, result has 67.2 percent of original size [2022-12-12 16:20:35,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 113 [2022-12-12 16:20:35,856 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-12 16:20:35,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 33 Received shutdown request... [2022-12-12 16:33:23,941 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-12 16:33:23,943 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 16:33:23,946 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 16:33:23,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 16:33:23,979 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 16:33:24,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-12 16:33:24,149 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 8ms.. [2022-12-12 16:33:24,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 16:33:24,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 16:33:24,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 16:33:24,151 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2022-12-12 16:33:24,162 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 16:33:24,162 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 16:33:24,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 04:33:24 BasicIcfg [2022-12-12 16:33:24,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 16:33:24,172 INFO L158 Benchmark]: Toolchain (without parser) took 862895.65ms. Allocated memory was 203.4MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 179.4MB in the beginning and 1.0GB in the end (delta: -822.7MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2022-12-12 16:33:24,172 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 179.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 16:33:24,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.11ms. Allocated memory is still 203.4MB. Free memory was 179.4MB in the beginning and 167.8MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 16:33:24,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.67ms. Allocated memory is still 203.4MB. Free memory was 167.8MB in the beginning and 165.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 16:33:24,173 INFO L158 Benchmark]: Boogie Preprocessor took 44.30ms. Allocated memory is still 203.4MB. Free memory was 165.7MB in the beginning and 163.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 16:33:24,173 INFO L158 Benchmark]: RCFGBuilder took 490.45ms. Allocated memory is still 203.4MB. Free memory was 163.6MB in the beginning and 141.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-12 16:33:24,174 INFO L158 Benchmark]: TraceAbstraction took 862144.96ms. Allocated memory was 203.4MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 140.5MB in the beginning and 1.0GB in the end (delta: -861.6MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-12-12 16:33:24,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 179.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.11ms. Allocated memory is still 203.4MB. Free memory was 179.4MB in the beginning and 167.8MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.67ms. Allocated memory is still 203.4MB. Free memory was 167.8MB in the beginning and 165.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.30ms. Allocated memory is still 203.4MB. Free memory was 165.7MB in the beginning and 163.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 490.45ms. Allocated memory is still 203.4MB. Free memory was 163.6MB in the beginning and 141.6MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 862144.96ms. Allocated memory was 203.4MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 140.5MB in the beginning and 1.0GB in the end (delta: -861.6MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 237 PlacesBefore, 39 PlacesAfterwards, 252 TransitionsBefore, 36 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 162 TrivialYvCompositions, 36 ConcurrentYvCompositions, 18 ChoiceCompositions, 216 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1134, independent: 1091, independent conditional: 1091, independent unconditional: 0, dependent: 43, dependent conditional: 43, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1134, independent: 1091, independent conditional: 0, independent unconditional: 1091, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1134, independent: 1091, independent conditional: 0, independent unconditional: 1091, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1134, independent: 1091, independent conditional: 0, independent unconditional: 1091, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1078, independent: 1051, independent conditional: 0, independent unconditional: 1051, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1078, independent: 1051, independent conditional: 0, independent unconditional: 1051, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1134, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 1078, unknown conditional: 0, unknown unconditional: 1078] , Statistics on independence cache: Total cache size (in pairs): 1621, Positive cache size: 1594, Positive conditional cache size: 0, Positive unconditional cache size: 1594, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 8ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 8ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 8ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 8ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 283 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 862.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 840 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 840 mSDsluCounter, 222 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 167 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3065 IncrementalHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 55 mSDtfsCounter, 3065 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 282 SyntacticMatches, 8 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3091occurred in iteration=8, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 437 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 1607 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2090 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 72/87 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown