/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:08:19,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:08:19,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:08:19,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:08:19,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:08:19,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:08:19,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:08:19,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:08:19,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:08:19,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:08:19,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:08:19,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:08:19,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:08:19,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:08:19,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:08:19,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:08:19,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:08:19,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:08:19,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:08:19,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:08:19,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:08:19,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:08:19,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:08:19,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:08:19,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:08:19,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:08:19,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:08:19,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:08:19,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:08:19,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:08:19,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:08:19,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:08:19,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:08:19,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:08:19,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:08:19,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:08:19,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:08:19,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:08:19,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:08:19,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:08:19,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:08:19,650 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-VariableLbe.epf [2023-01-28 12:08:19,672 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:08:19,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:08:19,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:08:19,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:08:19,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:08:19,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:08:19,691 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:08:19,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:08:19,691 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:08:19,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:08:19,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:08:19,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:08:19,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:08:19,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:08:19,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:08:19,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:08:19,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:08:19,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:08:19,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:08:19,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:08:19,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:08:19,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:08:19,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:08:19,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:08:19,694 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:08:20,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:08:20,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:08:20,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:08:20,074 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:08:20,075 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:08:20,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-01-28 12:08:21,555 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:08:21,850 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:08:21,850 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-01-28 12:08:21,867 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc8b7a73/c84f4a5761b44d6fbf9ba44243a457f6/FLAGaa020e0c8 [2023-01-28 12:08:21,879 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc8b7a73/c84f4a5761b44d6fbf9ba44243a457f6 [2023-01-28 12:08:21,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:08:21,883 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:08:21,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:08:21,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:08:21,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:08:21,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:08:21" (1/1) ... [2023-01-28 12:08:21,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e959de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:21, skipping insertion in model container [2023-01-28 12:08:21,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:08:21" (1/1) ... [2023-01-28 12:08:21,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:08:21,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:08:22,170 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c[2641,2654] [2023-01-28 12:08:22,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:08:22,207 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:08:22,229 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c[2641,2654] [2023-01-28 12:08:22,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:08:22,254 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:08:22,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22 WrapperNode [2023-01-28 12:08:22,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:08:22,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:08:22,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:08:22,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:08:22,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,319 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 165 [2023-01-28 12:08:22,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:08:22,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:08:22,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:08:22,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:08:22,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:08:22,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:08:22,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:08:22,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:08:22,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (1/1) ... [2023-01-28 12:08:22,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:08:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:08:22,448 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) [2023-01-28 12:08:22,469 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 [2023-01-28 12:08:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:08:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:08:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:08:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:08:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:08:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:08:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:08:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:08:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 12:08:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:08:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:08:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:08:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:08:22,494 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 12:08:22,672 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:08:22,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:08:23,114 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:08:23,130 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:08:23,131 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 12:08:23,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:08:23 BoogieIcfgContainer [2023-01-28 12:08:23,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:08:23,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:08:23,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:08:23,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:08:23,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:08:21" (1/3) ... [2023-01-28 12:08:23,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765ea25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:08:23, skipping insertion in model container [2023-01-28 12:08:23,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:08:22" (2/3) ... [2023-01-28 12:08:23,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765ea25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:08:23, skipping insertion in model container [2023-01-28 12:08:23,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:08:23" (3/3) ... [2023-01-28 12:08:23,141 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2023-01-28 12:08:23,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:08:23,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:08:23,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:08:23,347 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:08:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 194 transitions, 404 flow [2023-01-28 12:08:23,602 INFO L130 PetriNetUnfolder]: 18/192 cut-off events. [2023-01-28 12:08:23,603 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:08:23,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 192 events. 18/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 300 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 12:08:23,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 194 transitions, 404 flow [2023-01-28 12:08:23,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 184 transitions, 380 flow [2023-01-28 12:08:23,625 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:08:23,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 184 transitions, 380 flow [2023-01-28 12:08:23,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 184 transitions, 380 flow [2023-01-28 12:08:23,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 184 transitions, 380 flow [2023-01-28 12:08:23,750 INFO L130 PetriNetUnfolder]: 18/184 cut-off events. [2023-01-28 12:08:23,750 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:08:23,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 18/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 12:08:23,754 INFO L119 LiptonReduction]: Number of co-enabled transitions 4092 [2023-01-28 12:08:29,469 INFO L134 LiptonReduction]: Checked pairs total: 4038 [2023-01-28 12:08:29,469 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-01-28 12:08:29,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:08:29,496 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;@643714ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:08:29,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:08:29,499 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 12:08:29,500 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:08:29,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:29,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:29,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:29,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash -562838425, now seen corresponding path program 1 times [2023-01-28 12:08:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:29,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982634654] [2023-01-28 12:08:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:29,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:08:29,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982634654] [2023-01-28 12:08:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982634654] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:08:29,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:08:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:08:29,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65784064] [2023-01-28 12:08:29,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:08:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:08:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:08:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:08:29,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 415 [2023-01-28 12:08:29,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2023-01-28 12:08:29,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:29,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 415 [2023-01-28 12:08:29,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:29,826 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-28 12:08:29,826 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 12:08:29,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-28 12:08:29,830 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 12:08:29,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 12:08:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:08:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:08:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-01-28 12:08:29,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41124497991967873 [2023-01-28 12:08:29,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-01-28 12:08:29,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-01-28 12:08:29,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:29,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-01-28 12:08:29,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-01-28 12:08:29,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 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) [2023-01-28 12:08:29,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 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) [2023-01-28 12:08:29,869 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 512 transitions. [2023-01-28 12:08:29,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 12:08:29,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:08:29,873 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 12:08:29,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 12:08:29,879 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 12:08:29,880 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 12:08:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2023-01-28 12:08:29,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:29,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:29,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:08:29,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:29,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1112897671, now seen corresponding path program 1 times [2023-01-28 12:08:29,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:29,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996547737] [2023-01-28 12:08:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:29,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996547737] [2023-01-28 12:08:30,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996547737] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:08:30,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:08:30,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:08:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418839954] [2023-01-28 12:08:30,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:08:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:08:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:08:30,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:08:30,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 12:08:30,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:30,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:30,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 12:08:30,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:30,362 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-01-28 12:08:30,362 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:08:30,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 367 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-01-28 12:08:30,364 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-01-28 12:08:30,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-01-28 12:08:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:08:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:08:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 800 transitions. [2023-01-28 12:08:30,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855421686746988 [2023-01-28 12:08:30,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 800 transitions. [2023-01-28 12:08:30,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 800 transitions. [2023-01-28 12:08:30,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:30,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 800 transitions. [2023-01-28 12:08:30,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 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) [2023-01-28 12:08:30,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:30,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:30,373 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 800 transitions. [2023-01-28 12:08:30,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-01-28 12:08:30,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:08:30,375 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-01-28 12:08:30,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-01-28 12:08:30,375 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-01-28 12:08:30,375 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-01-28 12:08:30,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:30,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:30,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:30,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:08:30,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:30,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:30,377 INFO L85 PathProgramCache]: Analyzing trace with hash -387576613, now seen corresponding path program 2 times [2023-01-28 12:08:30,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423093917] [2023-01-28 12:08:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:30,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:30,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:30,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423093917] [2023-01-28 12:08:30,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423093917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:08:30,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:08:30,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:08:30,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332881192] [2023-01-28 12:08:30,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:08:30,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:08:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:30,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:08:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:08:30,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 12:08:30,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:30,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:30,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 12:08:30,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:30,666 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2023-01-28 12:08:30,666 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-01-28 12:08:30,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 208 events. 111/208 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 662 event pairs, 42 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 584. Up to 133 conditions per place. [2023-01-28 12:08:30,668 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-01-28 12:08:30,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 252 flow [2023-01-28 12:08:30,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:08:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:08:30,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-01-28 12:08:30,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836144578313253 [2023-01-28 12:08:30,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-01-28 12:08:30,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-01-28 12:08:30,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:30,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-01-28 12:08:30,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-01-28 12:08:30,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:30,677 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:30,677 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 796 transitions. [2023-01-28 12:08:30,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 252 flow [2023-01-28 12:08:30,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 235 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 12:08:30,680 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2023-01-28 12:08:30,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-28 12:08:30,681 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-01-28 12:08:30,683 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2023-01-28 12:08:30,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:30,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:30,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:30,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:08:30,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:30,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash 111746231, now seen corresponding path program 3 times [2023-01-28 12:08:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932491437] [2023-01-28 12:08:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:30,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932491437] [2023-01-28 12:08:30,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932491437] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:08:30,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:08:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:08:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665886282] [2023-01-28 12:08:30,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:08:30,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:08:30,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:08:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:08:30,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 12:08:30,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:30,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:30,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 12:08:30,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:30,974 INFO L130 PetriNetUnfolder]: 121/224 cut-off events. [2023-01-28 12:08:30,975 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-01-28 12:08:30,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 224 events. 121/224 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 744 event pairs, 44 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 764. Up to 121 conditions per place. [2023-01-28 12:08:30,977 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2023-01-28 12:08:30,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 321 flow [2023-01-28 12:08:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:08:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:08:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2023-01-28 12:08:30,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860240963855422 [2023-01-28 12:08:30,979 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2023-01-28 12:08:30,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2023-01-28 12:08:30,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:30,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2023-01-28 12:08:30,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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) [2023-01-28 12:08:30,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:30,987 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:30,988 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 801 transitions. [2023-01-28 12:08:30,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 321 flow [2023-01-28 12:08:30,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 297 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 12:08:30,992 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2023-01-28 12:08:30,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-01-28 12:08:30,994 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-01-28 12:08:30,994 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2023-01-28 12:08:30,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:30,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:30,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:30,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 12:08:30,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:30,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:30,995 INFO L85 PathProgramCache]: Analyzing trace with hash 664116733, now seen corresponding path program 4 times [2023-01-28 12:08:30,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:30,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50549365] [2023-01-28 12:08:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:30,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:31,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50549365] [2023-01-28 12:08:31,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50549365] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:08:31,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:08:31,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:08:31,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451640963] [2023-01-28 12:08:31,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:08:31,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:08:31,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:31,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:08:31,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:08:31,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 12:08:31,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:31,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:31,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 12:08:31,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:31,235 INFO L130 PetriNetUnfolder]: 117/220 cut-off events. [2023-01-28 12:08:31,235 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2023-01-28 12:08:31,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 220 events. 117/220 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 720 event pairs, 50 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 824. Up to 177 conditions per place. [2023-01-28 12:08:31,236 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 32 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2023-01-28 12:08:31,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 375 flow [2023-01-28 12:08:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:08:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:08:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-01-28 12:08:31,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38313253012048193 [2023-01-28 12:08:31,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-01-28 12:08:31,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-01-28 12:08:31,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:31,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-01-28 12:08:31,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 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) [2023-01-28 12:08:31,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:31,244 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:31,244 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 795 transitions. [2023-01-28 12:08:31,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 375 flow [2023-01-28 12:08:31,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 362 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 12:08:31,247 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2023-01-28 12:08:31,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-28 12:08:31,249 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2023-01-28 12:08:31,249 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2023-01-28 12:08:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:31,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:31,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:31,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 12:08:31,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:31,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1682708675, now seen corresponding path program 5 times [2023-01-28 12:08:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759134585] [2023-01-28 12:08:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759134585] [2023-01-28 12:08:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759134585] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:08:31,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:08:31,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:08:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248294578] [2023-01-28 12:08:31,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:08:31,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:08:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:31,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:08:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:08:31,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 12:08:31,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:31,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:31,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 12:08:31,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:31,452 INFO L130 PetriNetUnfolder]: 118/223 cut-off events. [2023-01-28 12:08:31,452 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-01-28 12:08:31,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 223 events. 118/223 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 742 event pairs, 38 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 934. Up to 123 conditions per place. [2023-01-28 12:08:31,453 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-01-28 12:08:31,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 442 flow [2023-01-28 12:08:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:08:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:08:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2023-01-28 12:08:31,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38506024096385544 [2023-01-28 12:08:31,455 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2023-01-28 12:08:31,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2023-01-28 12:08:31,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:31,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2023-01-28 12:08:31,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 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) [2023-01-28 12:08:31,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:31,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:31,459 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 799 transitions. [2023-01-28 12:08:31,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 442 flow [2023-01-28 12:08:31,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 388 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 12:08:31,462 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2023-01-28 12:08:31,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-01-28 12:08:31,462 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-01-28 12:08:31,462 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2023-01-28 12:08:31,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:31,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:31,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:31,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 12:08:31,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:31,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1368229791, now seen corresponding path program 6 times [2023-01-28 12:08:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833858438] [2023-01-28 12:08:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:31,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833858438] [2023-01-28 12:08:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833858438] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:08:31,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:08:31,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:08:31,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414816452] [2023-01-28 12:08:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:08:31,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:08:31,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:08:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:08:31,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 12:08:31,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:31,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:31,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 12:08:31,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:31,643 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-01-28 12:08:31,643 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2023-01-28 12:08:31,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 216 events. 117/216 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 703 event pairs, 49 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 870. Up to 170 conditions per place. [2023-01-28 12:08:31,644 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2023-01-28 12:08:31,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 414 flow [2023-01-28 12:08:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:08:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:08:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-01-28 12:08:31,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38313253012048193 [2023-01-28 12:08:31,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-01-28 12:08:31,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-01-28 12:08:31,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:31,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-01-28 12:08:31,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 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) [2023-01-28 12:08:31,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:31,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 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) [2023-01-28 12:08:31,650 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 795 transitions. [2023-01-28 12:08:31,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 414 flow [2023-01-28 12:08:31,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 12:08:31,652 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2023-01-28 12:08:31,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-01-28 12:08:31,653 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2023-01-28 12:08:31,653 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2023-01-28 12:08:31,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-01-28 12:08:31,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:31,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:31,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 12:08:31,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:31,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1003719491, now seen corresponding path program 1 times [2023-01-28 12:08:31,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:31,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918177918] [2023-01-28 12:08:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:31,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918177918] [2023-01-28 12:08:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918177918] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:08:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274929133] [2023-01-28 12:08:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:31,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:08:31,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:08:31,881 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) [2023-01-28 12:08:31,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 12:08:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:31,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 12:08:31,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:08:33,459 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 12:08:33,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 168 [2023-01-28 12:08:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:08:33,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:08:35,080 INFO L321 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-01-28 12:08:35,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 45 [2023-01-28 12:08:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:35,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274929133] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:08:35,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:08:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 18 [2023-01-28 12:08:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498526522] [2023-01-28 12:08:35,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:08:35,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 12:08:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 12:08:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-28 12:08:35,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 12:08:35,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 108.16666666666667) internal successors, (1947), 18 states have internal predecessors, (1947), 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) [2023-01-28 12:08:35,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:35,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 12:08:35,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:39,144 INFO L130 PetriNetUnfolder]: 445/853 cut-off events. [2023-01-28 12:08:39,144 INFO L131 PetriNetUnfolder]: For 2069/2069 co-relation queries the response was YES. [2023-01-28 12:08:39,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 853 events. 445/853 cut-off events. For 2069/2069 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4322 event pairs, 17 based on Foata normal form. 9/723 useless extension candidates. Maximal degree in co-relation 2803. Up to 261 conditions per place. [2023-01-28 12:08:39,149 INFO L137 encePairwiseOnDemand]: 403/415 looper letters, 140 selfloop transitions, 91 changer transitions 28/259 dead transitions. [2023-01-28 12:08:39,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 259 transitions, 1884 flow [2023-01-28 12:08:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-28 12:08:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-28 12:08:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3727 transitions. [2023-01-28 12:08:39,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27214311792625046 [2023-01-28 12:08:39,158 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3727 transitions. [2023-01-28 12:08:39,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3727 transitions. [2023-01-28 12:08:39,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:08:39,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3727 transitions. [2023-01-28 12:08:39,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 112.93939393939394) internal successors, (3727), 33 states have internal predecessors, (3727), 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) [2023-01-28 12:08:39,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 415.0) internal successors, (14110), 34 states have internal predecessors, (14110), 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) [2023-01-28 12:08:39,194 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 415.0) internal successors, (14110), 34 states have internal predecessors, (14110), 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) [2023-01-28 12:08:39,194 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 294 flow. Second operand 33 states and 3727 transitions. [2023-01-28 12:08:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 259 transitions, 1884 flow [2023-01-28 12:08:39,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 259 transitions, 1776 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 12:08:39,219 INFO L231 Difference]: Finished difference. Result has 95 places, 125 transitions, 1210 flow [2023-01-28 12:08:39,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1210, PETRI_PLACES=95, PETRI_TRANSITIONS=125} [2023-01-28 12:08:39,221 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 74 predicate places. [2023-01-28 12:08:39,221 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 125 transitions, 1210 flow [2023-01-28 12:08:39,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 108.16666666666667) internal successors, (1947), 18 states have internal predecessors, (1947), 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) [2023-01-28 12:08:39,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:08:39,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:08:39,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 12:08:39,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:08:39,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:08:39,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:08:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash -763425186, now seen corresponding path program 1 times [2023-01-28 12:08:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:08:39,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730286069] [2023-01-28 12:08:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:08:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:08:39,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:08:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730286069] [2023-01-28 12:08:39,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730286069] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:08:39,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308182142] [2023-01-28 12:08:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:08:39,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:08:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:08:39,750 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) [2023-01-28 12:08:39,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 12:08:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:08:39,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-28 12:08:39,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:08:40,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:08:40,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:08:40,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:08:40,670 INFO L321 Elim1Store]: treesize reduction 74, result has 14.9 percent of original size [2023-01-28 12:08:40,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 301 treesize of output 212 [2023-01-28 12:08:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:08:40,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:08:42,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:08:42,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 250 treesize of output 154 [2023-01-28 12:08:42,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:08:42,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 934 treesize of output 838 [2023-01-28 12:08:42,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:08:42,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 209 treesize of output 149 [2023-01-28 12:08:42,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:08:42,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 154 [2023-01-28 12:08:43,193 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 12:08:43,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 438 treesize of output 1 [2023-01-28 12:08:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:08:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308182142] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:08:43,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:08:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 23 [2023-01-28 12:08:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306838779] [2023-01-28 12:08:43,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:08:43,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 12:08:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:08:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 12:08:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=374, Unknown=11, NotChecked=0, Total=506 [2023-01-28 12:08:43,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 415 [2023-01-28 12:08:43,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 125 transitions, 1210 flow. Second operand has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 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) [2023-01-28 12:08:43,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:08:43,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 415 [2023-01-28 12:08:43,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:08:49,659 WARN L222 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:09:06,721 WARN L222 SmtUtils]: Spent 12.47s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:09:08,470 INFO L130 PetriNetUnfolder]: 681/1278 cut-off events. [2023-01-28 12:09:08,470 INFO L131 PetriNetUnfolder]: For 7461/7461 co-relation queries the response was YES. [2023-01-28 12:09:08,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 1278 events. 681/1278 cut-off events. For 7461/7461 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7096 event pairs, 68 based on Foata normal form. 13/1289 useless extension candidates. Maximal degree in co-relation 6279. Up to 421 conditions per place. [2023-01-28 12:09:08,494 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 122 selfloop transitions, 116 changer transitions 36/274 dead transitions. [2023-01-28 12:09:08,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 274 transitions, 2760 flow [2023-01-28 12:09:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 12:09:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 12:09:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2465 transitions. [2023-01-28 12:09:08,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20481927710843373 [2023-01-28 12:09:08,501 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2465 transitions. [2023-01-28 12:09:08,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2465 transitions. [2023-01-28 12:09:08,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:09:08,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2465 transitions. [2023-01-28 12:09:08,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 85.0) internal successors, (2465), 29 states have internal predecessors, (2465), 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) [2023-01-28 12:09:08,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 415.0) internal successors, (12450), 30 states have internal predecessors, (12450), 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) [2023-01-28 12:09:08,533 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 415.0) internal successors, (12450), 30 states have internal predecessors, (12450), 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) [2023-01-28 12:09:08,533 INFO L175 Difference]: Start difference. First operand has 95 places, 125 transitions, 1210 flow. Second operand 29 states and 2465 transitions. [2023-01-28 12:09:08,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 274 transitions, 2760 flow [2023-01-28 12:09:08,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 274 transitions, 2452 flow, removed 131 selfloop flow, removed 7 redundant places. [2023-01-28 12:09:08,597 INFO L231 Difference]: Finished difference. Result has 120 places, 160 transitions, 1674 flow [2023-01-28 12:09:08,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1674, PETRI_PLACES=120, PETRI_TRANSITIONS=160} [2023-01-28 12:09:08,598 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 99 predicate places. [2023-01-28 12:09:08,598 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 160 transitions, 1674 flow [2023-01-28 12:09:08,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 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) [2023-01-28 12:09:08,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:09:08,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:09:08,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 12:09:08,805 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,SelfDestructingSolverStorable8 [2023-01-28 12:09:08,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:09:08,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:09:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608103, now seen corresponding path program 2 times [2023-01-28 12:09:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:09:08,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908928708] [2023-01-28 12:09:08,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:09:08,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:09:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:09:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:09:09,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:09:09,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908928708] [2023-01-28 12:09:09,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908928708] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:09:09,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763033356] [2023-01-28 12:09:09,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:09:09,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:09:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:09:09,057 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) [2023-01-28 12:09:09,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 12:09:09,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:09:09,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:09:09,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 12:09:09,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:09:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:09:09,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:09:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:09:09,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763033356] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:09:09,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:09:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 12:09:09,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061994616] [2023-01-28 12:09:09,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:09:09,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 12:09:09,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:09:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 12:09:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-28 12:09:09,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-28 12:09:09,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 160 transitions, 1674 flow. Second operand has 12 states, 12 states have (on average 154.33333333333334) internal successors, (1852), 12 states have internal predecessors, (1852), 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) [2023-01-28 12:09:09,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:09:09,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-28 12:09:09,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:09:10,263 INFO L130 PetriNetUnfolder]: 715/1334 cut-off events. [2023-01-28 12:09:10,263 INFO L131 PetriNetUnfolder]: For 9184/9184 co-relation queries the response was YES. [2023-01-28 12:09:10,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1334 events. 715/1334 cut-off events. For 9184/9184 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7403 event pairs, 260 based on Foata normal form. 24/1357 useless extension candidates. Maximal degree in co-relation 6772. Up to 1097 conditions per place. [2023-01-28 12:09:10,272 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 153 selfloop transitions, 64 changer transitions 3/220 dead transitions. [2023-01-28 12:09:10,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 220 transitions, 2616 flow [2023-01-28 12:09:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 12:09:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 12:09:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1746 transitions. [2023-01-28 12:09:10,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38247535596933185 [2023-01-28 12:09:10,289 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1746 transitions. [2023-01-28 12:09:10,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1746 transitions. [2023-01-28 12:09:10,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:09:10,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1746 transitions. [2023-01-28 12:09:10,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.72727272727272) internal successors, (1746), 11 states have internal predecessors, (1746), 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) [2023-01-28 12:09:10,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 415.0) internal successors, (4980), 12 states have internal predecessors, (4980), 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) [2023-01-28 12:09:10,297 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 415.0) internal successors, (4980), 12 states have internal predecessors, (4980), 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) [2023-01-28 12:09:10,298 INFO L175 Difference]: Start difference. First operand has 120 places, 160 transitions, 1674 flow. Second operand 11 states and 1746 transitions. [2023-01-28 12:09:10,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 220 transitions, 2616 flow [2023-01-28 12:09:10,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 220 transitions, 2335 flow, removed 89 selfloop flow, removed 12 redundant places. [2023-01-28 12:09:10,368 INFO L231 Difference]: Finished difference. Result has 119 places, 188 transitions, 1999 flow [2023-01-28 12:09:10,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1999, PETRI_PLACES=119, PETRI_TRANSITIONS=188} [2023-01-28 12:09:10,370 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 98 predicate places. [2023-01-28 12:09:10,370 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 188 transitions, 1999 flow [2023-01-28 12:09:10,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.33333333333334) internal successors, (1852), 12 states have internal predecessors, (1852), 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) [2023-01-28 12:09:10,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:09:10,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:09:10,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 12:09:10,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:09:10,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:09:10,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:09:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1315904287, now seen corresponding path program 3 times [2023-01-28 12:09:10,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:09:10,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470785501] [2023-01-28 12:09:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:09:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:09:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:09:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:09:10,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:09:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470785501] [2023-01-28 12:09:10,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470785501] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:09:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202391785] [2023-01-28 12:09:10,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:09:10,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:09:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:09:10,860 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) [2023-01-28 12:09:10,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 12:09:10,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:09:10,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:09:10,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 12:09:10,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:09:11,455 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 12:09:11,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 168 [2023-01-28 12:09:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:09:11,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:09:12,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:09:12,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 148 [2023-01-28 12:09:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:09:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202391785] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:09:35,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:09:35,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-28 12:09:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791532406] [2023-01-28 12:09:35,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:09:35,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 12:09:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:09:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 12:09:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-01-28 12:09:35,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 12:09:35,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 188 transitions, 1999 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 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) [2023-01-28 12:09:35,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:09:35,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 12:09:35,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:09:38,403 INFO L130 PetriNetUnfolder]: 823/1530 cut-off events. [2023-01-28 12:09:38,403 INFO L131 PetriNetUnfolder]: For 10511/10511 co-relation queries the response was YES. [2023-01-28 12:09:38,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 1530 events. 823/1530 cut-off events. For 10511/10511 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8744 event pairs, 155 based on Foata normal form. 12/1541 useless extension candidates. Maximal degree in co-relation 8388. Up to 1102 conditions per place. [2023-01-28 12:09:38,425 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 182 selfloop transitions, 79 changer transitions 11/272 dead transitions. [2023-01-28 12:09:38,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 272 transitions, 3146 flow [2023-01-28 12:09:38,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:09:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:09:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2670 transitions. [2023-01-28 12:09:38,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2680722891566265 [2023-01-28 12:09:38,431 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2670 transitions. [2023-01-28 12:09:38,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2670 transitions. [2023-01-28 12:09:38,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:09:38,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2670 transitions. [2023-01-28 12:09:38,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 111.25) internal successors, (2670), 24 states have internal predecessors, (2670), 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) [2023-01-28 12:09:38,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 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) [2023-01-28 12:09:38,446 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 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) [2023-01-28 12:09:38,446 INFO L175 Difference]: Start difference. First operand has 119 places, 188 transitions, 1999 flow. Second operand 24 states and 2670 transitions. [2023-01-28 12:09:38,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 272 transitions, 3146 flow [2023-01-28 12:09:38,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 272 transitions, 2957 flow, removed 88 selfloop flow, removed 2 redundant places. [2023-01-28 12:09:38,537 INFO L231 Difference]: Finished difference. Result has 144 places, 207 transitions, 2300 flow [2023-01-28 12:09:38,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2300, PETRI_PLACES=144, PETRI_TRANSITIONS=207} [2023-01-28 12:09:38,538 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 123 predicate places. [2023-01-28 12:09:38,538 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 207 transitions, 2300 flow [2023-01-28 12:09:38,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 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) [2023-01-28 12:09:38,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:09:38,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:09:38,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 12:09:38,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:09:38,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:09:38,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:09:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash -858716135, now seen corresponding path program 4 times [2023-01-28 12:09:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:09:38,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994141706] [2023-01-28 12:09:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:09:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:09:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:09:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:09:38,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:09:38,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994141706] [2023-01-28 12:09:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994141706] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:09:38,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645576878] [2023-01-28 12:09:38,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:09:38,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:09:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:09:38,974 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) [2023-01-28 12:09:39,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 12:09:39,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:09:39,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:09:39,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 12:09:39,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:09:39,644 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 12:09:39,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2023-01-28 12:09:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:09:39,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:09:39,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:09:39,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 230 treesize of output 230 [2023-01-28 12:10:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645576878] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:03,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:03,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-28 12:10:03,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099751217] [2023-01-28 12:10:03,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:03,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 12:10:03,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:03,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 12:10:03,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-01-28 12:10:03,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 12:10:03,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 207 transitions, 2300 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 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) [2023-01-28 12:10:03,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:03,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 12:10:03,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:04,596 INFO L130 PetriNetUnfolder]: 1162/2218 cut-off events. [2023-01-28 12:10:04,596 INFO L131 PetriNetUnfolder]: For 14660/14660 co-relation queries the response was YES. [2023-01-28 12:10:04,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12156 conditions, 2218 events. 1162/2218 cut-off events. For 14660/14660 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 14515 event pairs, 44 based on Foata normal form. 8/2225 useless extension candidates. Maximal degree in co-relation 11947. Up to 1107 conditions per place. [2023-01-28 12:10:04,610 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 193 selfloop transitions, 179 changer transitions 31/403 dead transitions. [2023-01-28 12:10:04,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 403 transitions, 4828 flow [2023-01-28 12:10:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-28 12:10:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-28 12:10:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3008 transitions. [2023-01-28 12:10:04,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2684515841142347 [2023-01-28 12:10:04,614 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3008 transitions. [2023-01-28 12:10:04,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3008 transitions. [2023-01-28 12:10:04,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:04,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3008 transitions. [2023-01-28 12:10:04,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 111.4074074074074) internal successors, (3008), 27 states have internal predecessors, (3008), 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) [2023-01-28 12:10:04,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 415.0) internal successors, (11620), 28 states have internal predecessors, (11620), 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) [2023-01-28 12:10:04,626 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 415.0) internal successors, (11620), 28 states have internal predecessors, (11620), 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) [2023-01-28 12:10:04,626 INFO L175 Difference]: Start difference. First operand has 144 places, 207 transitions, 2300 flow. Second operand 27 states and 3008 transitions. [2023-01-28 12:10:04,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 403 transitions, 4828 flow [2023-01-28 12:10:04,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 403 transitions, 4716 flow, removed 11 selfloop flow, removed 15 redundant places. [2023-01-28 12:10:04,679 INFO L231 Difference]: Finished difference. Result has 167 places, 290 transitions, 3841 flow [2023-01-28 12:10:04,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3841, PETRI_PLACES=167, PETRI_TRANSITIONS=290} [2023-01-28 12:10:04,680 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 146 predicate places. [2023-01-28 12:10:04,680 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 290 transitions, 3841 flow [2023-01-28 12:10:04,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 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) [2023-01-28 12:10:04,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:04,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:04,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:10:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 12:10:04,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:04,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash -27525413, now seen corresponding path program 5 times [2023-01-28 12:10:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576126219] [2023-01-28 12:10:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:10:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576126219] [2023-01-28 12:10:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576126219] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695563917] [2023-01-28 12:10:05,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:10:05,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:05,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:05,047 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) [2023-01-28 12:10:05,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 12:10:05,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:10:05,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:10:05,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 44 conjunts are in the unsatisfiable core [2023-01-28 12:10:05,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:05,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:10:05,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:10:05,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:10:05,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:10:05,497 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 12:10:05,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 152 [2023-01-28 12:10:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:05,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:06,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:06,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 89 [2023-01-28 12:10:06,228 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:06,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 808 treesize of output 688 [2023-01-28 12:10:06,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:06,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 148 [2023-01-28 12:10:06,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:06,273 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 81 [2023-01-28 12:10:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695563917] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:06,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-01-28 12:10:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998409532] [2023-01-28 12:10:06,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 12:10:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 12:10:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=381, Unknown=2, NotChecked=0, Total=462 [2023-01-28 12:10:06,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 415 [2023-01-28 12:10:06,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 290 transitions, 3841 flow. Second operand has 22 states, 22 states have (on average 101.18181818181819) internal successors, (2226), 22 states have internal predecessors, (2226), 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) [2023-01-28 12:10:06,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:06,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 415 [2023-01-28 12:10:06,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:16,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 12:10:22,608 WARN L222 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:10:38,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 12:10:39,206 INFO L130 PetriNetUnfolder]: 1340/2621 cut-off events. [2023-01-28 12:10:39,206 INFO L131 PetriNetUnfolder]: For 27203/27203 co-relation queries the response was YES. [2023-01-28 12:10:39,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 2621 events. 1340/2621 cut-off events. For 27203/27203 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 18013 event pairs, 105 based on Foata normal form. 36/2656 useless extension candidates. Maximal degree in co-relation 16504. Up to 1041 conditions per place. [2023-01-28 12:10:39,223 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 184 selfloop transitions, 141 changer transitions 232/557 dead transitions. [2023-01-28 12:10:39,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 557 transitions, 7621 flow [2023-01-28 12:10:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-28 12:10:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-28 12:10:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4419 transitions. [2023-01-28 12:10:39,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2535283993115318 [2023-01-28 12:10:39,229 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4419 transitions. [2023-01-28 12:10:39,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4419 transitions. [2023-01-28 12:10:39,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:39,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4419 transitions. [2023-01-28 12:10:39,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 105.21428571428571) internal successors, (4419), 42 states have internal predecessors, (4419), 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) [2023-01-28 12:10:39,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 415.0) internal successors, (17845), 43 states have internal predecessors, (17845), 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) [2023-01-28 12:10:39,243 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 415.0) internal successors, (17845), 43 states have internal predecessors, (17845), 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) [2023-01-28 12:10:39,243 INFO L175 Difference]: Start difference. First operand has 167 places, 290 transitions, 3841 flow. Second operand 42 states and 4419 transitions. [2023-01-28 12:10:39,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 557 transitions, 7621 flow [2023-01-28 12:10:39,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 557 transitions, 7091 flow, removed 167 selfloop flow, removed 13 redundant places. [2023-01-28 12:10:39,385 INFO L231 Difference]: Finished difference. Result has 207 places, 204 transitions, 2873 flow [2023-01-28 12:10:39,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=3518, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2873, PETRI_PLACES=207, PETRI_TRANSITIONS=204} [2023-01-28 12:10:39,386 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 186 predicate places. [2023-01-28 12:10:39,386 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 204 transitions, 2873 flow [2023-01-28 12:10:39,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 101.18181818181819) internal successors, (2226), 22 states have internal predecessors, (2226), 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) [2023-01-28 12:10:39,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:39,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:39,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 12:10:39,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:39,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:39,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash 545860189, now seen corresponding path program 6 times [2023-01-28 12:10:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:39,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964491554] [2023-01-28 12:10:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:39,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:10:39,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:39,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964491554] [2023-01-28 12:10:39,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964491554] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:39,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122385586] [2023-01-28 12:10:39,725 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:10:39,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:39,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:39,726 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) [2023-01-28 12:10:39,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 12:10:39,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 12:10:39,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:10:39,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 12:10:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:40,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:40,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-01-28 12:10:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:10:40,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:40,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:40,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 230 treesize of output 230 [2023-01-28 12:10:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:10:40,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122385586] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:40,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:40,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2023-01-28 12:10:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930248644] [2023-01-28 12:10:40,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:40,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:10:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:10:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:10:40,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 415 [2023-01-28 12:10:40,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 204 transitions, 2873 flow. Second operand has 17 states, 17 states have (on average 121.17647058823529) internal successors, (2060), 17 states have internal predecessors, (2060), 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) [2023-01-28 12:10:40,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:40,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 415 [2023-01-28 12:10:40,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:41,200 INFO L130 PetriNetUnfolder]: 617/1357 cut-off events. [2023-01-28 12:10:41,200 INFO L131 PetriNetUnfolder]: For 17023/17023 co-relation queries the response was YES. [2023-01-28 12:10:41,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1357 events. 617/1357 cut-off events. For 17023/17023 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8865 event pairs, 22 based on Foata normal form. 9/1366 useless extension candidates. Maximal degree in co-relation 9100. Up to 591 conditions per place. [2023-01-28 12:10:41,209 INFO L137 encePairwiseOnDemand]: 407/415 looper letters, 171 selfloop transitions, 122 changer transitions 11/304 dead transitions. [2023-01-28 12:10:41,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 304 transitions, 4696 flow [2023-01-28 12:10:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 12:10:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 12:10:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1998 transitions. [2023-01-28 12:10:41,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3009036144578313 [2023-01-28 12:10:41,215 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1998 transitions. [2023-01-28 12:10:41,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1998 transitions. [2023-01-28 12:10:41,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:41,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1998 transitions. [2023-01-28 12:10:41,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 124.875) internal successors, (1998), 16 states have internal predecessors, (1998), 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) [2023-01-28 12:10:41,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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) [2023-01-28 12:10:41,220 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 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) [2023-01-28 12:10:41,220 INFO L175 Difference]: Start difference. First operand has 207 places, 204 transitions, 2873 flow. Second operand 16 states and 1998 transitions. [2023-01-28 12:10:41,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 304 transitions, 4696 flow [2023-01-28 12:10:41,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 304 transitions, 3832 flow, removed 323 selfloop flow, removed 32 redundant places. [2023-01-28 12:10:41,282 INFO L231 Difference]: Finished difference. Result has 180 places, 230 transitions, 3091 flow [2023-01-28 12:10:41,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3091, PETRI_PLACES=180, PETRI_TRANSITIONS=230} [2023-01-28 12:10:41,282 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 159 predicate places. [2023-01-28 12:10:41,282 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 230 transitions, 3091 flow [2023-01-28 12:10:41,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.17647058823529) internal successors, (2060), 17 states have internal predecessors, (2060), 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) [2023-01-28 12:10:41,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:41,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:41,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 12:10:41,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:41,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:41,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash 79837471, now seen corresponding path program 7 times [2023-01-28 12:10:41,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:41,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929454246] [2023-01-28 12:10:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:41,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:10:41,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:41,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929454246] [2023-01-28 12:10:41,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929454246] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:41,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675555607] [2023-01-28 12:10:41,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:10:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:41,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:41,612 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) [2023-01-28 12:10:41,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 12:10:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:41,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 12:10:41,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:41,955 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 12:10:41,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 168 [2023-01-28 12:10:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:42,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:42,773 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:42,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 148 [2023-01-28 12:10:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:43,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675555607] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:43,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:43,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-28 12:10:43,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26307364] [2023-01-28 12:10:43,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:43,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 12:10:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 12:10:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-01-28 12:10:43,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-28 12:10:43,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 230 transitions, 3091 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 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) [2023-01-28 12:10:43,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:43,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-28 12:10:43,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:44,856 INFO L130 PetriNetUnfolder]: 603/1318 cut-off events. [2023-01-28 12:10:44,857 INFO L131 PetriNetUnfolder]: For 11795/11795 co-relation queries the response was YES. [2023-01-28 12:10:44,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8178 conditions, 1318 events. 603/1318 cut-off events. For 11795/11795 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8488 event pairs, 49 based on Foata normal form. 9/1327 useless extension candidates. Maximal degree in co-relation 8116. Up to 1057 conditions per place. [2023-01-28 12:10:44,864 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 189 selfloop transitions, 77 changer transitions 8/274 dead transitions. [2023-01-28 12:10:44,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 274 transitions, 3864 flow [2023-01-28 12:10:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 12:10:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 12:10:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2111 transitions. [2023-01-28 12:10:44,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26772352568167407 [2023-01-28 12:10:44,870 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2111 transitions. [2023-01-28 12:10:44,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2111 transitions. [2023-01-28 12:10:44,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:44,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2111 transitions. [2023-01-28 12:10:44,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 111.10526315789474) internal successors, (2111), 19 states have internal predecessors, (2111), 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) [2023-01-28 12:10:44,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 415.0) internal successors, (8300), 20 states have internal predecessors, (8300), 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) [2023-01-28 12:10:44,876 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 415.0) internal successors, (8300), 20 states have internal predecessors, (8300), 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) [2023-01-28 12:10:44,876 INFO L175 Difference]: Start difference. First operand has 180 places, 230 transitions, 3091 flow. Second operand 19 states and 2111 transitions. [2023-01-28 12:10:44,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 274 transitions, 3864 flow [2023-01-28 12:10:44,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 274 transitions, 3599 flow, removed 74 selfloop flow, removed 9 redundant places. [2023-01-28 12:10:44,924 INFO L231 Difference]: Finished difference. Result has 188 places, 229 transitions, 3009 flow [2023-01-28 12:10:44,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3009, PETRI_PLACES=188, PETRI_TRANSITIONS=229} [2023-01-28 12:10:44,925 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 167 predicate places. [2023-01-28 12:10:44,925 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 229 transitions, 3009 flow [2023-01-28 12:10:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 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) [2023-01-28 12:10:44,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:44,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:44,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 12:10:45,126 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,SelfDestructingSolverStorable14 [2023-01-28 12:10:45,126 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:45,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash -755230754, now seen corresponding path program 1 times [2023-01-28 12:10:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135327341] [2023-01-28 12:10:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:10:45,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135327341] [2023-01-28 12:10:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135327341] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413431900] [2023-01-28 12:10:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:45,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:45,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:45,272 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:10:45,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 12:10:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:45,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 44 conjunts are in the unsatisfiable core [2023-01-28 12:10:45,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:45,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-01-28 12:10:45,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:10:45,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:10:45,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:10:45,718 INFO L321 Elim1Store]: treesize reduction 83, result has 10.8 percent of original size [2023-01-28 12:10:45,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 347 treesize of output 215 [2023-01-28 12:10:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:45,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:46,533 WARN L839 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_387 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_387) c_~f~0.base))) (let ((.cse2 (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (let ((.cse1 (select .cse0 (+ c_~f~0.offset (* .cse2 4))))) (or (= (select .cse0 (+ (* 4 .cse1) c_~f~0.offset)) (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset))) (<= c_~size~0 .cse2) (< .cse2 0) (< .cse1 0) (<= c_~size~0 .cse1)))))) is different from false [2023-01-28 12:10:46,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:46,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 168 [2023-01-28 12:10:46,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:46,651 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 466 treesize of output 466 [2023-01-28 12:10:46,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:46,707 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 386 treesize of output 346 [2023-01-28 12:10:46,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:46,754 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 181 [2023-01-28 12:10:49,281 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 12:10:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:10:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413431900] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:49,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:49,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2023-01-28 12:10:49,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034234486] [2023-01-28 12:10:49,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 12:10:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 12:10:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=282, Unknown=1, NotChecked=34, Total=380 [2023-01-28 12:10:49,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 415 [2023-01-28 12:10:49,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 229 transitions, 3009 flow. Second operand has 20 states, 20 states have (on average 81.55) internal successors, (1631), 20 states have internal predecessors, (1631), 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) [2023-01-28 12:10:49,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:49,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 415 [2023-01-28 12:10:49,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:50,587 INFO L130 PetriNetUnfolder]: 608/1326 cut-off events. [2023-01-28 12:10:50,587 INFO L131 PetriNetUnfolder]: For 11486/11486 co-relation queries the response was YES. [2023-01-28 12:10:50,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 1326 events. 608/1326 cut-off events. For 11486/11486 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8578 event pairs, 70 based on Foata normal form. 17/1343 useless extension candidates. Maximal degree in co-relation 7999. Up to 877 conditions per place. [2023-01-28 12:10:50,595 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 187 selfloop transitions, 54 changer transitions 50/291 dead transitions. [2023-01-28 12:10:50,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 291 transitions, 3925 flow [2023-01-28 12:10:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:10:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:10:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1941 transitions. [2023-01-28 12:10:50,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20335254059717128 [2023-01-28 12:10:50,598 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1941 transitions. [2023-01-28 12:10:50,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1941 transitions. [2023-01-28 12:10:50,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:50,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1941 transitions. [2023-01-28 12:10:50,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 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) [2023-01-28 12:10:50,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 415.0) internal successors, (9960), 24 states have internal predecessors, (9960), 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) [2023-01-28 12:10:50,604 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 415.0) internal successors, (9960), 24 states have internal predecessors, (9960), 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) [2023-01-28 12:10:50,604 INFO L175 Difference]: Start difference. First operand has 188 places, 229 transitions, 3009 flow. Second operand 23 states and 1941 transitions. [2023-01-28 12:10:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 291 transitions, 3925 flow [2023-01-28 12:10:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 291 transitions, 3838 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-01-28 12:10:50,646 INFO L231 Difference]: Finished difference. Result has 200 places, 204 transitions, 2756 flow [2023-01-28 12:10:50,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2756, PETRI_PLACES=200, PETRI_TRANSITIONS=204} [2023-01-28 12:10:50,646 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 179 predicate places. [2023-01-28 12:10:50,647 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 204 transitions, 2756 flow [2023-01-28 12:10:50,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 81.55) internal successors, (1631), 20 states have internal predecessors, (1631), 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) [2023-01-28 12:10:50,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:50,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:50,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 12:10:50,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 12:10:50,851 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:50,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash -266355903, now seen corresponding path program 8 times [2023-01-28 12:10:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206819651] [2023-01-28 12:10:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:10:50,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:50,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206819651] [2023-01-28 12:10:50,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206819651] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:50,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345199551] [2023-01-28 12:10:50,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:10:50,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:50,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:50,999 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:10:51,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 12:10:51,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:10:51,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:10:51,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 12:10:51,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:51,353 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 12:10:51,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 165 [2023-01-28 12:10:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:10:51,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:52,087 INFO L321 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-01-28 12:10:52,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 42 [2023-01-28 12:10:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:10:52,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345199551] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:10:52,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:10:52,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2023-01-28 12:10:52,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977819963] [2023-01-28 12:10:52,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:10:52,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:10:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:10:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:10:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-01-28 12:10:52,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 415 [2023-01-28 12:10:52,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 204 transitions, 2756 flow. Second operand has 17 states, 17 states have (on average 121.23529411764706) internal successors, (2061), 17 states have internal predecessors, (2061), 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) [2023-01-28 12:10:52,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:10:52,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 415 [2023-01-28 12:10:52,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:10:55,835 INFO L130 PetriNetUnfolder]: 811/1672 cut-off events. [2023-01-28 12:10:55,836 INFO L131 PetriNetUnfolder]: For 17688/17688 co-relation queries the response was YES. [2023-01-28 12:10:55,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 1672 events. 811/1672 cut-off events. For 17688/17688 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10840 event pairs, 71 based on Foata normal form. 12/1684 useless extension candidates. Maximal degree in co-relation 10731. Up to 508 conditions per place. [2023-01-28 12:10:55,847 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 219 selfloop transitions, 173 changer transitions 17/409 dead transitions. [2023-01-28 12:10:55,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 409 transitions, 5455 flow [2023-01-28 12:10:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 12:10:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 12:10:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3784 transitions. [2023-01-28 12:10:55,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039357429718875 [2023-01-28 12:10:55,850 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3784 transitions. [2023-01-28 12:10:55,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3784 transitions. [2023-01-28 12:10:55,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:10:55,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3784 transitions. [2023-01-28 12:10:55,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 126.13333333333334) internal successors, (3784), 30 states have internal predecessors, (3784), 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) [2023-01-28 12:10:55,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 415.0) internal successors, (12865), 31 states have internal predecessors, (12865), 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) [2023-01-28 12:10:55,860 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 415.0) internal successors, (12865), 31 states have internal predecessors, (12865), 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) [2023-01-28 12:10:55,860 INFO L175 Difference]: Start difference. First operand has 200 places, 204 transitions, 2756 flow. Second operand 30 states and 3784 transitions. [2023-01-28 12:10:55,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 409 transitions, 5455 flow [2023-01-28 12:10:55,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 409 transitions, 4943 flow, removed 55 selfloop flow, removed 25 redundant places. [2023-01-28 12:10:55,926 INFO L231 Difference]: Finished difference. Result has 203 places, 275 transitions, 4049 flow [2023-01-28 12:10:55,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4049, PETRI_PLACES=203, PETRI_TRANSITIONS=275} [2023-01-28 12:10:55,926 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 182 predicate places. [2023-01-28 12:10:55,926 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 275 transitions, 4049 flow [2023-01-28 12:10:55,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.23529411764706) internal successors, (2061), 17 states have internal predecessors, (2061), 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) [2023-01-28 12:10:55,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:10:55,927 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:10:55,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 12:10:56,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 12:10:56,133 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:10:56,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:10:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1923795003, now seen corresponding path program 9 times [2023-01-28 12:10:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:10:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217905711] [2023-01-28 12:10:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:10:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:10:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:10:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:10:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:10:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217905711] [2023-01-28 12:10:56,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217905711] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:10:56,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638277984] [2023-01-28 12:10:56,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:10:56,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:10:56,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:10:56,264 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:10:56,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 12:10:56,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:10:56,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:10:56,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 12:10:56,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:10:56,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:56,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 173 [2023-01-28 12:10:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:10:56,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:10:57,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:10:57,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 139 [2023-01-28 12:17:28,014 WARN L222 SmtUtils]: Spent 6.32m on a formula simplification. DAG size of input: 5890 DAG size of output: 5339 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 12:22:55,631 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:22:55,660 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 [2023-01-28 12:22:55,869 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 12:22:55,871 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 12:22:55,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 12:22:56,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 12:22:56,071 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 30 for 727ms.. [2023-01-28 12:22:56,072 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 12:22:56,072 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 12:22:56,073 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1] [2023-01-28 12:22:56,075 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:22:56,075 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:22:56,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:22:56 BasicIcfg [2023-01-28 12:22:56,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:22:56,076 INFO L158 Benchmark]: Toolchain (without parser) took 874193.92ms. Allocated memory was 471.9MB in the beginning and 679.5MB in the end (delta: 207.6MB). Free memory was 423.2MB in the beginning and 340.7MB in the end (delta: 82.6MB). Peak memory consumption was 408.0MB. Max. memory is 16.0GB. [2023-01-28 12:22:56,076 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 325.1MB. Free memory is still 274.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:22:56,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.76ms. Allocated memory is still 471.9MB. Free memory was 423.2MB in the beginning and 411.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 12:22:56,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.19ms. Allocated memory is still 471.9MB. Free memory was 411.4MB in the beginning and 409.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:22:56,077 INFO L158 Benchmark]: Boogie Preprocessor took 44.02ms. Allocated memory is still 471.9MB. Free memory was 409.3MB in the beginning and 407.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:22:56,077 INFO L158 Benchmark]: RCFGBuilder took 752.67ms. Allocated memory is still 471.9MB. Free memory was 407.9MB in the beginning and 389.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 12:22:56,077 INFO L158 Benchmark]: TraceAbstraction took 872940.87ms. Allocated memory was 471.9MB in the beginning and 679.5MB in the end (delta: 207.6MB). Free memory was 389.0MB in the beginning and 340.7MB in the end (delta: 48.3MB). Peak memory consumption was 374.5MB. Max. memory is 16.0GB. [2023-01-28 12:22:56,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 325.1MB. Free memory is still 274.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 370.76ms. Allocated memory is still 471.9MB. Free memory was 423.2MB in the beginning and 411.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.19ms. Allocated memory is still 471.9MB. Free memory was 411.4MB in the beginning and 409.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.02ms. Allocated memory is still 471.9MB. Free memory was 409.3MB in the beginning and 407.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 752.67ms. Allocated memory is still 471.9MB. Free memory was 407.9MB in the beginning and 389.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 872940.87ms. Allocated memory was 471.9MB in the beginning and 679.5MB in the end (delta: 207.6MB). Free memory was 389.0MB in the beginning and 340.7MB in the end (delta: 48.3MB). Peak memory consumption was 374.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8s, 173 PlacesBefore, 21 PlacesAfterwards, 184 TransitionsBefore, 17 TransitionsAfterwards, 4092 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 32 ConcurrentYvCompositions, 15 ChoiceCompositions, 221 TotalNumberOfCompositions, 4038 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3920, independent: 3909, independent conditional: 0, independent unconditional: 3909, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2378, independent: 2373, independent conditional: 0, independent unconditional: 2373, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3920, independent: 1536, independent conditional: 0, independent unconditional: 1536, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 2378, unknown conditional: 0, unknown unconditional: 2378] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 30 for 727ms.. - TimeoutResultAtElement [Line: 94]: 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 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 30 for 727ms.. - TimeoutResultAtElement [Line: 93]: 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 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 30 for 727ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 263 locations, 3 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: 872.7s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 75.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 1494 SdHoareTripleChecker+Valid, 13.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1494 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 12.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 115 IncrementalHoareTripleChecker+Unchecked, 324 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6246 IncrementalHoareTripleChecker+Invalid, 6746 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 67 mSDtfsCounter, 6246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 680 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 363 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2943 ImplicationChecksByTransitivity, 61.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4049occurred in iteration=17, InterpolantAutomatonStates: 287, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 67.3s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 553 ConstructedInterpolants, 18 QuantifiedInterpolants, 10710 SizeOfPredicates, 268 NumberOfNonLiveVariables, 1643 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 30/75 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