/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:13:56,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:13:56,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:13:56,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:13:56,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:13:56,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:13:56,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:13:56,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:13:56,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:13:56,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:13:56,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:13:56,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:13:56,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:13:56,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:13:56,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:13:56,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:13:56,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:13:56,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:13:56,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:13:56,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:13:56,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:13:56,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:13:56,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:13:56,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:13:56,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:13:56,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:13:56,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:13:56,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:13:56,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:13:56,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:13:56,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:13:56,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:13:56,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:13:56,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:13:56,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:13:56,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:13:56,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:13:56,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:13:56,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:13:56,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:13:56,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:13:56,293 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-NoLbe.epf [2022-12-06 17:13:56,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:13:56,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:13:56,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:13:56,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:13:56,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:13:56,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:13:56,325 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:13:56,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:13:56,325 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:13:56,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:13:56,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:13:56,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:13:56,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:13:56,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:13:56,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:13:56,326 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:13:56,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:13:56,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:13:56,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:13:56,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:13:56,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:13:56,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:13:56,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:13:56,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:13:56,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:13:56,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:13:56,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:13:56,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:13:56,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:13:56,328 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:13:56,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:13:56,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:13:56,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:13:56,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:13:56,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:13:56,590 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:13:56,591 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:13:56,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-12-06 17:13:57,564 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:13:57,782 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:13:57,782 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-12-06 17:13:57,789 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dbeac57/a7e69454d74149749c28ba2aff966de6/FLAGedb6231e1 [2022-12-06 17:13:57,805 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dbeac57/a7e69454d74149749c28ba2aff966de6 [2022-12-06 17:13:57,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:13:57,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:13:57,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:13:57,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:13:57,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:13:57,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:13:57" (1/1) ... [2022-12-06 17:13:57,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a672cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:57, skipping insertion in model container [2022-12-06 17:13:57,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:13:57" (1/1) ... [2022-12-06 17:13:57,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:13:57,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:13:57,996 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2022-12-06 17:13:58,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:13:58,022 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:13:58,055 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2022-12-06 17:13:58,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:13:58,069 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:13:58,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58 WrapperNode [2022-12-06 17:13:58,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:13:58,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:13:58,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:13:58,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:13:58,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,128 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 282 [2022-12-06 17:13:58,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:13:58,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:13:58,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:13:58,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:13:58,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:13:58,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:13:58,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:13:58,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:13:58,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (1/1) ... [2022-12-06 17:13:58,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:13:58,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:13:58,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 17:13:58,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 17:13:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:13:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:13:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:13:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:13:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:13:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:13:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:13:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:13:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:13:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 17:13:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:13:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:13:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:13:58,236 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:13:58,327 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:13:58,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:13:58,713 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:13:58,732 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:13:58,733 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-06 17:13:58,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:13:58 BoogieIcfgContainer [2022-12-06 17:13:58,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:13:58,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:13:58,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:13:58,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:13:58,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:13:57" (1/3) ... [2022-12-06 17:13:58,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc24540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:13:58, skipping insertion in model container [2022-12-06 17:13:58,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:13:58" (2/3) ... [2022-12-06 17:13:58,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc24540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:13:58, skipping insertion in model container [2022-12-06 17:13:58,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:13:58" (3/3) ... [2022-12-06 17:13:58,746 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-12-06 17:13:58,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:13:58,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:13:58,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:13:58,865 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 17:13:58,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 331 transitions, 678 flow [2022-12-06 17:13:59,038 INFO L130 PetriNetUnfolder]: 28/329 cut-off events. [2022-12-06 17:13:59,038 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:13:59,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 329 events. 28/329 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 330 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 258. Up to 2 conditions per place. [2022-12-06 17:13:59,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 331 transitions, 678 flow [2022-12-06 17:13:59,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 321 transitions, 654 flow [2022-12-06 17:13:59,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:13:59,070 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;@419f361a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:13:59,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 17:13:59,157 INFO L130 PetriNetUnfolder]: 28/320 cut-off events. [2022-12-06 17:13:59,157 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 17:13:59,158 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:13:59,159 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:13:59,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:13:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:13:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash -729024585, now seen corresponding path program 1 times [2022-12-06 17:13:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:13:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085537510] [2022-12-06 17:13:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:13:59,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:13:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:13:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:13:59,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:13:59,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085537510] [2022-12-06 17:13:59,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085537510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:13:59,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:13:59,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:13:59,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637960081] [2022-12-06 17:13:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:13:59,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:13:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:13:59,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:13:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:13:59,626 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 331 [2022-12-06 17:13:59,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 321 transitions, 654 flow. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:13:59,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:13:59,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 331 [2022-12-06 17:13:59,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:13:59,733 INFO L130 PetriNetUnfolder]: 19/406 cut-off events. [2022-12-06 17:13:59,733 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-06 17:13:59,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 406 events. 19/406 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 952 event pairs, 5 based on Foata normal form. 26/399 useless extension candidates. Maximal degree in co-relation 256. Up to 22 conditions per place. [2022-12-06 17:13:59,739 INFO L137 encePairwiseOnDemand]: 307/331 looper letters, 11 selfloop transitions, 3 changer transitions 12/304 dead transitions. [2022-12-06 17:13:59,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 304 transitions, 651 flow [2022-12-06 17:13:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:13:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:13:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2022-12-06 17:13:59,754 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9405840886203424 [2022-12-06 17:13:59,759 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 2 predicate places. [2022-12-06 17:13:59,759 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 304 transitions, 651 flow [2022-12-06 17:13:59,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:13:59,760 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:13:59,761 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:13:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:13:59,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:13:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:13:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1026743543, now seen corresponding path program 1 times [2022-12-06 17:13:59,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:13:59,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874559394] [2022-12-06 17:13:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:13:59,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:13:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:13:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:13:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:13:59,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874559394] [2022-12-06 17:13:59,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874559394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:13:59,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:13:59,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:13:59,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094130187] [2022-12-06 17:13:59,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:13:59,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:13:59,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:13:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:13:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:13:59,920 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 331 [2022-12-06 17:13:59,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 304 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:13:59,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:13:59,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 331 [2022-12-06 17:13:59,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:00,018 INFO L130 PetriNetUnfolder]: 28/467 cut-off events. [2022-12-06 17:14:00,019 INFO L131 PetriNetUnfolder]: For 81/85 co-relation queries the response was YES. [2022-12-06 17:14:00,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 467 events. 28/467 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1210 event pairs, 10 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 284. Up to 35 conditions per place. [2022-12-06 17:14:00,021 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 12 selfloop transitions, 3 changer transitions 12/307 dead transitions. [2022-12-06 17:14:00,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 307 transitions, 692 flow [2022-12-06 17:14:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:14:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:14:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 912 transitions. [2022-12-06 17:14:00,025 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.918429003021148 [2022-12-06 17:14:00,025 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 4 predicate places. [2022-12-06 17:14:00,025 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 307 transitions, 692 flow [2022-12-06 17:14:00,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:00,027 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:00,028 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:00,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:14:00,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1075193957, now seen corresponding path program 1 times [2022-12-06 17:14:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:00,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382026197] [2022-12-06 17:14:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:00,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:14:00,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:00,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382026197] [2022-12-06 17:14:00,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382026197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:00,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:00,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 17:14:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751486501] [2022-12-06 17:14:00,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:00,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 17:14:00,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 17:14:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-06 17:14:00,410 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 331 [2022-12-06 17:14:00,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 307 transitions, 692 flow. Second operand has 8 states, 8 states have (on average 225.875) internal successors, (1807), 8 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:00,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:00,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 331 [2022-12-06 17:14:00,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:00,672 INFO L130 PetriNetUnfolder]: 47/599 cut-off events. [2022-12-06 17:14:00,672 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-06 17:14:00,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 599 events. 47/599 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2125 event pairs, 23 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 470. Up to 111 conditions per place. [2022-12-06 17:14:00,677 INFO L137 encePairwiseOnDemand]: 319/331 looper letters, 76 selfloop transitions, 11 changer transitions 12/311 dead transitions. [2022-12-06 17:14:00,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 311 transitions, 898 flow [2022-12-06 17:14:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:14:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:14:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2051 transitions. [2022-12-06 17:14:00,681 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6884860691507217 [2022-12-06 17:14:00,682 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 12 predicate places. [2022-12-06 17:14:00,682 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 311 transitions, 898 flow [2022-12-06 17:14:00,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 225.875) internal successors, (1807), 8 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:00,683 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:00,683 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:00,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:14:00,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:00,684 INFO L85 PathProgramCache]: Analyzing trace with hash 987775366, now seen corresponding path program 1 times [2022-12-06 17:14:00,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:00,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405851680] [2022-12-06 17:14:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:14:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405851680] [2022-12-06 17:14:00,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405851680] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:14:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473213942] [2022-12-06 17:14:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:00,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:14:00,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:14:00,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:14:00,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:14:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:01,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:14:01,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:14:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:14:01,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:14:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:14:01,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473213942] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:14:01,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:14:01,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-06 17:14:01,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783026846] [2022-12-06 17:14:01,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:01,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 17:14:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 17:14:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:01,495 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 331 [2022-12-06 17:14:01,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 311 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 255.11111111111111) internal successors, (2296), 9 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:01,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:01,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 331 [2022-12-06 17:14:01,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:01,704 INFO L130 PetriNetUnfolder]: 47/600 cut-off events. [2022-12-06 17:14:01,704 INFO L131 PetriNetUnfolder]: For 324/336 co-relation queries the response was YES. [2022-12-06 17:14:01,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 600 events. 47/600 cut-off events. For 324/336 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2095 event pairs, 23 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 508. Up to 111 conditions per place. [2022-12-06 17:14:01,707 INFO L137 encePairwiseOnDemand]: 315/331 looper letters, 52 selfloop transitions, 15 changer transitions 12/312 dead transitions. [2022-12-06 17:14:01,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 312 transitions, 1034 flow [2022-12-06 17:14:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-06 17:14:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-06 17:14:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2813 transitions. [2022-12-06 17:14:01,712 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7725899478165339 [2022-12-06 17:14:01,713 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 22 predicate places. [2022-12-06 17:14:01,713 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 312 transitions, 1034 flow [2022-12-06 17:14:01,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 255.11111111111111) internal successors, (2296), 9 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:01,715 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:01,715 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:01,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 17:14:01,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:14:01,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1677526078, now seen corresponding path program 1 times [2022-12-06 17:14:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:01,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673558934] [2022-12-06 17:14:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:01,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:14:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:02,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673558934] [2022-12-06 17:14:02,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673558934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:02,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:02,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 17:14:02,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345869009] [2022-12-06 17:14:02,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:02,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 17:14:02,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:02,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 17:14:02,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-06 17:14:02,180 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 331 [2022-12-06 17:14:02,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 312 transitions, 1034 flow. Second operand has 8 states, 8 states have (on average 226.375) internal successors, (1811), 8 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:02,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:02,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 331 [2022-12-06 17:14:02,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:02,349 INFO L130 PetriNetUnfolder]: 71/659 cut-off events. [2022-12-06 17:14:02,349 INFO L131 PetriNetUnfolder]: For 665/784 co-relation queries the response was YES. [2022-12-06 17:14:02,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 659 events. 71/659 cut-off events. For 665/784 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2611 event pairs, 45 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 654. Up to 130 conditions per place. [2022-12-06 17:14:02,353 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 82 selfloop transitions, 9 changer transitions 12/316 dead transitions. [2022-12-06 17:14:02,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 316 transitions, 1264 flow [2022-12-06 17:14:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 17:14:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 17:14:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1834 transitions. [2022-12-06 17:14:02,357 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6925981873111783 [2022-12-06 17:14:02,357 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 29 predicate places. [2022-12-06 17:14:02,358 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 316 transitions, 1264 flow [2022-12-06 17:14:02,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 226.375) internal successors, (1811), 8 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:02,359 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:02,359 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:02,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:14:02,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:02,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1599503721, now seen corresponding path program 1 times [2022-12-06 17:14:02,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:02,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463905388] [2022-12-06 17:14:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:02,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:14:02,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463905388] [2022-12-06 17:14:02,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463905388] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:14:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43793216] [2022-12-06 17:14:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:02,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:14:02,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:14:02,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:14:02,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:14:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:02,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:14:02,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:14:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:14:02,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:14:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:14:02,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43793216] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:14:02,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:14:02,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 16 [2022-12-06 17:14:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693685760] [2022-12-06 17:14:02,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:02,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-06 17:14:02,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-06 17:14:02,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:02,961 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 331 [2022-12-06 17:14:02,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 316 transitions, 1264 flow. Second operand has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:02,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:02,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 331 [2022-12-06 17:14:02,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:03,171 INFO L130 PetriNetUnfolder]: 71/662 cut-off events. [2022-12-06 17:14:03,171 INFO L131 PetriNetUnfolder]: For 973/1128 co-relation queries the response was YES. [2022-12-06 17:14:03,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 662 events. 71/662 cut-off events. For 973/1128 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2609 event pairs, 48 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 704. Up to 130 conditions per place. [2022-12-06 17:14:03,176 INFO L137 encePairwiseOnDemand]: 315/331 looper letters, 56 selfloop transitions, 16 changer transitions 12/317 dead transitions. [2022-12-06 17:14:03,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 317 transitions, 1412 flow [2022-12-06 17:14:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-06 17:14:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-06 17:14:03,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3063 transitions. [2022-12-06 17:14:03,181 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7711480362537765 [2022-12-06 17:14:03,181 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 40 predicate places. [2022-12-06 17:14:03,181 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 317 transitions, 1412 flow [2022-12-06 17:14:03,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:03,183 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:03,183 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:03,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 17:14:03,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-06 17:14:03,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:03,389 INFO L85 PathProgramCache]: Analyzing trace with hash -423982751, now seen corresponding path program 1 times [2022-12-06 17:14:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:03,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415036469] [2022-12-06 17:14:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:03,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:04,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415036469] [2022-12-06 17:14:04,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415036469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:04,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:04,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969674715] [2022-12-06 17:14:04,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:04,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:04,798 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:04,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 317 transitions, 1412 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:04,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:04,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:04,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:08,431 INFO L130 PetriNetUnfolder]: 1861/6889 cut-off events. [2022-12-06 17:14:08,431 INFO L131 PetriNetUnfolder]: For 6592/6627 co-relation queries the response was YES. [2022-12-06 17:14:08,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13882 conditions, 6889 events. 1861/6889 cut-off events. For 6592/6627 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 67736 event pairs, 610 based on Foata normal form. 0/6439 useless extension candidates. Maximal degree in co-relation 11577. Up to 1391 conditions per place. [2022-12-06 17:14:08,470 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 327 selfloop transitions, 36 changer transitions 41/591 dead transitions. [2022-12-06 17:14:08,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 591 transitions, 3540 flow [2022-12-06 17:14:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-06 17:14:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-06 17:14:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6837 transitions. [2022-12-06 17:14:08,481 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5901596892533448 [2022-12-06 17:14:08,481 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 74 predicate places. [2022-12-06 17:14:08,481 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 591 transitions, 3540 flow [2022-12-06 17:14:08,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:08,483 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:08,483 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:08,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 17:14:08,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash -745010283, now seen corresponding path program 2 times [2022-12-06 17:14:08,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:08,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039100241] [2022-12-06 17:14:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:08,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:09,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039100241] [2022-12-06 17:14:09,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039100241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:09,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:09,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850868137] [2022-12-06 17:14:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:09,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:09,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:09,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:09,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:09,782 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:09,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 591 transitions, 3540 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:09,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:09,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:09,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:13,035 INFO L130 PetriNetUnfolder]: 2612/9121 cut-off events. [2022-12-06 17:14:13,035 INFO L131 PetriNetUnfolder]: For 11900/13664 co-relation queries the response was YES. [2022-12-06 17:14:13,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23155 conditions, 9121 events. 2612/9121 cut-off events. For 11900/13664 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 93939 event pairs, 55 based on Foata normal form. 105/8711 useless extension candidates. Maximal degree in co-relation 19254. Up to 1845 conditions per place. [2022-12-06 17:14:13,088 INFO L137 encePairwiseOnDemand]: 298/331 looper letters, 801 selfloop transitions, 121 changer transitions 70/1179 dead transitions. [2022-12-06 17:14:13,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 1179 transitions, 9132 flow [2022-12-06 17:14:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-06 17:14:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-06 17:14:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7593 transitions. [2022-12-06 17:14:13,097 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5881942830583314 [2022-12-06 17:14:13,098 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 112 predicate places. [2022-12-06 17:14:13,098 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1179 transitions, 9132 flow [2022-12-06 17:14:13,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:13,099 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:13,099 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:13,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 17:14:13,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -571862099, now seen corresponding path program 3 times [2022-12-06 17:14:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:13,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746544896] [2022-12-06 17:14:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:14,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746544896] [2022-12-06 17:14:14,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746544896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:14,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:14,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206905452] [2022-12-06 17:14:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:14,112 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:14,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1179 transitions, 9132 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:14,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:14,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:14,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:17,432 INFO L130 PetriNetUnfolder]: 3242/11668 cut-off events. [2022-12-06 17:14:17,432 INFO L131 PetriNetUnfolder]: For 19743/24616 co-relation queries the response was YES. [2022-12-06 17:14:17,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34650 conditions, 11668 events. 3242/11668 cut-off events. For 19743/24616 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 127742 event pairs, 82 based on Foata normal form. 411/11416 useless extension candidates. Maximal degree in co-relation 28853. Up to 2661 conditions per place. [2022-12-06 17:14:17,507 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1056 selfloop transitions, 141 changer transitions 98/1482 dead transitions. [2022-12-06 17:14:17,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1482 transitions, 14285 flow [2022-12-06 17:14:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-06 17:14:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-06 17:14:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7423 transitions. [2022-12-06 17:14:17,517 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.590157417713468 [2022-12-06 17:14:17,517 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 149 predicate places. [2022-12-06 17:14:17,518 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 1482 transitions, 14285 flow [2022-12-06 17:14:17,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:17,519 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:17,519 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:17,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 17:14:17,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1164007565, now seen corresponding path program 4 times [2022-12-06 17:14:17,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:17,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128898482] [2022-12-06 17:14:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:18,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:18,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128898482] [2022-12-06 17:14:18,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128898482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:18,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:18,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065301463] [2022-12-06 17:14:18,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:18,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:18,523 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:18,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 1482 transitions, 14285 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:18,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:18,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:18,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:22,025 INFO L130 PetriNetUnfolder]: 3392/12166 cut-off events. [2022-12-06 17:14:22,025 INFO L131 PetriNetUnfolder]: For 28475/38247 co-relation queries the response was YES. [2022-12-06 17:14:22,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42142 conditions, 12166 events. 3392/12166 cut-off events. For 28475/38247 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 134598 event pairs, 52 based on Foata normal form. 713/12215 useless extension candidates. Maximal degree in co-relation 34900. Up to 2900 conditions per place. [2022-12-06 17:14:22,099 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1132 selfloop transitions, 142 changer transitions 126/1587 dead transitions. [2022-12-06 17:14:22,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1587 transitions, 18209 flow [2022-12-06 17:14:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-06 17:14:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-06 17:14:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7423 transitions. [2022-12-06 17:14:22,105 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.590157417713468 [2022-12-06 17:14:22,106 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 186 predicate places. [2022-12-06 17:14:22,106 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 1587 transitions, 18209 flow [2022-12-06 17:14:22,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:22,107 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:22,107 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:22,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 17:14:22,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash -363163391, now seen corresponding path program 5 times [2022-12-06 17:14:22,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:22,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481228834] [2022-12-06 17:14:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:22,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:23,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481228834] [2022-12-06 17:14:23,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481228834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:23,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:23,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:23,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637228143] [2022-12-06 17:14:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:23,439 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:23,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1587 transitions, 18209 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:23,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:23,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:23,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:26,897 INFO L130 PetriNetUnfolder]: 3348/12217 cut-off events. [2022-12-06 17:14:26,898 INFO L131 PetriNetUnfolder]: For 38244/57210 co-relation queries the response was YES. [2022-12-06 17:14:26,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47881 conditions, 12217 events. 3348/12217 cut-off events. For 38244/57210 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 136114 event pairs, 118 based on Foata normal form. 739/12304 useless extension candidates. Maximal degree in co-relation 39643. Up to 2938 conditions per place. [2022-12-06 17:14:26,970 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1143 selfloop transitions, 143 changer transitions 151/1624 dead transitions. [2022-12-06 17:14:26,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1624 transitions, 21544 flow [2022-12-06 17:14:26,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:14:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:14:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6662 transitions. [2022-12-06 17:14:26,975 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5919673005153723 [2022-12-06 17:14:26,975 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 219 predicate places. [2022-12-06 17:14:26,976 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 1624 transitions, 21544 flow [2022-12-06 17:14:26,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:26,977 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:26,977 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:26,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 17:14:26,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1980331345, now seen corresponding path program 6 times [2022-12-06 17:14:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:26,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503597567] [2022-12-06 17:14:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:26,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:27,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:27,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503597567] [2022-12-06 17:14:27,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503597567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:27,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:27,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716298382] [2022-12-06 17:14:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:27,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:27,792 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:27,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1624 transitions, 21544 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:27,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:27,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:27,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:31,286 INFO L130 PetriNetUnfolder]: 3399/12384 cut-off events. [2022-12-06 17:14:31,286 INFO L131 PetriNetUnfolder]: For 49449/67958 co-relation queries the response was YES. [2022-12-06 17:14:31,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54318 conditions, 12384 events. 3399/12384 cut-off events. For 49449/67958 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 138299 event pairs, 70 based on Foata normal form. 775/12495 useless extension candidates. Maximal degree in co-relation 45067. Up to 2956 conditions per place. [2022-12-06 17:14:31,359 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1136 selfloop transitions, 137 changer transitions 176/1636 dead transitions. [2022-12-06 17:14:31,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1636 transitions, 24632 flow [2022-12-06 17:14:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 17:14:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 17:14:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6472 transitions. [2022-12-06 17:14:31,372 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5925112148677103 [2022-12-06 17:14:31,374 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 251 predicate places. [2022-12-06 17:14:31,374 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 1636 transitions, 24632 flow [2022-12-06 17:14:31,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:31,375 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:31,375 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:31,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-06 17:14:31,375 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash 793986379, now seen corresponding path program 7 times [2022-12-06 17:14:31,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:31,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336362964] [2022-12-06 17:14:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:31,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:32,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:32,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336362964] [2022-12-06 17:14:32,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336362964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:32,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:32,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473852675] [2022-12-06 17:14:32,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:32,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:32,094 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:32,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 1636 transitions, 24632 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:32,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:32,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:32,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:35,805 INFO L130 PetriNetUnfolder]: 3405/12542 cut-off events. [2022-12-06 17:14:35,805 INFO L131 PetriNetUnfolder]: For 63075/93462 co-relation queries the response was YES. [2022-12-06 17:14:35,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60477 conditions, 12542 events. 3405/12542 cut-off events. For 63075/93462 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 140790 event pairs, 52 based on Foata normal form. 735/12587 useless extension candidates. Maximal degree in co-relation 50227. Up to 2974 conditions per place. [2022-12-06 17:14:35,873 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1120 selfloop transitions, 145 changer transitions 201/1653 dead transitions. [2022-12-06 17:14:35,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1653 transitions, 27863 flow [2022-12-06 17:14:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 17:14:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 17:14:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6478 transitions. [2022-12-06 17:14:35,878 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5930605145106655 [2022-12-06 17:14:35,879 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 283 predicate places. [2022-12-06 17:14:35,879 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 1653 transitions, 27863 flow [2022-12-06 17:14:35,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:35,880 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:35,880 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:35,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-06 17:14:35,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:35,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2051457359, now seen corresponding path program 8 times [2022-12-06 17:14:35,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:35,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444644462] [2022-12-06 17:14:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:36,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444644462] [2022-12-06 17:14:36,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444644462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:36,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:36,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:36,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073425219] [2022-12-06 17:14:36,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:36,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:36,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:36,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:36,560 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:36,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1653 transitions, 27863 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:36,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:36,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:36,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:40,160 INFO L130 PetriNetUnfolder]: 3426/12472 cut-off events. [2022-12-06 17:14:40,160 INFO L131 PetriNetUnfolder]: For 78634/107031 co-relation queries the response was YES. [2022-12-06 17:14:40,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66498 conditions, 12472 events. 3426/12472 cut-off events. For 78634/107031 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 139588 event pairs, 55 based on Foata normal form. 739/12534 useless extension candidates. Maximal degree in co-relation 55461. Up to 2993 conditions per place. [2022-12-06 17:14:40,248 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1101 selfloop transitions, 139 changer transitions 225/1652 dead transitions. [2022-12-06 17:14:40,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 1652 transitions, 30773 flow [2022-12-06 17:14:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:14:40,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:14:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6662 transitions. [2022-12-06 17:14:40,253 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5919673005153723 [2022-12-06 17:14:40,254 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 316 predicate places. [2022-12-06 17:14:40,254 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 1652 transitions, 30773 flow [2022-12-06 17:14:40,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:40,255 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:40,255 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:40,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-06 17:14:40,255 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1032179383, now seen corresponding path program 9 times [2022-12-06 17:14:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:40,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513291522] [2022-12-06 17:14:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:41,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513291522] [2022-12-06 17:14:41,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513291522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:41,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:41,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219245354] [2022-12-06 17:14:41,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:41,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:41,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:41,224 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:41,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 1652 transitions, 30773 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:41,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:41,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:41,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:45,009 INFO L130 PetriNetUnfolder]: 3497/12890 cut-off events. [2022-12-06 17:14:45,010 INFO L131 PetriNetUnfolder]: For 102439/138628 co-relation queries the response was YES. [2022-12-06 17:14:45,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74485 conditions, 12890 events. 3497/12890 cut-off events. For 102439/138628 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 145944 event pairs, 56 based on Foata normal form. 594/12794 useless extension candidates. Maximal degree in co-relation 61579. Up to 3151 conditions per place. [2022-12-06 17:14:45,103 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1154 selfloop transitions, 138 changer transitions 252/1731 dead transitions. [2022-12-06 17:14:45,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 1731 transitions, 35501 flow [2022-12-06 17:14:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 17:14:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 17:14:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6095 transitions. [2022-12-06 17:14:45,108 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5939966864827989 [2022-12-06 17:14:45,108 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 346 predicate places. [2022-12-06 17:14:45,108 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 1731 transitions, 35501 flow [2022-12-06 17:14:45,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:45,109 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:45,109 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:45,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-06 17:14:45,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash 947055399, now seen corresponding path program 10 times [2022-12-06 17:14:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:45,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911978799] [2022-12-06 17:14:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:45,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911978799] [2022-12-06 17:14:45,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911978799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:45,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:45,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:45,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209691705] [2022-12-06 17:14:45,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:45,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:45,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:45,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:45,977 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:45,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 1731 transitions, 35501 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:45,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:45,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:45,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:50,404 INFO L130 PetriNetUnfolder]: 3599/13667 cut-off events. [2022-12-06 17:14:50,405 INFO L131 PetriNetUnfolder]: For 126927/159503 co-relation queries the response was YES. [2022-12-06 17:14:50,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83975 conditions, 13667 events. 3599/13667 cut-off events. For 126927/159503 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 158039 event pairs, 188 based on Foata normal form. 694/13632 useless extension candidates. Maximal degree in co-relation 68980. Up to 3384 conditions per place. [2022-12-06 17:14:50,496 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1214 selfloop transitions, 145 changer transitions 280/1826 dead transitions. [2022-12-06 17:14:50,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 1826 transitions, 40948 flow [2022-12-06 17:14:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-06 17:14:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-06 17:14:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6852 transitions. [2022-12-06 17:14:50,500 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5914544669831678 [2022-12-06 17:14:50,500 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 380 predicate places. [2022-12-06 17:14:50,500 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 1826 transitions, 40948 flow [2022-12-06 17:14:50,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:50,502 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:50,502 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:50,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-06 17:14:50,502 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1410541699, now seen corresponding path program 11 times [2022-12-06 17:14:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:50,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698861337] [2022-12-06 17:14:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:51,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:51,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698861337] [2022-12-06 17:14:51,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698861337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:51,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:51,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:51,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798990267] [2022-12-06 17:14:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:51,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:51,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:51,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:51,457 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:51,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 1826 transitions, 40948 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:51,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:51,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:51,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:14:56,099 INFO L130 PetriNetUnfolder]: 3650/13625 cut-off events. [2022-12-06 17:14:56,099 INFO L131 PetriNetUnfolder]: For 152397/195678 co-relation queries the response was YES. [2022-12-06 17:14:56,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90921 conditions, 13625 events. 3650/13625 cut-off events. For 152397/195678 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 156301 event pairs, 93 based on Foata normal form. 644/13537 useless extension candidates. Maximal degree in co-relation 74625. Up to 3407 conditions per place. [2022-12-06 17:14:56,202 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1207 selfloop transitions, 144 changer transitions 305/1843 dead transitions. [2022-12-06 17:14:56,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 1843 transitions, 44695 flow [2022-12-06 17:14:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 17:14:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 17:14:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6089 transitions. [2022-12-06 17:14:56,206 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5934119481532014 [2022-12-06 17:14:56,206 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 410 predicate places. [2022-12-06 17:14:56,206 INFO L495 AbstractCegarLoop]: Abstraction has has 710 places, 1843 transitions, 44695 flow [2022-12-06 17:14:56,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:56,207 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:14:56,207 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:14:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-06 17:14:56,208 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:14:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:14:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1672938129, now seen corresponding path program 12 times [2022-12-06 17:14:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:14:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644597196] [2022-12-06 17:14:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:14:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:14:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:14:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:14:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:14:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644597196] [2022-12-06 17:14:57,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644597196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:14:57,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:14:57,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:14:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205407523] [2022-12-06 17:14:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:14:57,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:14:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:14:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:14:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:14:57,023 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:14:57,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 1843 transitions, 44695 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:14:57,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:14:57,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:14:57,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:01,317 INFO L130 PetriNetUnfolder]: 3612/13534 cut-off events. [2022-12-06 17:15:01,317 INFO L131 PetriNetUnfolder]: For 180978/249120 co-relation queries the response was YES. [2022-12-06 17:15:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96761 conditions, 13534 events. 3612/13534 cut-off events. For 180978/249120 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 155372 event pairs, 135 based on Foata normal form. 640/13443 useless extension candidates. Maximal degree in co-relation 79520. Up to 3386 conditions per place. [2022-12-06 17:15:01,422 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1189 selfloop transitions, 137 changer transitions 329/1842 dead transitions. [2022-12-06 17:15:01,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 1842 transitions, 47977 flow [2022-12-06 17:15:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:15:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:15:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5899 transitions. [2022-12-06 17:15:01,425 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5940584088620342 [2022-12-06 17:15:01,426 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 439 predicate places. [2022-12-06 17:15:01,426 INFO L495 AbstractCegarLoop]: Abstraction has has 739 places, 1842 transitions, 47977 flow [2022-12-06 17:15:01,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:01,426 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:01,426 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:01,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-06 17:15:01,427 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash 122987495, now seen corresponding path program 13 times [2022-12-06 17:15:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556204776] [2022-12-06 17:15:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:02,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:02,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556204776] [2022-12-06 17:15:02,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556204776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:02,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:02,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626700950] [2022-12-06 17:15:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:02,483 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:02,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 1842 transitions, 47977 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:02,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:02,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:02,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:07,720 INFO L130 PetriNetUnfolder]: 3809/14378 cut-off events. [2022-12-06 17:15:07,720 INFO L131 PetriNetUnfolder]: For 216337/287747 co-relation queries the response was YES. [2022-12-06 17:15:07,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108880 conditions, 14378 events. 3809/14378 cut-off events. For 216337/287747 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 167543 event pairs, 79 based on Foata normal form. 684/14295 useless extension candidates. Maximal degree in co-relation 89069. Up to 3687 conditions per place. [2022-12-06 17:15:07,847 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1298 selfloop transitions, 144 changer transitions 357/1986 dead transitions. [2022-12-06 17:15:07,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 772 places, 1986 transitions, 55627 flow [2022-12-06 17:15:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:15:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:15:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6669 transitions. [2022-12-06 17:15:07,851 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5925893015816599 [2022-12-06 17:15:07,851 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 472 predicate places. [2022-12-06 17:15:07,851 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 1986 transitions, 55627 flow [2022-12-06 17:15:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:07,852 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:07,852 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-06 17:15:07,852 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash -925110401, now seen corresponding path program 14 times [2022-12-06 17:15:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:07,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717979425] [2022-12-06 17:15:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:08,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:08,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717979425] [2022-12-06 17:15:08,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717979425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:08,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:08,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:08,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493956337] [2022-12-06 17:15:08,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:08,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:08,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:08,704 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:08,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 1986 transitions, 55627 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:08,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:08,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:08,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:14,369 INFO L130 PetriNetUnfolder]: 3899/14872 cut-off events. [2022-12-06 17:15:14,369 INFO L131 PetriNetUnfolder]: For 267126/358541 co-relation queries the response was YES. [2022-12-06 17:15:14,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119940 conditions, 14872 events. 3899/14872 cut-off events. For 267126/358541 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 176006 event pairs, 124 based on Foata normal form. 766/14860 useless extension candidates. Maximal degree in co-relation 96327. Up to 3927 conditions per place. [2022-12-06 17:15:14,640 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1375 selfloop transitions, 155 changer transitions 386/2103 dead transitions. [2022-12-06 17:15:14,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 2103 transitions, 63163 flow [2022-12-06 17:15:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-06 17:15:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-06 17:15:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7618 transitions. [2022-12-06 17:15:14,644 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5901309164149043 [2022-12-06 17:15:14,644 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 510 predicate places. [2022-12-06 17:15:14,644 INFO L495 AbstractCegarLoop]: Abstraction has has 810 places, 2103 transitions, 63163 flow [2022-12-06 17:15:14,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:14,645 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:14,645 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:14,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-06 17:15:14,645 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:14,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:14,646 INFO L85 PathProgramCache]: Analyzing trace with hash -333765163, now seen corresponding path program 15 times [2022-12-06 17:15:14,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:14,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458830905] [2022-12-06 17:15:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:15,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458830905] [2022-12-06 17:15:15,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458830905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:15,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:15,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226479024] [2022-12-06 17:15:15,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:15,356 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:15,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 2103 transitions, 63163 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:15,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:15,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:15,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:21,256 INFO L130 PetriNetUnfolder]: 3857/14941 cut-off events. [2022-12-06 17:15:21,256 INFO L131 PetriNetUnfolder]: For 298908/385816 co-relation queries the response was YES. [2022-12-06 17:15:21,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126395 conditions, 14941 events. 3857/14941 cut-off events. For 298908/385816 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 177416 event pairs, 176 based on Foata normal form. 844/15008 useless extension candidates. Maximal degree in co-relation 101627. Up to 3927 conditions per place. [2022-12-06 17:15:21,384 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1359 selfloop transitions, 145 changer transitions 411/2102 dead transitions. [2022-12-06 17:15:21,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 844 places, 2102 transitions, 66959 flow [2022-12-06 17:15:21,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-06 17:15:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-06 17:15:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6851 transitions. [2022-12-06 17:15:21,387 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5913681484678464 [2022-12-06 17:15:21,388 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 544 predicate places. [2022-12-06 17:15:21,388 INFO L495 AbstractCegarLoop]: Abstraction has has 844 places, 2102 transitions, 66959 flow [2022-12-06 17:15:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:21,389 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:21,389 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:21,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-06 17:15:21,389 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:21,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash -362289409, now seen corresponding path program 16 times [2022-12-06 17:15:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:21,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744255673] [2022-12-06 17:15:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:22,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:22,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744255673] [2022-12-06 17:15:22,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744255673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:22,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:22,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509228066] [2022-12-06 17:15:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:22,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:22,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:22,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:22,583 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:22,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 844 places, 2102 transitions, 66959 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:22,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:22,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:27,861 INFO L130 PetriNetUnfolder]: 3915/15084 cut-off events. [2022-12-06 17:15:27,861 INFO L131 PetriNetUnfolder]: For 337064/431578 co-relation queries the response was YES. [2022-12-06 17:15:27,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134530 conditions, 15084 events. 3915/15084 cut-off events. For 337064/431578 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 179186 event pairs, 90 based on Foata normal form. 690/14975 useless extension candidates. Maximal degree in co-relation 108177. Up to 3950 conditions per place. [2022-12-06 17:15:27,989 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1353 selfloop transitions, 145 changer transitions 434/2119 dead transitions. [2022-12-06 17:15:27,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 2119 transitions, 71428 flow [2022-12-06 17:15:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:15:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:15:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5903 transitions. [2022-12-06 17:15:27,993 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5944612286002015 [2022-12-06 17:15:27,993 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 573 predicate places. [2022-12-06 17:15:27,993 INFO L495 AbstractCegarLoop]: Abstraction has has 873 places, 2119 transitions, 71428 flow [2022-12-06 17:15:27,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:27,994 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:27,994 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:27,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-06 17:15:27,994 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1251435511, now seen corresponding path program 17 times [2022-12-06 17:15:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:27,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27116127] [2022-12-06 17:15:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:27,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:28,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27116127] [2022-12-06 17:15:28,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27116127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:28,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:28,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73323940] [2022-12-06 17:15:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:28,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:28,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:28,848 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:28,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 873 places, 2119 transitions, 71428 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:28,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:28,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:28,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:34,341 INFO L130 PetriNetUnfolder]: 3972/15178 cut-off events. [2022-12-06 17:15:34,341 INFO L131 PetriNetUnfolder]: For 384615/489049 co-relation queries the response was YES. [2022-12-06 17:15:34,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142648 conditions, 15178 events. 3972/15178 cut-off events. For 384615/489049 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 179784 event pairs, 112 based on Foata normal form. 640/15019 useless extension candidates. Maximal degree in co-relation 114953. Up to 3976 conditions per place. [2022-12-06 17:15:34,458 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1332 selfloop transitions, 139 changer transitions 460/2118 dead transitions. [2022-12-06 17:15:34,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 2118 transitions, 75252 flow [2022-12-06 17:15:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 17:15:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 17:15:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6093 transitions. [2022-12-06 17:15:34,461 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5938017737062664 [2022-12-06 17:15:34,461 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 603 predicate places. [2022-12-06 17:15:34,461 INFO L495 AbstractCegarLoop]: Abstraction has has 903 places, 2118 transitions, 75252 flow [2022-12-06 17:15:34,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:34,462 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:34,462 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:34,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-06 17:15:34,462 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1020416013, now seen corresponding path program 18 times [2022-12-06 17:15:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:34,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384558393] [2022-12-06 17:15:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:35,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:35,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:35,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384558393] [2022-12-06 17:15:35,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384558393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:35,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:35,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:35,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126211241] [2022-12-06 17:15:35,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:35,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:35,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:35,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:35,195 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:35,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 903 places, 2118 transitions, 75252 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:35,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:35,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:35,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:41,298 INFO L130 PetriNetUnfolder]: 4100/15788 cut-off events. [2022-12-06 17:15:41,298 INFO L131 PetriNetUnfolder]: For 447301/572456 co-relation queries the response was YES. [2022-12-06 17:15:41,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155508 conditions, 15788 events. 4100/15788 cut-off events. For 447301/572456 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 189186 event pairs, 120 based on Foata normal form. 386/15364 useless extension candidates. Maximal degree in co-relation 124913. Up to 4620 conditions per place. [2022-12-06 17:15:41,439 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1450 selfloop transitions, 133 changer transitions 487/2257 dead transitions. [2022-12-06 17:15:41,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 2257 transitions, 84654 flow [2022-12-06 17:15:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-06 17:15:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-06 17:15:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6064 transitions. [2022-12-06 17:15:41,442 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5909755384465452 [2022-12-06 17:15:41,442 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 633 predicate places. [2022-12-06 17:15:41,442 INFO L495 AbstractCegarLoop]: Abstraction has has 933 places, 2257 transitions, 84654 flow [2022-12-06 17:15:41,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:41,443 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:41,443 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:41,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-06 17:15:41,443 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1864877235, now seen corresponding path program 19 times [2022-12-06 17:15:41,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:41,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583240069] [2022-12-06 17:15:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:41,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:42,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583240069] [2022-12-06 17:15:42,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583240069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:42,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:42,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:42,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606700409] [2022-12-06 17:15:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:42,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:42,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:42,146 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:42,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 2257 transitions, 84654 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:42,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:42,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:42,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:49,307 INFO L130 PetriNetUnfolder]: 4265/16643 cut-off events. [2022-12-06 17:15:49,307 INFO L131 PetriNetUnfolder]: For 512546/636266 co-relation queries the response was YES. [2022-12-06 17:15:49,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170535 conditions, 16643 events. 4265/16643 cut-off events. For 512546/636266 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 202608 event pairs, 135 based on Foata normal form. 512/16282 useless extension candidates. Maximal degree in co-relation 135265. Up to 4872 conditions per place. [2022-12-06 17:15:49,593 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1541 selfloop transitions, 146 changer transitions 516/2390 dead transitions. [2022-12-06 17:15:49,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 967 places, 2390 transitions, 94532 flow [2022-12-06 17:15:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-06 17:15:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-06 17:15:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6835 transitions. [2022-12-06 17:15:49,597 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5899870522227018 [2022-12-06 17:15:49,597 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 667 predicate places. [2022-12-06 17:15:49,597 INFO L495 AbstractCegarLoop]: Abstraction has has 967 places, 2390 transitions, 94532 flow [2022-12-06 17:15:49,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:49,598 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:49,598 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:49,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-06 17:15:49,598 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash -262615825, now seen corresponding path program 20 times [2022-12-06 17:15:49,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:49,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867249330] [2022-12-06 17:15:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:50,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:50,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867249330] [2022-12-06 17:15:50,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867249330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:50,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:50,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:50,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523383213] [2022-12-06 17:15:50,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:50,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:50,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:50,346 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:50,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 967 places, 2390 transitions, 94532 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:50,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:50,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:50,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:15:57,858 INFO L130 PetriNetUnfolder]: 4305/16826 cut-off events. [2022-12-06 17:15:57,858 INFO L131 PetriNetUnfolder]: For 578230/675207 co-relation queries the response was YES. [2022-12-06 17:15:57,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179788 conditions, 16826 events. 4305/16826 cut-off events. For 578230/675207 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 205315 event pairs, 153 based on Foata normal form. 636/16575 useless extension candidates. Maximal degree in co-relation 142637. Up to 4925 conditions per place. [2022-12-06 17:15:58,014 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1536 selfloop transitions, 149 changer transitions 542/2414 dead transitions. [2022-12-06 17:15:58,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 996 places, 2414 transitions, 100022 flow [2022-12-06 17:15:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:15:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:15:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5874 transitions. [2022-12-06 17:15:58,017 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5915407854984894 [2022-12-06 17:15:58,018 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 696 predicate places. [2022-12-06 17:15:58,018 INFO L495 AbstractCegarLoop]: Abstraction has has 996 places, 2414 transitions, 100022 flow [2022-12-06 17:15:58,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:58,018 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:15:58,018 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:15:58,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-06 17:15:58,019 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:15:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:15:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash -449497555, now seen corresponding path program 21 times [2022-12-06 17:15:58,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:15:58,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470980071] [2022-12-06 17:15:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:15:58,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:15:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:15:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:15:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:15:59,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470980071] [2022-12-06 17:15:59,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470980071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:15:59,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:15:59,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:15:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14120449] [2022-12-06 17:15:59,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:15:59,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:15:59,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:15:59,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:15:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:15:59,006 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:15:59,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 996 places, 2414 transitions, 100022 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:15:59,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:15:59,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:15:59,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:16:06,478 INFO L130 PetriNetUnfolder]: 4366/17138 cut-off events. [2022-12-06 17:16:06,478 INFO L131 PetriNetUnfolder]: For 654229/766467 co-relation queries the response was YES. [2022-12-06 17:16:06,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190877 conditions, 17138 events. 4366/17138 cut-off events. For 654229/766467 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 210544 event pairs, 153 based on Foata normal form. 464/16710 useless extension candidates. Maximal degree in co-relation 150243. Up to 5231 conditions per place. [2022-12-06 17:16:06,636 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1589 selfloop transitions, 123 changer transitions 569/2468 dead transitions. [2022-12-06 17:16:06,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1022 places, 2468 transitions, 107088 flow [2022-12-06 17:16:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:16:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:16:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5307 transitions. [2022-12-06 17:16:06,639 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5938234306814367 [2022-12-06 17:16:06,639 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 722 predicate places. [2022-12-06 17:16:06,639 INFO L495 AbstractCegarLoop]: Abstraction has has 1022 places, 2468 transitions, 107088 flow [2022-12-06 17:16:06,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:06,640 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:16:06,640 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:16:06,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-06 17:16:06,640 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:16:06,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:16:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash -990303047, now seen corresponding path program 22 times [2022-12-06 17:16:06,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:16:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610543633] [2022-12-06 17:16:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:16:06,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:16:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:16:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:16:07,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:16:07,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610543633] [2022-12-06 17:16:07,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610543633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:16:07,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:16:07,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:16:07,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243580058] [2022-12-06 17:16:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:16:07,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:16:07,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:16:07,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:16:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:16:07,729 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:16:07,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1022 places, 2468 transitions, 107088 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:07,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:16:07,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:16:07,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:16:15,599 INFO L130 PetriNetUnfolder]: 4378/17526 cut-off events. [2022-12-06 17:16:15,600 INFO L131 PetriNetUnfolder]: For 722013/868486 co-relation queries the response was YES. [2022-12-06 17:16:15,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199701 conditions, 17526 events. 4378/17526 cut-off events. For 722013/868486 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 217086 event pairs, 179 based on Foata normal form. 368/16953 useless extension candidates. Maximal degree in co-relation 157278. Up to 5258 conditions per place. [2022-12-06 17:16:15,957 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1558 selfloop transitions, 146 changer transitions 594/2485 dead transitions. [2022-12-06 17:16:15,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1048 places, 2485 transitions, 112493 flow [2022-12-06 17:16:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:16:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:16:15,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5298 transitions. [2022-12-06 17:16:15,960 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5928163813360188 [2022-12-06 17:16:15,960 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 748 predicate places. [2022-12-06 17:16:15,960 INFO L495 AbstractCegarLoop]: Abstraction has has 1048 places, 2485 transitions, 112493 flow [2022-12-06 17:16:15,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:15,961 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:16:15,961 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:16:15,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-06 17:16:15,961 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:16:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:16:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -431017591, now seen corresponding path program 23 times [2022-12-06 17:16:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:16:15,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713813665] [2022-12-06 17:16:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:16:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:16:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:16:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:16:16,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:16:16,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713813665] [2022-12-06 17:16:16,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713813665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:16:16,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:16:16,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:16:16,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962508267] [2022-12-06 17:16:16,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:16:16,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:16:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:16:16,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:16:16,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:16:16,686 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:16:16,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1048 places, 2485 transitions, 112493 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:16,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:16:16,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:16:16,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:16:24,117 INFO L130 PetriNetUnfolder]: 4335/17218 cut-off events. [2022-12-06 17:16:24,117 INFO L131 PetriNetUnfolder]: For 775188/931623 co-relation queries the response was YES. [2022-12-06 17:16:24,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206354 conditions, 17218 events. 4335/17218 cut-off events. For 775188/931623 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 212488 event pairs, 196 based on Foata normal form. 468/16788 useless extension candidates. Maximal degree in co-relation 162338. Up to 5227 conditions per place. [2022-12-06 17:16:24,490 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1540 selfloop transitions, 139 changer transitions 618/2484 dead transitions. [2022-12-06 17:16:24,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1073 places, 2484 transitions, 117037 flow [2022-12-06 17:16:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:16:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:16:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5108 transitions. [2022-12-06 17:16:24,493 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5935393911224727 [2022-12-06 17:16:24,494 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 773 predicate places. [2022-12-06 17:16:24,494 INFO L495 AbstractCegarLoop]: Abstraction has has 1073 places, 2484 transitions, 117037 flow [2022-12-06 17:16:24,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:24,494 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:16:24,494 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:16:24,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-06 17:16:24,494 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:16:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:16:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash -887678319, now seen corresponding path program 24 times [2022-12-06 17:16:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:16:24,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161176850] [2022-12-06 17:16:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:16:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:16:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:16:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:16:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:16:25,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161176850] [2022-12-06 17:16:25,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161176850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:16:25,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:16:25,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:16:25,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94570189] [2022-12-06 17:16:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:16:25,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:16:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:16:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:16:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:16:25,279 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:16:25,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1073 places, 2484 transitions, 117037 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:25,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:16:25,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:16:25,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:16:33,742 INFO L130 PetriNetUnfolder]: 4436/17593 cut-off events. [2022-12-06 17:16:33,742 INFO L131 PetriNetUnfolder]: For 878182/1057801 co-relation queries the response was YES. [2022-12-06 17:16:33,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219470 conditions, 17593 events. 4436/17593 cut-off events. For 878182/1057801 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 217866 event pairs, 152 based on Foata normal form. 485/17174 useless extension candidates. Maximal degree in co-relation 173443. Up to 5413 conditions per place. [2022-12-06 17:16:33,913 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1545 selfloop transitions, 187 changer transitions 645/2564 dead transitions. [2022-12-06 17:16:33,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1105 places, 2564 transitions, 125872 flow [2022-12-06 17:16:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 17:16:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 17:16:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6434 transitions. [2022-12-06 17:16:33,916 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5890323171289938 [2022-12-06 17:16:33,917 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 805 predicate places. [2022-12-06 17:16:33,917 INFO L495 AbstractCegarLoop]: Abstraction has has 1105 places, 2564 transitions, 125872 flow [2022-12-06 17:16:33,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:33,917 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:16:33,917 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:16:33,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-06 17:16:33,917 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:16:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:16:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1836597261, now seen corresponding path program 25 times [2022-12-06 17:16:33,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:16:33,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998650104] [2022-12-06 17:16:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:16:33,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:16:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:16:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:16:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:16:34,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998650104] [2022-12-06 17:16:34,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998650104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:16:34,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:16:34,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:16:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82201295] [2022-12-06 17:16:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:16:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:16:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:16:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:16:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:16:34,743 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:16:34,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1105 places, 2564 transitions, 125872 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:34,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:16:34,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:16:34,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:16:44,101 INFO L130 PetriNetUnfolder]: 4547/17996 cut-off events. [2022-12-06 17:16:44,101 INFO L131 PetriNetUnfolder]: For 964353/1112460 co-relation queries the response was YES. [2022-12-06 17:16:44,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233442 conditions, 17996 events. 4547/17996 cut-off events. For 964353/1112460 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 224414 event pairs, 174 based on Foata normal form. 500/17594 useless extension candidates. Maximal degree in co-relation 185423. Up to 5617 conditions per place. [2022-12-06 17:16:44,273 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1580 selfloop transitions, 198 changer transitions 672/2637 dead transitions. [2022-12-06 17:16:44,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1134 places, 2637 transitions, 134640 flow [2022-12-06 17:16:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 17:16:44,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 17:16:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5881 transitions. [2022-12-06 17:16:44,276 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.592245720040282 [2022-12-06 17:16:44,276 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 834 predicate places. [2022-12-06 17:16:44,276 INFO L495 AbstractCegarLoop]: Abstraction has has 1134 places, 2637 transitions, 134640 flow [2022-12-06 17:16:44,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:44,277 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:16:44,277 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:16:44,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-06 17:16:44,277 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:16:44,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:16:44,277 INFO L85 PathProgramCache]: Analyzing trace with hash -299842551, now seen corresponding path program 26 times [2022-12-06 17:16:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:16:44,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511141491] [2022-12-06 17:16:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:16:44,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:16:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:16:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:16:45,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:16:45,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511141491] [2022-12-06 17:16:45,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511141491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:16:45,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:16:45,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:16:45,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077218230] [2022-12-06 17:16:45,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:16:45,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:16:45,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:16:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:16:45,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:16:45,004 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:16:45,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1134 places, 2637 transitions, 134640 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:45,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:16:45,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:16:45,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:16:54,508 INFO L130 PetriNetUnfolder]: 4596/18535 cut-off events. [2022-12-06 17:16:54,509 INFO L131 PetriNetUnfolder]: For 1052628/1230883 co-relation queries the response was YES. [2022-12-06 17:16:54,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246631 conditions, 18535 events. 4596/18535 cut-off events. For 1052628/1230883 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 233638 event pairs, 184 based on Foata normal form. 702/18281 useless extension candidates. Maximal degree in co-relation 196455. Up to 5773 conditions per place. [2022-12-06 17:16:54,690 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1621 selfloop transitions, 206 changer transitions 700/2714 dead transitions. [2022-12-06 17:16:54,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1162 places, 2714 transitions, 143951 flow [2022-12-06 17:16:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:16:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:16:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5691 transitions. [2022-12-06 17:16:54,693 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5928742577351808 [2022-12-06 17:16:54,693 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 862 predicate places. [2022-12-06 17:16:54,693 INFO L495 AbstractCegarLoop]: Abstraction has has 1162 places, 2714 transitions, 143951 flow [2022-12-06 17:16:54,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:54,694 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:16:54,694 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:16:54,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-06 17:16:54,694 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:16:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:16:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1929940933, now seen corresponding path program 27 times [2022-12-06 17:16:54,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:16:54,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811287553] [2022-12-06 17:16:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:16:54,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:16:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:16:55,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:16:55,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:16:55,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811287553] [2022-12-06 17:16:55,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811287553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:16:55,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:16:55,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:16:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041645237] [2022-12-06 17:16:55,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:16:55,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:16:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:16:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:16:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:16:55,595 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:16:55,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1162 places, 2714 transitions, 143951 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:16:55,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:16:55,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:16:55,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:17:05,109 INFO L130 PetriNetUnfolder]: 4653/18734 cut-off events. [2022-12-06 17:17:05,109 INFO L131 PetriNetUnfolder]: For 1140609/1347958 co-relation queries the response was YES. [2022-12-06 17:17:05,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256465 conditions, 18734 events. 4653/18734 cut-off events. For 1140609/1347958 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 236523 event pairs, 169 based on Foata normal form. 331/18069 useless extension candidates. Maximal degree in co-relation 204396. Up to 5817 conditions per place. [2022-12-06 17:17:05,473 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1614 selfloop transitions, 207 changer transitions 723/2731 dead transitions. [2022-12-06 17:17:05,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1186 places, 2731 transitions, 150018 flow [2022-12-06 17:17:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-06 17:17:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-06 17:17:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4925 transitions. [2022-12-06 17:17:05,475 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.595166163141994 [2022-12-06 17:17:05,475 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 886 predicate places. [2022-12-06 17:17:05,475 INFO L495 AbstractCegarLoop]: Abstraction has has 1186 places, 2731 transitions, 150018 flow [2022-12-06 17:17:05,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:05,476 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:17:05,476 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:17:05,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-06 17:17:05,476 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:17:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:17:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 480922983, now seen corresponding path program 28 times [2022-12-06 17:17:05,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:17:05,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830943242] [2022-12-06 17:17:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:17:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:17:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:17:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:17:06,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:17:06,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830943242] [2022-12-06 17:17:06,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830943242] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:17:06,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:17:06,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:17:06,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497260214] [2022-12-06 17:17:06,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:17:06,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:17:06,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:17:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:17:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:17:06,169 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:17:06,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1186 places, 2731 transitions, 150018 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:06,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:17:06,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:17:06,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:17:16,784 INFO L130 PetriNetUnfolder]: 4633/18766 cut-off events. [2022-12-06 17:17:16,784 INFO L131 PetriNetUnfolder]: For 1223352/1376601 co-relation queries the response was YES. [2022-12-06 17:17:16,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264774 conditions, 18766 events. 4633/18766 cut-off events. For 1223352/1376601 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 237566 event pairs, 260 based on Foata normal form. 680/18466 useless extension candidates. Maximal degree in co-relation 211032. Up to 5812 conditions per place. [2022-12-06 17:17:16,973 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1600 selfloop transitions, 195 changer transitions 748/2730 dead transitions. [2022-12-06 17:17:16,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1218 places, 2730 transitions, 155044 flow [2022-12-06 17:17:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 17:17:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 17:17:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6465 transitions. [2022-12-06 17:17:16,976 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5918703652842625 [2022-12-06 17:17:16,976 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 918 predicate places. [2022-12-06 17:17:16,977 INFO L495 AbstractCegarLoop]: Abstraction has has 1218 places, 2730 transitions, 155044 flow [2022-12-06 17:17:16,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:16,977 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:17:16,977 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:17:16,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-06 17:17:16,977 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:17:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:17:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1915149713, now seen corresponding path program 29 times [2022-12-06 17:17:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:17:16,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727290687] [2022-12-06 17:17:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:17:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:17:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:17:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:17:17,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:17:17,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727290687] [2022-12-06 17:17:17,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727290687] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:17:17,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:17:17,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:17:17,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657175114] [2022-12-06 17:17:17,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:17:17,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:17:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:17:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:17:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:17:17,910 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:17:17,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1218 places, 2730 transitions, 155044 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:17,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:17:17,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:17:17,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:17:28,488 INFO L130 PetriNetUnfolder]: 4639/18894 cut-off events. [2022-12-06 17:17:28,488 INFO L131 PetriNetUnfolder]: For 1291529/1450273 co-relation queries the response was YES. [2022-12-06 17:17:28,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273385 conditions, 18894 events. 4639/18894 cut-off events. For 1291529/1450273 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 239549 event pairs, 288 based on Foata normal form. 465/18383 useless extension candidates. Maximal degree in co-relation 217974. Up to 5810 conditions per place. [2022-12-06 17:17:28,852 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1573 selfloop transitions, 195 changer transitions 774/2729 dead transitions. [2022-12-06 17:17:28,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1243 places, 2729 transitions, 160066 flow [2022-12-06 17:17:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 17:17:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 17:17:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5115 transitions. [2022-12-06 17:17:28,855 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5943527771322333 [2022-12-06 17:17:28,855 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 943 predicate places. [2022-12-06 17:17:28,855 INFO L495 AbstractCegarLoop]: Abstraction has has 1243 places, 2729 transitions, 160066 flow [2022-12-06 17:17:28,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:28,856 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:17:28,856 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:17:28,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-06 17:17:28,856 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:17:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:17:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1519065681, now seen corresponding path program 30 times [2022-12-06 17:17:28,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:17:28,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238964858] [2022-12-06 17:17:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:17:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:17:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:17:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:17:29,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:17:29,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238964858] [2022-12-06 17:17:29,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238964858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:17:29,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:17:29,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:17:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571670184] [2022-12-06 17:17:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:17:29,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:17:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:17:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:17:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:17:29,617 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:17:29,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1243 places, 2729 transitions, 160066 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:29,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:17:29,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:17:29,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:17:41,521 INFO L130 PetriNetUnfolder]: 5291/21095 cut-off events. [2022-12-06 17:17:41,521 INFO L131 PetriNetUnfolder]: For 1598451/1804738 co-relation queries the response was YES. [2022-12-06 17:17:41,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318655 conditions, 21095 events. 5291/21095 cut-off events. For 1598451/1804738 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 271351 event pairs, 165 based on Foata normal form. 433/20436 useless extension candidates. Maximal degree in co-relation 260547. Up to 6766 conditions per place. [2022-12-06 17:17:41,770 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 1875 selfloop transitions, 118 changer transitions 802/2982 dead transitions. [2022-12-06 17:17:41,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1275 places, 2982 transitions, 181417 flow [2022-12-06 17:17:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 17:17:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 17:17:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 6429 transitions. [2022-12-06 17:17:41,773 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5885745674265311 [2022-12-06 17:17:41,774 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 975 predicate places. [2022-12-06 17:17:41,774 INFO L495 AbstractCegarLoop]: Abstraction has has 1275 places, 2982 transitions, 181417 flow [2022-12-06 17:17:41,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:41,774 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:17:41,775 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:17:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-06 17:17:41,775 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:17:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:17:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1228090109, now seen corresponding path program 31 times [2022-12-06 17:17:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:17:41,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877233759] [2022-12-06 17:17:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:17:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:17:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:17:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:17:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:17:42,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877233759] [2022-12-06 17:17:42,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877233759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:17:42,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:17:42,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-06 17:17:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507691346] [2022-12-06 17:17:42,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:17:42,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:17:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:17:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:17:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:17:42,998 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 331 [2022-12-06 17:17:42,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1275 places, 2982 transitions, 181417 flow. Second operand has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:42,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:17:42,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 331 [2022-12-06 17:17:42,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:17:59,549 INFO L130 PetriNetUnfolder]: 5492/22018 cut-off events. [2022-12-06 17:17:59,550 INFO L131 PetriNetUnfolder]: For 1689847/1880774 co-relation queries the response was YES. [2022-12-06 17:17:59,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342337 conditions, 22018 events. 5492/22018 cut-off events. For 1689847/1880774 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 285471 event pairs, 225 based on Foata normal form. 625/21524 useless extension candidates. Maximal degree in co-relation 268437. Up to 6770 conditions per place. [2022-12-06 17:17:59,844 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 1978 selfloop transitions, 329 changer transitions 830/3302 dead transitions. [2022-12-06 17:17:59,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1326 places, 3302 transitions, 208293 flow [2022-12-06 17:17:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-06 17:17:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-06 17:17:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8718 transitions. [2022-12-06 17:17:59,848 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5065070880780851 [2022-12-06 17:17:59,848 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1026 predicate places. [2022-12-06 17:17:59,848 INFO L495 AbstractCegarLoop]: Abstraction has has 1326 places, 3302 transitions, 208293 flow [2022-12-06 17:17:59,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 164.64285714285714) internal successors, (4610), 28 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:17:59,849 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:17:59,849 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:17:59,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-06 17:17:59,849 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:17:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:17:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash -457968011, now seen corresponding path program 32 times [2022-12-06 17:17:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:17:59,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430098698] [2022-12-06 17:17:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:17:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:17:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:18:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:18:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:18:01,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430098698] [2022-12-06 17:18:01,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430098698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:18:01,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:18:01,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:18:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489140101] [2022-12-06 17:18:01,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:18:01,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:18:01,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:18:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:18:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:18:01,054 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:18:01,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1326 places, 3302 transitions, 208293 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:18:01,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:18:01,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:18:01,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:18:19,527 INFO L130 PetriNetUnfolder]: 6120/24348 cut-off events. [2022-12-06 17:18:19,528 INFO L131 PetriNetUnfolder]: For 2046114/2294245 co-relation queries the response was YES. [2022-12-06 17:18:19,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389918 conditions, 24348 events. 6120/24348 cut-off events. For 2046114/2294245 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 319787 event pairs, 202 based on Foata normal form. 1246/24344 useless extension candidates. Maximal degree in co-relation 304469. Up to 7239 conditions per place. [2022-12-06 17:18:19,819 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2257 selfloop transitions, 328 changer transitions 858/3605 dead transitions. [2022-12-06 17:18:19,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1380 places, 3605 transitions, 235316 flow [2022-12-06 17:18:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-06 17:18:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-06 17:18:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 9015 transitions. [2022-12-06 17:18:19,824 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4951936281241417 [2022-12-06 17:18:19,824 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1080 predicate places. [2022-12-06 17:18:19,824 INFO L495 AbstractCegarLoop]: Abstraction has has 1380 places, 3605 transitions, 235316 flow [2022-12-06 17:18:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:18:19,825 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:18:19,825 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:18:19,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-06 17:18:19,825 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:18:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:18:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2103668165, now seen corresponding path program 33 times [2022-12-06 17:18:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:18:19,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382361967] [2022-12-06 17:18:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:18:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:18:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:18:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:18:21,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:18:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382361967] [2022-12-06 17:18:21,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382361967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:18:21,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:18:21,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:18:21,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700432174] [2022-12-06 17:18:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:18:21,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:18:21,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:18:21,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:18:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:18:21,018 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:18:21,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1380 places, 3605 transitions, 235316 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:18:21,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:18:21,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:18:21,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:18:40,369 INFO L130 PetriNetUnfolder]: 6222/25123 cut-off events. [2022-12-06 17:18:40,369 INFO L131 PetriNetUnfolder]: For 2037484/2162610 co-relation queries the response was YES. [2022-12-06 17:18:40,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409984 conditions, 25123 events. 6222/25123 cut-off events. For 2037484/2162610 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 333269 event pairs, 314 based on Foata normal form. 1254/25093 useless extension candidates. Maximal degree in co-relation 319016. Up to 7509 conditions per place. [2022-12-06 17:18:40,677 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2333 selfloop transitions, 329 changer transitions 886/3710 dead transitions. [2022-12-06 17:18:40,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1434 places, 3710 transitions, 249626 flow [2022-12-06 17:18:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-06 17:18:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-06 17:18:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 9015 transitions. [2022-12-06 17:18:40,682 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4951936281241417 [2022-12-06 17:18:40,682 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1134 predicate places. [2022-12-06 17:18:40,682 INFO L495 AbstractCegarLoop]: Abstraction has has 1434 places, 3710 transitions, 249626 flow [2022-12-06 17:18:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:18:40,683 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:18:40,683 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:18:40,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-06 17:18:40,683 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:18:40,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:18:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 360176263, now seen corresponding path program 34 times [2022-12-06 17:18:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:18:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265850947] [2022-12-06 17:18:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:18:40,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:18:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:18:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:18:41,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:18:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265850947] [2022-12-06 17:18:41,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265850947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:18:41,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:18:41,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:18:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349599043] [2022-12-06 17:18:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:18:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:18:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:18:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:18:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:18:41,446 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:18:41,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1434 places, 3710 transitions, 249626 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:18:41,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:18:41,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:18:41,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:19:04,966 INFO L130 PetriNetUnfolder]: 6942/27608 cut-off events. [2022-12-06 17:19:04,966 INFO L131 PetriNetUnfolder]: For 2469115/2651066 co-relation queries the response was YES. [2022-12-06 17:19:05,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465943 conditions, 27608 events. 6942/27608 cut-off events. For 2469115/2651066 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 370037 event pairs, 234 based on Foata normal form. 648/26801 useless extension candidates. Maximal degree in co-relation 365625. Up to 8336 conditions per place. [2022-12-06 17:19:05,412 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 2789 selfloop transitions, 142 changer transitions 914/4032 dead transitions. [2022-12-06 17:19:05,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1470 places, 4032 transitions, 280003 flow [2022-12-06 17:19:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-06 17:19:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-06 17:19:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7212 transitions. [2022-12-06 17:19:05,415 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5888789091206009 [2022-12-06 17:19:05,415 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1170 predicate places. [2022-12-06 17:19:05,415 INFO L495 AbstractCegarLoop]: Abstraction has has 1470 places, 4032 transitions, 280003 flow [2022-12-06 17:19:05,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:19:05,416 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:19:05,416 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:19:05,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-06 17:19:05,416 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:19:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:19:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1860181481, now seen corresponding path program 35 times [2022-12-06 17:19:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:19:05,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947791384] [2022-12-06 17:19:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:19:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:19:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:19:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:19:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:19:06,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947791384] [2022-12-06 17:19:06,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947791384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:19:06,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:19:06,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:19:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542760262] [2022-12-06 17:19:06,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:19:06,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:19:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:19:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:19:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:19:06,041 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:19:06,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1470 places, 4032 transitions, 280003 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:19:06,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:19:06,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:19:06,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:19:31,255 INFO L130 PetriNetUnfolder]: 7518/30133 cut-off events. [2022-12-06 17:19:31,256 INFO L131 PetriNetUnfolder]: For 2692907/2858056 co-relation queries the response was YES. [2022-12-06 17:19:31,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516388 conditions, 30133 events. 7518/30133 cut-off events. For 2692907/2858056 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 409514 event pairs, 466 based on Foata normal form. 271/28828 useless extension candidates. Maximal degree in co-relation 407208. Up to 9172 conditions per place. [2022-12-06 17:19:31,634 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 2985 selfloop transitions, 146 changer transitions 942/4260 dead transitions. [2022-12-06 17:19:31,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1503 places, 4260 transitions, 304696 flow [2022-12-06 17:19:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-06 17:19:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-06 17:19:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6635 transitions. [2022-12-06 17:19:31,637 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.589568153545406 [2022-12-06 17:19:31,637 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1203 predicate places. [2022-12-06 17:19:31,637 INFO L495 AbstractCegarLoop]: Abstraction has has 1503 places, 4260 transitions, 304696 flow [2022-12-06 17:19:31,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:19:31,638 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:19:31,638 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:19:31,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-06 17:19:31,638 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:19:31,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:19:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1014688987, now seen corresponding path program 36 times [2022-12-06 17:19:31,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:19:31,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134550117] [2022-12-06 17:19:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:19:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:19:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:19:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:19:32,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:19:32,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134550117] [2022-12-06 17:19:32,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134550117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:19:32,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:19:32,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:19:32,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503764063] [2022-12-06 17:19:32,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:19:32,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:19:32,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:19:32,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:19:32,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:19:32,776 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:19:32,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1503 places, 4260 transitions, 304696 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:19:32,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:19:32,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:19:32,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:20:02,481 INFO L130 PetriNetUnfolder]: 7446/30174 cut-off events. [2022-12-06 17:20:02,481 INFO L131 PetriNetUnfolder]: For 2815095/2979063 co-relation queries the response was YES. [2022-12-06 17:20:02,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528281 conditions, 30174 events. 7446/30174 cut-off events. For 2815095/2979063 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 412100 event pairs, 388 based on Foata normal form. 1369/29958 useless extension candidates. Maximal degree in co-relation 415565. Up to 9172 conditions per place. [2022-12-06 17:20:02,893 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2826 selfloop transitions, 342 changer transitions 967/4297 dead transitions. [2022-12-06 17:20:02,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1553 places, 4297 transitions, 315721 flow [2022-12-06 17:20:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:20:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:20:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8366 transitions. [2022-12-06 17:20:02,897 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4955867543391979 [2022-12-06 17:20:02,897 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1253 predicate places. [2022-12-06 17:20:02,897 INFO L495 AbstractCegarLoop]: Abstraction has has 1553 places, 4297 transitions, 315721 flow [2022-12-06 17:20:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:20:02,898 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:20:02,898 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:20:02,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-06 17:20:02,898 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:20:02,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:20:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1443929695, now seen corresponding path program 37 times [2022-12-06 17:20:02,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:20:02,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029191942] [2022-12-06 17:20:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:20:02,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:20:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:20:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:20:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:20:03,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029191942] [2022-12-06 17:20:03,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029191942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:20:03,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:20:03,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:20:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420865255] [2022-12-06 17:20:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:20:03,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:20:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:20:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:20:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:20:03,940 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:20:03,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1553 places, 4297 transitions, 315721 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:20:03,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:20:03,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:20:03,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:20:34,858 INFO L130 PetriNetUnfolder]: 7500/29855 cut-off events. [2022-12-06 17:20:34,858 INFO L131 PetriNetUnfolder]: For 3030104/3211079 co-relation queries the response was YES. [2022-12-06 17:20:34,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543478 conditions, 29855 events. 7500/29855 cut-off events. For 3030104/3211079 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 405387 event pairs, 258 based on Foata normal form. 1741/30055 useless extension candidates. Maximal degree in co-relation 427528. Up to 9211 conditions per place. [2022-12-06 17:20:35,337 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2819 selfloop transitions, 336 changer transitions 992/4309 dead transitions. [2022-12-06 17:20:35,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1602 places, 4309 transitions, 324949 flow [2022-12-06 17:20:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-06 17:20:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-06 17:20:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8204 transitions. [2022-12-06 17:20:35,341 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4957099697885196 [2022-12-06 17:20:35,341 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1302 predicate places. [2022-12-06 17:20:35,341 INFO L495 AbstractCegarLoop]: Abstraction has has 1602 places, 4309 transitions, 324949 flow [2022-12-06 17:20:35,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:20:35,342 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:20:35,342 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:20:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-06 17:20:35,342 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:20:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:20:35,343 INFO L85 PathProgramCache]: Analyzing trace with hash -574533921, now seen corresponding path program 38 times [2022-12-06 17:20:35,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:20:35,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583444068] [2022-12-06 17:20:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:20:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:20:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:20:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:20:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:20:36,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583444068] [2022-12-06 17:20:36,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583444068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:20:36,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:20:36,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:20:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943540394] [2022-12-06 17:20:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:20:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:20:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:20:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:20:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:20:36,493 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:20:36,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1602 places, 4309 transitions, 324949 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:20:36,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:20:36,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:20:36,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:08,097 INFO L130 PetriNetUnfolder]: 7454/30181 cut-off events. [2022-12-06 17:21:08,098 INFO L131 PetriNetUnfolder]: For 3119826/3265420 co-relation queries the response was YES. [2022-12-06 17:21:08,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556693 conditions, 30181 events. 7454/30181 cut-off events. For 3119826/3265420 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 411731 event pairs, 452 based on Foata normal form. 1414/30031 useless extension candidates. Maximal degree in co-relation 437640. Up to 9179 conditions per place. [2022-12-06 17:21:08,518 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2803 selfloop transitions, 344 changer transitions 1017/4326 dead transitions. [2022-12-06 17:21:08,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1651 places, 4326 transitions, 334630 flow [2022-12-06 17:21:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-06 17:21:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-06 17:21:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 8210 transitions. [2022-12-06 17:21:08,522 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4960725075528701 [2022-12-06 17:21:08,523 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1351 predicate places. [2022-12-06 17:21:08,523 INFO L495 AbstractCegarLoop]: Abstraction has has 1651 places, 4326 transitions, 334630 flow [2022-12-06 17:21:08,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:08,523 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:08,523 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:08,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-06 17:21:08,524 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1841914907, now seen corresponding path program 39 times [2022-12-06 17:21:08,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:08,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568401899] [2022-12-06 17:21:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:21:09,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:09,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568401899] [2022-12-06 17:21:09,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568401899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:09,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:09,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:21:09,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29684369] [2022-12-06 17:21:09,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:09,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:21:09,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:09,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:21:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:21:09,725 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:21:09,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1651 places, 4326 transitions, 334630 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:09,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:09,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:21:09,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:21:45,092 INFO L130 PetriNetUnfolder]: 7469/30374 cut-off events. [2022-12-06 17:21:45,093 INFO L131 PetriNetUnfolder]: For 3301885/3451189 co-relation queries the response was YES. [2022-12-06 17:21:45,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570679 conditions, 30374 events. 7469/30374 cut-off events. For 3301885/3451189 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 415689 event pairs, 357 based on Foata normal form. 1479/30244 useless extension candidates. Maximal degree in co-relation 448786. Up to 9209 conditions per place. [2022-12-06 17:21:45,588 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2784 selfloop transitions, 338 changer transitions 1041/4325 dead transitions. [2022-12-06 17:21:45,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1701 places, 4325 transitions, 342874 flow [2022-12-06 17:21:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:21:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:21:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8366 transitions. [2022-12-06 17:21:45,592 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4955867543391979 [2022-12-06 17:21:45,593 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1401 predicate places. [2022-12-06 17:21:45,593 INFO L495 AbstractCegarLoop]: Abstraction has has 1701 places, 4325 transitions, 342874 flow [2022-12-06 17:21:45,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:45,593 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:21:45,593 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:21:45,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-06 17:21:45,594 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:21:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:21:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash -212867917, now seen corresponding path program 40 times [2022-12-06 17:21:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:21:45,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917578543] [2022-12-06 17:21:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:21:45,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:21:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:21:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:21:47,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:21:47,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917578543] [2022-12-06 17:21:47,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917578543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:21:47,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:21:47,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:21:47,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633998533] [2022-12-06 17:21:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:21:47,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:21:47,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:21:47,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:21:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:21:47,445 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:21:47,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1701 places, 4325 transitions, 342874 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:21:47,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:21:47,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:21:47,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:22:22,628 INFO L130 PetriNetUnfolder]: 7619/30940 cut-off events. [2022-12-06 17:22:22,628 INFO L131 PetriNetUnfolder]: For 3588890/3769658 co-relation queries the response was YES. [2022-12-06 17:22:22,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597789 conditions, 30940 events. 7619/30940 cut-off events. For 3588890/3769658 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 424745 event pairs, 493 based on Foata normal form. 1169/30521 useless extension candidates. Maximal degree in co-relation 469294. Up to 9514 conditions per place. [2022-12-06 17:22:23,091 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2898 selfloop transitions, 328 changer transitions 1069/4457 dead transitions. [2022-12-06 17:22:23,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1752 places, 4457 transitions, 362324 flow [2022-12-06 17:22:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-06 17:22:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-06 17:22:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8528 transitions. [2022-12-06 17:22:23,095 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4954682779456193 [2022-12-06 17:22:23,095 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1452 predicate places. [2022-12-06 17:22:23,095 INFO L495 AbstractCegarLoop]: Abstraction has has 1752 places, 4457 transitions, 362324 flow [2022-12-06 17:22:23,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:22:23,096 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:22:23,096 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:22:23,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-06 17:22:23,096 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:22:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:22:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash -991205993, now seen corresponding path program 41 times [2022-12-06 17:22:23,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:22:23,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127718197] [2022-12-06 17:22:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:22:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:22:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:22:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:22:24,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:22:24,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127718197] [2022-12-06 17:22:24,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127718197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:22:24,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:22:24,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:22:24,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43630138] [2022-12-06 17:22:24,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:22:24,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:22:24,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:22:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:22:24,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:22:24,278 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:22:24,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1752 places, 4457 transitions, 362324 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:22:24,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:22:24,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:22:24,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:23:04,298 INFO L130 PetriNetUnfolder]: 7726/31202 cut-off events. [2022-12-06 17:23:04,298 INFO L131 PetriNetUnfolder]: For 3790204/3974632 co-relation queries the response was YES. [2022-12-06 17:23:04,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620398 conditions, 31202 events. 7726/31202 cut-off events. For 3790204/3974632 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 428421 event pairs, 416 based on Foata normal form. 1091/30699 useless extension candidates. Maximal degree in co-relation 485575. Up to 9647 conditions per place. [2022-12-06 17:23:04,855 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2923 selfloop transitions, 318 changer transitions 1096/4499 dead transitions. [2022-12-06 17:23:04,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1799 places, 4499 transitions, 374629 flow [2022-12-06 17:23:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 17:23:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 17:23:04,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7883 transitions. [2022-12-06 17:23:04,859 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49616062437059416 [2022-12-06 17:23:04,859 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1499 predicate places. [2022-12-06 17:23:04,859 INFO L495 AbstractCegarLoop]: Abstraction has has 1799 places, 4499 transitions, 374629 flow [2022-12-06 17:23:04,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:23:04,860 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:23:04,860 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:23:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-06 17:23:04,860 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:23:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:23:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2117718497, now seen corresponding path program 42 times [2022-12-06 17:23:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:23:04,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796598455] [2022-12-06 17:23:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:23:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:23:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:23:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:23:05,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:23:05,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796598455] [2022-12-06 17:23:05,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796598455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:23:05,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:23:05,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:23:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483459966] [2022-12-06 17:23:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:23:05,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:23:05,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:23:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:23:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:23:05,982 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:23:05,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1799 places, 4499 transitions, 374629 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:23:05,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:23:05,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:23:05,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:23:45,450 INFO L130 PetriNetUnfolder]: 7720/31444 cut-off events. [2022-12-06 17:23:45,451 INFO L131 PetriNetUnfolder]: For 3986807/4177890 co-relation queries the response was YES. [2022-12-06 17:23:45,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633026 conditions, 31444 events. 7720/31444 cut-off events. For 3986807/4177890 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 433176 event pairs, 454 based on Foata normal form. 1127/30941 useless extension candidates. Maximal degree in co-relation 494705. Up to 9630 conditions per place. [2022-12-06 17:23:45,907 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2913 selfloop transitions, 322 changer transitions 1119/4516 dead transitions. [2022-12-06 17:23:45,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1845 places, 4516 transitions, 384826 flow [2022-12-06 17:23:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-06 17:23:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-06 17:23:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7715 transitions. [2022-12-06 17:23:45,910 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4959182361637848 [2022-12-06 17:23:45,911 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1545 predicate places. [2022-12-06 17:23:45,911 INFO L495 AbstractCegarLoop]: Abstraction has has 1845 places, 4516 transitions, 384826 flow [2022-12-06 17:23:45,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:23:45,912 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:23:45,912 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:23:45,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-06 17:23:45,912 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:23:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:23:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1042705023, now seen corresponding path program 43 times [2022-12-06 17:23:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:23:45,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597705846] [2022-12-06 17:23:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:23:45,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:23:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:23:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:23:47,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:23:47,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597705846] [2022-12-06 17:23:47,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597705846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:23:47,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:23:47,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:23:47,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693529146] [2022-12-06 17:23:47,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:23:47,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:23:47,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:23:47,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:23:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:23:47,085 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:23:47,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1845 places, 4516 transitions, 384826 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:23:47,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:23:47,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:23:47,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:24:29,383 INFO L130 PetriNetUnfolder]: 7743/31205 cut-off events. [2022-12-06 17:24:29,384 INFO L131 PetriNetUnfolder]: For 4284453/4534506 co-relation queries the response was YES. [2022-12-06 17:24:29,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647474 conditions, 31205 events. 7743/31205 cut-off events. For 4284453/4534506 co-relation queries the response was YES. Maximal size of possible extension queue 1161. Compared 428007 event pairs, 370 based on Foata normal form. 1177/30775 useless extension candidates. Maximal degree in co-relation 506260. Up to 9642 conditions per place. [2022-12-06 17:24:29,840 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 2892 selfloop transitions, 316 changer transitions 1145/4515 dead transitions. [2022-12-06 17:24:29,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1892 places, 4515 transitions, 393442 flow [2022-12-06 17:24:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-06 17:24:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-06 17:24:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7877 transitions. [2022-12-06 17:24:29,844 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49578298086606243 [2022-12-06 17:24:29,844 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1592 predicate places. [2022-12-06 17:24:29,844 INFO L495 AbstractCegarLoop]: Abstraction has has 1892 places, 4515 transitions, 393442 flow [2022-12-06 17:24:29,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:24:29,845 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:24:29,845 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:24:29,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-06 17:24:29,845 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:24:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:24:29,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1981133689, now seen corresponding path program 44 times [2022-12-06 17:24:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:24:29,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250814763] [2022-12-06 17:24:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:24:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:24:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:24:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:24:30,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:24:30,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250814763] [2022-12-06 17:24:30,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250814763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:24:30,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:24:30,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:24:30,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854688876] [2022-12-06 17:24:30,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:24:30,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:24:30,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:24:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:24:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:24:30,626 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 331 [2022-12-06 17:24:30,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1892 places, 4515 transitions, 393442 flow. Second operand has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:24:30,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:24:30,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 331 [2022-12-06 17:24:30,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:25:11,698 INFO L130 PetriNetUnfolder]: 7830/32076 cut-off events. [2022-12-06 17:25:11,698 INFO L131 PetriNetUnfolder]: For 4474634/4695279 co-relation queries the response was YES. [2022-12-06 17:25:11,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673469 conditions, 32076 events. 7830/32076 cut-off events. For 4474634/4695279 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 444293 event pairs, 453 based on Foata normal form. 419/30817 useless extension candidates. Maximal degree in co-relation 525315. Up to 9899 conditions per place. [2022-12-06 17:25:12,189 INFO L137 encePairwiseOnDemand]: 297/331 looper letters, 3111 selfloop transitions, 149 changer transitions 1173/4620 dead transitions. [2022-12-06 17:25:12,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1928 places, 4620 transitions, 411832 flow [2022-12-06 17:25:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-06 17:25:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-06 17:25:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7212 transitions. [2022-12-06 17:25:12,192 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5888789091206009 [2022-12-06 17:25:12,193 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1628 predicate places. [2022-12-06 17:25:12,193 INFO L495 AbstractCegarLoop]: Abstraction has has 1928 places, 4620 transitions, 411832 flow [2022-12-06 17:25:12,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.75) internal successors, (3052), 16 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:25:12,193 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:25:12,193 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:25:12,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-06 17:25:12,193 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:25:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:25:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1367992885, now seen corresponding path program 45 times [2022-12-06 17:25:12,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:25:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110875753] [2022-12-06 17:25:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:25:12,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:25:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:25:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:25:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:25:13,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110875753] [2022-12-06 17:25:13,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110875753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:25:13,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:25:13,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:25:13,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116798083] [2022-12-06 17:25:13,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:25:13,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:25:13,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:25:13,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:25:13,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:25:13,271 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:25:13,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1928 places, 4620 transitions, 411832 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:25:13,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:25:13,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:25:13,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:25:58,034 INFO L130 PetriNetUnfolder]: 8101/33225 cut-off events. [2022-12-06 17:25:58,035 INFO L131 PetriNetUnfolder]: For 4919485/5156996 co-relation queries the response was YES. [2022-12-06 17:25:58,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711947 conditions, 33225 events. 8101/33225 cut-off events. For 4919485/5156996 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 463763 event pairs, 505 based on Foata normal form. 1230/32748 useless extension candidates. Maximal degree in co-relation 553276. Up to 10278 conditions per place. [2022-12-06 17:25:58,644 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 3130 selfloop transitions, 303 changer transitions 1202/4797 dead transitions. [2022-12-06 17:25:58,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1983 places, 4797 transitions, 437500 flow [2022-12-06 17:25:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-06 17:25:58,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-12-06 17:25:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 9182 transitions. [2022-12-06 17:25:58,649 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4953603798014674 [2022-12-06 17:25:58,649 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1683 predicate places. [2022-12-06 17:25:58,650 INFO L495 AbstractCegarLoop]: Abstraction has has 1983 places, 4797 transitions, 437500 flow [2022-12-06 17:25:58,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:25:58,650 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:25:58,650 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:25:58,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-06 17:25:58,650 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:25:58,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:25:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1168385799, now seen corresponding path program 46 times [2022-12-06 17:25:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:25:58,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953656037] [2022-12-06 17:25:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:25:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:25:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:25:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:25:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:25:59,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953656037] [2022-12-06 17:25:59,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953656037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:25:59,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:25:59,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:25:59,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674125925] [2022-12-06 17:25:59,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:25:59,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:25:59,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:25:59,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:25:59,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:25:59,818 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:25:59,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1983 places, 4797 transitions, 437500 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:25:59,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:25:59,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:25:59,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:26:49,754 INFO L130 PetriNetUnfolder]: 8158/33582 cut-off events. [2022-12-06 17:26:49,755 INFO L131 PetriNetUnfolder]: For 5150548/5384935 co-relation queries the response was YES. [2022-12-06 17:26:49,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732218 conditions, 33582 events. 8158/33582 cut-off events. For 5150548/5384935 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 470120 event pairs, 454 based on Foata normal form. 1072/32897 useless extension candidates. Maximal degree in co-relation 566226. Up to 10398 conditions per place. [2022-12-06 17:26:50,399 INFO L137 encePairwiseOnDemand]: 281/331 looper letters, 3191 selfloop transitions, 298 changer transitions 1230/4881 dead transitions. [2022-12-06 17:26:50,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2033 places, 4881 transitions, 454934 flow [2022-12-06 17:26:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-06 17:26:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-06 17:26:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8373 transitions. [2022-12-06 17:26:50,404 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49600142171672296 [2022-12-06 17:26:50,404 INFO L294 CegarLoopForPetriNet]: 300 programPoint places, 1733 predicate places. [2022-12-06 17:26:50,404 INFO L495 AbstractCegarLoop]: Abstraction has has 2033 places, 4881 transitions, 454934 flow [2022-12-06 17:26:50,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:26:50,405 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:26:50,405 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:26:50,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-06 17:26:50,405 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 17:26:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:26:50,405 INFO L85 PathProgramCache]: Analyzing trace with hash -942077781, now seen corresponding path program 47 times [2022-12-06 17:26:50,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:26:50,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953053755] [2022-12-06 17:26:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:26:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:26:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:26:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-06 17:26:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:26:51,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953053755] [2022-12-06 17:26:51,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953053755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:26:51,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:26:51,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-12-06 17:26:51,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534077888] [2022-12-06 17:26:51,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:26:51,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 17:26:51,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:26:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 17:26:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-12-06 17:26:51,653 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 331 [2022-12-06 17:26:51,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2033 places, 4881 transitions, 454934 flow. Second operand has 30 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:26:51,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:26:51,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 331 [2022-12-06 17:26:51,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 17:26:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-06 17:26:59,149 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 17:26:59,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-06 17:26:59,150 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 53,while PetriNetUnfolder was constructing finite prefix that currently has 123992 conditions, 3426 events (1406/3425 cut-off events. For 549296/561394 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 31599 event pairs, 5 based on Foata normal form. 286/4071 useless extension candidates. Maximal degree in co-relation 118904. Up to 1160 conditions per place.). [2022-12-06 17:26:59,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 17:26:59,151 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 17:26:59,151 INFO L458 BasicCegarLoop]: Path program histogram: [47, 1, 1, 1, 1, 1, 1] [2022-12-06 17:26:59,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 17:26:59,154 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 17:26:59,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:26:59 BasicIcfg [2022-12-06 17:26:59,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 17:26:59,157 INFO L158 Benchmark]: Toolchain (without parser) took 781348.14ms. Allocated memory was 224.4MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 201.4MB in the beginning and 600.1MB in the end (delta: -398.7MB). Peak memory consumption was 3.5GB. Max. memory is 8.0GB. [2022-12-06 17:26:59,157 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 224.4MB. Free memory is still 201.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 17:26:59,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.12ms. Allocated memory is still 224.4MB. Free memory was 200.9MB in the beginning and 189.1MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-06 17:26:59,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.76ms. Allocated memory is still 224.4MB. Free memory was 188.6MB in the beginning and 185.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:26:59,157 INFO L158 Benchmark]: Boogie Preprocessor took 28.08ms. Allocated memory is still 224.4MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:26:59,157 INFO L158 Benchmark]: RCFGBuilder took 577.34ms. Allocated memory is still 224.4MB. Free memory was 183.8MB in the beginning and 158.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-12-06 17:26:59,157 INFO L158 Benchmark]: TraceAbstraction took 780419.15ms. Allocated memory was 224.4MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 158.2MB in the beginning and 600.1MB in the end (delta: -441.9MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2022-12-06 17:26:59,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 224.4MB. Free memory is still 201.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 261.12ms. Allocated memory is still 224.4MB. Free memory was 200.9MB in the beginning and 189.1MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.76ms. Allocated memory is still 224.4MB. Free memory was 188.6MB in the beginning and 185.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.08ms. Allocated memory is still 224.4MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 577.34ms. Allocated memory is still 224.4MB. Free memory was 183.8MB in the beginning and 158.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 780419.15ms. Allocated memory was 224.4MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 158.2MB in the beginning and 600.1MB in the end (delta: -441.9MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 53,while PetriNetUnfolder was constructing finite prefix that currently has 123992 conditions, 3426 events (1406/3425 cut-off events. For 549296/561394 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 31599 event pairs, 5 based on Foata normal form. 286/4071 useless extension candidates. Maximal degree in co-relation 118904. Up to 1160 conditions per place.). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 53,while PetriNetUnfolder was constructing finite prefix that currently has 123992 conditions, 3426 events (1406/3425 cut-off events. For 549296/561394 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 31599 event pairs, 5 based on Foata normal form. 286/4071 useless extension candidates. Maximal degree in co-relation 118904. Up to 1160 conditions per place.). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (30states, 156/331 universal loopers) in iteration 53,while PetriNetUnfolder was constructing finite prefix that currently has 123992 conditions, 3426 events (1406/3425 cut-off events. For 549296/561394 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 31599 event pairs, 5 based on Foata normal form. 286/4071 useless extension candidates. Maximal degree in co-relation 118904. Up to 1160 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 396 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 780.3s, OverallIterations: 53, TraceHistogramMax: 1, PathProgramHistogramMax: 47, EmptinessCheckTime: 0.0s, AutomataDifference: 730.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24032 SdHoareTripleChecker+Valid, 37.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24032 mSDsluCounter, 101813 SdHoareTripleChecker+Invalid, 31.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93678 mSDsCounter, 888 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86782 IncrementalHoareTripleChecker+Invalid, 87670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 888 mSolverCounterUnsat, 8135 mSDtfsCounter, 86782 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3717 GetRequests, 1297 SyntacticMatches, 6 SemanticMatches, 2414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24000 ImplicationChecksByTransitivity, 55.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=454934occurred in iteration=52, InterpolantAutomatonStates: 1785, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 46.2s InterpolantComputationTime, 13218 NumberOfCodeBlocks, 13218 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 13622 ConstructedInterpolants, 0 QuantifiedInterpolants, 108961 SizeOfPredicates, 14 NumberOfNonLiveVariables, 984 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 57 InterpolantComputations, 53 PerfectInterpolantSequences, 198/202 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