/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:03:05,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:03:05,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:03:05,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:03:05,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:03:05,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:03:05,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:03:05,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:03:05,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:03:05,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:03:05,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:03:05,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:03:05,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:03:05,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:03:05,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:03:05,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:03:05,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:03:05,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:03:05,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:03:05,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:03:05,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:03:05,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:03:05,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:03:05,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:03:05,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:03:05,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:03:05,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:03:05,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:03:05,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:03:05,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:03:05,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:03:05,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:03:05,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:03:05,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:03:05,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:03:05,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:03:05,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:03:05,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:03:05,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:03:05,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:03:05,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:03:05,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 21:03:05,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:03:05,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:03:05,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:03:05,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:03:05,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:03:05,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:03:05,325 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:03:05,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:03:05,325 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:03:05,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:03:05,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:03:05,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:03:05,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:03:05,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:03:05,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:03:05,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:03:05,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:03:05,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:03:05,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:03:05,596 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:03:05,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2022-12-05 21:03:06,654 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:03:06,797 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:03:06,797 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2022-12-05 21:03:06,810 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37197b343/dab62189ffea40c5951d3da755b65a77/FLAG1448765be [2022-12-05 21:03:07,214 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37197b343/dab62189ffea40c5951d3da755b65a77 [2022-12-05 21:03:07,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:03:07,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:03:07,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:03:07,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:03:07,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:03:07,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae9f47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07, skipping insertion in model container [2022-12-05 21:03:07,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:03:07,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:03:07,416 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-subst.wvr.c[3996,4009] [2022-12-05 21:03:07,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:03:07,449 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:03:07,482 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-subst.wvr.c[3996,4009] [2022-12-05 21:03:07,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:03:07,498 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:03:07,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07 WrapperNode [2022-12-05 21:03:07,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:03:07,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:03:07,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:03:07,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:03:07,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,564 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-12-05 21:03:07,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:03:07,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:03:07,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:03:07,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:03:07,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:03:07,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:03:07,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:03:07,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:03:07,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (1/1) ... [2022-12-05 21:03:07,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:03:07,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:07,642 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) [2022-12-05 21:03:07,645 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 [2022-12-05 21:03:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:03:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:03:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:03:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:03:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:03:07,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:03:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:03:07,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:03:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:03:07,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:03:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:03:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 21:03:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:03:07,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:03:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:03:07,672 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:03:07,817 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:03:07,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:03:08,150 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:03:08,160 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:03:08,160 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-05 21:03:08,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:03:08 BoogieIcfgContainer [2022-12-05 21:03:08,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:03:08,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:03:08,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:03:08,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:03:08,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:03:07" (1/3) ... [2022-12-05 21:03:08,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da7c29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:03:08, skipping insertion in model container [2022-12-05 21:03:08,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:03:07" (2/3) ... [2022-12-05 21:03:08,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da7c29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:03:08, skipping insertion in model container [2022-12-05 21:03:08,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:03:08" (3/3) ... [2022-12-05 21:03:08,167 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-12-05 21:03:08,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:03:08,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:03:08,179 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:03:08,266 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 21:03:08,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 483 transitions, 990 flow [2022-12-05 21:03:08,496 INFO L130 PetriNetUnfolder]: 41/480 cut-off events. [2022-12-05 21:03:08,496 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:03:08,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 480 events. 41/480 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 632 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 406. Up to 2 conditions per place. [2022-12-05 21:03:08,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 483 transitions, 990 flow [2022-12-05 21:03:08,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 439 places, 470 transitions, 958 flow [2022-12-05 21:03:08,514 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:03:08,535 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 439 places, 470 transitions, 958 flow [2022-12-05 21:03:08,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 439 places, 470 transitions, 958 flow [2022-12-05 21:03:08,598 INFO L130 PetriNetUnfolder]: 41/470 cut-off events. [2022-12-05 21:03:08,599 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:03:08,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 470 events. 41/470 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 630 event pairs, 0 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 406. Up to 2 conditions per place. [2022-12-05 21:03:08,611 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 439 places, 470 transitions, 958 flow [2022-12-05 21:03:08,611 INFO L188 LiptonReduction]: Number of co-enabled transitions 17280 [2022-12-05 21:03:25,379 INFO L203 LiptonReduction]: Total number of compositions: 429 [2022-12-05 21:03:25,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:03:25,401 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;@5e145d2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:03:25,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 21:03:25,408 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2022-12-05 21:03:25,408 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:03:25,408 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:25,409 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] [2022-12-05 21:03:25,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -237819189, now seen corresponding path program 1 times [2022-12-05 21:03:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:25,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975366530] [2022-12-05 21:03:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:25,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975366530] [2022-12-05 21:03:25,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975366530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:25,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:25,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:25,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273373518] [2022-12-05 21:03:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:03:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:03:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:03:25,711 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-05 21:03:25,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:25,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:25,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-05 21:03:25,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:25,893 INFO L130 PetriNetUnfolder]: 727/1071 cut-off events. [2022-12-05 21:03:25,893 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-12-05 21:03:25,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 1071 events. 727/1071 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4030 event pairs, 405 based on Foata normal form. 0/881 useless extension candidates. Maximal degree in co-relation 2079. Up to 795 conditions per place. [2022-12-05 21:03:25,899 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 52 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2022-12-05 21:03:25,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 246 flow [2022-12-05 21:03:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:03:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:03:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2022-12-05 21:03:25,909 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2022-12-05 21:03:25,911 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 59 transitions. [2022-12-05 21:03:25,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 246 flow [2022-12-05 21:03:25,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 230 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 21:03:25,916 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2022-12-05 21:03:25,918 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2022-12-05 21:03:25,921 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2022-12-05 21:03:25,922 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2022-12-05 21:03:25,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:25,923 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:25,923 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] [2022-12-05 21:03:25,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:03:25,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2107721905, now seen corresponding path program 1 times [2022-12-05 21:03:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:25,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484856980] [2022-12-05 21:03:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:26,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484856980] [2022-12-05 21:03:26,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484856980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:26,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:26,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685160192] [2022-12-05 21:03:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:03:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:03:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:03:26,085 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-05 21:03:26,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:26,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:26,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-05 21:03:26,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:26,277 INFO L130 PetriNetUnfolder]: 835/1231 cut-off events. [2022-12-05 21:03:26,277 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2022-12-05 21:03:26,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 1231 events. 835/1231 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4580 event pairs, 445 based on Foata normal form. 0/1116 useless extension candidates. Maximal degree in co-relation 1476. Up to 857 conditions per place. [2022-12-05 21:03:26,282 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 55 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2022-12-05 21:03:26,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 274 flow [2022-12-05 21:03:26,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:03:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:03:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-12-05 21:03:26,284 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-12-05 21:03:26,284 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 60 transitions. [2022-12-05 21:03:26,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 274 flow [2022-12-05 21:03:26,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:26,286 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2022-12-05 21:03:26,286 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2022-12-05 21:03:26,286 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2022-12-05 21:03:26,287 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2022-12-05 21:03:26,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:26,287 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:26,287 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] [2022-12-05 21:03:26,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:03:26,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:26,287 INFO L85 PathProgramCache]: Analyzing trace with hash 865441644, now seen corresponding path program 1 times [2022-12-05 21:03:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:26,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487367557] [2022-12-05 21:03:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:03:26,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487367557] [2022-12-05 21:03:26,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487367557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:26,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:26,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:03:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518424050] [2022-12-05 21:03:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:26,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:03:26,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:26,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:03:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:03:26,397 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-05 21:03:26,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:26,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:26,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-05 21:03:26,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:26,540 INFO L130 PetriNetUnfolder]: 835/1232 cut-off events. [2022-12-05 21:03:26,541 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2022-12-05 21:03:26,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3167 conditions, 1232 events. 835/1232 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4559 event pairs, 637 based on Foata normal form. 0/1177 useless extension candidates. Maximal degree in co-relation 1604. Up to 1229 conditions per place. [2022-12-05 21:03:26,546 INFO L137 encePairwiseOnDemand]: 39/42 looper letters, 42 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-05 21:03:26,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 210 flow [2022-12-05 21:03:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:03:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:03:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2022-12-05 21:03:26,549 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2022-12-05 21:03:26,549 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 3 states and 46 transitions. [2022-12-05 21:03:26,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 210 flow [2022-12-05 21:03:26,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:26,553 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 126 flow [2022-12-05 21:03:26,553 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-12-05 21:03:26,554 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2022-12-05 21:03:26,554 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 126 flow [2022-12-05 21:03:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:26,554 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:26,554 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] [2022-12-05 21:03:26,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:03:26,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:26,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:26,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1661224299, now seen corresponding path program 1 times [2022-12-05 21:03:26,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:26,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006259667] [2022-12-05 21:03:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:03:26,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:26,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006259667] [2022-12-05 21:03:26,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006259667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:26,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:26,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:26,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070989537] [2022-12-05 21:03:26,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:26,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:03:26,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:03:26,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:03:26,725 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-05 21:03:26,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:26,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:26,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-05 21:03:26,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:26,872 INFO L130 PetriNetUnfolder]: 835/1233 cut-off events. [2022-12-05 21:03:26,872 INFO L131 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2022-12-05 21:03:26,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 1233 events. 835/1233 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4553 event pairs, 637 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 3006. Up to 1228 conditions per place. [2022-12-05 21:03:26,877 INFO L137 encePairwiseOnDemand]: 37/42 looper letters, 41 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2022-12-05 21:03:26,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 218 flow [2022-12-05 21:03:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:03:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:03:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2022-12-05 21:03:26,878 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2022-12-05 21:03:26,878 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 126 flow. Second operand 4 states and 48 transitions. [2022-12-05 21:03:26,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 218 flow [2022-12-05 21:03:26,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 214 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:03:26,880 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 140 flow [2022-12-05 21:03:26,880 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-12-05 21:03:26,880 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2022-12-05 21:03:26,880 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 140 flow [2022-12-05 21:03:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:26,881 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:26,881 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] [2022-12-05 21:03:26,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 21:03:26,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash 655201301, now seen corresponding path program 1 times [2022-12-05 21:03:26,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:26,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140299714] [2022-12-05 21:03:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:26,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:03:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:26,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140299714] [2022-12-05 21:03:27,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140299714] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:27,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:27,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825712505] [2022-12-05 21:03:27,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:27,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:03:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:03:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:03:27,001 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-05 21:03:27,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:27,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:27,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-05 21:03:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:27,174 INFO L130 PetriNetUnfolder]: 835/1234 cut-off events. [2022-12-05 21:03:27,174 INFO L131 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2022-12-05 21:03:27,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3028 conditions, 1234 events. 835/1234 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4559 event pairs, 637 based on Foata normal form. 0/1128 useless extension candidates. Maximal degree in co-relation 3006. Up to 1230 conditions per place. [2022-12-05 21:03:27,179 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 43 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2022-12-05 21:03:27,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 234 flow [2022-12-05 21:03:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:03:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:03:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-05 21:03:27,180 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.27976190476190477 [2022-12-05 21:03:27,180 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 140 flow. Second operand 4 states and 47 transitions. [2022-12-05 21:03:27,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 234 flow [2022-12-05 21:03:27,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 21:03:27,182 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 153 flow [2022-12-05 21:03:27,182 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2022-12-05 21:03:27,182 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2022-12-05 21:03:27,182 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 153 flow [2022-12-05 21:03:27,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:27,183 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:27,183 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] [2022-12-05 21:03:27,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 21:03:27,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash 911195685, now seen corresponding path program 1 times [2022-12-05 21:03:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:27,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604090840] [2022-12-05 21:03:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:27,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:03:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:27,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604090840] [2022-12-05 21:03:27,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604090840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:27,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:27,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592968330] [2022-12-05 21:03:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:03:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:03:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:03:27,287 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:27,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:27,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:27,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:27,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:27,450 INFO L130 PetriNetUnfolder]: 943/1392 cut-off events. [2022-12-05 21:03:27,450 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-12-05 21:03:27,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 1392 events. 943/1392 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5044 event pairs, 733 based on Foata normal form. 0/1286 useless extension candidates. Maximal degree in co-relation 3368. Up to 1391 conditions per place. [2022-12-05 21:03:27,456 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-12-05 21:03:27,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 251 flow [2022-12-05 21:03:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:03:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:03:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2022-12-05 21:03:27,457 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2619047619047619 [2022-12-05 21:03:27,457 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 153 flow. Second operand 4 states and 44 transitions. [2022-12-05 21:03:27,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 251 flow [2022-12-05 21:03:27,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:27,460 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 161 flow [2022-12-05 21:03:27,460 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2022-12-05 21:03:27,460 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2022-12-05 21:03:27,460 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 161 flow [2022-12-05 21:03:27,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:27,460 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:27,461 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] [2022-12-05 21:03:27,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 21:03:27,461 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1277366385, now seen corresponding path program 1 times [2022-12-05 21:03:27,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:27,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627161696] [2022-12-05 21:03:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 21:03:27,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:27,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627161696] [2022-12-05 21:03:27,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627161696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:27,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:27,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:27,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538097810] [2022-12-05 21:03:27,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:27,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:03:27,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:27,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:03:27,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:03:27,592 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-05 21:03:27,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:27,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:27,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-05 21:03:27,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:27,740 INFO L130 PetriNetUnfolder]: 835/1236 cut-off events. [2022-12-05 21:03:27,740 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-12-05 21:03:27,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 1236 events. 835/1236 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4559 event pairs, 637 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 3018. Up to 1232 conditions per place. [2022-12-05 21:03:27,746 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 45 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2022-12-05 21:03:27,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 259 flow [2022-12-05 21:03:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:03:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:03:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-05 21:03:27,747 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.27976190476190477 [2022-12-05 21:03:27,747 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 161 flow. Second operand 4 states and 47 transitions. [2022-12-05 21:03:27,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 259 flow [2022-12-05 21:03:27,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 253 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:27,749 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 169 flow [2022-12-05 21:03:27,749 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2022-12-05 21:03:27,749 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2022-12-05 21:03:27,750 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 169 flow [2022-12-05 21:03:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:27,750 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:27,750 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] [2022-12-05 21:03:27,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 21:03:27,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1089820152, now seen corresponding path program 1 times [2022-12-05 21:03:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:27,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650592677] [2022-12-05 21:03:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:27,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:03:27,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:27,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650592677] [2022-12-05 21:03:27,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650592677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:27,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:27,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:03:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329241031] [2022-12-05 21:03:27,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:27,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:03:27,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:27,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:03:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:03:27,922 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 42 [2022-12-05 21:03:27,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:27,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:27,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 42 [2022-12-05 21:03:27,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:28,110 INFO L130 PetriNetUnfolder]: 835/1237 cut-off events. [2022-12-05 21:03:28,110 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-12-05 21:03:28,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 1237 events. 835/1237 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4554 event pairs, 637 based on Foata normal form. 0/1134 useless extension candidates. Maximal degree in co-relation 3023. Up to 1233 conditions per place. [2022-12-05 21:03:28,115 INFO L137 encePairwiseOnDemand]: 38/42 looper letters, 46 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2022-12-05 21:03:28,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 269 flow [2022-12-05 21:03:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:03:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:03:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2022-12-05 21:03:28,117 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.27976190476190477 [2022-12-05 21:03:28,117 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 169 flow. Second operand 4 states and 47 transitions. [2022-12-05 21:03:28,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 269 flow [2022-12-05 21:03:28,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 263 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:28,119 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 177 flow [2022-12-05 21:03:28,119 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-12-05 21:03:28,121 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2022-12-05 21:03:28,121 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 177 flow [2022-12-05 21:03:28,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:28,121 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:28,122 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] [2022-12-05 21:03:28,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 21:03:28,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1206677673, now seen corresponding path program 1 times [2022-12-05 21:03:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:28,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849351804] [2022-12-05 21:03:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:30,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849351804] [2022-12-05 21:03:30,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849351804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:30,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:30,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 21:03:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819410212] [2022-12-05 21:03:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 21:03:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 21:03:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-05 21:03:30,120 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:30,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 177 flow. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:30,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:30,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:30,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:30,730 INFO L130 PetriNetUnfolder]: 1184/1819 cut-off events. [2022-12-05 21:03:30,730 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2022-12-05 21:03:30,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4429 conditions, 1819 events. 1184/1819 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7676 event pairs, 644 based on Foata normal form. 1/1697 useless extension candidates. Maximal degree in co-relation 4402. Up to 1310 conditions per place. [2022-12-05 21:03:30,739 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 91 selfloop transitions, 9 changer transitions 13/113 dead transitions. [2022-12-05 21:03:30,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 113 transitions, 577 flow [2022-12-05 21:03:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:03:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:03:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2022-12-05 21:03:30,740 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.30654761904761907 [2022-12-05 21:03:30,741 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 177 flow. Second operand 8 states and 103 transitions. [2022-12-05 21:03:30,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 113 transitions, 577 flow [2022-12-05 21:03:30,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 113 transitions, 571 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 21:03:30,746 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2022-12-05 21:03:30,746 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2022-12-05 21:03:30,747 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2022-12-05 21:03:30,747 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2022-12-05 21:03:30,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:30,748 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:30,748 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] [2022-12-05 21:03:30,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 21:03:30,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1160134933, now seen corresponding path program 2 times [2022-12-05 21:03:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:30,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363188951] [2022-12-05 21:03:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:32,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:32,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363188951] [2022-12-05 21:03:32,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363188951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:32,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:32,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130433911] [2022-12-05 21:03:32,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:32,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:32,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:32,133 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:32,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:32,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:32,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:32,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:32,816 INFO L130 PetriNetUnfolder]: 1218/1907 cut-off events. [2022-12-05 21:03:32,816 INFO L131 PetriNetUnfolder]: For 1804/1804 co-relation queries the response was YES. [2022-12-05 21:03:32,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 1907 events. 1218/1907 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8482 event pairs, 484 based on Foata normal form. 1/1907 useless extension candidates. Maximal degree in co-relation 5462. Up to 1051 conditions per place. [2022-12-05 21:03:32,826 INFO L137 encePairwiseOnDemand]: 36/42 looper letters, 103 selfloop transitions, 5 changer transitions 11/119 dead transitions. [2022-12-05 21:03:32,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 119 transitions, 702 flow [2022-12-05 21:03:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2022-12-05 21:03:32,827 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.336734693877551 [2022-12-05 21:03:32,827 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 7 states and 99 transitions. [2022-12-05 21:03:32,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 119 transitions, 702 flow [2022-12-05 21:03:32,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 691 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:32,835 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 272 flow [2022-12-05 21:03:32,835 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2022-12-05 21:03:32,835 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2022-12-05 21:03:32,835 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 272 flow [2022-12-05 21:03:32,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:32,836 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:32,836 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] [2022-12-05 21:03:32,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 21:03:32,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2028717853, now seen corresponding path program 3 times [2022-12-05 21:03:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537982445] [2022-12-05 21:03:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:34,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:34,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537982445] [2022-12-05 21:03:34,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537982445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:34,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:34,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431951580] [2022-12-05 21:03:34,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:34,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:34,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:34,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:34,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:34,100 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:34,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 272 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:34,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:34,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:34,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:34,626 INFO L130 PetriNetUnfolder]: 1251/1975 cut-off events. [2022-12-05 21:03:34,627 INFO L131 PetriNetUnfolder]: For 3600/3600 co-relation queries the response was YES. [2022-12-05 21:03:34,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6328 conditions, 1975 events. 1251/1975 cut-off events. For 3600/3600 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8767 event pairs, 860 based on Foata normal form. 2/1976 useless extension candidates. Maximal degree in co-relation 6294. Up to 1719 conditions per place. [2022-12-05 21:03:34,638 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 76 selfloop transitions, 18 changer transitions 12/106 dead transitions. [2022-12-05 21:03:34,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 710 flow [2022-12-05 21:03:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:03:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:03:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 88 transitions. [2022-12-05 21:03:34,639 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.20952380952380953 [2022-12-05 21:03:34,639 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 272 flow. Second operand 10 states and 88 transitions. [2022-12-05 21:03:34,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 710 flow [2022-12-05 21:03:34,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 685 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:34,649 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 436 flow [2022-12-05 21:03:34,649 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=436, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2022-12-05 21:03:34,650 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2022-12-05 21:03:34,650 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 436 flow [2022-12-05 21:03:34,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:34,650 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:34,650 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] [2022-12-05 21:03:34,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 21:03:34,650 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1243187035, now seen corresponding path program 4 times [2022-12-05 21:03:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:34,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010678231] [2022-12-05 21:03:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:35,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:35,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010678231] [2022-12-05 21:03:35,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010678231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:35,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:35,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:35,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890894448] [2022-12-05 21:03:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:35,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:35,809 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:35,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 436 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:35,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:35,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:35,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:36,338 INFO L130 PetriNetUnfolder]: 1367/2148 cut-off events. [2022-12-05 21:03:36,338 INFO L131 PetriNetUnfolder]: For 7079/7079 co-relation queries the response was YES. [2022-12-05 21:03:36,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7987 conditions, 2148 events. 1367/2148 cut-off events. For 7079/7079 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9683 event pairs, 843 based on Foata normal form. 1/2148 useless extension candidates. Maximal degree in co-relation 7949. Up to 1824 conditions per place. [2022-12-05 21:03:36,355 INFO L137 encePairwiseOnDemand]: 35/42 looper letters, 87 selfloop transitions, 23 changer transitions 11/121 dead transitions. [2022-12-05 21:03:36,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 944 flow [2022-12-05 21:03:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2022-12-05 21:03:36,356 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.282312925170068 [2022-12-05 21:03:36,356 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 436 flow. Second operand 7 states and 83 transitions. [2022-12-05 21:03:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 944 flow [2022-12-05 21:03:36,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 890 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:36,380 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 590 flow [2022-12-05 21:03:36,380 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2022-12-05 21:03:36,381 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2022-12-05 21:03:36,381 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 590 flow [2022-12-05 21:03:36,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:36,381 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:36,381 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] [2022-12-05 21:03:36,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 21:03:36,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:36,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:36,382 INFO L85 PathProgramCache]: Analyzing trace with hash 954405159, now seen corresponding path program 5 times [2022-12-05 21:03:36,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:36,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266129735] [2022-12-05 21:03:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:36,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:37,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266129735] [2022-12-05 21:03:37,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266129735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:37,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:37,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:37,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048125476] [2022-12-05 21:03:37,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:37,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:37,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:37,332 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:37,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 590 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:37,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:37,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:37,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:37,980 INFO L130 PetriNetUnfolder]: 1436/2309 cut-off events. [2022-12-05 21:03:37,980 INFO L131 PetriNetUnfolder]: For 10086/10086 co-relation queries the response was YES. [2022-12-05 21:03:37,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9265 conditions, 2309 events. 1436/2309 cut-off events. For 10086/10086 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10915 event pairs, 844 based on Foata normal form. 1/2309 useless extension candidates. Maximal degree in co-relation 9223. Up to 1679 conditions per place. [2022-12-05 21:03:37,993 INFO L137 encePairwiseOnDemand]: 35/42 looper letters, 97 selfloop transitions, 27 changer transitions 9/133 dead transitions. [2022-12-05 21:03:37,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 1109 flow [2022-12-05 21:03:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2022-12-05 21:03:37,995 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.30272108843537415 [2022-12-05 21:03:37,995 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 590 flow. Second operand 7 states and 89 transitions. [2022-12-05 21:03:37,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 1109 flow [2022-12-05 21:03:38,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 133 transitions, 1079 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-05 21:03:38,031 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 716 flow [2022-12-05 21:03:38,032 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=716, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2022-12-05 21:03:38,032 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2022-12-05 21:03:38,032 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 716 flow [2022-12-05 21:03:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:38,033 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:38,033 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] [2022-12-05 21:03:38,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 21:03:38,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:38,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1075580087, now seen corresponding path program 6 times [2022-12-05 21:03:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:38,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862691793] [2022-12-05 21:03:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:38,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862691793] [2022-12-05 21:03:38,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862691793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:38,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:38,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336358512] [2022-12-05 21:03:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:38,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:38,938 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:38,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 716 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:38,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:38,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:38,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:39,585 INFO L130 PetriNetUnfolder]: 1496/2449 cut-off events. [2022-12-05 21:03:39,585 INFO L131 PetriNetUnfolder]: For 13279/13279 co-relation queries the response was YES. [2022-12-05 21:03:39,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10389 conditions, 2449 events. 1496/2449 cut-off events. For 13279/13279 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12094 event pairs, 970 based on Foata normal form. 1/2449 useless extension candidates. Maximal degree in co-relation 10343. Up to 2022 conditions per place. [2022-12-05 21:03:39,597 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 112 selfloop transitions, 22 changer transitions 13/147 dead transitions. [2022-12-05 21:03:39,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 1362 flow [2022-12-05 21:03:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2022-12-05 21:03:39,598 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3163265306122449 [2022-12-05 21:03:39,598 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 716 flow. Second operand 7 states and 93 transitions. [2022-12-05 21:03:39,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 1362 flow [2022-12-05 21:03:39,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1312 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:39,628 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 814 flow [2022-12-05 21:03:39,628 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=814, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2022-12-05 21:03:39,629 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2022-12-05 21:03:39,629 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 814 flow [2022-12-05 21:03:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:39,629 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:39,629 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] [2022-12-05 21:03:39,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 21:03:39,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1665083883, now seen corresponding path program 7 times [2022-12-05 21:03:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:39,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635332457] [2022-12-05 21:03:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:39,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:40,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635332457] [2022-12-05 21:03:40,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635332457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:40,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:40,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981678692] [2022-12-05 21:03:40,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:40,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:40,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:40,671 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:40,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 814 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:40,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:40,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:40,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:41,414 INFO L130 PetriNetUnfolder]: 1488/2441 cut-off events. [2022-12-05 21:03:41,415 INFO L131 PetriNetUnfolder]: For 15283/15283 co-relation queries the response was YES. [2022-12-05 21:03:41,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10616 conditions, 2441 events. 1488/2441 cut-off events. For 15283/15283 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12295 event pairs, 550 based on Foata normal form. 1/2441 useless extension candidates. Maximal degree in co-relation 10567. Up to 1255 conditions per place. [2022-12-05 21:03:41,426 INFO L137 encePairwiseOnDemand]: 36/42 looper letters, 135 selfloop transitions, 16 changer transitions 13/164 dead transitions. [2022-12-05 21:03:41,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 164 transitions, 1569 flow [2022-12-05 21:03:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2022-12-05 21:03:41,427 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.336734693877551 [2022-12-05 21:03:41,427 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 814 flow. Second operand 7 states and 99 transitions. [2022-12-05 21:03:41,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 164 transitions, 1569 flow [2022-12-05 21:03:41,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1522 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:41,466 INFO L231 Difference]: Finished difference. Result has 103 places, 103 transitions, 977 flow [2022-12-05 21:03:41,467 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=977, PETRI_PLACES=103, PETRI_TRANSITIONS=103} [2022-12-05 21:03:41,467 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2022-12-05 21:03:41,467 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 103 transitions, 977 flow [2022-12-05 21:03:41,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:41,468 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:41,468 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] [2022-12-05 21:03:41,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-05 21:03:41,468 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash -145005331, now seen corresponding path program 8 times [2022-12-05 21:03:41,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:41,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905580099] [2022-12-05 21:03:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:42,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:42,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905580099] [2022-12-05 21:03:42,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905580099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:42,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:42,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057279040] [2022-12-05 21:03:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:42,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:42,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:42,281 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:42,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 977 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:42,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:42,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:42,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:42,856 INFO L130 PetriNetUnfolder]: 1493/2468 cut-off events. [2022-12-05 21:03:42,856 INFO L131 PetriNetUnfolder]: For 19398/19398 co-relation queries the response was YES. [2022-12-05 21:03:42,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11101 conditions, 2468 events. 1493/2468 cut-off events. For 19398/19398 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12331 event pairs, 830 based on Foata normal form. 1/2468 useless extension candidates. Maximal degree in co-relation 11049. Up to 1640 conditions per place. [2022-12-05 21:03:42,871 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 115 selfloop transitions, 38 changer transitions 8/161 dead transitions. [2022-12-05 21:03:42,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 161 transitions, 1604 flow [2022-12-05 21:03:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2022-12-05 21:03:42,872 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3435374149659864 [2022-12-05 21:03:42,872 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 977 flow. Second operand 7 states and 101 transitions. [2022-12-05 21:03:42,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 161 transitions, 1604 flow [2022-12-05 21:03:42,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 161 transitions, 1576 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:42,928 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 1139 flow [2022-12-05 21:03:42,928 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1139, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2022-12-05 21:03:42,928 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2022-12-05 21:03:42,928 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 1139 flow [2022-12-05 21:03:42,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:42,929 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:42,929 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] [2022-12-05 21:03:42,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 21:03:42,930 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash -352159959, now seen corresponding path program 9 times [2022-12-05 21:03:42,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:42,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659733826] [2022-12-05 21:03:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:42,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:03:44,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659733826] [2022-12-05 21:03:44,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659733826] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:03:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115315591] [2022-12-05 21:03:44,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:03:44,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:44,051 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) [2022-12-05 21:03:44,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 21:03:44,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-05 21:03:44,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:03:44,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-05 21:03:44,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:03:44,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:03:44,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 291 treesize of output 345 [2022-12-05 21:03:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:46,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:03:46,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115315591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:46,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:03:46,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-12-05 21:03:46,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375496920] [2022-12-05 21:03:46,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:46,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:46,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-05 21:03:46,286 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:46,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 1139 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:46,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:46,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:46,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:46,958 INFO L130 PetriNetUnfolder]: 1489/2496 cut-off events. [2022-12-05 21:03:46,958 INFO L131 PetriNetUnfolder]: For 18948/18948 co-relation queries the response was YES. [2022-12-05 21:03:46,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11361 conditions, 2496 events. 1489/2496 cut-off events. For 18948/18948 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12714 event pairs, 992 based on Foata normal form. 1/2496 useless extension candidates. Maximal degree in co-relation 11307. Up to 2108 conditions per place. [2022-12-05 21:03:46,973 INFO L137 encePairwiseOnDemand]: 35/42 looper letters, 106 selfloop transitions, 41 changer transitions 8/155 dead transitions. [2022-12-05 21:03:46,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 155 transitions, 1808 flow [2022-12-05 21:03:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2022-12-05 21:03:46,975 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2891156462585034 [2022-12-05 21:03:46,975 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 1139 flow. Second operand 7 states and 85 transitions. [2022-12-05 21:03:46,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 155 transitions, 1808 flow [2022-12-05 21:03:47,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 155 transitions, 1726 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-05 21:03:47,023 INFO L231 Difference]: Finished difference. Result has 113 places, 123 transitions, 1434 flow [2022-12-05 21:03:47,024 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1434, PETRI_PLACES=113, PETRI_TRANSITIONS=123} [2022-12-05 21:03:47,024 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2022-12-05 21:03:47,024 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 123 transitions, 1434 flow [2022-12-05 21:03:47,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:47,024 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:47,024 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] [2022-12-05 21:03:47,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 21:03:47,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-05 21:03:47,229 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash -266192217, now seen corresponding path program 10 times [2022-12-05 21:03:47,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:47,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669584323] [2022-12-05 21:03:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:47,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:48,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669584323] [2022-12-05 21:03:48,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669584323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:48,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:48,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955040021] [2022-12-05 21:03:48,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:48,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:48,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:48,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:48,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:48,051 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:48,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 123 transitions, 1434 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:48,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:48,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:48,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:48,656 INFO L130 PetriNetUnfolder]: 1484/2483 cut-off events. [2022-12-05 21:03:48,656 INFO L131 PetriNetUnfolder]: For 20430/20430 co-relation queries the response was YES. [2022-12-05 21:03:48,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11765 conditions, 2483 events. 1484/2483 cut-off events. For 20430/20430 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12606 event pairs, 832 based on Foata normal form. 1/2483 useless extension candidates. Maximal degree in co-relation 11709. Up to 1641 conditions per place. [2022-12-05 21:03:48,672 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 103 selfloop transitions, 48 changer transitions 15/166 dead transitions. [2022-12-05 21:03:48,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 166 transitions, 1945 flow [2022-12-05 21:03:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2022-12-05 21:03:48,673 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3231292517006803 [2022-12-05 21:03:48,673 INFO L175 Difference]: Start difference. First operand has 113 places, 123 transitions, 1434 flow. Second operand 7 states and 95 transitions. [2022-12-05 21:03:48,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 166 transitions, 1945 flow [2022-12-05 21:03:48,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 166 transitions, 1913 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-12-05 21:03:48,733 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 1492 flow [2022-12-05 21:03:48,733 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1492, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2022-12-05 21:03:48,734 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2022-12-05 21:03:48,734 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 1492 flow [2022-12-05 21:03:48,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:48,734 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:48,734 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] [2022-12-05 21:03:48,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-05 21:03:48,734 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1298276007, now seen corresponding path program 11 times [2022-12-05 21:03:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:48,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661344660] [2022-12-05 21:03:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661344660] [2022-12-05 21:03:49,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661344660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:49,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:49,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104896697] [2022-12-05 21:03:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:49,719 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:49,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 1492 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:49,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:49,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:49,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:50,298 INFO L130 PetriNetUnfolder]: 1477/2472 cut-off events. [2022-12-05 21:03:50,298 INFO L131 PetriNetUnfolder]: For 22029/22029 co-relation queries the response was YES. [2022-12-05 21:03:50,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11926 conditions, 2472 events. 1477/2472 cut-off events. For 22029/22029 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12595 event pairs, 1009 based on Foata normal form. 1/2472 useless extension candidates. Maximal degree in co-relation 11868. Up to 2170 conditions per place. [2022-12-05 21:03:50,317 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 101 selfloop transitions, 43 changer transitions 9/153 dead transitions. [2022-12-05 21:03:50,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 153 transitions, 1965 flow [2022-12-05 21:03:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2022-12-05 21:03:50,318 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2687074829931973 [2022-12-05 21:03:50,318 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 1492 flow. Second operand 7 states and 79 transitions. [2022-12-05 21:03:50,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 153 transitions, 1965 flow [2022-12-05 21:03:50,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 153 transitions, 1861 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-05 21:03:50,386 INFO L231 Difference]: Finished difference. Result has 121 places, 125 transitions, 1550 flow [2022-12-05 21:03:50,386 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1550, PETRI_PLACES=121, PETRI_TRANSITIONS=125} [2022-12-05 21:03:50,386 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2022-12-05 21:03:50,386 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 125 transitions, 1550 flow [2022-12-05 21:03:50,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:50,386 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:50,387 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] [2022-12-05 21:03:50,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-05 21:03:50,387 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:50,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:50,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1328090387, now seen corresponding path program 12 times [2022-12-05 21:03:50,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:50,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079068536] [2022-12-05 21:03:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:50,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:51,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:51,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079068536] [2022-12-05 21:03:51,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079068536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:51,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:51,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:51,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615920905] [2022-12-05 21:03:51,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:51,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:51,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:51,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:51,193 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:51,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 125 transitions, 1550 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:51,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:51,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:51,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:51,783 INFO L130 PetriNetUnfolder]: 1508/2582 cut-off events. [2022-12-05 21:03:51,784 INFO L131 PetriNetUnfolder]: For 22654/22654 co-relation queries the response was YES. [2022-12-05 21:03:51,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12455 conditions, 2582 events. 1508/2582 cut-off events. For 22654/22654 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13662 event pairs, 998 based on Foata normal form. 2/2583 useless extension candidates. Maximal degree in co-relation 12395. Up to 2137 conditions per place. [2022-12-05 21:03:51,799 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 104 selfloop transitions, 56 changer transitions 9/169 dead transitions. [2022-12-05 21:03:51,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 169 transitions, 2159 flow [2022-12-05 21:03:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:03:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:03:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2022-12-05 21:03:51,800 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2022-12-05 21:03:51,800 INFO L175 Difference]: Start difference. First operand has 121 places, 125 transitions, 1550 flow. Second operand 8 states and 92 transitions. [2022-12-05 21:03:51,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 169 transitions, 2159 flow [2022-12-05 21:03:51,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 169 transitions, 2071 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-05 21:03:51,861 INFO L231 Difference]: Finished difference. Result has 125 places, 131 transitions, 1697 flow [2022-12-05 21:03:51,861 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1697, PETRI_PLACES=125, PETRI_TRANSITIONS=131} [2022-12-05 21:03:51,862 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2022-12-05 21:03:51,862 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 131 transitions, 1697 flow [2022-12-05 21:03:51,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:51,862 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:51,862 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] [2022-12-05 21:03:51,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-05 21:03:51,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:51,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:51,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2011885357, now seen corresponding path program 13 times [2022-12-05 21:03:51,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:51,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740269907] [2022-12-05 21:03:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:51,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740269907] [2022-12-05 21:03:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740269907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:52,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:52,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888378944] [2022-12-05 21:03:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:52,824 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:52,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 131 transitions, 1697 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:52,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:52,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:52,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:53,441 INFO L130 PetriNetUnfolder]: 1498/2557 cut-off events. [2022-12-05 21:03:53,441 INFO L131 PetriNetUnfolder]: For 25140/25140 co-relation queries the response was YES. [2022-12-05 21:03:53,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12770 conditions, 2557 events. 1498/2557 cut-off events. For 25140/25140 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13416 event pairs, 1033 based on Foata normal form. 1/2557 useless extension candidates. Maximal degree in co-relation 12708. Up to 2251 conditions per place. [2022-12-05 21:03:53,458 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 105 selfloop transitions, 40 changer transitions 15/160 dead transitions. [2022-12-05 21:03:53,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 160 transitions, 2125 flow [2022-12-05 21:03:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2022-12-05 21:03:53,459 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.272108843537415 [2022-12-05 21:03:53,459 INFO L175 Difference]: Start difference. First operand has 125 places, 131 transitions, 1697 flow. Second operand 7 states and 80 transitions. [2022-12-05 21:03:53,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 160 transitions, 2125 flow [2022-12-05 21:03:53,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 160 transitions, 2010 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-05 21:03:53,533 INFO L231 Difference]: Finished difference. Result has 127 places, 128 transitions, 1605 flow [2022-12-05 21:03:53,533 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1605, PETRI_PLACES=127, PETRI_TRANSITIONS=128} [2022-12-05 21:03:53,533 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2022-12-05 21:03:53,533 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 128 transitions, 1605 flow [2022-12-05 21:03:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:53,533 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:53,533 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] [2022-12-05 21:03:53,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-05 21:03:53,534 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:53,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1501338079, now seen corresponding path program 14 times [2022-12-05 21:03:53,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:53,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218623325] [2022-12-05 21:03:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:53,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:03:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:54,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218623325] [2022-12-05 21:03:54,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218623325] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:03:54,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962195145] [2022-12-05 21:03:54,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:03:54,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:03:54,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:03:54,501 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) [2022-12-05 21:03:54,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 21:03:54,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 21:03:54,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:03:54,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-05 21:03:54,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:03:54,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:03:54,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 291 treesize of output 345 [2022-12-05 21:03:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:56,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:03:56,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962195145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:56,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:03:56,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-12-05 21:03:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712742789] [2022-12-05 21:03:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:56,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:56,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-05 21:03:56,475 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:56,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 128 transitions, 1605 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:56,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:56,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:56,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:57,165 INFO L130 PetriNetUnfolder]: 1493/2570 cut-off events. [2022-12-05 21:03:57,165 INFO L131 PetriNetUnfolder]: For 24773/24773 co-relation queries the response was YES. [2022-12-05 21:03:57,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12728 conditions, 2570 events. 1493/2570 cut-off events. For 24773/24773 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13642 event pairs, 1039 based on Foata normal form. 1/2570 useless extension candidates. Maximal degree in co-relation 12665. Up to 2244 conditions per place. [2022-12-05 21:03:57,182 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 104 selfloop transitions, 46 changer transitions 9/159 dead transitions. [2022-12-05 21:03:57,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 159 transitions, 2054 flow [2022-12-05 21:03:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:03:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:03:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2022-12-05 21:03:57,185 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2022-12-05 21:03:57,185 INFO L175 Difference]: Start difference. First operand has 127 places, 128 transitions, 1605 flow. Second operand 7 states and 84 transitions. [2022-12-05 21:03:57,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 159 transitions, 2054 flow [2022-12-05 21:03:57,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 159 transitions, 1964 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-12-05 21:03:57,251 INFO L231 Difference]: Finished difference. Result has 125 places, 129 transitions, 1637 flow [2022-12-05 21:03:57,251 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1637, PETRI_PLACES=125, PETRI_TRANSITIONS=129} [2022-12-05 21:03:57,251 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2022-12-05 21:03:57,251 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 129 transitions, 1637 flow [2022-12-05 21:03:57,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:57,251 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:57,252 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] [2022-12-05 21:03:57,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 21:03:57,457 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,SelfDestructingSolverStorable21 [2022-12-05 21:03:57,457 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:57,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash 830935689, now seen corresponding path program 15 times [2022-12-05 21:03:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:57,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149893950] [2022-12-05 21:03:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:57,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:58,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:58,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149893950] [2022-12-05 21:03:58,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149893950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:58,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:58,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613062782] [2022-12-05 21:03:58,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:58,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:58,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:58,215 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:58,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 129 transitions, 1637 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:58,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:58,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:58,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:03:58,831 INFO L130 PetriNetUnfolder]: 1490/2570 cut-off events. [2022-12-05 21:03:58,831 INFO L131 PetriNetUnfolder]: For 25017/25017 co-relation queries the response was YES. [2022-12-05 21:03:58,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12729 conditions, 2570 events. 1490/2570 cut-off events. For 25017/25017 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13697 event pairs, 1010 based on Foata normal form. 2/2571 useless extension candidates. Maximal degree in co-relation 12667. Up to 2214 conditions per place. [2022-12-05 21:03:58,846 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 96 selfloop transitions, 52 changer transitions 14/162 dead transitions. [2022-12-05 21:03:58,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 162 transitions, 2129 flow [2022-12-05 21:03:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:03:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:03:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2022-12-05 21:03:58,847 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.25595238095238093 [2022-12-05 21:03:58,847 INFO L175 Difference]: Start difference. First operand has 125 places, 129 transitions, 1637 flow. Second operand 8 states and 86 transitions. [2022-12-05 21:03:58,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 162 transitions, 2129 flow [2022-12-05 21:03:58,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 162 transitions, 2033 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-05 21:03:58,903 INFO L231 Difference]: Finished difference. Result has 128 places, 129 transitions, 1660 flow [2022-12-05 21:03:58,903 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1660, PETRI_PLACES=128, PETRI_TRANSITIONS=129} [2022-12-05 21:03:58,903 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2022-12-05 21:03:58,903 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 129 transitions, 1660 flow [2022-12-05 21:03:58,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:58,903 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:03:58,904 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] [2022-12-05 21:03:58,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-05 21:03:58,904 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:03:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:03:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1529022881, now seen corresponding path program 16 times [2022-12-05 21:03:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:03:58,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663572671] [2022-12-05 21:03:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:03:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:03:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:03:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:03:59,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:03:59,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663572671] [2022-12-05 21:03:59,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663572671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:03:59,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:03:59,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:03:59,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758851346] [2022-12-05 21:03:59,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:03:59,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:03:59,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:03:59,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:03:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:03:59,715 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:03:59,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 129 transitions, 1660 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:03:59,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:03:59,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:03:59,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:04:00,246 INFO L130 PetriNetUnfolder]: 1478/2534 cut-off events. [2022-12-05 21:04:00,246 INFO L131 PetriNetUnfolder]: For 26369/26369 co-relation queries the response was YES. [2022-12-05 21:04:00,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 2534 events. 1478/2534 cut-off events. For 26369/26369 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13383 event pairs, 1019 based on Foata normal form. 2/2535 useless extension candidates. Maximal degree in co-relation 12719. Up to 2212 conditions per place. [2022-12-05 21:04:00,265 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 96 selfloop transitions, 48 changer transitions 15/159 dead transitions. [2022-12-05 21:04:00,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 159 transitions, 2117 flow [2022-12-05 21:04:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:04:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:04:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2022-12-05 21:04:00,266 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.22486772486772486 [2022-12-05 21:04:00,266 INFO L175 Difference]: Start difference. First operand has 128 places, 129 transitions, 1660 flow. Second operand 9 states and 85 transitions. [2022-12-05 21:04:00,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 159 transitions, 2117 flow [2022-12-05 21:04:00,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 159 transitions, 2005 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-05 21:04:00,344 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 1655 flow [2022-12-05 21:04:00,344 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1655, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2022-12-05 21:04:00,344 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2022-12-05 21:04:00,344 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 1655 flow [2022-12-05 21:04:00,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:00,344 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:04:00,345 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] [2022-12-05 21:04:00,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-05 21:04:00,345 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:04:00,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:04:00,345 INFO L85 PathProgramCache]: Analyzing trace with hash 692150253, now seen corresponding path program 17 times [2022-12-05 21:04:00,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:04:00,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401766745] [2022-12-05 21:04:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:04:00,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:04:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:04:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:01,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:04:01,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401766745] [2022-12-05 21:04:01,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401766745] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:04:01,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:04:01,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 21:04:01,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134551405] [2022-12-05 21:04:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:04:01,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:04:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:04:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:04:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-05 21:04:01,110 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:04:01,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 1655 flow. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:01,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:04:01,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:04:01,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:04:01,653 INFO L130 PetriNetUnfolder]: 1463/2491 cut-off events. [2022-12-05 21:04:01,653 INFO L131 PetriNetUnfolder]: For 27748/27748 co-relation queries the response was YES. [2022-12-05 21:04:01,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12739 conditions, 2491 events. 1463/2491 cut-off events. For 27748/27748 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12983 event pairs, 1014 based on Foata normal form. 2/2492 useless extension candidates. Maximal degree in co-relation 12674. Up to 2180 conditions per place. [2022-12-05 21:04:01,666 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 93 selfloop transitions, 43 changer transitions 17/153 dead transitions. [2022-12-05 21:04:01,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 153 transitions, 2035 flow [2022-12-05 21:04:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:04:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:04:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 82 transitions. [2022-12-05 21:04:01,668 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.19523809523809524 [2022-12-05 21:04:01,668 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 1655 flow. Second operand 10 states and 82 transitions. [2022-12-05 21:04:01,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 153 transitions, 2035 flow [2022-12-05 21:04:01,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 153 transitions, 1917 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-12-05 21:04:01,738 INFO L231 Difference]: Finished difference. Result has 135 places, 123 transitions, 1562 flow [2022-12-05 21:04:01,738 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1562, PETRI_PLACES=135, PETRI_TRANSITIONS=123} [2022-12-05 21:04:01,738 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2022-12-05 21:04:01,738 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 123 transitions, 1562 flow [2022-12-05 21:04:01,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:01,738 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:04:01,739 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] [2022-12-05 21:04:01,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-05 21:04:01,739 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:04:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:04:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash -380734335, now seen corresponding path program 1 times [2022-12-05 21:04:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:04:01,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232164682] [2022-12-05 21:04:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:04:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:04:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:04:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:01,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:04:01,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232164682] [2022-12-05 21:04:01,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232164682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:04:01,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:04:01,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:04:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29915302] [2022-12-05 21:04:01,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:04:01,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:04:01,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:04:01,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:04:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:04:01,857 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:04:01,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 123 transitions, 1562 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:01,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:04:01,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:04:01,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:04:02,550 INFO L130 PetriNetUnfolder]: 2575/4563 cut-off events. [2022-12-05 21:04:02,550 INFO L131 PetriNetUnfolder]: For 48142/48142 co-relation queries the response was YES. [2022-12-05 21:04:02,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24783 conditions, 4563 events. 2575/4563 cut-off events. For 48142/48142 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29091 event pairs, 1033 based on Foata normal form. 97/4659 useless extension candidates. Maximal degree in co-relation 24717. Up to 2341 conditions per place. [2022-12-05 21:04:02,575 INFO L137 encePairwiseOnDemand]: 34/42 looper letters, 258 selfloop transitions, 58 changer transitions 7/323 dead transitions. [2022-12-05 21:04:02,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 323 transitions, 5137 flow [2022-12-05 21:04:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:04:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:04:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2022-12-05 21:04:02,576 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2022-12-05 21:04:02,576 INFO L175 Difference]: Start difference. First operand has 135 places, 123 transitions, 1562 flow. Second operand 5 states and 103 transitions. [2022-12-05 21:04:02,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 323 transitions, 5137 flow [2022-12-05 21:04:02,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 323 transitions, 4867 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-12-05 21:04:02,736 INFO L231 Difference]: Finished difference. Result has 130 places, 180 transitions, 2564 flow [2022-12-05 21:04:02,736 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2564, PETRI_PLACES=130, PETRI_TRANSITIONS=180} [2022-12-05 21:04:02,736 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2022-12-05 21:04:02,737 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 180 transitions, 2564 flow [2022-12-05 21:04:02,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:02,737 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:04:02,737 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] [2022-12-05 21:04:02,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-05 21:04:02,737 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:04:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:04:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1489037539, now seen corresponding path program 2 times [2022-12-05 21:04:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:04:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284558015] [2022-12-05 21:04:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:04:02,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:04:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:04:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 21:04:02,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:04:02,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284558015] [2022-12-05 21:04:02,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284558015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:04:02,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:04:02,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 21:04:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145109871] [2022-12-05 21:04:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:04:02,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:04:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:04:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:04:02,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 21:04:02,847 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 42 [2022-12-05 21:04:02,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 180 transitions, 2564 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:02,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:04:02,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 42 [2022-12-05 21:04:02,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:04:03,939 INFO L130 PetriNetUnfolder]: 4156/7530 cut-off events. [2022-12-05 21:04:03,939 INFO L131 PetriNetUnfolder]: For 89192/89192 co-relation queries the response was YES. [2022-12-05 21:04:03,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43237 conditions, 7530 events. 4156/7530 cut-off events. For 89192/89192 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 54824 event pairs, 1179 based on Foata normal form. 76/7605 useless extension candidates. Maximal degree in co-relation 43170. Up to 3868 conditions per place. [2022-12-05 21:04:03,992 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 289 selfloop transitions, 92 changer transitions 19/400 dead transitions. [2022-12-05 21:04:03,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 400 transitions, 6721 flow [2022-12-05 21:04:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:04:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:04:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2022-12-05 21:04:03,993 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-05 21:04:03,993 INFO L175 Difference]: Start difference. First operand has 130 places, 180 transitions, 2564 flow. Second operand 5 states and 105 transitions. [2022-12-05 21:04:03,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 400 transitions, 6721 flow [2022-12-05 21:04:04,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 400 transitions, 6711 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-12-05 21:04:04,441 INFO L231 Difference]: Finished difference. Result has 138 places, 231 transitions, 3785 flow [2022-12-05 21:04:04,441 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3785, PETRI_PLACES=138, PETRI_TRANSITIONS=231} [2022-12-05 21:04:04,442 INFO L294 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2022-12-05 21:04:04,442 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 231 transitions, 3785 flow [2022-12-05 21:04:04,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:04:04,442 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:04:04,442 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] [2022-12-05 21:04:04,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-05 21:04:04,442 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:04:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:04:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash 128281161, now seen corresponding path program 1 times [2022-12-05 21:04:04,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:04:04,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987183795] [2022-12-05 21:04:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:04:04,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:04:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:04:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-05 21:04:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:04:05,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987183795] [2022-12-05 21:04:05,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987183795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:04:05,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778756580] [2022-12-05 21:04:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:04:05,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:04:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:04:05,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:04:05,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 21:04:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:04:05,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-05 21:04:05,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:04:05,923 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-12-05 21:04:05,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 67 [2022-12-05 21:04:05,971 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-05 21:04:05,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-05 21:04:06,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-05 21:04:06,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2022-12-05 21:13:49,557 WARN L233 SmtUtils]: Spent 9.65m on a formula simplification that was a NOOP. DAG size: 7342 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-05 21:13:49,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:13:49,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 49 select indices, 49 select index equivalence classes, 0 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 1176 case distinctions, treesize of input 1257 treesize of output 22145 Received shutdown request... [2022-12-05 21:17:13,666 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 21:17:13,677 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 21:17:13,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 21:17:13,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-05 21:17:13,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:17:13,967 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 37 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 17 xjuncts wrt. a ∧-1171-3-2-2-10-3-9-1 context. [2022-12-05 21:17:13,969 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 21:17:13,969 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 21:17:13,969 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 21:17:13,969 INFO L458 BasicCegarLoop]: Path program histogram: [17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:17:13,971 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:17:13,971 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:17:13,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:17:13 BasicIcfg [2022-12-05 21:17:13,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:17:13,973 INFO L158 Benchmark]: Toolchain (without parser) took 846756.56ms. Allocated memory was 200.3MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 164.1MB in the beginning and 1.0GB in the end (delta: -881.8MB). Peak memory consumption was 823.0MB. Max. memory is 8.0GB. [2022-12-05 21:17:13,973 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 200.3MB. Free memory is still 177.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:17:13,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.64ms. Allocated memory is still 200.3MB. Free memory was 163.9MB in the beginning and 150.8MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 21:17:13,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.90ms. Allocated memory is still 200.3MB. Free memory was 150.8MB in the beginning and 147.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 21:17:13,974 INFO L158 Benchmark]: Boogie Preprocessor took 51.10ms. Allocated memory is still 200.3MB. Free memory was 147.7MB in the beginning and 145.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:17:13,974 INFO L158 Benchmark]: RCFGBuilder took 544.27ms. Allocated memory is still 200.3MB. Free memory was 145.1MB in the beginning and 112.0MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-12-05 21:17:13,974 INFO L158 Benchmark]: TraceAbstraction took 845810.05ms. Allocated memory was 200.3MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 111.0MB in the beginning and 1.0GB in the end (delta: -934.9MB). Peak memory consumption was 769.5MB. Max. memory is 8.0GB. [2022-12-05 21:17:13,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 200.3MB. Free memory is still 177.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 281.64ms. Allocated memory is still 200.3MB. Free memory was 163.9MB in the beginning and 150.8MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.90ms. Allocated memory is still 200.3MB. Free memory was 150.8MB in the beginning and 147.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.10ms. Allocated memory is still 200.3MB. Free memory was 147.7MB in the beginning and 145.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 544.27ms. Allocated memory is still 200.3MB. Free memory was 145.1MB in the beginning and 112.0MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 845810.05ms. Allocated memory was 200.3MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 111.0MB in the beginning and 1.0GB in the end (delta: -934.9MB). Peak memory consumption was 769.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.8s, 439 PlacesBefore, 42 PlacesAfterwards, 470 TransitionsBefore, 42 TransitionsAfterwards, 17280 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 266 TrivialYvCompositions, 131 ConcurrentYvCompositions, 31 ChoiceCompositions, 429 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 11492, independent unconditional: 0, dependent: 75, dependent conditional: 75, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 0, independent unconditional: 11492, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 0, independent unconditional: 11492, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11567, independent: 11492, independent conditional: 0, independent unconditional: 11492, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10220, independent: 10175, independent conditional: 0, independent unconditional: 10175, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10220, independent: 10175, independent conditional: 0, independent unconditional: 10175, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 60, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11567, independent: 1317, independent conditional: 0, independent unconditional: 1317, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 10220, unknown conditional: 0, unknown unconditional: 10220] , Statistics on independence cache: Total cache size (in pairs): 20762, Positive cache size: 20717, Positive conditional cache size: 0, Positive unconditional cache size: 20717, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 37 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 17 xjuncts wrt. a ∧-1171-3-2-2-10-3-9-1 context. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 37 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 17 xjuncts wrt. a ∧-1171-3-2-2-10-3-9-1 context. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 37 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 17 xjuncts wrt. a ∧-1171-3-2-2-10-3-9-1 context. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 37 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 17 xjuncts wrt. a ∧-1171-3-2-2-10-3-9-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 581 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 845.7s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 15.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 931 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 931 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8353 IncrementalHoareTripleChecker+Invalid, 8365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 19 mSDtfsCounter, 8353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3785occurred in iteration=27, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 1008 NumberOfCodeBlocks, 996 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 979 ConstructedInterpolants, 6 QuantifiedInterpolants, 12666 SizeOfPredicates, 70 NumberOfNonLiveVariables, 856 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 29 InterpolantComputations, 27 PerfectInterpolantSequences, 139/141 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