/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:21:43,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:21:43,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:21:43,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:21:43,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:21:43,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:21:43,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:21:43,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:21:43,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:21:43,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:21:43,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:21:43,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:21:43,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:21:43,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:21:43,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:21:43,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:21:43,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:21:43,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:21:43,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:21:43,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:21:43,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:21:43,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:21:43,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:21:43,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:21:43,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:21:43,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:21:43,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:21:43,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:21:43,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:21:43,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:21:43,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:21:43,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:21:43,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:21:43,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:21:43,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:21:43,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:21:43,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:21:43,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:21:43,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:21:43,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:21:43,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:21:43,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:21:43,261 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:21:43,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:21:43,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:21:43,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:21:43,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:21:43,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:21:43,263 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:21:43,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:21:43,263 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:21:43,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:21:43,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:21:43,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:21:43,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:21:43,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:21:43,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:21:43,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:21:43,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:21:43,266 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:21:43,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:21:43,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:21:43,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:21:43,463 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:21:43,464 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:21:43,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-01-27 20:21:44,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:21:44,515 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:21:44,515 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c [2023-01-27 20:21:44,520 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46193e30/5414fd1e9bbd46b9aca8f5cf4b8d1a81/FLAG73a393468 [2023-01-27 20:21:44,529 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46193e30/5414fd1e9bbd46b9aca8f5cf4b8d1a81 [2023-01-27 20:21:44,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:21:44,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:21:44,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:21:44,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:21:44,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:21:44,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e29d1b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44, skipping insertion in model container [2023-01-27 20:21:44,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:21:44,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:21:44,672 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2023-01-27 20:21:44,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:21:44,686 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:21:44,711 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2023-01-27 20:21:44,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:21:44,729 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:21:44,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44 WrapperNode [2023-01-27 20:21:44,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:21:44,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:21:44,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:21:44,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:21:44,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,772 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 601 [2023-01-27 20:21:44,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:21:44,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:21:44,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:21:44,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:21:44,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:21:44,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:21:44,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:21:44,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:21:44,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (1/1) ... [2023-01-27 20:21:44,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:21:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:21:44,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:21:44,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:21:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:21:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:21:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:21:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:21:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:21:44,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:21:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:21:44,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:21:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:21:44,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:21:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:21:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:21:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:21:44,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:21:44,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:21:44,880 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:21:44,991 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:21:44,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:21:45,553 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:21:45,565 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:21:45,566 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 20:21:45,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:21:45 BoogieIcfgContainer [2023-01-27 20:21:45,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:21:45,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:21:45,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:21:45,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:21:45,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:21:44" (1/3) ... [2023-01-27 20:21:45,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4f496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:21:45, skipping insertion in model container [2023-01-27 20:21:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:44" (2/3) ... [2023-01-27 20:21:45,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4f496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:21:45, skipping insertion in model container [2023-01-27 20:21:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:21:45" (3/3) ... [2023-01-27 20:21:45,574 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-01-27 20:21:45,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:21:45,585 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:21:45,585 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:21:45,731 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:21:45,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 717 transitions, 1458 flow [2023-01-27 20:21:45,967 INFO L130 PetriNetUnfolder]: 73/714 cut-off events. [2023-01-27 20:21:45,967 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:21:45,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 714 events. 73/714 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2388 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-27 20:21:45,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 717 transitions, 1458 flow [2023-01-27 20:21:46,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 704 transitions, 1426 flow [2023-01-27 20:21:46,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:21:46,020 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-27 20:21:46,022 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-27 20:21:46,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 704 transitions, 1426 flow [2023-01-27 20:21:46,163 INFO L130 PetriNetUnfolder]: 73/704 cut-off events. [2023-01-27 20:21:46,163 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:21:46,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 704 events. 73/704 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2389 event pairs, 0 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-27 20:21:46,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 157248 [2023-01-27 20:22:13,735 INFO L134 LiptonReduction]: Checked pairs total: 150057 [2023-01-27 20:22:13,735 INFO L136 LiptonReduction]: Total number of compositions: 891 [2023-01-27 20:22:13,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:22:13,756 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;@86751bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:22:13,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:22:13,764 INFO L130 PetriNetUnfolder]: 12/47 cut-off events. [2023-01-27 20:22:13,764 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:22:13,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:13,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:13,766 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)] === [2023-01-27 20:22:13,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:13,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1427696023, now seen corresponding path program 1 times [2023-01-27 20:22:13,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:13,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580396346] [2023-01-27 20:22:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:22:14,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:14,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580396346] [2023-01-27 20:22:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580396346] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:14,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:14,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:14,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452480151] [2023-01-27 20:22:14,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:14,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:14,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:14,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-27 20:22:14,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:14,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:14,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-27 20:22:14,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:14,774 INFO L130 PetriNetUnfolder]: 2608/3503 cut-off events. [2023-01-27 20:22:14,775 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-01-27 20:22:14,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 3503 events. 2608/3503 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12504 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 6748. Up to 3501 conditions per place. [2023-01-27 20:22:14,790 INFO L137 encePairwiseOnDemand]: 1600/1608 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-01-27 20:22:14,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 218 flow [2023-01-27 20:22:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1983 transitions. [2023-01-27 20:22:14,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110696517412935 [2023-01-27 20:22:14,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1983 transitions. [2023-01-27 20:22:14,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1983 transitions. [2023-01-27 20:22:14,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:14,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1983 transitions. [2023-01-27 20:22:14,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:14,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:14,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:14,837 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 1983 transitions. [2023-01-27 20:22:14,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 218 flow [2023-01-27 20:22:14,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:22:14,846 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 132 flow [2023-01-27 20:22:14,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2023-01-27 20:22:14,851 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-01-27 20:22:14,852 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 132 flow [2023-01-27 20:22:14,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:14,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:14,853 INFO L208 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] [2023-01-27 20:22:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:22:14,853 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)] === [2023-01-27 20:22:14,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2065041558, now seen corresponding path program 1 times [2023-01-27 20:22:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592504282] [2023-01-27 20:22:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:22:15,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592504282] [2023-01-27 20:22:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592504282] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434936733] [2023-01-27 20:22:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:15,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:15,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:15,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:15,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:22:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:15,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:22:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:22:15,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:22:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:22:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434936733] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:22:15,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:22:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-27 20:22:15,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787121614] [2023-01-27 20:22:15,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:22:15,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:22:15,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:22:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:22:15,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-27 20:22:15,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 132 flow. Second operand has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:15,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:15,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-27 20:22:15,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:15,921 INFO L130 PetriNetUnfolder]: 2608/3512 cut-off events. [2023-01-27 20:22:15,921 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-01-27 20:22:15,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7161 conditions, 3512 events. 2608/3512 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12508 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7112. Up to 3501 conditions per place. [2023-01-27 20:22:15,933 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 44 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2023-01-27 20:22:15,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 286 flow [2023-01-27 20:22:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:22:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:22:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3926 transitions. [2023-01-27 20:22:15,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40692371475953565 [2023-01-27 20:22:15,941 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3926 transitions. [2023-01-27 20:22:15,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3926 transitions. [2023-01-27 20:22:15,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:15,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3926 transitions. [2023-01-27 20:22:15,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 654.3333333333334) internal successors, (3926), 6 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:15,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:15,964 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:15,964 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 132 flow. Second operand 6 states and 3926 transitions. [2023-01-27 20:22:15,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 286 flow [2023-01-27 20:22:15,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:15,966 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 222 flow [2023-01-27 20:22:15,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-01-27 20:22:15,966 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-01-27 20:22:15,966 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 222 flow [2023-01-27 20:22:15,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:15,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:15,969 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:15,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 20:22:16,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:16,176 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)] === [2023-01-27 20:22:16,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 773664469, now seen corresponding path program 2 times [2023-01-27 20:22:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:16,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613375391] [2023-01-27 20:22:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:16,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:22:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613375391] [2023-01-27 20:22:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613375391] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129106503] [2023-01-27 20:22:16,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:22:16,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:16,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:16,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:16,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:22:16,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:22:16,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:22:16,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:22:16,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:22:17,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:22:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129106503] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:17,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:22:17,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-01-27 20:22:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127648745] [2023-01-27 20:22:17,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:17,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:22:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:22:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:22:17,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:22:17,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:17,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:17,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:22:17,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:19,566 INFO L130 PetriNetUnfolder]: 2934/4017 cut-off events. [2023-01-27 20:22:19,566 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-27 20:22:19,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 4017 events. 2934/4017 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15676 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8125. Up to 3431 conditions per place. [2023-01-27 20:22:19,586 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 96 selfloop transitions, 2 changer transitions 7/105 dead transitions. [2023-01-27 20:22:19,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 536 flow [2023-01-27 20:22:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:22:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:22:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3169 transitions. [2023-01-27 20:22:19,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941542288557214 [2023-01-27 20:22:19,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3169 transitions. [2023-01-27 20:22:19,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3169 transitions. [2023-01-27 20:22:19,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:19,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3169 transitions. [2023-01-27 20:22:19,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 633.8) internal successors, (3169), 5 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:19,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:19,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:19,647 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 222 flow. Second operand 5 states and 3169 transitions. [2023-01-27 20:22:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 536 flow [2023-01-27 20:22:19,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 105 transitions, 512 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:19,653 INFO L231 Difference]: Finished difference. Result has 56 places, 60 transitions, 213 flow [2023-01-27 20:22:19,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=56, PETRI_TRANSITIONS=60} [2023-01-27 20:22:19,654 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-01-27 20:22:19,654 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 60 transitions, 213 flow [2023-01-27 20:22:19,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:19,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:19,655 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:19,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:22:19,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-27 20:22:19,862 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)] === [2023-01-27 20:22:19,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1680310845, now seen corresponding path program 3 times [2023-01-27 20:22:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:19,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47505311] [2023-01-27 20:22:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:22:20,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:20,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47505311] [2023-01-27 20:22:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47505311] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099480936] [2023-01-27 20:22:20,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:22:20,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:20,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:20,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:22:20,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:22:20,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:22:20,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:22:20,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:22:21,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:22:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099480936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:21,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:22:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-01-27 20:22:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184557684] [2023-01-27 20:22:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:21,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:22:21,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:21,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:22:21,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:22:21,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:22:21,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 60 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:21,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:21,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:22:21,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:22,650 INFO L130 PetriNetUnfolder]: 3124/4357 cut-off events. [2023-01-27 20:22:22,650 INFO L131 PetriNetUnfolder]: For 701/701 co-relation queries the response was YES. [2023-01-27 20:22:22,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 4357 events. 3124/4357 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18094 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9371. Up to 3869 conditions per place. [2023-01-27 20:22:22,703 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 100 selfloop transitions, 3 changer transitions 7/110 dead transitions. [2023-01-27 20:22:22,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 110 transitions, 555 flow [2023-01-27 20:22:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:22:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:22:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3173 transitions. [2023-01-27 20:22:22,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39465174129353237 [2023-01-27 20:22:22,710 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3173 transitions. [2023-01-27 20:22:22,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3173 transitions. [2023-01-27 20:22:22,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:22,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3173 transitions. [2023-01-27 20:22:22,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 634.6) internal successors, (3173), 5 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:22,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:22,725 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:22,725 INFO L175 Difference]: Start difference. First operand has 56 places, 60 transitions, 213 flow. Second operand 5 states and 3173 transitions. [2023-01-27 20:22:22,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 110 transitions, 555 flow [2023-01-27 20:22:22,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 546 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 20:22:22,728 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 230 flow [2023-01-27 20:22:22,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-01-27 20:22:22,729 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-01-27 20:22:22,729 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 230 flow [2023-01-27 20:22:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:22,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:22,730 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:22,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:22:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:22,935 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)] === [2023-01-27 20:22:22,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1405257897, now seen corresponding path program 4 times [2023-01-27 20:22:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854760900] [2023-01-27 20:22:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:22:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:23,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854760900] [2023-01-27 20:22:23,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854760900] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:23,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999628027] [2023-01-27 20:22:23,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:22:23,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:23,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:23,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:23,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:22:23,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:22:23,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:22:23,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:22:23,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:22:23,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:22:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:22:23,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999628027] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:22:23,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:22:23,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-27 20:22:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664802987] [2023-01-27 20:22:23,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:22:23,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:22:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:23,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:22:23,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:22:23,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-27 20:22:23,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 230 flow. Second operand has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:23,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:23,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-27 20:22:23,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:24,248 INFO L130 PetriNetUnfolder]: 3123/4352 cut-off events. [2023-01-27 20:22:24,248 INFO L131 PetriNetUnfolder]: For 1787/1787 co-relation queries the response was YES. [2023-01-27 20:22:24,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9913 conditions, 4352 events. 3123/4352 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17812 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 9879. Up to 4338 conditions per place. [2023-01-27 20:22:24,268 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 46 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2023-01-27 20:22:24,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 376 flow [2023-01-27 20:22:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4566 transitions. [2023-01-27 20:22:24,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056503198294243 [2023-01-27 20:22:24,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4566 transitions. [2023-01-27 20:22:24,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4566 transitions. [2023-01-27 20:22:24,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:24,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4566 transitions. [2023-01-27 20:22:24,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 652.2857142857143) internal successors, (4566), 7 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:24,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:24,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:24,296 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 230 flow. Second operand 7 states and 4566 transitions. [2023-01-27 20:22:24,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 376 flow [2023-01-27 20:22:24,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 370 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:22:24,300 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 292 flow [2023-01-27 20:22:24,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-01-27 20:22:24,312 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-01-27 20:22:24,312 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 292 flow [2023-01-27 20:22:24,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:24,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:24,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:24,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:22:24,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:24,518 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)] === [2023-01-27 20:22:24,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash -472303414, now seen corresponding path program 5 times [2023-01-27 20:22:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:24,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358920741] [2023-01-27 20:22:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:25,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358920741] [2023-01-27 20:22:25,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358920741] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:25,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:25,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:22:25,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075925506] [2023-01-27 20:22:25,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:25,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:22:25,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:22:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:22:25,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:22:25,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:25,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:25,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:22:25,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:27,991 INFO L130 PetriNetUnfolder]: 7479/10347 cut-off events. [2023-01-27 20:22:27,991 INFO L131 PetriNetUnfolder]: For 1820/1820 co-relation queries the response was YES. [2023-01-27 20:22:28,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22274 conditions, 10347 events. 7479/10347 cut-off events. For 1820/1820 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 51307 event pairs, 1252 based on Foata normal form. 1/8396 useless extension candidates. Maximal degree in co-relation 22161. Up to 3749 conditions per place. [2023-01-27 20:22:28,025 INFO L137 encePairwiseOnDemand]: 1595/1608 looper letters, 156 selfloop transitions, 42 changer transitions 1/199 dead transitions. [2023-01-27 20:22:28,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 199 transitions, 1028 flow [2023-01-27 20:22:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4485 transitions. [2023-01-27 20:22:28,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39845415778251597 [2023-01-27 20:22:28,032 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4485 transitions. [2023-01-27 20:22:28,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4485 transitions. [2023-01-27 20:22:28,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:28,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4485 transitions. [2023-01-27 20:22:28,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 640.7142857142857) internal successors, (4485), 7 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:28,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:28,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:28,051 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 292 flow. Second operand 7 states and 4485 transitions. [2023-01-27 20:22:28,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 199 transitions, 1028 flow [2023-01-27 20:22:28,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 199 transitions, 992 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 20:22:28,069 INFO L231 Difference]: Finished difference. Result has 71 places, 107 transitions, 583 flow [2023-01-27 20:22:28,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=71, PETRI_TRANSITIONS=107} [2023-01-27 20:22:28,071 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-01-27 20:22:28,071 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 107 transitions, 583 flow [2023-01-27 20:22:28,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:28,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:28,072 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:28,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:22:28,072 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)] === [2023-01-27 20:22:28,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:28,073 INFO L85 PathProgramCache]: Analyzing trace with hash 952440716, now seen corresponding path program 6 times [2023-01-27 20:22:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:28,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453904769] [2023-01-27 20:22:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:28,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:29,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453904769] [2023-01-27 20:22:29,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453904769] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:29,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:29,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:22:29,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838898479] [2023-01-27 20:22:29,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:29,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:22:29,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:22:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:22:29,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:22:29,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 107 transitions, 583 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:29,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:29,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:22:29,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:32,517 INFO L130 PetriNetUnfolder]: 9673/13376 cut-off events. [2023-01-27 20:22:32,518 INFO L131 PetriNetUnfolder]: For 9800/9800 co-relation queries the response was YES. [2023-01-27 20:22:32,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38275 conditions, 13376 events. 9673/13376 cut-off events. For 9800/9800 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 67067 event pairs, 2739 based on Foata normal form. 1/11107 useless extension candidates. Maximal degree in co-relation 38175. Up to 7196 conditions per place. [2023-01-27 20:22:32,630 INFO L137 encePairwiseOnDemand]: 1595/1608 looper letters, 151 selfloop transitions, 47 changer transitions 2/200 dead transitions. [2023-01-27 20:22:32,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1371 flow [2023-01-27 20:22:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:22:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:22:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3189 transitions. [2023-01-27 20:22:32,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966417910447761 [2023-01-27 20:22:32,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3189 transitions. [2023-01-27 20:22:32,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3189 transitions. [2023-01-27 20:22:32,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:32,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3189 transitions. [2023-01-27 20:22:32,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 637.8) internal successors, (3189), 5 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,647 INFO L175 Difference]: Start difference. First operand has 71 places, 107 transitions, 583 flow. Second operand 5 states and 3189 transitions. [2023-01-27 20:22:32,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1371 flow [2023-01-27 20:22:32,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 200 transitions, 1363 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 20:22:32,731 INFO L231 Difference]: Finished difference. Result has 79 places, 144 transitions, 1035 flow [2023-01-27 20:22:32,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=79, PETRI_TRANSITIONS=144} [2023-01-27 20:22:32,732 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2023-01-27 20:22:32,732 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 144 transitions, 1035 flow [2023-01-27 20:22:32,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:32,733 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:32,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:22:32,733 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)] === [2023-01-27 20:22:32,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1010676078, now seen corresponding path program 7 times [2023-01-27 20:22:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:32,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884482139] [2023-01-27 20:22:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884482139] [2023-01-27 20:22:33,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884482139] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:33,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:22:33,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009233151] [2023-01-27 20:22:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:33,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:22:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:22:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:22:33,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:22:33,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 144 transitions, 1035 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:33,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:22:33,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:36,722 INFO L130 PetriNetUnfolder]: 10088/14013 cut-off events. [2023-01-27 20:22:36,722 INFO L131 PetriNetUnfolder]: For 18963/18963 co-relation queries the response was YES. [2023-01-27 20:22:36,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44718 conditions, 14013 events. 10088/14013 cut-off events. For 18963/18963 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 71621 event pairs, 4629 based on Foata normal form. 1/11640 useless extension candidates. Maximal degree in co-relation 44614. Up to 11506 conditions per place. [2023-01-27 20:22:36,843 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 198 selfloop transitions, 43 changer transitions 2/243 dead transitions. [2023-01-27 20:22:36,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 243 transitions, 2044 flow [2023-01-27 20:22:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:22:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:22:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3199 transitions. [2023-01-27 20:22:36,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978855721393035 [2023-01-27 20:22:36,848 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3199 transitions. [2023-01-27 20:22:36,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3199 transitions. [2023-01-27 20:22:36,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:36,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3199 transitions. [2023-01-27 20:22:36,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 639.8) internal successors, (3199), 5 states have internal predecessors, (3199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:36,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:37,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:37,053 INFO L175 Difference]: Start difference. First operand has 79 places, 144 transitions, 1035 flow. Second operand 5 states and 3199 transitions. [2023-01-27 20:22:37,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 243 transitions, 2044 flow [2023-01-27 20:22:37,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 243 transitions, 2032 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-01-27 20:22:37,199 INFO L231 Difference]: Finished difference. Result has 86 places, 171 transitions, 1464 flow [2023-01-27 20:22:37,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1464, PETRI_PLACES=86, PETRI_TRANSITIONS=171} [2023-01-27 20:22:37,199 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2023-01-27 20:22:37,199 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 171 transitions, 1464 flow [2023-01-27 20:22:37,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:37,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:37,200 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:22:37,201 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)] === [2023-01-27 20:22:37,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1354860510, now seen corresponding path program 8 times [2023-01-27 20:22:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:37,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256082544] [2023-01-27 20:22:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:38,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256082544] [2023-01-27 20:22:38,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256082544] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:38,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:38,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:22:38,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95223219] [2023-01-27 20:22:38,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:38,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:22:38,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:38,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:22:38,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:22:38,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:22:38,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 171 transitions, 1464 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:38,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:38,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:22:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:41,178 INFO L130 PetriNetUnfolder]: 10233/14236 cut-off events. [2023-01-27 20:22:41,178 INFO L131 PetriNetUnfolder]: For 27028/27028 co-relation queries the response was YES. [2023-01-27 20:22:41,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49716 conditions, 14236 events. 10233/14236 cut-off events. For 27028/27028 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 74045 event pairs, 2601 based on Foata normal form. 1/11817 useless extension candidates. Maximal degree in co-relation 49608. Up to 7212 conditions per place. [2023-01-27 20:22:41,384 INFO L137 encePairwiseOnDemand]: 1597/1608 looper letters, 190 selfloop transitions, 47 changer transitions 2/239 dead transitions. [2023-01-27 20:22:41,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 239 transitions, 2269 flow [2023-01-27 20:22:41,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:22:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:22:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3194 transitions. [2023-01-27 20:22:41,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972636815920398 [2023-01-27 20:22:41,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3194 transitions. [2023-01-27 20:22:41,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3194 transitions. [2023-01-27 20:22:41,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:41,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3194 transitions. [2023-01-27 20:22:41,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 638.8) internal successors, (3194), 5 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,407 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,407 INFO L175 Difference]: Start difference. First operand has 86 places, 171 transitions, 1464 flow. Second operand 5 states and 3194 transitions. [2023-01-27 20:22:41,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 239 transitions, 2269 flow [2023-01-27 20:22:41,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 239 transitions, 2261 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 20:22:41,715 INFO L231 Difference]: Finished difference. Result has 92 places, 180 transitions, 1699 flow [2023-01-27 20:22:41,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1699, PETRI_PLACES=92, PETRI_TRANSITIONS=180} [2023-01-27 20:22:41,716 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-01-27 20:22:41,716 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 180 transitions, 1699 flow [2023-01-27 20:22:41,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:41,736 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:41,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:22:41,736 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)] === [2023-01-27 20:22:41,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:41,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1151516539, now seen corresponding path program 1 times [2023-01-27 20:22:41,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:41,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662105001] [2023-01-27 20:22:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:41,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662105001] [2023-01-27 20:22:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662105001] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344816132] [2023-01-27 20:22:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:41,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:41,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-27 20:22:41,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 180 transitions, 1699 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:41,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-27 20:22:41,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:45,647 INFO L130 PetriNetUnfolder]: 14718/20390 cut-off events. [2023-01-27 20:22:45,647 INFO L131 PetriNetUnfolder]: For 46162/46162 co-relation queries the response was YES. [2023-01-27 20:22:45,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74089 conditions, 20390 events. 14718/20390 cut-off events. For 46162/46162 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 106906 event pairs, 5671 based on Foata normal form. 280/17004 useless extension candidates. Maximal degree in co-relation 73978. Up to 13705 conditions per place. [2023-01-27 20:22:45,834 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 223 selfloop transitions, 12 changer transitions 0/235 dead transitions. [2023-01-27 20:22:45,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 235 transitions, 2581 flow [2023-01-27 20:22:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2008 transitions. [2023-01-27 20:22:45,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41625207296849087 [2023-01-27 20:22:45,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2008 transitions. [2023-01-27 20:22:45,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2008 transitions. [2023-01-27 20:22:45,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:45,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2008 transitions. [2023-01-27 20:22:45,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 669.3333333333334) internal successors, (2008), 3 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:45,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:45,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:45,866 INFO L175 Difference]: Start difference. First operand has 92 places, 180 transitions, 1699 flow. Second operand 3 states and 2008 transitions. [2023-01-27 20:22:45,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 235 transitions, 2581 flow [2023-01-27 20:22:46,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 235 transitions, 2490 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:46,504 INFO L231 Difference]: Finished difference. Result has 94 places, 170 transitions, 1544 flow [2023-01-27 20:22:46,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1544, PETRI_PLACES=94, PETRI_TRANSITIONS=170} [2023-01-27 20:22:46,508 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2023-01-27 20:22:46,509 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 170 transitions, 1544 flow [2023-01-27 20:22:46,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:46,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:46,509 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:46,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 20:22:46,509 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)] === [2023-01-27 20:22:46,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash -977446447, now seen corresponding path program 1 times [2023-01-27 20:22:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:46,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673423142] [2023-01-27 20:22:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:46,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:46,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:46,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673423142] [2023-01-27 20:22:46,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673423142] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:46,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:46,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:46,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750129879] [2023-01-27 20:22:46,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:46,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:46,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:46,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:46,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-27 20:22:46,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 170 transitions, 1544 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:46,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:46,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-27 20:22:46,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:50,827 INFO L130 PetriNetUnfolder]: 19754/27154 cut-off events. [2023-01-27 20:22:50,827 INFO L131 PetriNetUnfolder]: For 60626/60626 co-relation queries the response was YES. [2023-01-27 20:22:51,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95880 conditions, 27154 events. 19754/27154 cut-off events. For 60626/60626 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 142925 event pairs, 7741 based on Foata normal form. 0/22232 useless extension candidates. Maximal degree in co-relation 95768. Up to 20577 conditions per place. [2023-01-27 20:22:51,122 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 219 selfloop transitions, 8 changer transitions 0/227 dead transitions. [2023-01-27 20:22:51,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 227 transitions, 2405 flow [2023-01-27 20:22:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2006 transitions. [2023-01-27 20:22:51,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158374792703151 [2023-01-27 20:22:51,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2006 transitions. [2023-01-27 20:22:51,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2006 transitions. [2023-01-27 20:22:51,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:51,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2006 transitions. [2023-01-27 20:22:51,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 668.6666666666666) internal successors, (2006), 3 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:51,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:51,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:51,157 INFO L175 Difference]: Start difference. First operand has 94 places, 170 transitions, 1544 flow. Second operand 3 states and 2006 transitions. [2023-01-27 20:22:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 227 transitions, 2405 flow [2023-01-27 20:22:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 227 transitions, 2388 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:51,869 INFO L231 Difference]: Finished difference. Result has 96 places, 171 transitions, 1562 flow [2023-01-27 20:22:51,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1562, PETRI_PLACES=96, PETRI_TRANSITIONS=171} [2023-01-27 20:22:51,870 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2023-01-27 20:22:51,870 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 171 transitions, 1562 flow [2023-01-27 20:22:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:51,871 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:22:51,871 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)] === [2023-01-27 20:22:51,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1136703417, now seen corresponding path program 1 times [2023-01-27 20:22:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547301541] [2023-01-27 20:22:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:52,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:52,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547301541] [2023-01-27 20:22:52,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547301541] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:52,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:52,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:52,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770660106] [2023-01-27 20:22:52,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:52,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:52,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:52,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:52,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-27 20:22:52,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 171 transitions, 1562 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:52,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:52,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-27 20:22:52,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:57,945 INFO L130 PetriNetUnfolder]: 21302/29548 cut-off events. [2023-01-27 20:22:57,945 INFO L131 PetriNetUnfolder]: For 67464/67464 co-relation queries the response was YES. [2023-01-27 20:22:58,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103929 conditions, 29548 events. 21302/29548 cut-off events. For 67464/67464 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 161445 event pairs, 9453 based on Foata normal form. 0/25586 useless extension candidates. Maximal degree in co-relation 103816. Up to 24393 conditions per place. [2023-01-27 20:22:58,233 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 187 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2023-01-27 20:22:58,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 206 transitions, 2158 flow [2023-01-27 20:22:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2010 transitions. [2023-01-27 20:22:58,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-27 20:22:58,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2010 transitions. [2023-01-27 20:22:58,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2010 transitions. [2023-01-27 20:22:58,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:58,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2010 transitions. [2023-01-27 20:22:58,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.0) internal successors, (2010), 3 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:58,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:58,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:58,249 INFO L175 Difference]: Start difference. First operand has 96 places, 171 transitions, 1562 flow. Second operand 3 states and 2010 transitions. [2023-01-27 20:22:58,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 206 transitions, 2158 flow [2023-01-27 20:22:59,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 206 transitions, 2147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:59,188 INFO L231 Difference]: Finished difference. Result has 98 places, 164 transitions, 1534 flow [2023-01-27 20:22:59,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1534, PETRI_PLACES=98, PETRI_TRANSITIONS=164} [2023-01-27 20:22:59,191 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2023-01-27 20:22:59,191 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 164 transitions, 1534 flow [2023-01-27 20:22:59,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:59,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:59,192 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:22:59,192 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)] === [2023-01-27 20:22:59,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash -345962665, now seen corresponding path program 1 times [2023-01-27 20:22:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686390044] [2023-01-27 20:22:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686390044] [2023-01-27 20:22:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686390044] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759964141] [2023-01-27 20:22:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:59,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:59,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:59,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:59,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:22:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:59,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:22:59,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:59,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:23:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:00,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759964141] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:23:00,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:23:00,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-27 20:23:00,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114581716] [2023-01-27 20:23:00,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:23:00,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:23:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:23:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:23:00,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-27 20:23:00,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 164 transitions, 1534 flow. Second operand has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:00,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:00,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-27 20:23:00,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:05,811 INFO L130 PetriNetUnfolder]: 21832/30378 cut-off events. [2023-01-27 20:23:05,812 INFO L131 PetriNetUnfolder]: For 89086/89086 co-relation queries the response was YES. [2023-01-27 20:23:06,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112234 conditions, 30378 events. 21832/30378 cut-off events. For 89086/89086 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 168731 event pairs, 6353 based on Foata normal form. 4/26240 useless extension candidates. Maximal degree in co-relation 112120. Up to 27534 conditions per place. [2023-01-27 20:23:06,113 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 176 selfloop transitions, 12 changer transitions 53/241 dead transitions. [2023-01-27 20:23:06,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 241 transitions, 2573 flow [2023-01-27 20:23:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:23:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:23:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2695 transitions. [2023-01-27 20:23:06,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189987562189055 [2023-01-27 20:23:06,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2695 transitions. [2023-01-27 20:23:06,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2695 transitions. [2023-01-27 20:23:06,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:06,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2695 transitions. [2023-01-27 20:23:06,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 673.75) internal successors, (2695), 4 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,124 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,124 INFO L175 Difference]: Start difference. First operand has 98 places, 164 transitions, 1534 flow. Second operand 4 states and 2695 transitions. [2023-01-27 20:23:06,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 241 transitions, 2573 flow [2023-01-27 20:23:06,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 241 transitions, 2532 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:06,892 INFO L231 Difference]: Finished difference. Result has 103 places, 154 transitions, 1463 flow [2023-01-27 20:23:06,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1463, PETRI_PLACES=103, PETRI_TRANSITIONS=154} [2023-01-27 20:23:06,894 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2023-01-27 20:23:06,894 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 154 transitions, 1463 flow [2023-01-27 20:23:06,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:06,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:06,895 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:06,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:23:07,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-27 20:23:07,102 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)] === [2023-01-27 20:23:07,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1281119567, now seen corresponding path program 2 times [2023-01-27 20:23:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:07,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864640493] [2023-01-27 20:23:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:23:07,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:07,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864640493] [2023-01-27 20:23:07,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864640493] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:07,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:07,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:23:07,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325730825] [2023-01-27 20:23:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:07,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:23:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:23:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:23:07,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 642 out of 1608 [2023-01-27 20:23:07,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 154 transitions, 1463 flow. Second operand has 5 states, 5 states have (on average 646.8) internal successors, (3234), 5 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:07,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:07,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 642 of 1608 [2023-01-27 20:23:07,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:13,362 INFO L130 PetriNetUnfolder]: 23686/33394 cut-off events. [2023-01-27 20:23:13,362 INFO L131 PetriNetUnfolder]: For 83084/83084 co-relation queries the response was YES. [2023-01-27 20:23:13,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116472 conditions, 33394 events. 23686/33394 cut-off events. For 83084/83084 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 193830 event pairs, 10465 based on Foata normal form. 4/29010 useless extension candidates. Maximal degree in co-relation 116370. Up to 25764 conditions per place. [2023-01-27 20:23:13,672 INFO L137 encePairwiseOnDemand]: 1598/1608 looper letters, 216 selfloop transitions, 25 changer transitions 37/278 dead transitions. [2023-01-27 20:23:13,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 278 transitions, 2720 flow [2023-01-27 20:23:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:23:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:23:13,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3352 transitions. [2023-01-27 20:23:13,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41691542288557215 [2023-01-27 20:23:13,691 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3352 transitions. [2023-01-27 20:23:13,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3352 transitions. [2023-01-27 20:23:13,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:13,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3352 transitions. [2023-01-27 20:23:13,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 670.4) internal successors, (3352), 5 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:13,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:13,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:13,698 INFO L175 Difference]: Start difference. First operand has 103 places, 154 transitions, 1463 flow. Second operand 5 states and 3352 transitions. [2023-01-27 20:23:13,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 278 transitions, 2720 flow [2023-01-27 20:23:14,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 278 transitions, 2671 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-27 20:23:14,651 INFO L231 Difference]: Finished difference. Result has 108 places, 151 transitions, 1399 flow [2023-01-27 20:23:14,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1399, PETRI_PLACES=108, PETRI_TRANSITIONS=151} [2023-01-27 20:23:14,652 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2023-01-27 20:23:14,652 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 151 transitions, 1399 flow [2023-01-27 20:23:14,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 646.8) internal successors, (3234), 5 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:14,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:14,652 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:14,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 20:23:14,654 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)] === [2023-01-27 20:23:14,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:14,654 INFO L85 PathProgramCache]: Analyzing trace with hash 774602130, now seen corresponding path program 1 times [2023-01-27 20:23:14,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:14,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212966829] [2023-01-27 20:23:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:14,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:17,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:17,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212966829] [2023-01-27 20:23:17,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212966829] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:17,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996474020] [2023-01-27 20:23:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:17,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:17,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:17,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:23:17,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:23:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:17,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 20:23:17,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:17,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:23:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996474020] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:23:18,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:23:18,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 18 [2023-01-27 20:23:18,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549970106] [2023-01-27 20:23:18,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:23:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 20:23:18,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 20:23:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-01-27 20:23:18,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 1608 [2023-01-27 20:23:18,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 151 transitions, 1399 flow. Second operand has 19 states, 19 states have (on average 542.0) internal successors, (10298), 19 states have internal predecessors, (10298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:18,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:18,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 1608 [2023-01-27 20:23:18,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:47,099 INFO L130 PetriNetUnfolder]: 60488/84802 cut-off events. [2023-01-27 20:23:47,099 INFO L131 PetriNetUnfolder]: For 210570/210570 co-relation queries the response was YES. [2023-01-27 20:23:47,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300185 conditions, 84802 events. 60488/84802 cut-off events. For 210570/210570 co-relation queries the response was YES. Maximal size of possible extension queue 2048. Compared 550289 event pairs, 2556 based on Foata normal form. 95/73114 useless extension candidates. Maximal degree in co-relation 300067. Up to 20483 conditions per place. [2023-01-27 20:23:48,128 INFO L137 encePairwiseOnDemand]: 1584/1608 looper letters, 804 selfloop transitions, 372 changer transitions 215/1391 dead transitions. [2023-01-27 20:23:48,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1391 transitions, 12469 flow [2023-01-27 20:23:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-01-27 20:23:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-01-27 20:23:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 30379 transitions. [2023-01-27 20:23:48,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434984170058797 [2023-01-27 20:23:48,164 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 30379 transitions. [2023-01-27 20:23:48,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 30379 transitions. [2023-01-27 20:23:48,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:48,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 30379 transitions. [2023-01-27 20:23:48,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 552.3454545454546) internal successors, (30379), 55 states have internal predecessors, (30379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:48,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 1608.0) internal successors, (90048), 56 states have internal predecessors, (90048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:48,343 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 1608.0) internal successors, (90048), 56 states have internal predecessors, (90048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:48,343 INFO L175 Difference]: Start difference. First operand has 108 places, 151 transitions, 1399 flow. Second operand 55 states and 30379 transitions. [2023-01-27 20:23:48,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1391 transitions, 12469 flow [2023-01-27 20:24:03,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 1391 transitions, 12134 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-01-27 20:24:03,879 INFO L231 Difference]: Finished difference. Result has 202 places, 522 transitions, 6233 flow [2023-01-27 20:24:03,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=6233, PETRI_PLACES=202, PETRI_TRANSITIONS=522} [2023-01-27 20:24:03,880 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 156 predicate places. [2023-01-27 20:24:03,880 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 522 transitions, 6233 flow [2023-01-27 20:24:03,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 542.0) internal successors, (10298), 19 states have internal predecessors, (10298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:03,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:03,881 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:03,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 20:24:04,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 20:24:04,091 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)] === [2023-01-27 20:24:04,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 138443101, now seen corresponding path program 1 times [2023-01-27 20:24:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533055788] [2023-01-27 20:24:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:24:04,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533055788] [2023-01-27 20:24:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533055788] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:24:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593436181] [2023-01-27 20:24:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:04,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:24:04,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:24:04,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:24:04,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:24:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:04,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:24:04,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:24:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:24:04,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:24:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:24:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593436181] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:24:05,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:24:05,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-27 20:24:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682541138] [2023-01-27 20:24:05,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:24:05,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:24:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:24:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:24:05,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-27 20:24:05,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 522 transitions, 6233 flow. Second operand has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:05,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:05,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-27 20:24:05,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:26,655 INFO L130 PetriNetUnfolder]: 56846/79425 cut-off events. [2023-01-27 20:24:26,655 INFO L131 PetriNetUnfolder]: For 820434/820434 co-relation queries the response was YES. [2023-01-27 20:24:28,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415880 conditions, 79425 events. 56846/79425 cut-off events. For 820434/820434 co-relation queries the response was YES. Maximal size of possible extension queue 1911. Compared 509818 event pairs, 20760 based on Foata normal form. 2/71097 useless extension candidates. Maximal degree in co-relation 415718. Up to 78712 conditions per place. [2023-01-27 20:24:28,498 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 514 selfloop transitions, 17 changer transitions 34/565 dead transitions. [2023-01-27 20:24:28,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 565 transitions, 7799 flow [2023-01-27 20:24:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:24:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:24:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2682 transitions. [2023-01-27 20:24:28,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41697761194029853 [2023-01-27 20:24:28,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2682 transitions. [2023-01-27 20:24:28,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2682 transitions. [2023-01-27 20:24:28,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:28,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2682 transitions. [2023-01-27 20:24:28,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 670.5) internal successors, (2682), 4 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:28,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:28,512 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:28,512 INFO L175 Difference]: Start difference. First operand has 202 places, 522 transitions, 6233 flow. Second operand 4 states and 2682 transitions. [2023-01-27 20:24:28,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 565 transitions, 7799 flow [2023-01-27 20:24:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 565 transitions, 7622 flow, removed 83 selfloop flow, removed 12 redundant places. [2023-01-27 20:24:42,890 INFO L231 Difference]: Finished difference. Result has 182 places, 520 transitions, 6152 flow [2023-01-27 20:24:42,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6152, PETRI_PLACES=182, PETRI_TRANSITIONS=520} [2023-01-27 20:24:42,897 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2023-01-27 20:24:42,897 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 520 transitions, 6152 flow [2023-01-27 20:24:42,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 660.0) internal successors, (3960), 6 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:42,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:42,898 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:42,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 20:24:43,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:24:43,105 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)] === [2023-01-27 20:24:43,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:43,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1248017317, now seen corresponding path program 2 times [2023-01-27 20:24:43,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281141379] [2023-01-27 20:24:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:43,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:24:43,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:43,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281141379] [2023-01-27 20:24:43,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281141379] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:43,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:43,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:24:43,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008528479] [2023-01-27 20:24:43,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:43,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:24:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:24:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:24:43,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-27 20:24:43,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 520 transitions, 6152 flow. Second operand has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:43,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:43,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-27 20:24:43,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:03,168 INFO L130 PetriNetUnfolder]: 56465/78816 cut-off events. [2023-01-27 20:25:03,168 INFO L131 PetriNetUnfolder]: For 749513/749513 co-relation queries the response was YES. [2023-01-27 20:25:04,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393717 conditions, 78816 events. 56465/78816 cut-off events. For 749513/749513 co-relation queries the response was YES. Maximal size of possible extension queue 1902. Compared 504732 event pairs, 27498 based on Foata normal form. 2/70516 useless extension candidates. Maximal degree in co-relation 393584. Up to 78291 conditions per place. [2023-01-27 20:25:05,014 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 508 selfloop transitions, 0 changer transitions 41/549 dead transitions. [2023-01-27 20:25:05,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 549 transitions, 7461 flow [2023-01-27 20:25:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:25:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:25:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2676 transitions. [2023-01-27 20:25:05,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416044776119403 [2023-01-27 20:25:05,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2676 transitions. [2023-01-27 20:25:05,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2676 transitions. [2023-01-27 20:25:05,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:05,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2676 transitions. [2023-01-27 20:25:05,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:05,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:05,050 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:05,050 INFO L175 Difference]: Start difference. First operand has 182 places, 520 transitions, 6152 flow. Second operand 4 states and 2676 transitions. [2023-01-27 20:25:05,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 549 transitions, 7461 flow [2023-01-27 20:25:10,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 549 transitions, 7273 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-01-27 20:25:10,594 INFO L231 Difference]: Finished difference. Result has 176 places, 508 transitions, 5792 flow [2023-01-27 20:25:10,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5972, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5792, PETRI_PLACES=176, PETRI_TRANSITIONS=508} [2023-01-27 20:25:10,595 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 130 predicate places. [2023-01-27 20:25:10,595 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 508 transitions, 5792 flow [2023-01-27 20:25:10,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:10,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:25:10,596 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:25:10,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 20:25:10,596 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)] === [2023-01-27 20:25:10,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:25:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1938677828, now seen corresponding path program 2 times [2023-01-27 20:25:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:25:10,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116745093] [2023-01-27 20:25:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:25:10,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:25:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:25:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:25:11,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:25:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116745093] [2023-01-27 20:25:11,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116745093] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:25:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237661455] [2023-01-27 20:25:11,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:25:11,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:25:11,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:25:11,326 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:25:11,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:25:11,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:25:11,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:25:11,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 20:25:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:25:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:25:11,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:25:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:25:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237661455] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:25:13,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:25:13,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-27 20:25:13,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662313258] [2023-01-27 20:25:13,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:25:13,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:25:13,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:25:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:25:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:25:13,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-27 20:25:13,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 508 transitions, 5792 flow. Second operand has 8 states, 8 states have (on average 637.25) internal successors, (5098), 8 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:13,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:25:13,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-27 20:25:13,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:25:37,020 INFO L130 PetriNetUnfolder]: 67930/94369 cut-off events. [2023-01-27 20:25:37,024 INFO L131 PetriNetUnfolder]: For 786519/786519 co-relation queries the response was YES. [2023-01-27 20:25:38,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466426 conditions, 94369 events. 67930/94369 cut-off events. For 786519/786519 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 609638 event pairs, 6942 based on Foata normal form. 104/83461 useless extension candidates. Maximal degree in co-relation 466358. Up to 49209 conditions per place. [2023-01-27 20:25:38,760 INFO L137 encePairwiseOnDemand]: 1600/1608 looper letters, 644 selfloop transitions, 92 changer transitions 49/785 dead transitions. [2023-01-27 20:25:38,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 785 transitions, 9791 flow [2023-01-27 20:25:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:25:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:25:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5238 transitions. [2023-01-27 20:25:38,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40718283582089554 [2023-01-27 20:25:38,764 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5238 transitions. [2023-01-27 20:25:38,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5238 transitions. [2023-01-27 20:25:38,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:38,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5238 transitions. [2023-01-27 20:25:38,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 654.75) internal successors, (5238), 8 states have internal predecessors, (5238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:38,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1608.0) internal successors, (14472), 9 states have internal predecessors, (14472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:38,773 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1608.0) internal successors, (14472), 9 states have internal predecessors, (14472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:38,774 INFO L175 Difference]: Start difference. First operand has 176 places, 508 transitions, 5792 flow. Second operand 8 states and 5238 transitions. [2023-01-27 20:25:38,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 785 transitions, 9791 flow [2023-01-27 20:25:45,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 785 transitions, 9400 flow, removed 136 selfloop flow, removed 8 redundant places. [2023-01-27 20:25:45,453 INFO L231 Difference]: Finished difference. Result has 171 places, 503 transitions, 5678 flow [2023-01-27 20:25:45,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5126, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5678, PETRI_PLACES=171, PETRI_TRANSITIONS=503} [2023-01-27 20:25:45,454 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2023-01-27 20:25:45,454 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 503 transitions, 5678 flow [2023-01-27 20:25:45,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 637.25) internal successors, (5098), 8 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:45,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:25:45,455 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:25:45,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 20:25:45,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 20:25:45,659 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)] === [2023-01-27 20:25:45,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:25:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash -42288596, now seen corresponding path program 3 times [2023-01-27 20:25:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:25:45,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270815246] [2023-01-27 20:25:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:25:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:25:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:25:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:25:47,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:25:47,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270815246] [2023-01-27 20:25:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270815246] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:25:47,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063459082] [2023-01-27 20:25:47,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:25:47,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:25:47,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:25:47,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:25:47,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 20:25:47,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:25:47,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:25:47,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 20:25:47,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:25:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:25:48,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:25:48,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063459082] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:25:48,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:25:48,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 17 [2023-01-27 20:25:48,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188270744] [2023-01-27 20:25:48,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:25:48,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:25:48,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:25:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:25:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-27 20:25:48,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-27 20:25:48,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 503 transitions, 5678 flow. Second operand has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:48,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:25:48,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-27 20:25:48,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:26:10,044 INFO L130 PetriNetUnfolder]: 67509/93682 cut-off events. [2023-01-27 20:26:10,044 INFO L131 PetriNetUnfolder]: For 806584/806584 co-relation queries the response was YES. [2023-01-27 20:26:11,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479197 conditions, 93682 events. 67509/93682 cut-off events. For 806584/806584 co-relation queries the response was YES. Maximal size of possible extension queue 2262. Compared 603787 event pairs, 32241 based on Foata normal form. 52/82724 useless extension candidates. Maximal degree in co-relation 479130. Up to 90312 conditions per place. [2023-01-27 20:26:11,747 INFO L137 encePairwiseOnDemand]: 1603/1608 looper letters, 538 selfloop transitions, 35 changer transitions 40/613 dead transitions. [2023-01-27 20:26:11,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 613 transitions, 7731 flow [2023-01-27 20:26:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:26:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:26:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3270 transitions. [2023-01-27 20:26:11,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40671641791044777 [2023-01-27 20:26:11,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3270 transitions. [2023-01-27 20:26:11,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3270 transitions. [2023-01-27 20:26:11,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:26:11,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3270 transitions. [2023-01-27 20:26:11,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 654.0) internal successors, (3270), 5 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:11,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:11,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:11,758 INFO L175 Difference]: Start difference. First operand has 171 places, 503 transitions, 5678 flow. Second operand 5 states and 3270 transitions. [2023-01-27 20:26:11,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 613 transitions, 7731 flow [2023-01-27 20:26:17,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 613 transitions, 7684 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-01-27 20:26:17,946 INFO L231 Difference]: Finished difference. Result has 174 places, 501 transitions, 5674 flow [2023-01-27 20:26:17,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5635, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5674, PETRI_PLACES=174, PETRI_TRANSITIONS=501} [2023-01-27 20:26:17,947 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2023-01-27 20:26:17,947 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 501 transitions, 5674 flow [2023-01-27 20:26:17,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:17,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:17,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:17,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 20:26:18,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:26:18,149 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)] === [2023-01-27 20:26:18,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1646277518, now seen corresponding path program 1 times [2023-01-27 20:26:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684568267] [2023-01-27 20:26:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:18,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:26:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:18,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684568267] [2023-01-27 20:26:18,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684568267] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:26:18,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108751769] [2023-01-27 20:26:18,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:18,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:26:18,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:26:18,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:26:18,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 20:26:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:19,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 20:26:19,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:26:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:26:19,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:26:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:26:19,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108751769] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:26:19,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:26:19,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-01-27 20:26:19,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445102522] [2023-01-27 20:26:19,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:26:19,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:26:19,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:19,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:26:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:26:19,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-27 20:26:19,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 501 transitions, 5674 flow. Second operand has 11 states, 11 states have (on average 638.0909090909091) internal successors, (7019), 11 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:19,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:19,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-27 20:26:19,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:26:43,161 INFO L130 PetriNetUnfolder]: 70298/98103 cut-off events. [2023-01-27 20:26:43,161 INFO L131 PetriNetUnfolder]: For 833376/833376 co-relation queries the response was YES. [2023-01-27 20:26:44,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498941 conditions, 98103 events. 70298/98103 cut-off events. For 833376/833376 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 643572 event pairs, 13419 based on Foata normal form. 47/86872 useless extension candidates. Maximal degree in co-relation 498873. Up to 47842 conditions per place. [2023-01-27 20:26:45,007 INFO L137 encePairwiseOnDemand]: 1600/1608 looper letters, 719 selfloop transitions, 78 changer transitions 44/841 dead transitions. [2023-01-27 20:26:45,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 841 transitions, 10289 flow [2023-01-27 20:26:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:26:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:26:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5893 transitions. [2023-01-27 20:26:45,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072001105583195 [2023-01-27 20:26:45,011 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5893 transitions. [2023-01-27 20:26:45,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5893 transitions. [2023-01-27 20:26:45,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:26:45,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5893 transitions. [2023-01-27 20:26:45,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 654.7777777777778) internal successors, (5893), 9 states have internal predecessors, (5893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:45,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1608.0) internal successors, (16080), 10 states have internal predecessors, (16080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:45,021 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1608.0) internal successors, (16080), 10 states have internal predecessors, (16080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:45,021 INFO L175 Difference]: Start difference. First operand has 174 places, 501 transitions, 5674 flow. Second operand 9 states and 5893 transitions. [2023-01-27 20:26:45,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 841 transitions, 10289 flow [2023-01-27 20:26:51,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 841 transitions, 10183 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-01-27 20:26:51,843 INFO L231 Difference]: Finished difference. Result has 181 places, 494 transitions, 5814 flow [2023-01-27 20:26:51,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5495, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5814, PETRI_PLACES=181, PETRI_TRANSITIONS=494} [2023-01-27 20:26:51,843 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 135 predicate places. [2023-01-27 20:26:51,843 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 494 transitions, 5814 flow [2023-01-27 20:26:51,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 638.0909090909091) internal successors, (7019), 11 states have internal predecessors, (7019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:51,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:26:51,845 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:26:51,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 20:26:52,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:26:52,057 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)] === [2023-01-27 20:26:52,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:26:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash 74568244, now seen corresponding path program 2 times [2023-01-27 20:26:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:26:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170616260] [2023-01-27 20:26:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:26:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:26:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:26:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:26:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:26:52,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170616260] [2023-01-27 20:26:52,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170616260] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:26:52,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:26:52,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:26:52,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955742671] [2023-01-27 20:26:52,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:26:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:26:52,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:26:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:26:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:26:52,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-27 20:26:52,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 494 transitions, 5814 flow. Second operand has 5 states, 5 states have (on average 638.2) internal successors, (3191), 5 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:26:52,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:26:52,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-27 20:26:52,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:27:15,724 INFO L130 PetriNetUnfolder]: 69974/97560 cut-off events. [2023-01-27 20:27:15,725 INFO L131 PetriNetUnfolder]: For 901563/901563 co-relation queries the response was YES. [2023-01-27 20:27:17,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515220 conditions, 97560 events. 69974/97560 cut-off events. For 901563/901563 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 639336 event pairs, 34078 based on Foata normal form. 1/86283 useless extension candidates. Maximal degree in co-relation 515152. Up to 94905 conditions per place. [2023-01-27 20:27:17,911 INFO L137 encePairwiseOnDemand]: 1602/1608 looper letters, 541 selfloop transitions, 33 changer transitions 17/591 dead transitions. [2023-01-27 20:27:17,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 591 transitions, 7688 flow [2023-01-27 20:27:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:27:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:27:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3251 transitions. [2023-01-27 20:27:17,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40435323383084576 [2023-01-27 20:27:17,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3251 transitions. [2023-01-27 20:27:17,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3251 transitions. [2023-01-27 20:27:17,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:27:17,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3251 transitions. [2023-01-27 20:27:17,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 650.2) internal successors, (3251), 5 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:17,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:17,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:17,919 INFO L175 Difference]: Start difference. First operand has 181 places, 494 transitions, 5814 flow. Second operand 5 states and 3251 transitions. [2023-01-27 20:27:17,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 591 transitions, 7688 flow [2023-01-27 20:27:25,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 591 transitions, 7588 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-01-27 20:27:25,636 INFO L231 Difference]: Finished difference. Result has 182 places, 495 transitions, 5832 flow [2023-01-27 20:27:25,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5720, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5832, PETRI_PLACES=182, PETRI_TRANSITIONS=495} [2023-01-27 20:27:25,638 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2023-01-27 20:27:25,638 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 495 transitions, 5832 flow [2023-01-27 20:27:25,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 638.2) internal successors, (3191), 5 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:25,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:27:25,639 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:27:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:27:25,639 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)] === [2023-01-27 20:27:25,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:27:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1628884612, now seen corresponding path program 3 times [2023-01-27 20:27:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:27:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046411288] [2023-01-27 20:27:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:27:25,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:27:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:27:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:27:26,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:27:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046411288] [2023-01-27 20:27:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046411288] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:27:26,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:27:26,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:27:26,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228700204] [2023-01-27 20:27:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:27:26,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:27:26,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:27:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:27:26,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:27:26,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 634 out of 1608 [2023-01-27 20:27:26,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 495 transitions, 5832 flow. Second operand has 5 states, 5 states have (on average 640.2) internal successors, (3201), 5 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:26,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:27:26,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 634 of 1608 [2023-01-27 20:27:26,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:27:54,718 INFO L130 PetriNetUnfolder]: 69943/97477 cut-off events. [2023-01-27 20:27:54,719 INFO L131 PetriNetUnfolder]: For 874017/874017 co-relation queries the response was YES. [2023-01-27 20:27:56,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512324 conditions, 97477 events. 69943/97477 cut-off events. For 874017/874017 co-relation queries the response was YES. Maximal size of possible extension queue 2368. Compared 637107 event pairs, 28753 based on Foata normal form. 1/86200 useless extension candidates. Maximal degree in co-relation 512256. Up to 80812 conditions per place. [2023-01-27 20:27:57,051 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 535 selfloop transitions, 14 changer transitions 30/579 dead transitions. [2023-01-27 20:27:57,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 579 transitions, 7693 flow [2023-01-27 20:27:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:27:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:27:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3265 transitions. [2023-01-27 20:27:57,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4060945273631841 [2023-01-27 20:27:57,054 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3265 transitions. [2023-01-27 20:27:57,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3265 transitions. [2023-01-27 20:27:57,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:27:57,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3265 transitions. [2023-01-27 20:27:57,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 653.0) internal successors, (3265), 5 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:57,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:57,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:27:57,060 INFO L175 Difference]: Start difference. First operand has 182 places, 495 transitions, 5832 flow. Second operand 5 states and 3265 transitions. [2023-01-27 20:27:57,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 579 transitions, 7693 flow [2023-01-27 20:28:06,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 579 transitions, 7647 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 20:28:06,378 INFO L231 Difference]: Finished difference. Result has 183 places, 493 transitions, 5782 flow [2023-01-27 20:28:06,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5788, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5782, PETRI_PLACES=183, PETRI_TRANSITIONS=493} [2023-01-27 20:28:06,379 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 137 predicate places. [2023-01-27 20:28:06,379 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 493 transitions, 5782 flow [2023-01-27 20:28:06,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 640.2) internal successors, (3201), 5 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:06,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:28:06,380 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:28:06,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 20:28:06,380 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)] === [2023-01-27 20:28:06,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:28:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1780197605, now seen corresponding path program 1 times [2023-01-27 20:28:06,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:28:06,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374125145] [2023-01-27 20:28:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:28:06,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:28:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:28:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:28:07,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:28:07,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374125145] [2023-01-27 20:28:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374125145] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:28:07,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:28:07,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:28:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279095196] [2023-01-27 20:28:07,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:28:07,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:28:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:28:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:28:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:28:07,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-27 20:28:07,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 493 transitions, 5782 flow. Second operand has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:07,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:28:07,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-27 20:28:07,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:28:36,113 INFO L130 PetriNetUnfolder]: 69904/97383 cut-off events. [2023-01-27 20:28:36,113 INFO L131 PetriNetUnfolder]: For 900925/900925 co-relation queries the response was YES. [2023-01-27 20:28:37,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513365 conditions, 97383 events. 69904/97383 cut-off events. For 900925/900925 co-relation queries the response was YES. Maximal size of possible extension queue 2378. Compared 631914 event pairs, 18599 based on Foata normal form. 186/86261 useless extension candidates. Maximal degree in co-relation 513298. Up to 94247 conditions per place. [2023-01-27 20:28:38,277 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 508 selfloop transitions, 31 changer transitions 0/539 dead transitions. [2023-01-27 20:28:38,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 539 transitions, 7071 flow [2023-01-27 20:28:38,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:28:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:28:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2686 transitions. [2023-01-27 20:28:38,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41759950248756217 [2023-01-27 20:28:38,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2686 transitions. [2023-01-27 20:28:38,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2686 transitions. [2023-01-27 20:28:38,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:28:38,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2686 transitions. [2023-01-27 20:28:38,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 671.5) internal successors, (2686), 4 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:38,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:38,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:38,303 INFO L175 Difference]: Start difference. First operand has 183 places, 493 transitions, 5782 flow. Second operand 4 states and 2686 transitions. [2023-01-27 20:28:38,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 539 transitions, 7071 flow [2023-01-27 20:28:47,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 539 transitions, 7053 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:28:47,288 INFO L231 Difference]: Finished difference. Result has 182 places, 477 transitions, 5697 flow [2023-01-27 20:28:47,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=5548, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5697, PETRI_PLACES=182, PETRI_TRANSITIONS=477} [2023-01-27 20:28:47,290 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2023-01-27 20:28:47,290 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 477 transitions, 5697 flow [2023-01-27 20:28:47,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:47,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:28:47,290 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:28:47,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-27 20:28:47,291 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)] === [2023-01-27 20:28:47,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:28:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1745815563, now seen corresponding path program 1 times [2023-01-27 20:28:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:28:47,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360135071] [2023-01-27 20:28:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:28:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:28:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:28:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-01-27 20:28:47,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:28:47,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360135071] [2023-01-27 20:28:47,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360135071] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:28:47,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:28:47,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:28:47,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069048730] [2023-01-27 20:28:47,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:28:47,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:28:47,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:28:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:28:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:28:47,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-27 20:28:47,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 477 transitions, 5697 flow. Second operand has 4 states, 4 states have (on average 659.25) internal successors, (2637), 4 states have internal predecessors, (2637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:28:47,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:28:47,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-27 20:28:47,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand