/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 03:36:05,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 03:36:05,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 03:36:05,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 03:36:05,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 03:36:05,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 03:36:05,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 03:36:05,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 03:36:05,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 03:36:05,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 03:36:05,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 03:36:05,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 03:36:05,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 03:36:05,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 03:36:05,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 03:36:05,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 03:36:05,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 03:36:05,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 03:36:05,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 03:36:05,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 03:36:05,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 03:36:05,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 03:36:05,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 03:36:05,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 03:36:05,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 03:36:05,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 03:36:05,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 03:36:05,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 03:36:05,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 03:36:05,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 03:36:05,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 03:36:05,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 03:36:05,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 03:36:05,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 03:36:05,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 03:36:05,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 03:36:05,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 03:36:05,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 03:36:05,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 03:36:05,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 03:36:05,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 03:36:05,336 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-RepeatedSemanticLbe.epf [2022-12-06 03:36:05,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 03:36:05,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 03:36:05,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 03:36:05,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 03:36:05,362 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 03:36:05,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 03:36:05,363 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 03:36:05,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 03:36:05,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 03:36:05,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 03:36:05,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 03:36:05,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 03:36:05,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 03:36:05,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 03:36:05,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 03:36:05,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 03:36:05,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 03:36:05,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 03:36:05,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 03:36:05,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 03:36:05,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 03:36:05,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 03:36:05,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 03:36:05,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 03:36:05,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 03:36:05,623 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 03:36:05,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2022-12-06 03:36:06,636 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 03:36:06,816 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 03:36:06,816 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2022-12-06 03:36:06,822 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11bbbca2/e2c5c3df11d3450c8f59ca4623e0b2d4/FLAGa58045036 [2022-12-06 03:36:06,835 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11bbbca2/e2c5c3df11d3450c8f59ca4623e0b2d4 [2022-12-06 03:36:06,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 03:36:06,839 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 03:36:06,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 03:36:06,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 03:36:06,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 03:36:06,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:36:06" (1/1) ... [2022-12-06 03:36:06,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b4e2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:06, skipping insertion in model container [2022-12-06 03:36:06,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:36:06" (1/1) ... [2022-12-06 03:36:06,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 03:36:06,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 03:36:07,008 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-06 03:36:07,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 03:36:07,028 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 03:36:07,059 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-06 03:36:07,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 03:36:07,075 INFO L208 MainTranslator]: Completed translation [2022-12-06 03:36:07,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07 WrapperNode [2022-12-06 03:36:07,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 03:36:07,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 03:36:07,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 03:36:07,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 03:36:07,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,120 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 204 [2022-12-06 03:36:07,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 03:36:07,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 03:36:07,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 03:36:07,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 03:36:07,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 03:36:07,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 03:36:07,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 03:36:07,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 03:36:07,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (1/1) ... [2022-12-06 03:36:07,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 03:36:07,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 03:36:07,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 03:36:07,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 03:36:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 03:36:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 03:36:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 03:36:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 03:36:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 03:36:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 03:36:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 03:36:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 03:36:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 03:36:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 03:36:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 03:36:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 03:36:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 03:36:07,245 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 03:36:07,365 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 03:36:07,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 03:36:07,717 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 03:36:07,725 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 03:36:07,726 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 03:36:07,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:36:07 BoogieIcfgContainer [2022-12-06 03:36:07,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 03:36:07,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 03:36:07,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 03:36:07,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 03:36:07,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 03:36:06" (1/3) ... [2022-12-06 03:36:07,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf21ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 03:36:07, skipping insertion in model container [2022-12-06 03:36:07,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:36:07" (2/3) ... [2022-12-06 03:36:07,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf21ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 03:36:07, skipping insertion in model container [2022-12-06 03:36:07,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:36:07" (3/3) ... [2022-12-06 03:36:07,736 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2022-12-06 03:36:07,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 03:36:07,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 03:36:07,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 03:36:07,845 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 03:36:07,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 247 transitions, 510 flow [2022-12-06 03:36:07,966 INFO L130 PetriNetUnfolder]: 24/245 cut-off events. [2022-12-06 03:36:07,966 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 03:36:07,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 245 events. 24/245 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 480 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2022-12-06 03:36:07,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 247 transitions, 510 flow [2022-12-06 03:36:07,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 237 transitions, 486 flow [2022-12-06 03:36:07,980 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:07,999 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 237 transitions, 486 flow [2022-12-06 03:36:08,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 237 transitions, 486 flow [2022-12-06 03:36:08,036 INFO L130 PetriNetUnfolder]: 24/237 cut-off events. [2022-12-06 03:36:08,036 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 03:36:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 24/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 460 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2022-12-06 03:36:08,043 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 237 transitions, 486 flow [2022-12-06 03:36:08,043 INFO L188 LiptonReduction]: Number of co-enabled transitions 6892 [2022-12-06 03:36:28,779 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 199 DAG size of output: 197 (called from [L 287] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-06 03:36:34,204 INFO L203 LiptonReduction]: Total number of compositions: 216 [2022-12-06 03:36:34,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 03:36:34,226 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=REPEATED_LIPTON_PN, 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;@402b7d26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 03:36:34,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 03:36:34,229 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2022-12-06 03:36:34,230 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 03:36:34,230 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:34,230 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:34,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1113317458, now seen corresponding path program 1 times [2022-12-06 03:36:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:34,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903522986] [2022-12-06 03:36:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:34,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:34,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:34,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903522986] [2022-12-06 03:36:34,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903522986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:34,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 03:36:34,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 03:36:34,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431043470] [2022-12-06 03:36:34,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 03:36:34,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 03:36:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 03:36:34,599 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-06 03:36:34,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:34,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:34,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-06 03:36:34,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:34,660 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2022-12-06 03:36:34,660 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-06 03:36:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2022-12-06 03:36:34,662 INFO L137 encePairwiseOnDemand]: 14/17 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2022-12-06 03:36:34,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2022-12-06 03:36:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 03:36:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 03:36:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2022-12-06 03:36:34,669 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2022-12-06 03:36:34,672 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2022-12-06 03:36:34,673 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:34,673 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 18 transitions, 80 flow [2022-12-06 03:36:34,680 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 18 transitions, 80 flow [2022-12-06 03:36:34,680 INFO L188 LiptonReduction]: Number of co-enabled transitions 22 [2022-12-06 03:36:35,463 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 03:36:35,465 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 793 [2022-12-06 03:36:35,465 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 76 flow [2022-12-06 03:36:35,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:35,465 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:35,465 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:35,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 03:36:35,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash 139568478, now seen corresponding path program 1 times [2022-12-06 03:36:35,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:35,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119669995] [2022-12-06 03:36:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:35,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:35,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119669995] [2022-12-06 03:36:35,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119669995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:35,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 03:36:35,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 03:36:35,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065531325] [2022-12-06 03:36:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:35,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 03:36:35,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 03:36:35,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 03:36:35,777 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-06 03:36:35,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:35,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:35,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-06 03:36:35,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:35,998 INFO L130 PetriNetUnfolder]: 72/134 cut-off events. [2022-12-06 03:36:35,998 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-06 03:36:35,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 134 events. 72/134 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 368 event pairs, 24 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 286. Up to 113 conditions per place. [2022-12-06 03:36:35,999 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 34 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2022-12-06 03:36:35,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 39 transitions, 253 flow [2022-12-06 03:36:36,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 03:36:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 03:36:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-12-06 03:36:36,000 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-12-06 03:36:36,001 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2022-12-06 03:36:36,001 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:36,001 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 39 transitions, 253 flow [2022-12-06 03:36:36,002 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 39 transitions, 253 flow [2022-12-06 03:36:36,003 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:36:36,003 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 03:36:36,005 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 4 [2022-12-06 03:36:36,006 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 39 transitions, 253 flow [2022-12-06 03:36:36,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:36,006 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:36,006 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:36,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 03:36:36,007 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 791731748, now seen corresponding path program 2 times [2022-12-06 03:36:36,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:36,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650594675] [2022-12-06 03:36:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:36,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650594675] [2022-12-06 03:36:36,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650594675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:36,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 03:36:36,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 03:36:36,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883457039] [2022-12-06 03:36:36,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:36,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 03:36:36,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 03:36:36,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 03:36:36,257 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-06 03:36:36,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 39 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:36,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:36,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-06 03:36:36,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:36,377 INFO L130 PetriNetUnfolder]: 111/207 cut-off events. [2022-12-06 03:36:36,378 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-12-06 03:36:36,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 207 events. 111/207 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 669 event pairs, 24 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 592. Up to 182 conditions per place. [2022-12-06 03:36:36,383 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 63 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2022-12-06 03:36:36,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 75 transitions, 633 flow [2022-12-06 03:36:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 03:36:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 03:36:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2022-12-06 03:36:36,385 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4235294117647059 [2022-12-06 03:36:36,386 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2022-12-06 03:36:36,386 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:36,387 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 75 transitions, 633 flow [2022-12-06 03:36:36,388 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 75 transitions, 633 flow [2022-12-06 03:36:36,388 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:36:36,389 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 03:36:36,390 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 4 [2022-12-06 03:36:36,390 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 75 transitions, 633 flow [2022-12-06 03:36:36,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:36,390 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:36,390 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 03:36:36,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1071985620, now seen corresponding path program 3 times [2022-12-06 03:36:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:36,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575989910] [2022-12-06 03:36:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:36,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575989910] [2022-12-06 03:36:36,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575989910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:36,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 03:36:36,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 03:36:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590868188] [2022-12-06 03:36:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:36,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 03:36:36,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 03:36:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 03:36:36,682 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-06 03:36:36,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 75 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:36,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:36,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-06 03:36:36,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:36,904 INFO L130 PetriNetUnfolder]: 125/235 cut-off events. [2022-12-06 03:36:36,904 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-06 03:36:36,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 235 events. 125/235 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 828 event pairs, 24 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 833. Up to 210 conditions per place. [2022-12-06 03:36:36,906 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 76 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2022-12-06 03:36:36,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 92 transitions, 962 flow [2022-12-06 03:36:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 03:36:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 03:36:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-12-06 03:36:36,908 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2022-12-06 03:36:36,908 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2022-12-06 03:36:36,909 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:36,909 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 92 transitions, 962 flow [2022-12-06 03:36:36,911 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 92 transitions, 962 flow [2022-12-06 03:36:36,911 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:36:36,912 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 03:36:36,912 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 4 [2022-12-06 03:36:36,912 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 92 transitions, 962 flow [2022-12-06 03:36:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:36,913 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:36,913 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 03:36:36,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:36,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1932013350, now seen corresponding path program 4 times [2022-12-06 03:36:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100804308] [2022-12-06 03:36:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:37,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:37,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100804308] [2022-12-06 03:36:37,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100804308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:37,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 03:36:37,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 03:36:37,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717927235] [2022-12-06 03:36:37,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:37,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 03:36:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 03:36:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 03:36:37,072 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-06 03:36:37,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 92 transitions, 962 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:37,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:37,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-06 03:36:37,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:37,192 INFO L130 PetriNetUnfolder]: 122/226 cut-off events. [2022-12-06 03:36:37,192 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-06 03:36:37,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 226 events. 122/226 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 754 event pairs, 24 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 984. Up to 201 conditions per place. [2022-12-06 03:36:37,194 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 70 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2022-12-06 03:36:37,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 86 transitions, 1068 flow [2022-12-06 03:36:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 03:36:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 03:36:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-12-06 03:36:37,195 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2022-12-06 03:36:37,196 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2022-12-06 03:36:37,196 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:37,196 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 86 transitions, 1068 flow [2022-12-06 03:36:37,198 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 86 transitions, 1068 flow [2022-12-06 03:36:37,198 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:36:37,198 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 03:36:37,199 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3 [2022-12-06 03:36:37,199 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 86 transitions, 1068 flow [2022-12-06 03:36:37,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:37,199 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:37,199 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:37,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 03:36:37,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2001028378, now seen corresponding path program 5 times [2022-12-06 03:36:37,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:37,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064093981] [2022-12-06 03:36:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:37,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:37,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064093981] [2022-12-06 03:36:37,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064093981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:37,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 03:36:37,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 03:36:37,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398711284] [2022-12-06 03:36:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:37,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 03:36:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 03:36:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 03:36:37,310 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-06 03:36:37,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 86 transitions, 1068 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:37,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:37,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-06 03:36:37,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:37,423 INFO L130 PetriNetUnfolder]: 120/224 cut-off events. [2022-12-06 03:36:37,423 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-12-06 03:36:37,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 224 events. 120/224 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 757 event pairs, 24 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 1136. Up to 199 conditions per place. [2022-12-06 03:36:37,425 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 69 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2022-12-06 03:36:37,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 85 transitions, 1226 flow [2022-12-06 03:36:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 03:36:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 03:36:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-12-06 03:36:37,426 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2022-12-06 03:36:37,426 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 21 predicate places. [2022-12-06 03:36:37,427 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:37,427 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 85 transitions, 1226 flow [2022-12-06 03:36:37,429 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 85 transitions, 1226 flow [2022-12-06 03:36:37,429 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:36:37,429 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 03:36:37,429 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3 [2022-12-06 03:36:37,429 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 85 transitions, 1226 flow [2022-12-06 03:36:37,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:37,430 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:37,430 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:37,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 03:36:37,430 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1433911188, now seen corresponding path program 6 times [2022-12-06 03:36:37,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:37,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288302439] [2022-12-06 03:36:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:37,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:37,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288302439] [2022-12-06 03:36:37,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288302439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:37,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 03:36:37,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 03:36:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334155548] [2022-12-06 03:36:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 03:36:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 03:36:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 03:36:37,602 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-06 03:36:37,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 85 transitions, 1226 flow. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:37,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:37,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-06 03:36:37,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:37,787 INFO L130 PetriNetUnfolder]: 117/215 cut-off events. [2022-12-06 03:36:37,787 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-12-06 03:36:37,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 215 events. 117/215 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 697 event pairs, 24 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 1276. Up to 190 conditions per place. [2022-12-06 03:36:37,789 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 64 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2022-12-06 03:36:37,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 1294 flow [2022-12-06 03:36:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 03:36:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 03:36:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2022-12-06 03:36:37,792 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2022-12-06 03:36:37,792 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2022-12-06 03:36:37,794 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:37,794 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 79 transitions, 1294 flow [2022-12-06 03:36:37,796 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 79 transitions, 1294 flow [2022-12-06 03:36:37,796 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:36:37,796 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 03:36:37,797 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 5 [2022-12-06 03:36:37,797 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 79 transitions, 1294 flow [2022-12-06 03:36:37,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:37,797 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:37,797 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:37,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 03:36:37,797 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 835730506, now seen corresponding path program 1 times [2022-12-06 03:36:37,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:37,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29169496] [2022-12-06 03:36:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:37,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:37,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29169496] [2022-12-06 03:36:37,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29169496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 03:36:37,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529555264] [2022-12-06 03:36:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:37,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 03:36:37,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 03:36:37,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 03:36:37,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 03:36:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:38,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-06 03:36:38,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 03:36:38,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-06 03:36:38,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 03:36:38,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 03:36:38,973 INFO L321 Elim1Store]: treesize reduction 325, result has 17.3 percent of original size [2022-12-06 03:36:38,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 721 treesize of output 439 [2022-12-06 03:36:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:40,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 03:36:40,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529555264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 03:36:40,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 03:36:40,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-06 03:36:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697507059] [2022-12-06 03:36:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 03:36:40,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 03:36:40,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 03:36:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-06 03:36:40,064 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-06 03:36:40,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 79 transitions, 1294 flow. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:40,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:40,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-06 03:36:40,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:36:40,734 INFO L130 PetriNetUnfolder]: 205/375 cut-off events. [2022-12-06 03:36:40,734 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-12-06 03:36:40,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3338 conditions, 375 events. 205/375 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1481 event pairs, 14 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 1882. Up to 330 conditions per place. [2022-12-06 03:36:40,737 INFO L137 encePairwiseOnDemand]: 10/17 looper letters, 86 selfloop transitions, 24 changer transitions 42/158 dead transitions. [2022-12-06 03:36:40,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 158 transitions, 2904 flow [2022-12-06 03:36:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 03:36:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 03:36:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 61 transitions. [2022-12-06 03:36:40,738 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2022-12-06 03:36:40,738 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 31 predicate places. [2022-12-06 03:36:40,739 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:36:40,739 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 158 transitions, 2904 flow [2022-12-06 03:36:40,742 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 158 transitions, 2904 flow [2022-12-06 03:36:40,742 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:36:42,369 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 03:36:42,371 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1632 [2022-12-06 03:36:42,371 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 157 transitions, 2886 flow [2022-12-06 03:36:42,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:42,371 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:36:42,371 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:36:42,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 03:36:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 03:36:42,582 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:36:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:36:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash -194859609, now seen corresponding path program 1 times [2022-12-06 03:36:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:36:42,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325651936] [2022-12-06 03:36:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:42,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:36:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:36:42,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325651936] [2022-12-06 03:36:42,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325651936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 03:36:42,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372055625] [2022-12-06 03:36:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:36:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 03:36:42,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 03:36:42,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 03:36:42,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 03:36:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:36:42,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-06 03:36:42,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 03:36:42,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-06 03:36:42,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 03:36:42,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 03:36:43,221 INFO L321 Elim1Store]: treesize reduction 57, result has 14.9 percent of original size [2022-12-06 03:36:43,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 340 treesize of output 323 [2022-12-06 03:36:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:44,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 03:36:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:36:53,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372055625] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 03:36:53,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 03:36:53,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-06 03:36:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513943020] [2022-12-06 03:36:53,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 03:36:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 03:36:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 03:36:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 03:36:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=238, Unknown=4, NotChecked=0, Total=306 [2022-12-06 03:36:53,691 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 18 [2022-12-06 03:36:53,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 157 transitions, 2886 flow. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:36:53,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 03:36:53,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 18 [2022-12-06 03:36:53,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 03:37:04,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 03:37:34,433 WARN L233 SmtUtils]: Spent 29.41s on a formula simplification. DAG size of input: 108 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 03:37:43,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-06 03:37:45,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-06 03:38:10,481 WARN L233 SmtUtils]: Spent 22.77s on a formula simplification. DAG size of input: 109 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 03:38:12,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 03:38:15,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-06 03:38:17,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-06 03:38:21,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-06 03:38:23,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-06 03:38:24,804 INFO L130 PetriNetUnfolder]: 641/1230 cut-off events. [2022-12-06 03:38:24,804 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2022-12-06 03:38:24,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12287 conditions, 1230 events. 641/1230 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7038 event pairs, 22 based on Foata normal form. 7/905 useless extension candidates. Maximal degree in co-relation 6640. Up to 1135 conditions per place. [2022-12-06 03:38:24,856 INFO L137 encePairwiseOnDemand]: 8/18 looper letters, 246 selfloop transitions, 81 changer transitions 189/516 dead transitions. [2022-12-06 03:38:24,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 516 transitions, 10553 flow [2022-12-06 03:38:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-06 03:38:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-12-06 03:38:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 255 transitions. [2022-12-06 03:38:24,858 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2022-12-06 03:38:24,859 INFO L294 CegarLoopForPetriNet]: 21 programPoint places, 62 predicate places. [2022-12-06 03:38:24,859 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 03:38:24,859 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 516 transitions, 10553 flow [2022-12-06 03:38:24,869 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 516 transitions, 10553 flow [2022-12-06 03:38:24,869 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 03:38:24,870 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 03:38:24,870 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 11 [2022-12-06 03:38:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 516 transitions, 10553 flow [2022-12-06 03:38:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 03:38:24,871 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 03:38:24,871 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 03:38:24,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 03:38:25,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-06 03:38:25,071 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 03:38:25,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 03:38:25,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1822011367, now seen corresponding path program 2 times [2022-12-06 03:38:25,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 03:38:25,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515742531] [2022-12-06 03:38:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 03:38:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 03:38:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 03:38:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:38:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 03:38:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515742531] [2022-12-06 03:38:25,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515742531] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 03:38:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672413585] [2022-12-06 03:38:25,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 03:38:25,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 03:38:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 03:38:25,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 03:38:25,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 03:38:25,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 03:38:25,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 03:38:25,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-06 03:38:25,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 03:38:25,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-06 03:38:25,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 03:38:25,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 03:38:25,644 INFO L321 Elim1Store]: treesize reduction 57, result has 14.9 percent of original size [2022-12-06 03:38:25,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 340 treesize of output 323 [2022-12-06 03:38:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 03:38:26,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-12-06 03:50:37,738 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 03:50:37,738 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 03:50:38,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 03:50:38,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown