/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:10:02,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:10:02,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:10:02,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:10:02,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:10:02,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:10:02,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:10:02,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:10:02,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:10:02,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:10:02,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:10:02,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:10:02,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:10:02,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:10:02,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:10:02,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:10:02,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:10:02,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:10:02,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:10:02,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:10:02,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:10:02,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:10:02,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:10:02,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:10:02,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:10:02,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:10:02,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:10:02,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:10:02,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:10:02,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:10:02,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:10:02,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:10:02,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:10:02,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:10:02,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:10:02,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:10:02,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:10:02,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:10:02,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:10:02,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:10:02,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:10:02,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:10:02,249 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:10:02,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:10:02,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:10:02,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:10:02,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:10:02,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:10:02,251 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:10:02,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:10:02,251 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:10:02,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:10:02,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:10:02,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:10:02,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:10:02,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:10:02,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:10:02,252 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:10:02,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:10:02,253 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:10:02,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:10:02,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:10:02,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:10:02,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:10:02,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:10:02,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:10:02,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:10:02,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:10:02,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:10:02,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:10:02,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:10:02,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:10:02,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:10:02,255 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:10:02,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:10:02,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:10:02,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:10:02,490 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:10:02,492 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:10:02,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-01-28 09:10:03,633 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:10:03,790 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:10:03,790 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-01-28 09:10:03,796 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9fa7142c/5f702526b4be466788561390f546903c/FLAG566049b89 [2023-01-28 09:10:03,809 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9fa7142c/5f702526b4be466788561390f546903c [2023-01-28 09:10:03,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:10:03,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:10:03,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:10:03,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:10:03,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:10:03,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:10:03" (1/1) ... [2023-01-28 09:10:03,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272f0695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:03, skipping insertion in model container [2023-01-28 09:10:03,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:10:03" (1/1) ... [2023-01-28 09:10:03,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:10:03,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:10:04,054 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-01-28 09:10:04,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:10:04,069 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:10:04,113 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-01-28 09:10:04,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:10:04,128 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:10:04,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04 WrapperNode [2023-01-28 09:10:04,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:10:04,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:10:04,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:10:04,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:10:04,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,179 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 406 [2023-01-28 09:10:04,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:10:04,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:10:04,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:10:04,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:10:04,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:10:04,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:10:04,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:10:04,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:10:04,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (1/1) ... [2023-01-28 09:10:04,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:10:04,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:10:04,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:10:04,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:10:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:10:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:10:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:10:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:10:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:10:04,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:10:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:10:04,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:10:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:10:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:10:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:10:04,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:10:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:10:04,277 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:10:04,402 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:10:04,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:10:04,930 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:10:04,943 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:10:04,943 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 09:10:04,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:10:04 BoogieIcfgContainer [2023-01-28 09:10:04,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:10:04,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:10:04,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:10:04,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:10:04,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:10:03" (1/3) ... [2023-01-28 09:10:04,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caff807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:10:04, skipping insertion in model container [2023-01-28 09:10:04,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:10:04" (2/3) ... [2023-01-28 09:10:04,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caff807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:10:04, skipping insertion in model container [2023-01-28 09:10:04,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:10:04" (3/3) ... [2023-01-28 09:10:04,953 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-01-28 09:10:04,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:10:04,972 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:10:04,972 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:10:05,112 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:10:05,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 485 transitions, 986 flow [2023-01-28 09:10:05,292 INFO L130 PetriNetUnfolder]: 49/483 cut-off events. [2023-01-28 09:10:05,292 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:10:05,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 483 events. 49/483 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1351 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-01-28 09:10:05,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 485 transitions, 986 flow [2023-01-28 09:10:05,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 433 places, 475 transitions, 962 flow [2023-01-28 09:10:05,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:10:05,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 433 places, 475 transitions, 962 flow [2023-01-28 09:10:05,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 433 places, 475 transitions, 962 flow [2023-01-28 09:10:05,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 475 transitions, 962 flow [2023-01-28 09:10:05,429 INFO L130 PetriNetUnfolder]: 49/475 cut-off events. [2023-01-28 09:10:05,430 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:10:05,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 475 events. 49/475 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1318 event pairs, 0 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-01-28 09:10:05,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 53352 [2023-01-28 09:10:24,125 INFO L134 LiptonReduction]: Checked pairs total: 50280 [2023-01-28 09:10:24,125 INFO L136 LiptonReduction]: Total number of compositions: 621 [2023-01-28 09:10:24,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:10:24,144 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@405db3f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:10:24,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:10:24,150 INFO L130 PetriNetUnfolder]: 7/28 cut-off events. [2023-01-28 09:10:24,151 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:10:24,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:24,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:24,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:24,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash -36243124, now seen corresponding path program 1 times [2023-01-28 09:10:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634374988] [2023-01-28 09:10:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:10:24,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634374988] [2023-01-28 09:10:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634374988] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:24,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:10:24,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306909286] [2023-01-28 09:10:24,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:24,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:10:24,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:10:24,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:10:24,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1106 [2023-01-28 09:10:24,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:24,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:24,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1106 [2023-01-28 09:10:24,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:24,747 INFO L130 PetriNetUnfolder]: 157/250 cut-off events. [2023-01-28 09:10:24,748 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 09:10:24,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 157/250 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 638 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 472. Up to 249 conditions per place. [2023-01-28 09:10:24,750 INFO L137 encePairwiseOnDemand]: 1101/1106 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-01-28 09:10:24,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2023-01-28 09:10:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:10:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:10:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-01-28 09:10:24,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40325497287522605 [2023-01-28 09:10:24,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-01-28 09:10:24,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-01-28 09:10:24,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:24,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-01-28 09:10:24,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:24,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:24,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:24,799 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 1338 transitions. [2023-01-28 09:10:24,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2023-01-28 09:10:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:10:24,804 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2023-01-28 09:10:24,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=31} [2023-01-28 09:10:24,811 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-01-28 09:10:24,811 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2023-01-28 09:10:24,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:24,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:24,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:24,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:10:24,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:24,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:24,821 INFO L85 PathProgramCache]: Analyzing trace with hash -119955902, now seen corresponding path program 1 times [2023-01-28 09:10:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:24,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525194337] [2023-01-28 09:10:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:24,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:10:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525194337] [2023-01-28 09:10:25,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525194337] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:10:25,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840170171] [2023-01-28 09:10:25,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:25,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:25,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:10:25,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:10:25,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:10:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:25,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 09:10:25,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:10:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:10:25,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:10:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:10:25,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840170171] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:10:25,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:10:25,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-28 09:10:25,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638756381] [2023-01-28 09:10:25,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:10:25,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:10:25,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:25,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:10:25,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:10:25,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1106 [2023-01-28 09:10:25,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 437.875) internal successors, (3503), 8 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:25,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:25,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1106 [2023-01-28 09:10:25,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:25,488 INFO L130 PetriNetUnfolder]: 157/256 cut-off events. [2023-01-28 09:10:25,489 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:10:25,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 256 events. 157/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 642 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 512. Up to 249 conditions per place. [2023-01-28 09:10:25,490 INFO L137 encePairwiseOnDemand]: 1101/1106 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-01-28 09:10:25,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2023-01-28 09:10:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:10:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:10:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2653 transitions. [2023-01-28 09:10:25,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399789029535865 [2023-01-28 09:10:25,497 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2653 transitions. [2023-01-28 09:10:25,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2653 transitions. [2023-01-28 09:10:25,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:25,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2653 transitions. [2023-01-28 09:10:25,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 442.1666666666667) internal successors, (2653), 6 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:25,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1106.0) internal successors, (7742), 7 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:25,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1106.0) internal successors, (7742), 7 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:25,515 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 2653 transitions. [2023-01-28 09:10:25,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2023-01-28 09:10:25,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:10:25,517 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2023-01-28 09:10:25,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2023-01-28 09:10:25,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-01-28 09:10:25,518 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2023-01-28 09:10:25,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 437.875) internal successors, (3503), 8 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:25,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:25,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:25,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 09:10:25,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:25,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:25,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1905448366, now seen corresponding path program 2 times [2023-01-28 09:10:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:25,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375341044] [2023-01-28 09:10:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:25,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 09:10:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:25,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375341044] [2023-01-28 09:10:25,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375341044] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:10:25,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391231788] [2023-01-28 09:10:25,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:10:25,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:10:25,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:10:25,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:10:26,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:10:26,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:10:26,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 09:10:26,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:10:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 09:10:26,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:10:26,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391231788] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:26,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:10:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-28 09:10:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711833795] [2023-01-28 09:10:26,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:26,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:10:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:10:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:10:26,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1106 [2023-01-28 09:10:26,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:26,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:26,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1106 [2023-01-28 09:10:26,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:26,993 INFO L130 PetriNetUnfolder]: 165/285 cut-off events. [2023-01-28 09:10:26,993 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 09:10:26,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 285 events. 165/285 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 853 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 249 conditions per place. [2023-01-28 09:10:26,996 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2023-01-28 09:10:26,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2023-01-28 09:10:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:10:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:10:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1709 transitions. [2023-01-28 09:10:27,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3863019891500904 [2023-01-28 09:10:27,001 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1709 transitions. [2023-01-28 09:10:27,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1709 transitions. [2023-01-28 09:10:27,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:27,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1709 transitions. [2023-01-28 09:10:27,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 427.25) internal successors, (1709), 4 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:27,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:27,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:27,014 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 1709 transitions. [2023-01-28 09:10:27,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2023-01-28 09:10:27,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 09:10:27,017 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2023-01-28 09:10:27,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-01-28 09:10:27,019 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-01-28 09:10:27,019 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 139 flow [2023-01-28 09:10:27,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:27,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:27,020 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:27,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 09:10:27,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 09:10:27,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:27,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1267452706, now seen corresponding path program 3 times [2023-01-28 09:10:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:27,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347554615] [2023-01-28 09:10:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 09:10:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347554615] [2023-01-28 09:10:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347554615] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:10:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110091235] [2023-01-28 09:10:27,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:10:27,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:10:27,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:10:27,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:10:27,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:10:27,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:10:27,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 09:10:27,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:10:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 09:10:27,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:10:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110091235] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:27,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:10:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-01-28 09:10:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442866680] [2023-01-28 09:10:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:27,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:10:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:10:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:10:27,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1106 [2023-01-28 09:10:27,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:27,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:27,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1106 [2023-01-28 09:10:27,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:28,241 INFO L130 PetriNetUnfolder]: 173/317 cut-off events. [2023-01-28 09:10:28,241 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-01-28 09:10:28,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 317 events. 173/317 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1087 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 720. Up to 256 conditions per place. [2023-01-28 09:10:28,243 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2023-01-28 09:10:28,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2023-01-28 09:10:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:10:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:10:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1715 transitions. [2023-01-28 09:10:28,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3876582278481013 [2023-01-28 09:10:28,248 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1715 transitions. [2023-01-28 09:10:28,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1715 transitions. [2023-01-28 09:10:28,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:28,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1715 transitions. [2023-01-28 09:10:28,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 428.75) internal successors, (1715), 4 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:28,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:28,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:28,260 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 139 flow. Second operand 4 states and 1715 transitions. [2023-01-28 09:10:28,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2023-01-28 09:10:28,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 09:10:28,263 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2023-01-28 09:10:28,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-01-28 09:10:28,263 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-01-28 09:10:28,264 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 145 flow [2023-01-28 09:10:28,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:28,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:28,265 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:28,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 09:10:28,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:28,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:28,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 620058531, now seen corresponding path program 1 times [2023-01-28 09:10:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:28,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515035697] [2023-01-28 09:10:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 09:10:28,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515035697] [2023-01-28 09:10:28,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515035697] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:10:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001769809] [2023-01-28 09:10:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:28,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:10:28,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:10:28,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:10:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:28,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 09:10:28,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:10:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 09:10:28,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:10:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 09:10:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001769809] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:10:28,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:10:28,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 09:10:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728087746] [2023-01-28 09:10:28,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:10:28,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:10:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:10:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:10:28,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1106 [2023-01-28 09:10:28,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 145 flow. Second operand has 13 states, 13 states have (on average 437.0769230769231) internal successors, (5682), 13 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:28,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:28,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1106 [2023-01-28 09:10:28,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:29,000 INFO L130 PetriNetUnfolder]: 172/313 cut-off events. [2023-01-28 09:10:29,001 INFO L131 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2023-01-28 09:10:29,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 313 events. 172/313 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1002 event pairs, 124 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 752. Up to 304 conditions per place. [2023-01-28 09:10:29,003 INFO L137 encePairwiseOnDemand]: 1101/1106 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2023-01-28 09:10:29,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 235 flow [2023-01-28 09:10:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:10:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:10:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3086 transitions. [2023-01-28 09:10:29,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39860501162490314 [2023-01-28 09:10:29,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3086 transitions. [2023-01-28 09:10:29,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3086 transitions. [2023-01-28 09:10:29,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:29,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3086 transitions. [2023-01-28 09:10:29,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 440.85714285714283) internal successors, (3086), 7 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1106.0) internal successors, (8848), 8 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1106.0) internal successors, (8848), 8 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,030 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 145 flow. Second operand 7 states and 3086 transitions. [2023-01-28 09:10:29,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 235 flow [2023-01-28 09:10:29,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:10:29,033 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 188 flow [2023-01-28 09:10:29,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-28 09:10:29,034 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-01-28 09:10:29,034 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 188 flow [2023-01-28 09:10:29,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 437.0769230769231) internal successors, (5682), 13 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:29,036 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:29,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 09:10:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:29,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:29,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash -856671419, now seen corresponding path program 2 times [2023-01-28 09:10:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748987076] [2023-01-28 09:10:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 09:10:29,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748987076] [2023-01-28 09:10:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748987076] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:29,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:10:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028190831] [2023-01-28 09:10:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:29,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:10:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:10:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:10:29,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1106 [2023-01-28 09:10:29,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:29,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1106 [2023-01-28 09:10:29,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:29,599 INFO L130 PetriNetUnfolder]: 211/378 cut-off events. [2023-01-28 09:10:29,599 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-28 09:10:29,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 378 events. 211/378 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1308 event pairs, 124 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 846. Up to 318 conditions per place. [2023-01-28 09:10:29,601 INFO L137 encePairwiseOnDemand]: 1103/1106 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-01-28 09:10:29,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 337 flow [2023-01-28 09:10:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:10:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:10:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1324 transitions. [2023-01-28 09:10:29,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990355635925256 [2023-01-28 09:10:29,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1324 transitions. [2023-01-28 09:10:29,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1324 transitions. [2023-01-28 09:10:29,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:29,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1324 transitions. [2023-01-28 09:10:29,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 441.3333333333333) internal successors, (1324), 3 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,612 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 188 flow. Second operand 3 states and 1324 transitions. [2023-01-28 09:10:29,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 337 flow [2023-01-28 09:10:29,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 09:10:29,617 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 176 flow [2023-01-28 09:10:29,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-01-28 09:10:29,619 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-01-28 09:10:29,619 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 176 flow [2023-01-28 09:10:29,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:29,620 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:29,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:10:29,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:29,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash -260660010, now seen corresponding path program 1 times [2023-01-28 09:10:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852401079] [2023-01-28 09:10:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 09:10:29,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:29,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852401079] [2023-01-28 09:10:29,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852401079] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:29,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:29,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:10:29,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917351487] [2023-01-28 09:10:29,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:29,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:10:29,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:10:29,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:10:29,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1106 [2023-01-28 09:10:29,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:29,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1106 [2023-01-28 09:10:29,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:29,982 INFO L130 PetriNetUnfolder]: 325/564 cut-off events. [2023-01-28 09:10:29,982 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2023-01-28 09:10:29,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 564 events. 325/564 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2003 event pairs, 167 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 1446. Up to 393 conditions per place. [2023-01-28 09:10:29,985 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-28 09:10:29,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 333 flow [2023-01-28 09:10:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:10:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:10:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1322 transitions. [2023-01-28 09:10:29,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39843279083785416 [2023-01-28 09:10:29,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1322 transitions. [2023-01-28 09:10:29,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1322 transitions. [2023-01-28 09:10:29,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:29,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1322 transitions. [2023-01-28 09:10:29,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.6666666666667) internal successors, (1322), 3 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:29,996 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 176 flow. Second operand 3 states and 1322 transitions. [2023-01-28 09:10:29,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 333 flow [2023-01-28 09:10:29,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 325 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 09:10:29,999 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 191 flow [2023-01-28 09:10:29,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-01-28 09:10:30,000 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-01-28 09:10:30,001 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 191 flow [2023-01-28 09:10:30,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:30,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:30,001 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:30,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:10:30,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:30,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash -574296751, now seen corresponding path program 1 times [2023-01-28 09:10:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:30,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438076832] [2023-01-28 09:10:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-01-28 09:10:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438076832] [2023-01-28 09:10:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438076832] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:10:30,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:10:30,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:10:30,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129458724] [2023-01-28 09:10:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:10:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:10:30,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:10:30,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:10:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:10:30,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 1106 [2023-01-28 09:10:30,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:30,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:10:30,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 1106 [2023-01-28 09:10:30,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:10:30,680 INFO L130 PetriNetUnfolder]: 259/450 cut-off events. [2023-01-28 09:10:30,680 INFO L131 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2023-01-28 09:10:30,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 450 events. 259/450 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1415 event pairs, 94 based on Foata normal form. 38/434 useless extension candidates. Maximal degree in co-relation 1138. Up to 419 conditions per place. [2023-01-28 09:10:30,683 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 43 selfloop transitions, 2 changer transitions 4/49 dead transitions. [2023-01-28 09:10:30,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 314 flow [2023-01-28 09:10:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:10:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:10:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1355 transitions. [2023-01-28 09:10:30,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40837854128993367 [2023-01-28 09:10:30,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1355 transitions. [2023-01-28 09:10:30,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1355 transitions. [2023-01-28 09:10:30,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:10:30,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1355 transitions. [2023-01-28 09:10:30,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.6666666666667) internal successors, (1355), 3 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:30,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:30,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:30,696 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 191 flow. Second operand 3 states and 1355 transitions. [2023-01-28 09:10:30,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 314 flow [2023-01-28 09:10:30,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:10:30,698 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 198 flow [2023-01-28 09:10:30,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-01-28 09:10:30,701 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-01-28 09:10:30,701 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 198 flow [2023-01-28 09:10:30,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:10:30,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:10:30,701 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:10:30,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:10:30,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:10:30,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:10:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash 736481309, now seen corresponding path program 1 times [2023-01-28 09:10:30,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:10:30,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434009772] [2023-01-28 09:10:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:30,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:10:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 09:10:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:10:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434009772] [2023-01-28 09:10:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434009772] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:10:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789365373] [2023-01-28 09:10:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:10:34,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:10:34,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:10:34,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:10:34,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:10:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:10:34,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 09:10:34,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:10:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 09:10:36,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:11:47,333 WARN L222 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 93 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 09:11:52,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:11:52,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 364 treesize of output 2174 Received shutdown request... [2023-01-28 09:23:49,306 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:23:49,306 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:23:49,308 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 09:23:49,310 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:23:49,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:23:49,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:23:49,511 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 14ms.. [2023-01-28 09:23:49,512 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:23:49,512 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:23:49,513 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-01-28 09:23:49,515 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:23:49,515 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:23:49,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:23:49 BasicIcfg [2023-01-28 09:23:49,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:23:49,518 INFO L158 Benchmark]: Toolchain (without parser) took 825705.11ms. Allocated memory was 480.2MB in the beginning and 1.1GB in the end (delta: 608.2MB). Free memory was 432.2MB in the beginning and 668.8MB in the end (delta: -236.6MB). Peak memory consumption was 669.1MB. Max. memory is 16.0GB. [2023-01-28 09:23:49,518 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 343.9MB. Free memory is still 292.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:23:49,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.81ms. Allocated memory is still 480.2MB. Free memory was 431.8MB in the beginning and 418.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 09:23:49,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.83ms. Allocated memory is still 480.2MB. Free memory was 418.7MB in the beginning and 415.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 09:23:49,518 INFO L158 Benchmark]: Boogie Preprocessor took 34.91ms. Allocated memory is still 480.2MB. Free memory was 415.5MB in the beginning and 413.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:23:49,519 INFO L158 Benchmark]: RCFGBuilder took 730.01ms. Allocated memory is still 480.2MB. Free memory was 412.6MB in the beginning and 379.8MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-01-28 09:23:49,519 INFO L158 Benchmark]: TraceAbstraction took 824569.82ms. Allocated memory was 480.2MB in the beginning and 1.1GB in the end (delta: 608.2MB). Free memory was 379.1MB in the beginning and 668.8MB in the end (delta: -289.7MB). Peak memory consumption was 616.7MB. Max. memory is 16.0GB. [2023-01-28 09:23:49,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 343.9MB. Free memory is still 292.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 315.81ms. Allocated memory is still 480.2MB. Free memory was 431.8MB in the beginning and 418.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.83ms. Allocated memory is still 480.2MB. Free memory was 418.7MB in the beginning and 415.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.91ms. Allocated memory is still 480.2MB. Free memory was 415.5MB in the beginning and 413.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 730.01ms. Allocated memory is still 480.2MB. Free memory was 412.6MB in the beginning and 379.8MB in the end (delta: 32.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 824569.82ms. Allocated memory was 480.2MB in the beginning and 1.1GB in the end (delta: 608.2MB). Free memory was 379.1MB in the beginning and 668.8MB in the end (delta: -289.7MB). Peak memory consumption was 616.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.8s, 433 PlacesBefore, 29 PlacesAfterwards, 475 TransitionsBefore, 29 TransitionsAfterwards, 53352 CoEnabledTransitionPairs, 9 FixpointIterations, 138 TrivialSequentialCompositions, 287 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 129 ConcurrentYvCompositions, 42 ChoiceCompositions, 621 TotalNumberOfCompositions, 50280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48288, independent: 48169, independent conditional: 0, independent unconditional: 48169, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 32707, independent: 32685, independent conditional: 0, independent unconditional: 32685, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48288, independent: 15484, independent conditional: 0, independent unconditional: 15484, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 32707, unknown conditional: 0, unknown unconditional: 32707] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 14ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 14ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 14ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 713 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 824.4s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 689 IncrementalHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 0 mSDtfsCounter, 689 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 244 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 267 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 46 NumberOfNonLiveVariables, 776 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 184/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown