/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:23:02,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:23:02,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:23:02,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:23:02,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:23:02,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:23:02,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:23:02,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:23:02,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:23:02,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:23:02,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:23:02,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:23:02,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:23:02,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:23:02,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:23:02,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:23:02,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:23:02,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:23:02,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:23:02,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:23:02,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:23:02,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:23:02,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:23:02,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:23:02,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 23:23:02,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 23:23:02,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 23:23:02,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 23:23:02,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 23:23:02,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 23:23:02,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:23:02,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:23:02,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:23:02,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:23:02,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:23:02,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:23:02,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:23:02,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:23:02,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:23:02,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:23:02,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:23:02,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:23:02,358 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:23:02,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:23:02,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:23:02,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:23:02,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:23:02,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:23:02,360 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:23:02,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:23:02,360 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:23:02,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:23:02,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:23:02,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:23:02,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:23:02,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:23:02,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:23:02,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:23:02,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:23:02,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:23:02,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:23:02,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:23:02,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:23:02,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:23:02,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:23:02,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:23:02,364 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 23:23:02,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:23:02,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:23:02,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:23:02,626 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:23:02,626 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:23:02,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-01-27 23:23:03,733 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:23:03,935 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:23:03,935 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-01-27 23:23:03,941 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac091418d/c8e93682b76c4aa594e236c797977135/FLAG7ebc40de6 [2023-01-27 23:23:03,956 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac091418d/c8e93682b76c4aa594e236c797977135 [2023-01-27 23:23:03,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:23:03,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:23:03,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:23:03,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:23:03,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:23:03,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:23:03" (1/1) ... [2023-01-27 23:23:03,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac2b6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:03, skipping insertion in model container [2023-01-27 23:23:03,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:23:03" (1/1) ... [2023-01-27 23:23:03,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:23:03,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:23:04,119 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/unroll-cond-4.wvr.c[2808,2821] [2023-01-27 23:23:04,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:23:04,133 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:23:04,153 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/unroll-cond-4.wvr.c[2808,2821] [2023-01-27 23:23:04,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:23:04,166 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:23:04,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04 WrapperNode [2023-01-27 23:23:04,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:23:04,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:23:04,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:23:04,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:23:04,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,219 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 186 [2023-01-27 23:23:04,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:23:04,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:23:04,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:23:04,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:23:04,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:23:04,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:23:04,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:23:04,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:23:04,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (1/1) ... [2023-01-27 23:23:04,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:23:04,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:23:04,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:23:04,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:23:04,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:23:04,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:23:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:23:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:23:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 23:23:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:23:04,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:23:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:23:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:23:04,333 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:23:04,456 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:23:04,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:23:04,779 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:23:04,788 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:23:04,788 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 23:23:04,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:23:04 BoogieIcfgContainer [2023-01-27 23:23:04,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:23:04,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:23:04,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:23:04,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:23:04,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:23:03" (1/3) ... [2023-01-27 23:23:04,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708c8199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:23:04, skipping insertion in model container [2023-01-27 23:23:04,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:23:04" (2/3) ... [2023-01-27 23:23:04,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708c8199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:23:04, skipping insertion in model container [2023-01-27 23:23:04,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:23:04" (3/3) ... [2023-01-27 23:23:04,797 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2023-01-27 23:23:04,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:23:04,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:23:04,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:23:04,898 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:23:04,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 222 transitions, 460 flow [2023-01-27 23:23:05,027 INFO L130 PetriNetUnfolder]: 21/220 cut-off events. [2023-01-27 23:23:05,028 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:23:05,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 220 events. 21/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 376 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-01-27 23:23:05,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 222 transitions, 460 flow [2023-01-27 23:23:05,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 212 transitions, 436 flow [2023-01-27 23:23:05,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:23:05,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 212 transitions, 436 flow [2023-01-27 23:23:05,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 212 transitions, 436 flow [2023-01-27 23:23:05,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 212 transitions, 436 flow [2023-01-27 23:23:05,121 INFO L130 PetriNetUnfolder]: 21/212 cut-off events. [2023-01-27 23:23:05,121 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:23:05,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 21/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 357 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-01-27 23:23:05,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 5492 [2023-01-27 23:23:14,028 INFO L134 LiptonReduction]: Checked pairs total: 5306 [2023-01-27 23:23:14,029 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-01-27 23:23:14,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:23:14,047 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;@757c3bfd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:23:14,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:23:14,052 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-27 23:23:14,052 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:23:14,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:14,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:14,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:14,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash 23434036, now seen corresponding path program 1 times [2023-01-27 23:23:14,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:14,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593586917] [2023-01-27 23:23:14,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:14,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:23:14,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:14,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593586917] [2023-01-27 23:23:14,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593586917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:23:14,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:23:14,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:23:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403815045] [2023-01-27 23:23:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:23:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:23:14,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:23:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:23:14,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-01-27 23:23:14,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:14,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:14,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-01-27 23:23:14,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:14,583 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-27 23:23:14,583 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 23:23:14,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 201 event pairs, 19 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-27 23:23:14,585 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-27 23:23:14,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-27 23:23:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:23:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:23:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-01-27 23:23:14,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41316526610644255 [2023-01-27 23:23:14,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-01-27 23:23:14,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-01-27 23:23:14,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:14,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-01-27 23:23:14,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:14,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:14,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:14,614 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 590 transitions. [2023-01-27 23:23:14,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-27 23:23:14,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:23:14,618 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-27 23:23:14,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-27 23:23:14,622 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-27 23:23:14,623 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-27 23:23:14,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:14,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:14,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:14,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:23:14,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:14,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1325837020, now seen corresponding path program 1 times [2023-01-27 23:23:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:14,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259142763] [2023-01-27 23:23:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:14,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:14,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:14,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259142763] [2023-01-27 23:23:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259142763] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:23:14,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:23:14,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:23:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366275553] [2023-01-27 23:23:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:23:14,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:23:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:14,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:23:14,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:23:14,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-27 23:23:14,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:14,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:14,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-27 23:23:14,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:15,551 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-01-27 23:23:15,552 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:23:15,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 369 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-01-27 23:23:15,553 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-01-27 23:23:15,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-01-27 23:23:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:23:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:23:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 900 transitions. [2023-01-27 23:23:15,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2023-01-27 23:23:15,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 900 transitions. [2023-01-27 23:23:15,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 900 transitions. [2023-01-27 23:23:15,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:15,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 900 transitions. [2023-01-27 23:23:15,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:15,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:15,564 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:15,565 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 900 transitions. [2023-01-27 23:23:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-01-27 23:23:15,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 23:23:15,566 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-01-27 23:23:15,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-01-27 23:23:15,567 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-01-27 23:23:15,567 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-01-27 23:23:15,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:15,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:15,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:15,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:23:15,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:15,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:15,569 INFO L85 PathProgramCache]: Analyzing trace with hash -777538468, now seen corresponding path program 2 times [2023-01-27 23:23:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:15,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878655594] [2023-01-27 23:23:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:15,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:15,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878655594] [2023-01-27 23:23:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878655594] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:23:15,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:23:15,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:23:15,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898832709] [2023-01-27 23:23:15,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:23:15,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:23:15,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:15,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:23:15,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:23:15,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-27 23:23:15,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:15,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:15,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-27 23:23:15,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:16,163 INFO L130 PetriNetUnfolder]: 109/198 cut-off events. [2023-01-27 23:23:16,163 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2023-01-27 23:23:16,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 198 events. 109/198 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 591 event pairs, 24 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 560. Up to 87 conditions per place. [2023-01-27 23:23:16,167 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 40 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2023-01-27 23:23:16,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 52 transitions, 292 flow [2023-01-27 23:23:16,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:23:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:23:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1080 transitions. [2023-01-27 23:23:16,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2023-01-27 23:23:16,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1080 transitions. [2023-01-27 23:23:16,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1080 transitions. [2023-01-27 23:23:16,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:16,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1080 transitions. [2023-01-27 23:23:16,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,180 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,180 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 6 states and 1080 transitions. [2023-01-27 23:23:16,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 52 transitions, 292 flow [2023-01-27 23:23:16,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 275 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-27 23:23:16,184 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 163 flow [2023-01-27 23:23:16,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-01-27 23:23:16,185 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-01-27 23:23:16,188 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 163 flow [2023-01-27 23:23:16,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:16,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:23:16,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:16,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 579336880, now seen corresponding path program 3 times [2023-01-27 23:23:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:16,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82341707] [2023-01-27 23:23:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82341707] [2023-01-27 23:23:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82341707] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:23:16,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:23:16,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:23:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335676797] [2023-01-27 23:23:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:23:16,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:23:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:16,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:23:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:23:16,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-27 23:23:16,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:16,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-27 23:23:16,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:16,658 INFO L130 PetriNetUnfolder]: 119/214 cut-off events. [2023-01-27 23:23:16,658 INFO L131 PetriNetUnfolder]: For 334/334 co-relation queries the response was YES. [2023-01-27 23:23:16,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 214 events. 119/214 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 684 event pairs, 28 based on Foata normal form. 4/187 useless extension candidates. Maximal degree in co-relation 778. Up to 111 conditions per place. [2023-01-27 23:23:16,660 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 40 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2023-01-27 23:23:16,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 376 flow [2023-01-27 23:23:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:23:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:23:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 901 transitions. [2023-01-27 23:23:16,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2023-01-27 23:23:16,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 901 transitions. [2023-01-27 23:23:16,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 901 transitions. [2023-01-27 23:23:16,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:16,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 901 transitions. [2023-01-27 23:23:16,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.2) internal successors, (901), 5 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,670 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,670 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 163 flow. Second operand 5 states and 901 transitions. [2023-01-27 23:23:16,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 376 flow [2023-01-27 23:23:16,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 362 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-01-27 23:23:16,674 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 255 flow [2023-01-27 23:23:16,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-01-27 23:23:16,675 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-01-27 23:23:16,675 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 255 flow [2023-01-27 23:23:16,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:16,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:16,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:23:16,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:16,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:16,677 INFO L85 PathProgramCache]: Analyzing trace with hash -149932496, now seen corresponding path program 4 times [2023-01-27 23:23:16,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:16,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769008814] [2023-01-27 23:23:16,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:16,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769008814] [2023-01-27 23:23:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769008814] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:23:16,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:23:16,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:23:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534781791] [2023-01-27 23:23:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:23:16,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:23:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:23:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:23:16,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-27 23:23:16,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:16,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-27 23:23:16,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:16,959 INFO L130 PetriNetUnfolder]: 115/210 cut-off events. [2023-01-27 23:23:16,959 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2023-01-27 23:23:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 210 events. 115/210 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 664 event pairs, 36 based on Foata normal form. 4/189 useless extension candidates. Maximal degree in co-relation 848. Up to 167 conditions per place. [2023-01-27 23:23:16,961 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 33 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2023-01-27 23:23:16,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 430 flow [2023-01-27 23:23:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:23:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:23:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2023-01-27 23:23:16,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760504201680672 [2023-01-27 23:23:16,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2023-01-27 23:23:16,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2023-01-27 23:23:16,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:16,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2023-01-27 23:23:16,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,970 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,970 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 255 flow. Second operand 5 states and 895 transitions. [2023-01-27 23:23:16,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 430 flow [2023-01-27 23:23:16,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 414 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 23:23:16,974 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 347 flow [2023-01-27 23:23:16,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-01-27 23:23:16,975 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-01-27 23:23:16,975 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 347 flow [2023-01-27 23:23:16,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:16,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:16,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:23:16,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:16,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash -861950526, now seen corresponding path program 5 times [2023-01-27 23:23:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:16,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95676309] [2023-01-27 23:23:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:17,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:17,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95676309] [2023-01-27 23:23:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95676309] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:23:17,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:23:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:23:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75553604] [2023-01-27 23:23:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:23:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:23:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:23:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:23:17,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-27 23:23:17,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:17,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-27 23:23:17,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:17,368 INFO L130 PetriNetUnfolder]: 116/213 cut-off events. [2023-01-27 23:23:17,368 INFO L131 PetriNetUnfolder]: For 616/616 co-relation queries the response was YES. [2023-01-27 23:23:17,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 213 events. 116/213 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 688 event pairs, 24 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 920. Up to 113 conditions per place. [2023-01-27 23:23:17,370 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 41 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2023-01-27 23:23:17,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 503 flow [2023-01-27 23:23:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:23:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:23:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 899 transitions. [2023-01-27 23:23:17,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777310924369748 [2023-01-27 23:23:17,373 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 899 transitions. [2023-01-27 23:23:17,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 899 transitions. [2023-01-27 23:23:17,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:17,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 899 transitions. [2023-01-27 23:23:17,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,379 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,379 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 347 flow. Second operand 5 states and 899 transitions. [2023-01-27 23:23:17,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 503 flow [2023-01-27 23:23:17,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 460 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-01-27 23:23:17,383 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 344 flow [2023-01-27 23:23:17,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-01-27 23:23:17,384 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 29 predicate places. [2023-01-27 23:23:17,384 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 344 flow [2023-01-27 23:23:17,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:17,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:17,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:23:17,385 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:17,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1591219902, now seen corresponding path program 6 times [2023-01-27 23:23:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:17,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789721873] [2023-01-27 23:23:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:17,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:17,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789721873] [2023-01-27 23:23:17,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789721873] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:23:17,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:23:17,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:23:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237838452] [2023-01-27 23:23:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:23:17,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:23:17,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:17,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:23:17,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:23:17,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 476 [2023-01-27 23:23:17,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:17,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 476 [2023-01-27 23:23:17,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:17,729 INFO L130 PetriNetUnfolder]: 115/206 cut-off events. [2023-01-27 23:23:17,729 INFO L131 PetriNetUnfolder]: For 707/707 co-relation queries the response was YES. [2023-01-27 23:23:17,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 206 events. 115/206 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 636 event pairs, 35 based on Foata normal form. 2/183 useless extension candidates. Maximal degree in co-relation 884. Up to 160 conditions per place. [2023-01-27 23:23:17,731 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 34 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2023-01-27 23:23:17,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 472 flow [2023-01-27 23:23:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:23:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:23:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2023-01-27 23:23:17,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760504201680672 [2023-01-27 23:23:17,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2023-01-27 23:23:17,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2023-01-27 23:23:17,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:17,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2023-01-27 23:23:17,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,741 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 344 flow. Second operand 5 states and 895 transitions. [2023-01-27 23:23:17,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 472 flow [2023-01-27 23:23:17,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 438 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 23:23:17,745 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 350 flow [2023-01-27 23:23:17,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-01-27 23:23:17,746 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 31 predicate places. [2023-01-27 23:23:17,746 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 350 flow [2023-01-27 23:23:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:17,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:17,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:17,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:23:17,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:17,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1586382571, now seen corresponding path program 1 times [2023-01-27 23:23:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:17,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999279783] [2023-01-27 23:23:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999279783] [2023-01-27 23:23:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999279783] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:23:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199451393] [2023-01-27 23:23:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:23:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:23:18,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:23:18,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:23:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:18,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-27 23:23:18,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:23:18,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:23:18,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:23:18,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:23:19,823 INFO L321 Elim1Store]: treesize reduction 159, result has 14.1 percent of original size [2023-01-27 23:23:19,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 638 treesize of output 387 [2023-01-27 23:23:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:23:20,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:23:28,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:28,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 568 treesize of output 328 [2023-01-27 23:23:28,339 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:28,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 1744 treesize of output 1536 [2023-01-27 23:23:28,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:28,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 393 treesize of output 269 [2023-01-27 23:23:29,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:29,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 274 treesize of output 276 [2023-01-27 23:23:35,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:35,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 328 treesize of output 196 [2023-01-27 23:23:35,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:35,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 1090 treesize of output 982 [2023-01-27 23:23:35,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:35,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 245 treesize of output 185 [2023-01-27 23:23:35,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:23:35,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 190 [2023-01-27 23:23:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:23:36,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199451393] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:23:36,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:23:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-01-27 23:23:36,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628214484] [2023-01-27 23:23:36,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:23:36,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:23:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:36,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:23:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=237, Unknown=4, NotChecked=0, Total=306 [2023-01-27 23:23:36,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 476 [2023-01-27 23:23:36,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 350 flow. Second operand has 18 states, 18 states have (on average 87.66666666666667) internal successors, (1578), 18 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:36,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:36,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 476 [2023-01-27 23:23:36,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:23:47,505 WARN L222 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:23:49,573 INFO L130 PetriNetUnfolder]: 403/726 cut-off events. [2023-01-27 23:23:49,574 INFO L131 PetriNetUnfolder]: For 1970/1970 co-relation queries the response was YES. [2023-01-27 23:23:49,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 726 events. 403/726 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3334 event pairs, 22 based on Foata normal form. 8/608 useless extension candidates. Maximal degree in co-relation 2363. Up to 221 conditions per place. [2023-01-27 23:23:49,577 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 83 selfloop transitions, 41 changer transitions 79/203 dead transitions. [2023-01-27 23:23:49,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 203 transitions, 1636 flow [2023-01-27 23:23:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 23:23:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 23:23:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2128 transitions. [2023-01-27 23:23:49,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19437340153452684 [2023-01-27 23:23:49,585 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2128 transitions. [2023-01-27 23:23:49,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2128 transitions. [2023-01-27 23:23:49,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:23:49,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2128 transitions. [2023-01-27 23:23:49,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 92.52173913043478) internal successors, (2128), 23 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:49,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 476.0) internal successors, (11424), 24 states have internal predecessors, (11424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:49,603 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 476.0) internal successors, (11424), 24 states have internal predecessors, (11424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:49,603 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 350 flow. Second operand 23 states and 2128 transitions. [2023-01-27 23:23:49,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 203 transitions, 1636 flow [2023-01-27 23:23:49,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 203 transitions, 1558 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 23:23:49,612 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 640 flow [2023-01-27 23:23:49,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=640, PETRI_PLACES=85, PETRI_TRANSITIONS=66} [2023-01-27 23:23:49,613 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 64 predicate places. [2023-01-27 23:23:49,613 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 640 flow [2023-01-27 23:23:49,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 87.66666666666667) internal successors, (1578), 18 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:49,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:23:49,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:23:49,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 23:23:49,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:23:49,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:23:49,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:23:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1428326089, now seen corresponding path program 1 times [2023-01-27 23:23:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:23:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895960065] [2023-01-27 23:23:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:23:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:23:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:23:50,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895960065] [2023-01-27 23:23:50,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895960065] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:23:50,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007580769] [2023-01-27 23:23:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:23:50,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:23:50,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:23:50,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:23:50,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:23:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:23:50,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-27 23:23:50,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:23:50,777 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-01-27 23:23:50,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 327 treesize of output 306 [2023-01-27 23:23:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:23:50,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:23:55,187 INFO L321 Elim1Store]: treesize reduction 5, result has 92.3 percent of original size [2023-01-27 23:23:55,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 91 [2023-01-27 23:23:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:23:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007580769] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:23:55,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:23:55,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-27 23:23:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484482432] [2023-01-27 23:23:55,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:23:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:23:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:23:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:23:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:23:55,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 476 [2023-01-27 23:23:55,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 66 transitions, 640 flow. Second operand has 20 states, 20 states have (on average 122.4) internal successors, (2448), 20 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:23:55,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:23:55,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 476 [2023-01-27 23:23:55,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:14,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 23:24:17,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 23:24:20,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 23:24:22,024 INFO L130 PetriNetUnfolder]: 672/1235 cut-off events. [2023-01-27 23:24:22,024 INFO L131 PetriNetUnfolder]: For 5656/5656 co-relation queries the response was YES. [2023-01-27 23:24:22,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 1235 events. 672/1235 cut-off events. For 5656/5656 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6555 event pairs, 41 based on Foata normal form. 20/1252 useless extension candidates. Maximal degree in co-relation 5677. Up to 337 conditions per place. [2023-01-27 23:24:22,033 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 140 selfloop transitions, 105 changer transitions 82/327 dead transitions. [2023-01-27 23:24:22,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 327 transitions, 3026 flow [2023-01-27 23:24:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-01-27 23:24:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-01-27 23:24:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 5183 transitions. [2023-01-27 23:24:22,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.265576962492314 [2023-01-27 23:24:22,051 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 5183 transitions. [2023-01-27 23:24:22,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 5183 transitions. [2023-01-27 23:24:22,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:22,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 5183 transitions. [2023-01-27 23:24:22,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 126.41463414634147) internal successors, (5183), 41 states have internal predecessors, (5183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:24:22,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 476.0) internal successors, (19992), 42 states have internal predecessors, (19992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:24:22,090 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 476.0) internal successors, (19992), 42 states have internal predecessors, (19992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:24:22,090 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 640 flow. Second operand 41 states and 5183 transitions. [2023-01-27 23:24:22,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 327 transitions, 3026 flow [2023-01-27 23:24:22,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 327 transitions, 2766 flow, removed 86 selfloop flow, removed 10 redundant places. [2023-01-27 23:24:22,111 INFO L231 Difference]: Finished difference. Result has 129 places, 138 transitions, 1691 flow [2023-01-27 23:24:22,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1691, PETRI_PLACES=129, PETRI_TRANSITIONS=138} [2023-01-27 23:24:22,112 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 108 predicate places. [2023-01-27 23:24:22,112 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 138 transitions, 1691 flow [2023-01-27 23:24:22,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 122.4) internal successors, (2448), 20 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:24:22,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:22,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:22,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:24:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-01-27 23:24:22,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:22,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 662480889, now seen corresponding path program 2 times [2023-01-27 23:24:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:22,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781942632] [2023-01-27 23:24:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:24:22,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781942632] [2023-01-27 23:24:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781942632] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:24:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961827425] [2023-01-27 23:24:22,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:24:22,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:22,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:22,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:24:22,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:24:22,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:24:22,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:24:22,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-27 23:24:22,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:24:23,260 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-01-27 23:24:23,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 327 treesize of output 306 [2023-01-27 23:24:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:23,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:24:28,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:24:28,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 460 treesize of output 341 [2023-01-27 23:30:27,576 WARN L222 SmtUtils]: Spent 5.87m on a formula simplification. DAG size of input: 5060 DAG size of output: 4351 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-27 23:37:24,527 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:37:24,528 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 [2023-01-27 23:37:25,423 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 23:37:25,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:37:25,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:37:25,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-01-27 23:37:25,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:37:25,625 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 45ms.. [2023-01-27 23:37:25,626 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:37:25,626 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:37:25,627 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1] [2023-01-27 23:37:25,629 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:37:25,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:37:25,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:37:25 BasicIcfg [2023-01-27 23:37:25,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:37:25,632 INFO L158 Benchmark]: Toolchain (without parser) took 861672.39ms. Allocated memory was 360.7MB in the beginning and 627.0MB in the end (delta: 266.3MB). Free memory was 318.6MB in the beginning and 554.0MB in the end (delta: -235.4MB). Peak memory consumption was 376.0MB. Max. memory is 16.0GB. [2023-01-27 23:37:25,632 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:37:25,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.21ms. Allocated memory is still 360.7MB. Free memory was 318.4MB in the beginning and 306.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 23:37:25,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.67ms. Allocated memory is still 360.7MB. Free memory was 306.6MB in the beginning and 304.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:37:25,633 INFO L158 Benchmark]: Boogie Preprocessor took 44.75ms. Allocated memory is still 360.7MB. Free memory was 304.5MB in the beginning and 302.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:37:25,633 INFO L158 Benchmark]: RCFGBuilder took 525.16ms. Allocated memory is still 360.7MB. Free memory was 302.7MB in the beginning and 283.1MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 23:37:25,633 INFO L158 Benchmark]: TraceAbstraction took 860839.40ms. Allocated memory was 360.7MB in the beginning and 627.0MB in the end (delta: 266.3MB). Free memory was 282.4MB in the beginning and 554.0MB in the end (delta: -271.6MB). Peak memory consumption was 338.3MB. Max. memory is 16.0GB. [2023-01-27 23:37:25,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 205.21ms. Allocated memory is still 360.7MB. Free memory was 318.4MB in the beginning and 306.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.67ms. Allocated memory is still 360.7MB. Free memory was 306.6MB in the beginning and 304.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.75ms. Allocated memory is still 360.7MB. Free memory was 304.5MB in the beginning and 302.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 525.16ms. Allocated memory is still 360.7MB. Free memory was 302.7MB in the beginning and 283.1MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 860839.40ms. Allocated memory was 360.7MB in the beginning and 627.0MB in the end (delta: 266.3MB). Free memory was 282.4MB in the beginning and 554.0MB in the end (delta: -271.6MB). Peak memory consumption was 338.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.0s, 198 PlacesBefore, 21 PlacesAfterwards, 212 TransitionsBefore, 17 TransitionsAfterwards, 5492 CoEnabledTransitionPairs, 7 FixpointIterations, 64 TrivialSequentialCompositions, 116 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 38 ConcurrentYvCompositions, 18 ChoiceCompositions, 254 TotalNumberOfCompositions, 5306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5274, independent: 5267, independent conditional: 0, independent unconditional: 5267, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3364, independent: 3360, independent conditional: 0, independent unconditional: 3360, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5274, independent: 1907, independent conditional: 0, independent unconditional: 1907, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 3364, unknown conditional: 0, unknown unconditional: 3364] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 45ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 45ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 19 for 45ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 313 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: 860.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 41.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.1s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 451 SdHoareTripleChecker+Valid, 16.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 451 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 15.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2199 IncrementalHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 33 mSDtfsCounter, 2199 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 27.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1691occurred in iteration=9, InterpolantAutomatonStates: 98, 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 25.8s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 187 ConstructedInterpolants, 3 QuantifiedInterpolants, 4536 SizeOfPredicates, 67 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 9/18 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