/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:22:06,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:22:06,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:22:06,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:22:06,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:22:06,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:22:06,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:22:06,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:22:06,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:22:06,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:22:06,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:22:06,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:22:06,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:22:06,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:22:06,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:22:06,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:22:06,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:22:06,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:22:06,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:22:06,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:22:06,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:22:06,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:22:06,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:22:06,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:22:06,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:22:06,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:22:06,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:22:06,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:22:06,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:22:06,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:22:06,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:22:06,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:22:06,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:22:06,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:22:06,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:22:06,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:22:06,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:22:06,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:22:06,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:22:06,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:22:06,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:22:06,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:22:06,613 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:22:06,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:22:06,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:22:06,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:22:06,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:22:06,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:22:06,614 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:22:06,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:22:06,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:22:06,616 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:22:06,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:22:06,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:22:06,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:22:06,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:22:06,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:22:06,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:22:06,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:22:06,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:22:06,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:22:06,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:22:06,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:22:06,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:22:06,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:22:06,617 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:22:06,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:22:06,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:22:06,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:22:06,817 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:22:06,819 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:22:06,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-01-27 20:22:07,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:22:08,106 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:22:08,107 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-01-27 20:22:08,113 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bc01e7a/4d4633e63c9a4e2687ce3b62c699cf81/FLAG9db6c929f [2023-01-27 20:22:08,126 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bc01e7a/4d4633e63c9a4e2687ce3b62c699cf81 [2023-01-27 20:22:08,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:22:08,129 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:22:08,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:22:08,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:22:08,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:22:08,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378a7c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08, skipping insertion in model container [2023-01-27 20:22:08,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:22:08,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:22:08,317 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-01-27 20:22:08,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:22:08,332 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:22:08,359 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-01-27 20:22:08,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:22:08,375 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:22:08,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08 WrapperNode [2023-01-27 20:22:08,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:22:08,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:22:08,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:22:08,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:22:08,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,428 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 406 [2023-01-27 20:22:08,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:22:08,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:22:08,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:22:08,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:22:08,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:22:08,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:22:08,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:22:08,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:22:08,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (1/1) ... [2023-01-27 20:22:08,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:22:08,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:08,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:22:08,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:22:08,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:22:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:22:08,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:22:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:22:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:22:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:22:08,546 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:22:08,650 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:22:08,651 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:22:09,238 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:22:09,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:22:09,252 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 20:22:09,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:22:09 BoogieIcfgContainer [2023-01-27 20:22:09,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:22:09,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:22:09,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:22:09,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:22:09,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:22:08" (1/3) ... [2023-01-27 20:22:09,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ad1d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:22:09, skipping insertion in model container [2023-01-27 20:22:09,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:08" (2/3) ... [2023-01-27 20:22:09,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ad1d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:22:09, skipping insertion in model container [2023-01-27 20:22:09,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:22:09" (3/3) ... [2023-01-27 20:22:09,278 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-01-27 20:22:09,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:22:09,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:22:09,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:22:09,497 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 20:22:09,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 485 transitions, 986 flow [2023-01-27 20:22:09,714 INFO L130 PetriNetUnfolder]: 49/483 cut-off events. [2023-01-27 20:22:09,715 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:22:09,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 483 events. 49/483 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1351 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-01-27 20:22:09,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 485 transitions, 986 flow [2023-01-27 20:22:09,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 433 places, 475 transitions, 962 flow [2023-01-27 20:22:09,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:22:09,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 433 places, 475 transitions, 962 flow [2023-01-27 20:22:09,755 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 433 places, 475 transitions, 962 flow [2023-01-27 20:22:09,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 475 transitions, 962 flow [2023-01-27 20:22:09,839 INFO L130 PetriNetUnfolder]: 49/475 cut-off events. [2023-01-27 20:22:09,839 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:22:09,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 475 events. 49/475 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1318 event pairs, 0 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-01-27 20:22:09,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 53352 [2023-01-27 20:22:28,902 INFO L134 LiptonReduction]: Checked pairs total: 50280 [2023-01-27 20:22:28,903 INFO L136 LiptonReduction]: Total number of compositions: 621 [2023-01-27 20:22:28,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:22:28,920 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;@38c318e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:22:28,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 20:22:28,926 INFO L130 PetriNetUnfolder]: 7/28 cut-off events. [2023-01-27 20:22:28,926 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:22:28,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:28,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:28,927 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 20:22:28,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash -36243124, now seen corresponding path program 1 times [2023-01-27 20:22:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:28,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056792821] [2023-01-27 20:22:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:22:29,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:29,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056792821] [2023-01-27 20:22:29,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056792821] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:29,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:29,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:22:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345951476] [2023-01-27 20:22:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:29,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:29,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1106 [2023-01-27 20:22:29,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:29,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:29,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1106 [2023-01-27 20:22:29,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:29,444 INFO L130 PetriNetUnfolder]: 157/250 cut-off events. [2023-01-27 20:22:29,444 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-27 20:22:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 157/250 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 638 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 472. Up to 249 conditions per place. [2023-01-27 20:22:29,447 INFO L137 encePairwiseOnDemand]: 1101/1106 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-01-27 20:22:29,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2023-01-27 20:22:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-01-27 20:22:29,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40325497287522605 [2023-01-27 20:22:29,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-01-27 20:22:29,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-01-27 20:22:29,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:29,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-01-27 20:22:29,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:29,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:29,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:29,491 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 1338 transitions. [2023-01-27 20:22:29,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2023-01-27 20:22:29,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:22:29,496 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2023-01-27 20:22:29,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=31} [2023-01-27 20:22:29,505 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-01-27 20:22:29,506 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2023-01-27 20:22:29,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:29,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:29,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:29,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:22:29,507 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 20:22:29,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash -119955902, now seen corresponding path program 1 times [2023-01-27 20:22:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:29,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370128331] [2023-01-27 20:22:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:29,682 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 20:22:29,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:29,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370128331] [2023-01-27 20:22:29,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370128331] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:29,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222761507] [2023-01-27 20:22:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:29,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:29,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:29,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:22:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:29,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:22:29,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:29,871 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 20:22:29,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:22:29,890 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 20:22:29,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222761507] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:22:29,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:22:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-27 20:22:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628000778] [2023-01-27 20:22:29,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:22:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:22:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:22:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:22:29,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1106 [2023-01-27 20:22:29,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 437.875) internal successors, (3503), 8 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:29,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:29,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1106 [2023-01-27 20:22:29,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:30,062 INFO L130 PetriNetUnfolder]: 157/256 cut-off events. [2023-01-27 20:22:30,062 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:22:30,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 256 events. 157/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 642 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 512. Up to 249 conditions per place. [2023-01-27 20:22:30,064 INFO L137 encePairwiseOnDemand]: 1101/1106 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-01-27 20:22:30,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2023-01-27 20:22:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:22:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:22:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2653 transitions. [2023-01-27 20:22:30,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399789029535865 [2023-01-27 20:22:30,071 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2653 transitions. [2023-01-27 20:22:30,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2653 transitions. [2023-01-27 20:22:30,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:30,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2653 transitions. [2023-01-27 20:22:30,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 442.1666666666667) internal successors, (2653), 6 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:30,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1106.0) internal successors, (7742), 7 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:30,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1106.0) internal successors, (7742), 7 states have internal predecessors, (7742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:30,090 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 2653 transitions. [2023-01-27 20:22:30,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2023-01-27 20:22:30,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:30,092 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2023-01-27 20:22:30,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2023-01-27 20:22:30,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-01-27 20:22:30,093 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2023-01-27 20:22:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 437.875) internal successors, (3503), 8 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:30,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:30,096 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:30,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 20:22:30,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:30,302 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 20:22:30,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1905448366, now seen corresponding path program 2 times [2023-01-27 20:22:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:30,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098927298] [2023-01-27 20:22:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:30,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:22:30,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:30,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098927298] [2023-01-27 20:22:30,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098927298] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:30,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076144546] [2023-01-27 20:22:30,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:22:30,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:30,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:30,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:30,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:22:30,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:22:30,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:22:30,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:22:30,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:22:31,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:22:31,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076144546] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:31,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:22:31,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-27 20:22:31,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711441843] [2023-01-27 20:22:31,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:31,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:22:31,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:22:31,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:22:31,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1106 [2023-01-27 20:22:31,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:31,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:31,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1106 [2023-01-27 20:22:31,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:31,715 INFO L130 PetriNetUnfolder]: 165/285 cut-off events. [2023-01-27 20:22:31,715 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 20:22:31,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 285 events. 165/285 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 853 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 249 conditions per place. [2023-01-27 20:22:31,717 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2023-01-27 20:22:31,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2023-01-27 20:22:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:22:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:22:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1709 transitions. [2023-01-27 20:22:31,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3863019891500904 [2023-01-27 20:22:31,723 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1709 transitions. [2023-01-27 20:22:31,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1709 transitions. [2023-01-27 20:22:31,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:31,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1709 transitions. [2023-01-27 20:22:31,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 427.25) internal successors, (1709), 4 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:31,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:31,736 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:31,736 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 1709 transitions. [2023-01-27 20:22:31,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2023-01-27 20:22:31,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:31,740 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2023-01-27 20:22:31,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-01-27 20:22:31,741 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-01-27 20:22:31,742 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 139 flow [2023-01-27 20:22:31,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:31,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:31,743 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:31,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:22:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-27 20:22:31,949 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 20:22:31,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1267452706, now seen corresponding path program 3 times [2023-01-27 20:22:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480470475] [2023-01-27 20:22:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:22:32,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480470475] [2023-01-27 20:22:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480470475] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568683209] [2023-01-27 20:22:32,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:22:32,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:32,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:32,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:32,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:22:32,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:22:32,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:22:32,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:22:32,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:22:32,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:22:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568683209] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:22:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-01-27 20:22:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101538639] [2023-01-27 20:22:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:32,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:22:32,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:32,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:22:32,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:22:32,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 1106 [2023-01-27 20:22:32,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:32,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:32,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 1106 [2023-01-27 20:22:32,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:33,064 INFO L130 PetriNetUnfolder]: 173/317 cut-off events. [2023-01-27 20:22:33,065 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-01-27 20:22:33,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 317 events. 173/317 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1087 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 720. Up to 256 conditions per place. [2023-01-27 20:22:33,066 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2023-01-27 20:22:33,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2023-01-27 20:22:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:22:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:22:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1715 transitions. [2023-01-27 20:22:33,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3876582278481013 [2023-01-27 20:22:33,072 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1715 transitions. [2023-01-27 20:22:33,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1715 transitions. [2023-01-27 20:22:33,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:33,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1715 transitions. [2023-01-27 20:22:33,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 428.75) internal successors, (1715), 4 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,086 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1106.0) internal successors, (5530), 5 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,086 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 139 flow. Second operand 4 states and 1715 transitions. [2023-01-27 20:22:33,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2023-01-27 20:22:33,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:22:33,093 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2023-01-27 20:22:33,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-01-27 20:22:33,094 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-01-27 20:22:33,094 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 145 flow [2023-01-27 20:22:33,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.75) internal successors, (1679), 4 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:33,095 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:33,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:22:33,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:33,301 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 20:22:33,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash 620058531, now seen corresponding path program 1 times [2023-01-27 20:22:33,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:33,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402095521] [2023-01-27 20:22:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:22:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:33,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402095521] [2023-01-27 20:22:33,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402095521] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:33,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116966089] [2023-01-27 20:22:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:33,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:33,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:33,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:33,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:22:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:33,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:22:33,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:22:33,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:22:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 20:22:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116966089] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:22:33,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:22:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-27 20:22:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298357412] [2023-01-27 20:22:33,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:22:33,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:22:33,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:22:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:22:33,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1106 [2023-01-27 20:22:33,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 145 flow. Second operand has 13 states, 13 states have (on average 437.0769230769231) internal successors, (5682), 13 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:33,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1106 [2023-01-27 20:22:33,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:33,848 INFO L130 PetriNetUnfolder]: 172/313 cut-off events. [2023-01-27 20:22:33,848 INFO L131 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2023-01-27 20:22:33,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 313 events. 172/313 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1002 event pairs, 124 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 752. Up to 304 conditions per place. [2023-01-27 20:22:33,850 INFO L137 encePairwiseOnDemand]: 1101/1106 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2023-01-27 20:22:33,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 235 flow [2023-01-27 20:22:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:22:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:22:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3086 transitions. [2023-01-27 20:22:33,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39860501162490314 [2023-01-27 20:22:33,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3086 transitions. [2023-01-27 20:22:33,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3086 transitions. [2023-01-27 20:22:33,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:33,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3086 transitions. [2023-01-27 20:22:33,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 440.85714285714283) internal successors, (3086), 7 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1106.0) internal successors, (8848), 8 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,888 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1106.0) internal successors, (8848), 8 states have internal predecessors, (8848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,888 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 145 flow. Second operand 7 states and 3086 transitions. [2023-01-27 20:22:33,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 235 flow [2023-01-27 20:22:33,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:22:33,890 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 188 flow [2023-01-27 20:22:33,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-27 20:22:33,892 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-01-27 20:22:33,892 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 188 flow [2023-01-27 20:22:33,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 437.0769230769231) internal successors, (5682), 13 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:33,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:33,894 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:33,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:22:34,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:34,103 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 20:22:34,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:34,103 INFO L85 PathProgramCache]: Analyzing trace with hash -856671419, now seen corresponding path program 2 times [2023-01-27 20:22:34,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:34,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518935308] [2023-01-27 20:22:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:34,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:22:34,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:34,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518935308] [2023-01-27 20:22:34,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518935308] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:34,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:34,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023508354] [2023-01-27 20:22:34,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:34,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:34,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:34,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1106 [2023-01-27 20:22:34,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:34,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1106 [2023-01-27 20:22:34,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:34,486 INFO L130 PetriNetUnfolder]: 211/378 cut-off events. [2023-01-27 20:22:34,486 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-27 20:22:34,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 378 events. 211/378 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1308 event pairs, 124 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 846. Up to 318 conditions per place. [2023-01-27 20:22:34,488 INFO L137 encePairwiseOnDemand]: 1103/1106 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-01-27 20:22:34,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 337 flow [2023-01-27 20:22:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1324 transitions. [2023-01-27 20:22:34,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990355635925256 [2023-01-27 20:22:34,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1324 transitions. [2023-01-27 20:22:34,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1324 transitions. [2023-01-27 20:22:34,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:34,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1324 transitions. [2023-01-27 20:22:34,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 441.3333333333333) internal successors, (1324), 3 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,500 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 188 flow. Second operand 3 states and 1324 transitions. [2023-01-27 20:22:34,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 337 flow [2023-01-27 20:22:34,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-27 20:22:34,503 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 176 flow [2023-01-27 20:22:34,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-01-27 20:22:34,505 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-01-27 20:22:34,505 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 176 flow [2023-01-27 20:22:34,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:34,505 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:34,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:22:34,506 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 20:22:34,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash -260660010, now seen corresponding path program 1 times [2023-01-27 20:22:34,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:34,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387343294] [2023-01-27 20:22:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:34,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:22:34,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:34,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387343294] [2023-01-27 20:22:34,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387343294] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:34,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:34,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:34,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813612461] [2023-01-27 20:22:34,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:34,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:34,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1106 [2023-01-27 20:22:34,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:34,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1106 [2023-01-27 20:22:34,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:34,905 INFO L130 PetriNetUnfolder]: 325/564 cut-off events. [2023-01-27 20:22:34,905 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2023-01-27 20:22:34,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 564 events. 325/564 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2003 event pairs, 167 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 1446. Up to 393 conditions per place. [2023-01-27 20:22:34,908 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-27 20:22:34,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 333 flow [2023-01-27 20:22:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1322 transitions. [2023-01-27 20:22:34,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39843279083785416 [2023-01-27 20:22:34,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1322 transitions. [2023-01-27 20:22:34,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1322 transitions. [2023-01-27 20:22:34,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:34,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1322 transitions. [2023-01-27 20:22:34,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.6666666666667) internal successors, (1322), 3 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,920 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 176 flow. Second operand 3 states and 1322 transitions. [2023-01-27 20:22:34,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 333 flow [2023-01-27 20:22:34,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 325 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:34,923 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 191 flow [2023-01-27 20:22:34,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-01-27 20:22:34,924 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-01-27 20:22:34,924 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 191 flow [2023-01-27 20:22:34,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.3333333333333) internal successors, (1294), 3 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:34,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:34,925 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:34,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:22:34,925 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 20:22:34,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash -574296751, now seen corresponding path program 1 times [2023-01-27 20:22:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:34,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773324373] [2023-01-27 20:22:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-01-27 20:22:35,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773324373] [2023-01-27 20:22:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773324373] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:22:35,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:22:35,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:22:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596026143] [2023-01-27 20:22:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:22:35,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:22:35,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:22:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:22:35,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 1106 [2023-01-27 20:22:35,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:35,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:35,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 1106 [2023-01-27 20:22:35,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:35,458 INFO L130 PetriNetUnfolder]: 259/450 cut-off events. [2023-01-27 20:22:35,458 INFO L131 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2023-01-27 20:22:35,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 450 events. 259/450 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1415 event pairs, 94 based on Foata normal form. 38/434 useless extension candidates. Maximal degree in co-relation 1138. Up to 419 conditions per place. [2023-01-27 20:22:35,461 INFO L137 encePairwiseOnDemand]: 1102/1106 looper letters, 43 selfloop transitions, 2 changer transitions 4/49 dead transitions. [2023-01-27 20:22:35,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 314 flow [2023-01-27 20:22:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:22:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:22:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1355 transitions. [2023-01-27 20:22:35,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40837854128993367 [2023-01-27 20:22:35,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1355 transitions. [2023-01-27 20:22:35,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1355 transitions. [2023-01-27 20:22:35,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:35,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1355 transitions. [2023-01-27 20:22:35,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.6666666666667) internal successors, (1355), 3 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:35,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:35,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1106.0) internal successors, (4424), 4 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:35,473 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 191 flow. Second operand 3 states and 1355 transitions. [2023-01-27 20:22:35,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 314 flow [2023-01-27 20:22:35,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:22:35,475 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 198 flow [2023-01-27 20:22:35,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1106, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-01-27 20:22:35,477 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-01-27 20:22:35,478 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 198 flow [2023-01-27 20:22:35,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:35,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:35,478 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:35,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:22:35,478 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 20:22:35,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 736481309, now seen corresponding path program 1 times [2023-01-27 20:22:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334348704] [2023-01-27 20:22:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:22:39,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334348704] [2023-01-27 20:22:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334348704] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072394668] [2023-01-27 20:22:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:39,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:39,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:39,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:39,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:22:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:40,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 20:22:40,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:22:41,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:24:23,016 WARN L222 SmtUtils]: Spent 1.62m on a formula simplification. DAG size of input: 93 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:24:28,369 WARN L222 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 701 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-01-27 20:24:28,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:24:28,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 364 treesize of output 2174 Received shutdown request... [2023-01-27 20:35:51,428 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 20:35:51,430 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 20:35:51,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:35:51,456 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:35:51,456 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 20:35:51,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:35:51,631 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 13ms.. [2023-01-27 20:35:51,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 20:35:51,633 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 20:35:51,633 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-01-27 20:35:51,636 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:35:51,636 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:35:51,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:35:51 BasicIcfg [2023-01-27 20:35:51,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:35:51,638 INFO L158 Benchmark]: Toolchain (without parser) took 823509.43ms. Allocated memory was 369.1MB in the beginning and 1.1GB in the end (delta: 694.2MB). Free memory was 329.2MB in the beginning and 708.2MB in the end (delta: -379.0MB). Peak memory consumption was 660.1MB. Max. memory is 16.0GB. [2023-01-27 20:35:51,638 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 369.1MB. Free memory is still 318.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:35:51,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.94ms. Allocated memory is still 369.1MB. Free memory was 328.8MB in the beginning and 315.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:35:51,639 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.55ms. Allocated memory is still 369.1MB. Free memory was 315.5MB in the beginning and 312.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 20:35:51,639 INFO L158 Benchmark]: Boogie Preprocessor took 57.58ms. Allocated memory is still 369.1MB. Free memory was 312.4MB in the beginning and 310.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:35:51,639 INFO L158 Benchmark]: RCFGBuilder took 767.00ms. Allocated memory is still 369.1MB. Free memory was 310.0MB in the beginning and 276.8MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-01-27 20:35:51,640 INFO L158 Benchmark]: TraceAbstraction took 822365.29ms. Allocated memory was 369.1MB in the beginning and 1.1GB in the end (delta: 694.2MB). Free memory was 276.1MB in the beginning and 708.2MB in the end (delta: -432.1MB). Peak memory consumption was 607.6MB. Max. memory is 16.0GB. [2023-01-27 20:35:51,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 369.1MB. Free memory is still 318.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 245.94ms. Allocated memory is still 369.1MB. Free memory was 328.8MB in the beginning and 315.5MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.55ms. Allocated memory is still 369.1MB. Free memory was 315.5MB in the beginning and 312.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 57.58ms. Allocated memory is still 369.1MB. Free memory was 312.4MB in the beginning and 310.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 767.00ms. Allocated memory is still 369.1MB. Free memory was 310.0MB in the beginning and 276.8MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 822365.29ms. Allocated memory was 369.1MB in the beginning and 1.1GB in the end (delta: 694.2MB). Free memory was 276.1MB in the beginning and 708.2MB in the end (delta: -432.1MB). Peak memory consumption was 607.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.1s, 433 PlacesBefore, 29 PlacesAfterwards, 475 TransitionsBefore, 29 TransitionsAfterwards, 53352 CoEnabledTransitionPairs, 9 FixpointIterations, 138 TrivialSequentialCompositions, 287 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 129 ConcurrentYvCompositions, 42 ChoiceCompositions, 621 TotalNumberOfCompositions, 50280 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48288, independent: 48169, independent conditional: 0, independent unconditional: 48169, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 32707, independent: 32685, independent conditional: 0, independent unconditional: 32685, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48288, independent: 15484, independent conditional: 0, independent unconditional: 15484, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 32707, unknown conditional: 0, unknown unconditional: 32707] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 13ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 13ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 13ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 713 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 822.1s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 689 IncrementalHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 0 mSDtfsCounter, 689 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 106 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 244 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 267 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 46 NumberOfNonLiveVariables, 776 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 184/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown