/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:21:33,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:21:33,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:21:33,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 11:21:33,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 11:21:33,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 11:21:33,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 11:21:33,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 11:21:33,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 11:21:33,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 11:21:33,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 11:21:33,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 11:21:33,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:21:33,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:21:33,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:21:33,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:21:33,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:21:33,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:21:33,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:21:33,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:21:33,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:21:33,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:21:33,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:21:33,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:21:34,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 11:21:34,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 11:21:34,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 11:21:34,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 11:21:34,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 11:21:34,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 11:21:34,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 11:21:34,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 11:21:34,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 11:21:34,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 11:21:34,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 11:21:34,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 11:21:34,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 11:21:34,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 11:21:34,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:21:34,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:21:34,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:21:34,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 11:21:34,041 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:21:34,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:21:34,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:21:34,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:21:34,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:21:34,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:21:34,043 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:21:34,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:21:34,043 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:21:34,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:21:34,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:21:34,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:21:34,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:21:34,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:21:34,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:21:34,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:21:34,046 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:21:34,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:21:34,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:21:34,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:21:34,232 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:21:34,238 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:21:34,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-01-28 11:21:35,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:21:35,281 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:21:35,282 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-01-28 11:21:35,286 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec4c6e75/3c0a7cab2d954ea8bedde29028ea62ac/FLAGda93e0082 [2023-01-28 11:21:35,296 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec4c6e75/3c0a7cab2d954ea8bedde29028ea62ac [2023-01-28 11:21:35,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:21:35,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:21:35,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:21:35,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:21:35,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:21:35,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5985b269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35, skipping insertion in model container [2023-01-28 11:21:35,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:21:35,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:21:35,466 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/popl20-more-vector-add.wvr.c[2598,2611] [2023-01-28 11:21:35,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:21:35,484 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:21:35,514 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/popl20-more-vector-add.wvr.c[2598,2611] [2023-01-28 11:21:35,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:21:35,531 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:21:35,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35 WrapperNode [2023-01-28 11:21:35,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:21:35,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:21:35,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:21:35,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:21:35,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,578 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 200 [2023-01-28 11:21:35,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:21:35,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:21:35,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:21:35,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:21:35,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:21:35,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:21:35,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:21:35,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:21:35,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (1/1) ... [2023-01-28 11:21:35,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:21:35,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:35,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 11:21:35,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 11:21:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:21:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:21:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:21:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:21:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:21:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:21:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:21:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:21:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:21:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:21:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:21:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 11:21:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:21:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:21:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:21:35,684 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 11:21:35,761 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:21:35,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:21:36,124 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:21:36,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:21:36,133 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-28 11:21:36,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:21:36 BoogieIcfgContainer [2023-01-28 11:21:36,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:21:36,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:21:36,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:21:36,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:21:36,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:21:35" (1/3) ... [2023-01-28 11:21:36,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53dd417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:21:36, skipping insertion in model container [2023-01-28 11:21:36,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:21:35" (2/3) ... [2023-01-28 11:21:36,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53dd417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:21:36, skipping insertion in model container [2023-01-28 11:21:36,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:21:36" (3/3) ... [2023-01-28 11:21:36,140 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-01-28 11:21:36,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:21:36,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:21:36,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:21:36,225 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 11:21:36,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 272 transitions, 568 flow [2023-01-28 11:21:36,345 INFO L130 PetriNetUnfolder]: 25/269 cut-off events. [2023-01-28 11:21:36,346 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:21:36,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 25/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-01-28 11:21:36,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 272 transitions, 568 flow [2023-01-28 11:21:36,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 536 flow [2023-01-28 11:21:36,369 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:21:36,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 536 flow [2023-01-28 11:21:36,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 536 flow [2023-01-28 11:21:36,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 536 flow [2023-01-28 11:21:36,457 INFO L130 PetriNetUnfolder]: 25/259 cut-off events. [2023-01-28 11:21:36,457 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:21:36,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 259 events. 25/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 184 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-01-28 11:21:36,462 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-01-28 11:21:42,243 INFO L134 LiptonReduction]: Checked pairs total: 4237 [2023-01-28 11:21:42,244 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-01-28 11:21:42,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:21:42,260 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;@403883f1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:21:42,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 11:21:42,265 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2023-01-28 11:21:42,266 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 11:21:42,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:42,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:42,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:42,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1534120368, now seen corresponding path program 1 times [2023-01-28 11:21:42,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:42,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340830172] [2023-01-28 11:21:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:42,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:21:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:42,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340830172] [2023-01-28 11:21:42,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340830172] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:21:42,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:21:42,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:21:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383211313] [2023-01-28 11:21:42,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:21:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:21:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:21:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:21:42,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 539 [2023-01-28 11:21:42,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:42,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:42,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 539 [2023-01-28 11:21:42,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:42,987 INFO L130 PetriNetUnfolder]: 1632/2322 cut-off events. [2023-01-28 11:21:42,987 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 11:21:42,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2322 events. 1632/2322 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10376 event pairs, 885 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 1294. Up to 755 conditions per place. [2023-01-28 11:21:42,998 INFO L137 encePairwiseOnDemand]: 529/539 looper letters, 26 selfloop transitions, 8 changer transitions 56/96 dead transitions. [2023-01-28 11:21:42,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 426 flow [2023-01-28 11:21:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:21:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:21:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-01-28 11:21:43,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38849721706864565 [2023-01-28 11:21:43,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-01-28 11:21:43,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-01-28 11:21:43,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:43,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-01-28 11:21:43,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,031 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1047 transitions. [2023-01-28 11:21:43,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 426 flow [2023-01-28 11:21:43,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 11:21:43,038 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2023-01-28 11:21:43,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-01-28 11:21:43,041 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-01-28 11:21:43,041 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2023-01-28 11:21:43,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:43,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:43,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:21:43,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:43,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:43,043 INFO L85 PathProgramCache]: Analyzing trace with hash -432182153, now seen corresponding path program 1 times [2023-01-28 11:21:43,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:43,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40360789] [2023-01-28 11:21:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:43,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40360789] [2023-01-28 11:21:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40360789] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863310059] [2023-01-28 11:21:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:43,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:43,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:43,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:43,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 11:21:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:43,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:21:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:43,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:21:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863310059] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:43,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:21:43,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 11:21:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849116280] [2023-01-28 11:21:43,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:21:43,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:21:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:21:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 11:21:43,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 539 [2023-01-28 11:21:43,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:43,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 539 [2023-01-28 11:21:43,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:43,560 INFO L130 PetriNetUnfolder]: 757/1100 cut-off events. [2023-01-28 11:21:43,560 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 11:21:43,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1100 events. 757/1100 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4295 event pairs, 239 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 2201. Up to 543 conditions per place. [2023-01-28 11:21:43,566 INFO L137 encePairwiseOnDemand]: 533/539 looper letters, 43 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2023-01-28 11:21:43,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 252 flow [2023-01-28 11:21:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:21:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:21:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 971 transitions. [2023-01-28 11:21:43,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602968460111317 [2023-01-28 11:21:43,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 971 transitions. [2023-01-28 11:21:43,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 971 transitions. [2023-01-28 11:21:43,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:43,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 971 transitions. [2023-01-28 11:21:43,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,574 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 971 transitions. [2023-01-28 11:21:43,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 252 flow [2023-01-28 11:21:43,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 234 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 11:21:43,576 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2023-01-28 11:21:43,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-01-28 11:21:43,576 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-01-28 11:21:43,577 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2023-01-28 11:21:43,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:43,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:43,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:43,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 11:21:43,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:43,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:43,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:43,783 INFO L85 PathProgramCache]: Analyzing trace with hash 260537364, now seen corresponding path program 1 times [2023-01-28 11:21:43,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:43,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009552235] [2023-01-28 11:21:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:43,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:43,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:43,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009552235] [2023-01-28 11:21:43,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009552235] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:43,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31519150] [2023-01-28 11:21:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:43,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:43,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:43,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:43,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 11:21:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:44,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 11:21:44,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:44,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:21:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:44,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31519150] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:44,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:21:44,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-01-28 11:21:44,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118630241] [2023-01-28 11:21:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:21:44,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 11:21:44,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 11:21:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-01-28 11:21:44,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 539 [2023-01-28 11:21:44,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:44,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:44,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 539 [2023-01-28 11:21:44,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:44,429 INFO L130 PetriNetUnfolder]: 1273/1850 cut-off events. [2023-01-28 11:21:44,429 INFO L131 PetriNetUnfolder]: For 938/1158 co-relation queries the response was YES. [2023-01-28 11:21:44,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 1850 events. 1273/1850 cut-off events. For 938/1158 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8112 event pairs, 323 based on Foata normal form. 220/1854 useless extension candidates. Maximal degree in co-relation 4387. Up to 673 conditions per place. [2023-01-28 11:21:44,438 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 95 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2023-01-28 11:21:44,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 112 transitions, 568 flow [2023-01-28 11:21:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 11:21:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 11:21:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1677 transitions. [2023-01-28 11:21:44,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34570191713048853 [2023-01-28 11:21:44,442 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1677 transitions. [2023-01-28 11:21:44,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1677 transitions. [2023-01-28 11:21:44,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:44,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1677 transitions. [2023-01-28 11:21:44,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 186.33333333333334) internal successors, (1677), 9 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:44,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:44,451 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:44,451 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 9 states and 1677 transitions. [2023-01-28 11:21:44,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 112 transitions, 568 flow [2023-01-28 11:21:44,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 112 transitions, 552 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 11:21:44,454 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 213 flow [2023-01-28 11:21:44,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2023-01-28 11:21:44,454 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-01-28 11:21:44,454 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 213 flow [2023-01-28 11:21:44,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:44,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:44,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:44,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 11:21:44,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 11:21:44,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:44,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -316438106, now seen corresponding path program 2 times [2023-01-28 11:21:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:44,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467895973] [2023-01-28 11:21:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:44,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:44,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:44,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467895973] [2023-01-28 11:21:44,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467895973] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:44,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402329183] [2023-01-28 11:21:44,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:21:44,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:44,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:44,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:44,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 11:21:44,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:21:44,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:21:44,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 11:21:44,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:44,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 11:21:44,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402329183] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:21:44,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 11:21:44,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-01-28 11:21:44,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348355069] [2023-01-28 11:21:44,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:21:44,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:21:44,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:21:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-01-28 11:21:44,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 539 [2023-01-28 11:21:44,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:44,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:44,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 539 [2023-01-28 11:21:44,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:45,254 INFO L130 PetriNetUnfolder]: 2209/3209 cut-off events. [2023-01-28 11:21:45,254 INFO L131 PetriNetUnfolder]: For 2718/3098 co-relation queries the response was YES. [2023-01-28 11:21:45,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 3209 events. 2209/3209 cut-off events. For 2718/3098 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14882 event pairs, 889 based on Foata normal form. 381/3584 useless extension candidates. Maximal degree in co-relation 9164. Up to 1821 conditions per place. [2023-01-28 11:21:45,267 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 97 selfloop transitions, 8 changer transitions 11/118 dead transitions. [2023-01-28 11:21:45,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 118 transitions, 701 flow [2023-01-28 11:21:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:21:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:21:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1400 transitions. [2023-01-28 11:21:45,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2023-01-28 11:21:45,270 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1400 transitions. [2023-01-28 11:21:45,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1400 transitions. [2023-01-28 11:21:45,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:45,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1400 transitions. [2023-01-28 11:21:45,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:45,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:45,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:45,276 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 213 flow. Second operand 6 states and 1400 transitions. [2023-01-28 11:21:45,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 118 transitions, 701 flow [2023-01-28 11:21:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 118 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 11:21:45,285 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 283 flow [2023-01-28 11:21:45,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-01-28 11:21:45,286 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2023-01-28 11:21:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 283 flow [2023-01-28 11:21:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:45,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:45,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:45,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 11:21:45,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:45,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:45,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2030662522, now seen corresponding path program 3 times [2023-01-28 11:21:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:45,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724113015] [2023-01-28 11:21:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:45,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724113015] [2023-01-28 11:21:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724113015] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855811924] [2023-01-28 11:21:45,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 11:21:45,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:45,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:45,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:45,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 11:21:45,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 11:21:45,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:21:45,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 11:21:45,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:45,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 11:21:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855811924] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:21:45,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 11:21:45,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-01-28 11:21:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036118460] [2023-01-28 11:21:45,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:21:45,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:21:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:21:45,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-28 11:21:45,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 539 [2023-01-28 11:21:45,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:45,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:45,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 539 [2023-01-28 11:21:45,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:46,144 INFO L130 PetriNetUnfolder]: 2623/3817 cut-off events. [2023-01-28 11:21:46,144 INFO L131 PetriNetUnfolder]: For 5080/5532 co-relation queries the response was YES. [2023-01-28 11:21:46,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12088 conditions, 3817 events. 2623/3817 cut-off events. For 5080/5532 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18769 event pairs, 1005 based on Foata normal form. 453/4264 useless extension candidates. Maximal degree in co-relation 12059. Up to 1771 conditions per place. [2023-01-28 11:21:46,162 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 94 selfloop transitions, 15 changer transitions 11/122 dead transitions. [2023-01-28 11:21:46,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 122 transitions, 781 flow [2023-01-28 11:21:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:21:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:21:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1409 transitions. [2023-01-28 11:21:46,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356833642547928 [2023-01-28 11:21:46,165 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1409 transitions. [2023-01-28 11:21:46,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1409 transitions. [2023-01-28 11:21:46,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:46,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1409 transitions. [2023-01-28 11:21:46,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.83333333333334) internal successors, (1409), 6 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:46,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:46,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:46,170 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 283 flow. Second operand 6 states and 1409 transitions. [2023-01-28 11:21:46,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 122 transitions, 781 flow [2023-01-28 11:21:46,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 122 transitions, 766 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 11:21:46,185 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 398 flow [2023-01-28 11:21:46,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-01-28 11:21:46,185 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2023-01-28 11:21:46,185 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 398 flow [2023-01-28 11:21:46,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:46,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:46,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:46,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 11:21:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:46,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:46,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1967518296, now seen corresponding path program 4 times [2023-01-28 11:21:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916291491] [2023-01-28 11:21:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:46,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916291491] [2023-01-28 11:21:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916291491] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121083684] [2023-01-28 11:21:46,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 11:21:46,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:46,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:46,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:46,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 11:21:46,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 11:21:46,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:21:46,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:21:46,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:46,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:21:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121083684] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:21:46,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:21:46,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-01-28 11:21:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143837088] [2023-01-28 11:21:46,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:21:46,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 11:21:46,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 11:21:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-28 11:21:46,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 539 [2023-01-28 11:21:46,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:46,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:46,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 539 [2023-01-28 11:21:46,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:47,672 INFO L130 PetriNetUnfolder]: 4349/6260 cut-off events. [2023-01-28 11:21:47,673 INFO L131 PetriNetUnfolder]: For 12447/12447 co-relation queries the response was YES. [2023-01-28 11:21:47,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20966 conditions, 6260 events. 4349/6260 cut-off events. For 12447/12447 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30578 event pairs, 70 based on Foata normal form. 16/6272 useless extension candidates. Maximal degree in co-relation 20934. Up to 1455 conditions per place. [2023-01-28 11:21:47,699 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 193 selfloop transitions, 99 changer transitions 0/292 dead transitions. [2023-01-28 11:21:47,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 292 transitions, 2084 flow [2023-01-28 11:21:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 11:21:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 11:21:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3949 transitions. [2023-01-28 11:21:47,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33302411873840443 [2023-01-28 11:21:47,707 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3949 transitions. [2023-01-28 11:21:47,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3949 transitions. [2023-01-28 11:21:47,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:47,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3949 transitions. [2023-01-28 11:21:47,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 179.5) internal successors, (3949), 22 states have internal predecessors, (3949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:47,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:47,724 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:47,724 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 398 flow. Second operand 22 states and 3949 transitions. [2023-01-28 11:21:47,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 292 transitions, 2084 flow [2023-01-28 11:21:47,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 292 transitions, 2038 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-28 11:21:47,773 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1316 flow [2023-01-28 11:21:47,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1316, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2023-01-28 11:21:47,773 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2023-01-28 11:21:47,773 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1316 flow [2023-01-28 11:21:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.3846153846154) internal successors, (2254), 13 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:47,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:47,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:47,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 11:21:47,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:47,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:47,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:47,981 INFO L85 PathProgramCache]: Analyzing trace with hash 902285986, now seen corresponding path program 5 times [2023-01-28 11:21:47,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:47,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656220795] [2023-01-28 11:21:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:47,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:48,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:48,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656220795] [2023-01-28 11:21:48,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656220795] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:48,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920343350] [2023-01-28 11:21:48,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 11:21:48,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:48,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:48,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:48,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 11:21:48,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:21:48,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:21:48,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 11:21:48,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:48,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:21:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920343350] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:21:48,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:21:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-01-28 11:21:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655900800] [2023-01-28 11:21:48,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:21:48,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 11:21:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 11:21:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-01-28 11:21:48,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 539 [2023-01-28 11:21:48,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1316 flow. Second operand has 16 states, 16 states have (on average 173.125) internal successors, (2770), 16 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:48,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:48,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 539 [2023-01-28 11:21:48,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:49,687 INFO L130 PetriNetUnfolder]: 7600/10923 cut-off events. [2023-01-28 11:21:49,687 INFO L131 PetriNetUnfolder]: For 47770/47770 co-relation queries the response was YES. [2023-01-28 11:21:49,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45361 conditions, 10923 events. 7600/10923 cut-off events. For 47770/47770 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 58179 event pairs, 641 based on Foata normal form. 26/10948 useless extension candidates. Maximal degree in co-relation 45277. Up to 1894 conditions per place. [2023-01-28 11:21:49,823 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 285 selfloop transitions, 167 changer transitions 0/452 dead transitions. [2023-01-28 11:21:49,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 452 transitions, 4331 flow [2023-01-28 11:21:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 11:21:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 11:21:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3467 transitions. [2023-01-28 11:21:49,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33854115809003027 [2023-01-28 11:21:49,830 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3467 transitions. [2023-01-28 11:21:49,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3467 transitions. [2023-01-28 11:21:49,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:49,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3467 transitions. [2023-01-28 11:21:49,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 182.47368421052633) internal successors, (3467), 19 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:49,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:49,851 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:49,851 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1316 flow. Second operand 19 states and 3467 transitions. [2023-01-28 11:21:49,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 452 transitions, 4331 flow [2023-01-28 11:21:50,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 452 transitions, 4194 flow, removed 63 selfloop flow, removed 3 redundant places. [2023-01-28 11:21:50,185 INFO L231 Difference]: Finished difference. Result has 125 places, 247 transitions, 2987 flow [2023-01-28 11:21:50,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2987, PETRI_PLACES=125, PETRI_TRANSITIONS=247} [2023-01-28 11:21:50,185 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2023-01-28 11:21:50,186 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 247 transitions, 2987 flow [2023-01-28 11:21:50,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 173.125) internal successors, (2770), 16 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:50,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:50,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:50,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 11:21:50,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:50,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:50,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 166239918, now seen corresponding path program 6 times [2023-01-28 11:21:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046438000] [2023-01-28 11:21:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 11:21:50,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046438000] [2023-01-28 11:21:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046438000] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707874696] [2023-01-28 11:21:50,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 11:21:50,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:50,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:50,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:50,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 11:21:50,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 11:21:50,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:21:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 11:21:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 11:21:50,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 11:21:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707874696] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:21:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 11:21:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-01-28 11:21:50,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376014216] [2023-01-28 11:21:50,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:21:50,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:21:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:21:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:21:50,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-01-28 11:21:50,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 539 [2023-01-28 11:21:50,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 247 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:50,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:21:50,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 539 [2023-01-28 11:21:50,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:21:51,691 INFO L130 PetriNetUnfolder]: 6243/9080 cut-off events. [2023-01-28 11:21:51,692 INFO L131 PetriNetUnfolder]: For 70650/70748 co-relation queries the response was YES. [2023-01-28 11:21:51,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44789 conditions, 9080 events. 6243/9080 cut-off events. For 70650/70748 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 49714 event pairs, 1989 based on Foata normal form. 92/9160 useless extension candidates. Maximal degree in co-relation 44687. Up to 4451 conditions per place. [2023-01-28 11:21:51,747 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 203 selfloop transitions, 67 changer transitions 13/312 dead transitions. [2023-01-28 11:21:51,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 312 transitions, 4005 flow [2023-01-28 11:21:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 11:21:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 11:21:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1403 transitions. [2023-01-28 11:21:51,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43382807668521955 [2023-01-28 11:21:51,755 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1403 transitions. [2023-01-28 11:21:51,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1403 transitions. [2023-01-28 11:21:51,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:21:51,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1403 transitions. [2023-01-28 11:21:51,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:51,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:51,762 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:51,762 INFO L175 Difference]: Start difference. First operand has 125 places, 247 transitions, 2987 flow. Second operand 6 states and 1403 transitions. [2023-01-28 11:21:51,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 312 transitions, 4005 flow [2023-01-28 11:21:52,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 312 transitions, 3815 flow, removed 62 selfloop flow, removed 4 redundant places. [2023-01-28 11:21:52,094 INFO L231 Difference]: Finished difference. Result has 129 places, 251 transitions, 3091 flow [2023-01-28 11:21:52,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3091, PETRI_PLACES=129, PETRI_TRANSITIONS=251} [2023-01-28 11:21:52,094 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2023-01-28 11:21:52,094 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 251 transitions, 3091 flow [2023-01-28 11:21:52,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:21:52,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:21:52,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:21:52,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 11:21:52,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:52,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 11:21:52,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:21:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash 205007497, now seen corresponding path program 1 times [2023-01-28 11:21:52,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:21:52,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11748239] [2023-01-28 11:21:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:21:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:21:55,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:21:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11748239] [2023-01-28 11:21:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11748239] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:21:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568235613] [2023-01-28 11:21:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:21:55,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:21:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:21:55,167 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:21:55,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 11:21:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:21:55,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-28 11:21:55,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:21:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,366 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2023-01-28 11:21:55,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2023-01-28 11:21:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,510 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-28 11:21:55,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-01-28 11:21:55,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,710 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-01-28 11:21:55,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2023-01-28 11:21:55,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:55,898 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-01-28 11:21:55,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2023-01-28 11:21:56,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-01-28 11:21:56,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:56,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:56,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:56,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-01-28 11:21:56,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:56,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:56,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:21:56,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-01-28 11:21:57,301 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:21:57,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2023-01-28 11:21:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:21:57,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:22:24,094 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-01-28 11:22:24,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 190 [2023-01-28 11:22:24,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:22:24,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233057 treesize of output 224681 [2023-01-28 11:22:27,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:22:27,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36342 treesize of output 31718 [2023-01-28 11:22:30,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:22:30,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41654 treesize of output 31942 [2023-01-28 11:22:35,192 WARN L222 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 1044 DAG size of output: 1035 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 11:22:43,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:22:43,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10427 treesize of output 9751 [2023-01-28 11:24:18,052 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:27:07,406 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:30:15,183 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:33:20,507 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 11:34:42,198 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-28 11:35:25,517 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 11:35:25,519 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 11:35:25,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 11:35:25,548 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:35:25,551 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:35:25,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-01-28 11:35:25,720 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 7ms.. [2023-01-28 11:35:25,721 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 11:35:25,721 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 11:35:25,721 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 11:35:25,722 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2023-01-28 11:35:25,724 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:35:25,724 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:35:25,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:35:25 BasicIcfg [2023-01-28 11:35:25,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:35:25,726 INFO L158 Benchmark]: Toolchain (without parser) took 830427.48ms. Allocated memory was 354.4MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 293.8MB in the beginning and 1.2GB in the end (delta: -880.1MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-28 11:35:25,726 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 303.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:35:25,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.26ms. Allocated memory is still 354.4MB. Free memory was 293.5MB in the beginning and 282.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 11:35:25,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.05ms. Allocated memory is still 354.4MB. Free memory was 282.0MB in the beginning and 279.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 11:35:25,727 INFO L158 Benchmark]: Boogie Preprocessor took 44.54ms. Allocated memory is still 354.4MB. Free memory was 279.7MB in the beginning and 277.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:35:25,727 INFO L158 Benchmark]: RCFGBuilder took 510.97ms. Allocated memory was 354.4MB in the beginning and 532.7MB in the end (delta: 178.3MB). Free memory was 277.8MB in the beginning and 485.6MB in the end (delta: -207.8MB). Peak memory consumption was 15.5MB. Max. memory is 16.0GB. [2023-01-28 11:35:25,727 INFO L158 Benchmark]: TraceAbstraction took 829589.39ms. Allocated memory was 532.7MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 485.6MB in the beginning and 1.2GB in the end (delta: -688.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-28 11:35:25,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 354.4MB. Free memory is still 303.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 232.26ms. Allocated memory is still 354.4MB. Free memory was 293.5MB in the beginning and 282.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.05ms. Allocated memory is still 354.4MB. Free memory was 282.0MB in the beginning and 279.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.54ms. Allocated memory is still 354.4MB. Free memory was 279.7MB in the beginning and 277.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 510.97ms. Allocated memory was 354.4MB in the beginning and 532.7MB in the end (delta: 178.3MB). Free memory was 277.8MB in the beginning and 485.6MB in the end (delta: -207.8MB). Peak memory consumption was 15.5MB. Max. memory is 16.0GB. * TraceAbstraction took 829589.39ms. Allocated memory was 532.7MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 485.6MB in the beginning and 1.2GB in the end (delta: -688.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 244 PlacesBefore, 39 PlacesAfterwards, 259 TransitionsBefore, 36 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 165 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 45 TrivialYvCompositions, 6 ConcurrentYvCompositions, 18 ChoiceCompositions, 267 TotalNumberOfCompositions, 4237 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2434, independent: 2300, independent conditional: 0, independent unconditional: 2300, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1133, independent: 1086, independent conditional: 0, independent unconditional: 1086, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2434, independent: 1214, independent conditional: 0, independent unconditional: 1214, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1133, unknown conditional: 0, unknown unconditional: 1133] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 7ms.. - TimeoutResultAtElement [Line: 87]: 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 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 7ms.. - TimeoutResultAtElement [Line: 88]: 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 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 7ms.. - TimeoutResultAtElement [Line: 89]: 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 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 7ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 290 locations, 4 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: 829.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 719 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 719 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 159 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2977 IncrementalHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 56 mSDtfsCounter, 2977 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 286 SyntacticMatches, 8 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3091occurred in iteration=8, InterpolantAutomatonStates: 78, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 437 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 1561 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2078 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 72/87 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