./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-time-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-time-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f2d05599d6fce1204a0d86fe3e19cae407be0ec265e139da4f0fd53a7d101655 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:15:33,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:15:33,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:15:33,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:15:33,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:15:33,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:15:33,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:15:33,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:15:33,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:15:33,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:15:33,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:15:33,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:15:33,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:15:33,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:15:33,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:15:33,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:15:33,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:15:33,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:15:33,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:15:33,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:15:33,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:15:33,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:15:33,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:15:33,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:15:33,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:15:33,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:15:33,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:15:33,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:15:33,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:15:33,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:15:33,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:15:33,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:15:33,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:15:33,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:15:33,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:15:33,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:15:33,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:15:33,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:15:33,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:15:33,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:15:33,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:15:33,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:15:33,395 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:15:33,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:15:33,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:15:33,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:15:33,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:15:33,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:15:33,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:15:33,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:15:33,399 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:15:33,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:15:33,399 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:15:33,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:15:33,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:15:33,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:15:33,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:15:33,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:15:33,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:15:33,400 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:15:33,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:15:33,401 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:15:33,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:15:33,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:15:33,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:15:33,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:15:33,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:15:33,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:15:33,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:15:33,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:15:33,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:15:33,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:15:33,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:15:33,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:15:33,403 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:15:33,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:15:33,403 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:15:33,403 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2d05599d6fce1204a0d86fe3e19cae407be0ec265e139da4f0fd53a7d101655 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:15:33,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:15:33,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:15:33,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:15:33,686 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:15:33,686 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:15:33,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-trans.wvr.c [2023-09-01 12:15:34,776 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:15:34,916 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:15:34,916 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-trans.wvr.c [2023-09-01 12:15:34,924 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d33d44d/22ff4becc51e4361a45a07447e2f43bf/FLAG57605f0a5 [2023-09-01 12:15:34,935 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d33d44d/22ff4becc51e4361a45a07447e2f43bf [2023-09-01 12:15:34,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:15:34,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:15:34,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:15:34,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:15:34,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:15:34,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:15:34" (1/1) ... [2023-09-01 12:15:34,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da68162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:34, skipping insertion in model container [2023-09-01 12:15:34,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:15:34" (1/1) ... [2023-09-01 12:15:34,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:15:34,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:15:35,086 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-trans.wvr.c[2836,2849] [2023-09-01 12:15:35,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:15:35,097 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:15:35,116 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-trans.wvr.c[2836,2849] [2023-09-01 12:15:35,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:15:35,123 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:15:35,123 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:15:35,127 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:15:35,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35 WrapperNode [2023-09-01 12:15:35,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:15:35,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:15:35,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:15:35,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:15:35,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,161 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 223 [2023-09-01 12:15:35,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:15:35,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:15:35,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:15:35,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:15:35,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:15:35,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:15:35,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:15:35,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:15:35,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (1/1) ... [2023-09-01 12:15:35,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:15:35,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:35,221 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) [2023-09-01 12:15:35,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 12:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:15:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:15:35,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:15:35,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:15:35,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:15:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 12:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 12:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:15:35,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:15:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:15:35,254 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:15:35,322 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:15:35,324 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:15:35,685 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:15:35,874 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:15:35,874 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 12:15:35,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:15:35 BoogieIcfgContainer [2023-09-01 12:15:35,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:15:35,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:15:35,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:15:35,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:15:35,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:15:34" (1/3) ... [2023-09-01 12:15:35,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150b34dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:15:35, skipping insertion in model container [2023-09-01 12:15:35,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:15:35" (2/3) ... [2023-09-01 12:15:35,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150b34dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:15:35, skipping insertion in model container [2023-09-01 12:15:35,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:15:35" (3/3) ... [2023-09-01 12:15:35,883 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-trans.wvr.c [2023-09-01 12:15:35,889 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:15:35,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:15:35,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:15:35,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:15:35,964 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:15:35,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 114 transitions, 252 flow [2023-09-01 12:15:36,058 INFO L130 PetriNetUnfolder]: 1/111 cut-off events. [2023-09-01 12:15:36,058 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:36,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 111 events. 1/111 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-09-01 12:15:36,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 114 transitions, 252 flow [2023-09-01 12:15:36,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 101 transitions, 220 flow [2023-09-01 12:15:36,068 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:15:36,078 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 101 transitions, 220 flow [2023-09-01 12:15:36,081 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 101 transitions, 220 flow [2023-09-01 12:15:36,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 101 transitions, 220 flow [2023-09-01 12:15:36,117 INFO L130 PetriNetUnfolder]: 1/101 cut-off events. [2023-09-01 12:15:36,117 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:36,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 1/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-09-01 12:15:36,120 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-09-01 12:15:39,772 INFO L134 LiptonReduction]: Checked pairs total: 405 [2023-09-01 12:15:39,772 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-09-01 12:15:39,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:15:39,785 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=true, 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;@3b7d146e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:15:39,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:15:39,790 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 12:15:39,790 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:39,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:39,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:39,791 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)] === [2023-09-01 12:15:39,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash 335609193, now seen corresponding path program 1 times [2023-09-01 12:15:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:39,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572037693] [2023-09-01 12:15:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:40,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:40,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572037693] [2023-09-01 12:15:40,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572037693] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:40,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:40,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:40,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051340623] [2023-09-01 12:15:40,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:40,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:40,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:40,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-09-01 12:15:40,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:40,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:40,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-09-01 12:15:40,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:40,833 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-09-01 12:15:40,834 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 12:15:40,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 17 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 130. Up to 45 conditions per place. [2023-09-01 12:15:40,835 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 28 selfloop transitions, 2 changer transitions 7/37 dead transitions. [2023-09-01 12:15:40,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 190 flow [2023-09-01 12:15:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:15:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:15:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2023-09-01 12:15:40,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453921568627451 [2023-09-01 12:15:40,847 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2023-09-01 12:15:40,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2023-09-01 12:15:40,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:40,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2023-09-01 12:15:40,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 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) [2023-09-01 12:15:40,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:40,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:40,858 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 463 transitions. [2023-09-01 12:15:40,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 190 flow [2023-09-01 12:15:40,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:15:40,861 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 53 flow [2023-09-01 12:15:40,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=53, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-09-01 12:15:40,865 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-09-01 12:15:40,865 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 53 flow [2023-09-01 12:15:40,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:40,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:40,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:40,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:15:40,866 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)] === [2023-09-01 12:15:40,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash 604898643, now seen corresponding path program 2 times [2023-09-01 12:15:40,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979215905] [2023-09-01 12:15:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:40,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979215905] [2023-09-01 12:15:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979215905] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:41,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271329769] [2023-09-01 12:15:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:41,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:41,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:41,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:41,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:41,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-09-01 12:15:41,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:41,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:41,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-09-01 12:15:41,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:41,462 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-09-01 12:15:41,463 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-09-01 12:15:41,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 116 events. 38/116 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 408 event pairs, 13 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 288. Up to 58 conditions per place. [2023-09-01 12:15:41,464 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 28 selfloop transitions, 3 changer transitions 9/40 dead transitions. [2023-09-01 12:15:41,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 198 flow [2023-09-01 12:15:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:15:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:15:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2023-09-01 12:15:41,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2023-09-01 12:15:41,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2023-09-01 12:15:41,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2023-09-01 12:15:41,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:41,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2023-09-01 12:15:41,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-09-01 12:15:41,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:41,470 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:41,470 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 53 flow. Second operand 5 states and 465 transitions. [2023-09-01 12:15:41,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 198 flow [2023-09-01 12:15:41,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 40 transitions, 191 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 12:15:41,472 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 70 flow [2023-09-01 12:15:41,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-09-01 12:15:41,472 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-09-01 12:15:41,473 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 70 flow [2023-09-01 12:15:41,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:41,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:41,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:41,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:15:41,474 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)] === [2023-09-01 12:15:41,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash -455877467, now seen corresponding path program 3 times [2023-09-01 12:15:41,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:41,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395039159] [2023-09-01 12:15:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395039159] [2023-09-01 12:15:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395039159] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:41,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:41,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553246381] [2023-09-01 12:15:41,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:41,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:41,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:41,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-09-01 12:15:41,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:41,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:41,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-09-01 12:15:41,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:41,965 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-09-01 12:15:41,965 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2023-09-01 12:15:41,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 103 events. 33/103 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 10 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 312. Up to 36 conditions per place. [2023-09-01 12:15:41,966 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 28 selfloop transitions, 3 changer transitions 11/42 dead transitions. [2023-09-01 12:15:41,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 233 flow [2023-09-01 12:15:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:15:41,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:15:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2023-09-01 12:15:41,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2023-09-01 12:15:41,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2023-09-01 12:15:41,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2023-09-01 12:15:41,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:41,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2023-09-01 12:15:41,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-09-01 12:15:41,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:41,972 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:41,972 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 70 flow. Second operand 5 states and 465 transitions. [2023-09-01 12:15:41,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 233 flow [2023-09-01 12:15:41,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-09-01 12:15:41,974 INFO L231 Difference]: Finished difference. Result has 35 places, 18 transitions, 80 flow [2023-09-01 12:15:41,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2023-09-01 12:15:41,975 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-09-01 12:15:41,975 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 80 flow [2023-09-01 12:15:41,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:41,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:41,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:41,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:15:41,976 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)] === [2023-09-01 12:15:41,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash -447135759, now seen corresponding path program 4 times [2023-09-01 12:15:41,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:41,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798763873] [2023-09-01 12:15:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798763873] [2023-09-01 12:15:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798763873] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:42,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065849578] [2023-09-01 12:15:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:42,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:42,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-09-01 12:15:42,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:42,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:42,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-09-01 12:15:42,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:42,419 INFO L130 PetriNetUnfolder]: 24/74 cut-off events. [2023-09-01 12:15:42,419 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2023-09-01 12:15:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 74 events. 24/74 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 9 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 257. Up to 35 conditions per place. [2023-09-01 12:15:42,420 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 16 selfloop transitions, 1 changer transitions 17/34 dead transitions. [2023-09-01 12:15:42,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 201 flow [2023-09-01 12:15:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:15:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:15:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2023-09-01 12:15:42,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-09-01 12:15:42,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2023-09-01 12:15:42,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2023-09-01 12:15:42,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:42,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2023-09-01 12:15:42,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2023-09-01 12:15:42,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:42,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:42,425 INFO L175 Difference]: Start difference. First operand has 35 places, 18 transitions, 80 flow. Second operand 5 states and 459 transitions. [2023-09-01 12:15:42,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 201 flow [2023-09-01 12:15:42,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 186 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 12:15:42,427 INFO L231 Difference]: Finished difference. Result has 36 places, 16 transitions, 61 flow [2023-09-01 12:15:42,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=36, PETRI_TRANSITIONS=16} [2023-09-01 12:15:42,427 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-09-01 12:15:42,428 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 16 transitions, 61 flow [2023-09-01 12:15:42,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:42,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:42,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:42,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:15:42,428 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)] === [2023-09-01 12:15:42,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1841161101, now seen corresponding path program 5 times [2023-09-01 12:15:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378495278] [2023-09-01 12:15:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:42,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:42,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:42,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378495278] [2023-09-01 12:15:42,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378495278] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:42,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:42,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:42,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041080305] [2023-09-01 12:15:42,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:42,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:42,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-09-01 12:15:42,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 16 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:42,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:42,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-09-01 12:15:42,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:42,792 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-09-01 12:15:42,793 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-09-01 12:15:42,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 40 events. 8/40 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 130. Up to 19 conditions per place. [2023-09-01 12:15:42,793 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 16 selfloop transitions, 1 changer transitions 11/28 dead transitions. [2023-09-01 12:15:42,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 162 flow [2023-09-01 12:15:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:15:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:15:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-09-01 12:15:42,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44509803921568625 [2023-09-01 12:15:42,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-09-01 12:15:42,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-09-01 12:15:42,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:42,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-09-01 12:15:42,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2023-09-01 12:15:42,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:42,798 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:42,798 INFO L175 Difference]: Start difference. First operand has 36 places, 16 transitions, 61 flow. Second operand 5 states and 454 transitions. [2023-09-01 12:15:42,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 162 flow [2023-09-01 12:15:42,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 127 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-09-01 12:15:42,799 INFO L231 Difference]: Finished difference. Result has 30 places, 16 transitions, 49 flow [2023-09-01 12:15:42,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2023-09-01 12:15:42,800 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-09-01 12:15:42,800 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 16 transitions, 49 flow [2023-09-01 12:15:42,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:42,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:42,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:42,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:15:42,801 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)] === [2023-09-01 12:15:42,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash 325050265, now seen corresponding path program 6 times [2023-09-01 12:15:42,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:42,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29389019] [2023-09-01 12:15:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:42,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:43,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:43,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29389019] [2023-09-01 12:15:43,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29389019] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:43,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:43,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 12:15:43,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582458024] [2023-09-01 12:15:43,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:43,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 12:15:43,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 12:15:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 12:15:43,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-09-01 12:15:43,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 16 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:43,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:43,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-09-01 12:15:43,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:43,254 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2023-09-01 12:15:43,254 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 12:15:43,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 28 events. 6/28 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 3 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 77. Up to 15 conditions per place. [2023-09-01 12:15:43,254 INFO L137 encePairwiseOnDemand]: 200/204 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-09-01 12:15:43,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 94 flow [2023-09-01 12:15:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:15:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:15:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2023-09-01 12:15:43,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4362745098039216 [2023-09-01 12:15:43,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2023-09-01 12:15:43,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2023-09-01 12:15:43,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:43,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2023-09-01 12:15:43,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-09-01 12:15:43,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:43,258 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 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) [2023-09-01 12:15:43,258 INFO L175 Difference]: Start difference. First operand has 30 places, 16 transitions, 49 flow. Second operand 5 states and 445 transitions. [2023-09-01 12:15:43,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 94 flow [2023-09-01 12:15:43,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 90 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 12:15:43,259 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-09-01 12:15:43,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-09-01 12:15:43,261 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-09-01 12:15:43,262 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-09-01 12:15:43,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2023-09-01 12:15:43,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 12:15:43,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 12:15:43,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 12:15:43,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 12:15:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:15:43,265 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-09-01 12:15:43,267 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 12:15:43,268 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 12:15:43,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:15:43 BasicIcfg [2023-09-01 12:15:43,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 12:15:43,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 12:15:43,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 12:15:43,270 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 12:15:43,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:15:35" (3/4) ... [2023-09-01 12:15:43,273 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 12:15:43,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 12:15:43,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 12:15:43,276 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 12:15:43,280 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-09-01 12:15:43,280 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 12:15:43,280 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 12:15:43,280 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 12:15:43,310 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 12:15:43,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 12:15:43,310 INFO L158 Benchmark]: Toolchain (without parser) took 8372.96ms. Allocated memory was 81.8MB in the beginning and 224.4MB in the end (delta: 142.6MB). Free memory was 34.4MB in the beginning and 95.9MB in the end (delta: -61.5MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2023-09-01 12:15:43,310 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 81.8MB. Free memory was 59.6MB in the beginning and 59.5MB in the end (delta: 80.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 12:15:43,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.83ms. Allocated memory is still 81.8MB. Free memory was 34.1MB in the beginning and 54.6MB in the end (delta: -20.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-09-01 12:15:43,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.58ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 52.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 12:15:43,311 INFO L158 Benchmark]: Boogie Preprocessor took 19.91ms. Allocated memory is still 81.8MB. Free memory was 52.3MB in the beginning and 50.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 12:15:43,311 INFO L158 Benchmark]: RCFGBuilder took 689.21ms. Allocated memory was 81.8MB in the beginning and 117.4MB in the end (delta: 35.7MB). Free memory was 50.5MB in the beginning and 78.3MB in the end (delta: -27.8MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-09-01 12:15:43,311 INFO L158 Benchmark]: TraceAbstraction took 7391.54ms. Allocated memory was 117.4MB in the beginning and 224.4MB in the end (delta: 107.0MB). Free memory was 77.7MB in the beginning and 99.0MB in the end (delta: -21.3MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. [2023-09-01 12:15:43,311 INFO L158 Benchmark]: Witness Printer took 39.67ms. Allocated memory is still 224.4MB. Free memory was 99.0MB in the beginning and 95.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 12:15:43,313 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 81.8MB. Free memory was 59.6MB in the beginning and 59.5MB in the end (delta: 80.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.83ms. Allocated memory is still 81.8MB. Free memory was 34.1MB in the beginning and 54.6MB in the end (delta: -20.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.58ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 52.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.91ms. Allocated memory is still 81.8MB. Free memory was 52.3MB in the beginning and 50.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 689.21ms. Allocated memory was 81.8MB in the beginning and 117.4MB in the end (delta: 35.7MB). Free memory was 50.5MB in the beginning and 78.3MB in the end (delta: -27.8MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7391.54ms. Allocated memory was 117.4MB in the beginning and 224.4MB in the end (delta: 107.0MB). Free memory was 77.7MB in the beginning and 99.0MB in the end (delta: -21.3MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. * Witness Printer took 39.67ms. Allocated memory is still 224.4MB. Free memory was 99.0MB in the beginning and 95.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 110 PlacesBefore, 26 PlacesAfterwards, 101 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 90 TotalNumberOfCompositions, 405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 405, independent: 405, independent conditional: 0, independent unconditional: 405, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 151, independent: 151, independent conditional: 0, independent unconditional: 151, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 405, independent: 254, independent conditional: 0, independent unconditional: 254, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 151, unknown conditional: 0, unknown unconditional: 151] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 129 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: 7.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 267 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 788 IncrementalHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 40 mSDtfsCounter, 788 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 1564 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 12:15:43,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE