./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/weaver/test-easy6.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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:17:13,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:17:13,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:17:13,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:17:13,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:17:13,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:17:13,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:17:13,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:17:13,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:17:13,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:17:13,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:17:13,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:17:13,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:17:13,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:17:13,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:17:13,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:17:13,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:17:13,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:17:13,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:17:13,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:17:13,410 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:17:13,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:17:13,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:17:13,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:17:13,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:17:13,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:17:13,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:17:13,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:17:13,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:17:13,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:17:13,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:17:13,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:17:13,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:17:13,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:17:13,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:17:13,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:17:13,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:17:13,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:17:13,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:17:13,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:17:13,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:17:13,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:17:13,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:17:13,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:17:13,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:17:13,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:17:13,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:17:13,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:17:13,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:17:13,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:17:13,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:17:13,468 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:17:13,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:17:13,469 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:17:13,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:17:13,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:17:13,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:17:13,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:17:13,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:17:13,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:17:13,470 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:17:13,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:17:13,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:17:13,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:17:13,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:17:13,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:17:13,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:17:13,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:17:13,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:17:13,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:17:13,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:17:13,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:17:13,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:17:13,473 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:17:13,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:17:13,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:17:13,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-07-21 09:17:13,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:17:13,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:17:13,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:17:13,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:17:13,819 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:17:13,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-07-21 09:17:13,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e149fc3bb/f64ea5c47b9948109c438f1e396f1cb6/FLAGda7224510 [2022-07-21 09:17:14,295 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:17:14,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-07-21 09:17:14,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e149fc3bb/f64ea5c47b9948109c438f1e396f1cb6/FLAGda7224510 [2022-07-21 09:17:14,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e149fc3bb/f64ea5c47b9948109c438f1e396f1cb6 [2022-07-21 09:17:14,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:17:14,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:17:14,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:17:14,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:17:14,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:17:14,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:14,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2ef6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14, skipping insertion in model container [2022-07-21 09:17:14,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:14,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:17:14,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:17:14,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-07-21 09:17:14,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:17:14,866 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:17:14,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c[3046,3059] [2022-07-21 09:17:14,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:17:14,954 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:17:14,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14 WrapperNode [2022-07-21 09:17:14,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:17:14,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:17:14,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:17:14,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:17:14,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:14,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:14,998 INFO L137 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2022-07-21 09:17:14,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:17:14,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:17:14,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:17:14,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:17:15,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:17:15,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:17:15,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:17:15,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:17:15,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (1/1) ... [2022-07-21 09:17:15,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:17:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:17:15,068 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) [2022-07-21 09:17:15,083 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 [2022-07-21 09:17:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:17:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:17:15,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:17:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:17:15,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:17:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:17:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:17:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:17:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 09:17:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 09:17:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:17:15,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:17:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:17:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:17:15,115 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:17:15,207 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:17:15,209 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:17:15,422 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:17:15,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:17:15,486 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:17:15,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:17:15 BoogieIcfgContainer [2022-07-21 09:17:15,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:17:15,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:17:15,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:17:15,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:17:15,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:17:14" (1/3) ... [2022-07-21 09:17:15,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2362d1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:17:15, skipping insertion in model container [2022-07-21 09:17:15,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:17:14" (2/3) ... [2022-07-21 09:17:15,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2362d1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:17:15, skipping insertion in model container [2022-07-21 09:17:15,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:17:15" (3/3) ... [2022-07-21 09:17:15,498 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-07-21 09:17:15,503 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:17:15,512 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:17:15,512 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:17:15,512 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:17:15,577 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-21 09:17:15,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 182 flow [2022-07-21 09:17:15,685 INFO L129 PetriNetUnfolder]: 1/81 cut-off events. [2022-07-21 09:17:15,686 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:17:15,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 1/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-07-21 09:17:15,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 83 transitions, 182 flow [2022-07-21 09:17:15,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 72 transitions, 156 flow [2022-07-21 09:17:15,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:17:15,715 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f929375, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4cd52049 [2022-07-21 09:17:15,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 09:17:15,744 INFO L129 PetriNetUnfolder]: 1/71 cut-off events. [2022-07-21 09:17:15,744 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 09:17:15,744 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:15,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:15,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:17:15,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:15,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1443793135, now seen corresponding path program 1 times [2022-07-21 09:17:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:15,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375032590] [2022-07-21 09:17:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375032590] [2022-07-21 09:17:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375032590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:16,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:16,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:17:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7671727] [2022-07-21 09:17:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:16,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:17:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:17:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:17:16,258 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-07-21 09:17:16,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-07-21 09:17:16,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:16,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-07-21 09:17:16,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:16,487 INFO L129 PetriNetUnfolder]: 22/202 cut-off events. [2022-07-21 09:17:16,488 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-07-21 09:17:16,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 202 events. 22/202 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 715 event pairs, 12 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 186. Up to 33 conditions per place. [2022-07-21 09:17:16,491 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 31 selfloop transitions, 7 changer transitions 13/102 dead transitions. [2022-07-21 09:17:16,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 102 transitions, 339 flow [2022-07-21 09:17:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:17:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 09:17:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2022-07-21 09:17:16,506 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7868396663577386 [2022-07-21 09:17:16,507 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2022-07-21 09:17:16,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2022-07-21 09:17:16,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:16,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2022-07-21 09:17:16,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 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) [2022-07-21 09:17:16,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2022-07-21 09:17:16,524 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2022-07-21 09:17:16,526 INFO L186 Difference]: Start difference. First operand has 78 places, 72 transitions, 156 flow. Second operand 13 states and 849 transitions. [2022-07-21 09:17:16,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 102 transitions, 339 flow [2022-07-21 09:17:16,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 317 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 09:17:16,541 INFO L242 Difference]: Finished difference. Result has 91 places, 74 transitions, 185 flow [2022-07-21 09:17:16,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=185, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2022-07-21 09:17:16,546 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2022-07-21 09:17:16,546 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 185 flow [2022-07-21 09:17:16,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-07-21 09:17:16,547 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:16,547 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:16,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:17:16,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:17:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash 187280513, now seen corresponding path program 2 times [2022-07-21 09:17:16,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:16,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424419765] [2022-07-21 09:17:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:16,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:16,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:16,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424419765] [2022-07-21 09:17:16,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424419765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:16,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:16,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:17:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708602079] [2022-07-21 09:17:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:16,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:17:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:17:16,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:17:16,701 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-21 09:17:16,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 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) [2022-07-21 09:17:16,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:16,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-21 09:17:16,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:16,931 INFO L129 PetriNetUnfolder]: 64/401 cut-off events. [2022-07-21 09:17:16,931 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-07-21 09:17:16,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 401 events. 64/401 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2118 event pairs, 7 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 628. Up to 36 conditions per place. [2022-07-21 09:17:16,936 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 30 selfloop transitions, 12 changer transitions 9/107 dead transitions. [2022-07-21 09:17:16,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 357 flow [2022-07-21 09:17:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:17:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:17:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 619 transitions. [2022-07-21 09:17:16,939 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8286479250334672 [2022-07-21 09:17:16,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 619 transitions. [2022-07-21 09:17:16,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 619 transitions. [2022-07-21 09:17:16,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:16,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 619 transitions. [2022-07-21 09:17:16,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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) [2022-07-21 09:17:16,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-07-21 09:17:16,944 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-07-21 09:17:16,944 INFO L186 Difference]: Start difference. First operand has 91 places, 74 transitions, 185 flow. Second operand 9 states and 619 transitions. [2022-07-21 09:17:16,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 357 flow [2022-07-21 09:17:16,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 349 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-21 09:17:16,950 INFO L242 Difference]: Finished difference. Result has 93 places, 82 transitions, 253 flow [2022-07-21 09:17:16,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=253, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2022-07-21 09:17:16,951 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2022-07-21 09:17:16,951 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 253 flow [2022-07-21 09:17:16,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 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) [2022-07-21 09:17:16,951 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:16,952 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:16,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:17:16,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:17:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:16,953 INFO L85 PathProgramCache]: Analyzing trace with hash 230641, now seen corresponding path program 3 times [2022-07-21 09:17:16,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:16,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131726713] [2022-07-21 09:17:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:17,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:17,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131726713] [2022-07-21 09:17:17,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131726713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:17,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:17,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:17:17,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401459940] [2022-07-21 09:17:17,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:17,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:17:17,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:17:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:17:17,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-07-21 09:17:17,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 253 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-07-21 09:17:17,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:17,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-07-21 09:17:17,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:17,332 INFO L129 PetriNetUnfolder]: 53/356 cut-off events. [2022-07-21 09:17:17,333 INFO L130 PetriNetUnfolder]: For 156/158 co-relation queries the response was YES. [2022-07-21 09:17:17,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 356 events. 53/356 cut-off events. For 156/158 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1838 event pairs, 25 based on Foata normal form. 3/353 useless extension candidates. Maximal degree in co-relation 618. Up to 64 conditions per place. [2022-07-21 09:17:17,337 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 21 selfloop transitions, 6 changer transitions 13/99 dead transitions. [2022-07-21 09:17:17,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 375 flow [2022-07-21 09:17:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:17:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:17:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 651 transitions. [2022-07-21 09:17:17,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7843373493975904 [2022-07-21 09:17:17,341 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 651 transitions. [2022-07-21 09:17:17,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 651 transitions. [2022-07-21 09:17:17,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:17,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 651 transitions. [2022-07-21 09:17:17,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 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) [2022-07-21 09:17:17,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-07-21 09:17:17,346 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-07-21 09:17:17,346 INFO L186 Difference]: Start difference. First operand has 93 places, 82 transitions, 253 flow. Second operand 10 states and 651 transitions. [2022-07-21 09:17:17,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 375 flow [2022-07-21 09:17:17,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 370 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-21 09:17:17,353 INFO L242 Difference]: Finished difference. Result has 101 places, 80 transitions, 257 flow [2022-07-21 09:17:17,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=257, PETRI_PLACES=101, PETRI_TRANSITIONS=80} [2022-07-21 09:17:17,355 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2022-07-21 09:17:17,356 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 80 transitions, 257 flow [2022-07-21 09:17:17,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-07-21 09:17:17,356 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:17,357 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:17:17,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:17:17,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:17,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1319518781, now seen corresponding path program 4 times [2022-07-21 09:17:17,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:17,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059846916] [2022-07-21 09:17:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:17,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:17,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059846916] [2022-07-21 09:17:17,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059846916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:17,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:17,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:17:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665651261] [2022-07-21 09:17:17,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:17:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:17,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:17:17,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:17:17,514 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-21 09:17:17,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 80 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-07-21 09:17:17,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:17,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-21 09:17:17,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:17,708 INFO L129 PetriNetUnfolder]: 51/372 cut-off events. [2022-07-21 09:17:17,708 INFO L130 PetriNetUnfolder]: For 256/270 co-relation queries the response was YES. [2022-07-21 09:17:17,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 372 events. 51/372 cut-off events. For 256/270 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1971 event pairs, 5 based on Foata normal form. 17/385 useless extension candidates. Maximal degree in co-relation 736. Up to 31 conditions per place. [2022-07-21 09:17:17,710 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 28 selfloop transitions, 14 changer transitions 12/108 dead transitions. [2022-07-21 09:17:17,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 464 flow [2022-07-21 09:17:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:17:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:17:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 684 transitions. [2022-07-21 09:17:17,713 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8240963855421687 [2022-07-21 09:17:17,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 684 transitions. [2022-07-21 09:17:17,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 684 transitions. [2022-07-21 09:17:17,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:17,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 684 transitions. [2022-07-21 09:17:17,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 68.4) internal successors, (684), 10 states have internal predecessors, (684), 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) [2022-07-21 09:17:17,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-07-21 09:17:17,717 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-07-21 09:17:17,718 INFO L186 Difference]: Start difference. First operand has 101 places, 80 transitions, 257 flow. Second operand 10 states and 684 transitions. [2022-07-21 09:17:17,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 464 flow [2022-07-21 09:17:17,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 445 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-07-21 09:17:17,722 INFO L242 Difference]: Finished difference. Result has 99 places, 80 transitions, 276 flow [2022-07-21 09:17:17,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2022-07-21 09:17:17,723 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2022-07-21 09:17:17,723 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 276 flow [2022-07-21 09:17:17,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-07-21 09:17:17,723 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:17,724 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:17,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:17:17,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:17:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash -139266029, now seen corresponding path program 5 times [2022-07-21 09:17:17,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:17,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159140676] [2022-07-21 09:17:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:17,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:17,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159140676] [2022-07-21 09:17:17,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159140676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:17,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:17,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:17:17,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010122367] [2022-07-21 09:17:17,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:17,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:17:17,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:17:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:17:17,838 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-21 09:17:17,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 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) [2022-07-21 09:17:17,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:17,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-21 09:17:17,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:17,948 INFO L129 PetriNetUnfolder]: 38/231 cut-off events. [2022-07-21 09:17:17,949 INFO L130 PetriNetUnfolder]: For 225/235 co-relation queries the response was YES. [2022-07-21 09:17:17,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 231 events. 38/231 cut-off events. For 225/235 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 887 event pairs, 7 based on Foata normal form. 13/240 useless extension candidates. Maximal degree in co-relation 457. Up to 31 conditions per place. [2022-07-21 09:17:17,950 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 15 selfloop transitions, 8 changer transitions 14/91 dead transitions. [2022-07-21 09:17:17,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 373 flow [2022-07-21 09:17:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:17:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:17:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 604 transitions. [2022-07-21 09:17:17,952 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8085676037483266 [2022-07-21 09:17:17,953 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 604 transitions. [2022-07-21 09:17:17,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 604 transitions. [2022-07-21 09:17:17,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:17,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 604 transitions. [2022-07-21 09:17:17,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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) [2022-07-21 09:17:17,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-07-21 09:17:17,971 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-07-21 09:17:17,972 INFO L186 Difference]: Start difference. First operand has 99 places, 80 transitions, 276 flow. Second operand 9 states and 604 transitions. [2022-07-21 09:17:17,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 373 flow [2022-07-21 09:17:17,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 320 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-07-21 09:17:17,975 INFO L242 Difference]: Finished difference. Result has 94 places, 74 transitions, 211 flow [2022-07-21 09:17:17,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=211, PETRI_PLACES=94, PETRI_TRANSITIONS=74} [2022-07-21 09:17:17,976 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2022-07-21 09:17:17,976 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 211 flow [2022-07-21 09:17:17,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 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) [2022-07-21 09:17:17,977 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:17,977 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:17:17,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:17:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -712853443, now seen corresponding path program 6 times [2022-07-21 09:17:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:17,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910742336] [2022-07-21 09:17:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:18,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:18,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910742336] [2022-07-21 09:17:18,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910742336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:18,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:18,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:17:18,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372586764] [2022-07-21 09:17:18,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:18,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:17:18,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:17:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:17:18,031 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2022-07-21 09:17:18,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2022-07-21 09:17:18,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:18,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2022-07-21 09:17:18,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:18,057 INFO L129 PetriNetUnfolder]: 9/141 cut-off events. [2022-07-21 09:17:18,057 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-07-21 09:17:18,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 141 events. 9/141 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 331 event pairs, 6 based on Foata normal form. 1/140 useless extension candidates. Maximal degree in co-relation 147. Up to 26 conditions per place. [2022-07-21 09:17:18,058 INFO L132 encePairwiseOnDemand]: 80/83 looper letters, 10 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-07-21 09:17:18,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 238 flow [2022-07-21 09:17:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:17:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 09:17:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2022-07-21 09:17:18,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8955823293172691 [2022-07-21 09:17:18,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2022-07-21 09:17:18,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2022-07-21 09:17:18,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:18,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2022-07-21 09:17:18,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2022-07-21 09:17:18,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2022-07-21 09:17:18,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2022-07-21 09:17:18,062 INFO L186 Difference]: Start difference. First operand has 94 places, 74 transitions, 211 flow. Second operand 3 states and 223 transitions. [2022-07-21 09:17:18,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 238 flow [2022-07-21 09:17:18,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 211 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-07-21 09:17:18,065 INFO L242 Difference]: Finished difference. Result has 85 places, 74 transitions, 192 flow [2022-07-21 09:17:18,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2022-07-21 09:17:18,068 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2022-07-21 09:17:18,068 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 192 flow [2022-07-21 09:17:18,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2022-07-21 09:17:18,072 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:17:18,072 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:17:18,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:17:18,072 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 09:17:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:17:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1141376561, now seen corresponding path program 7 times [2022-07-21 09:17:18,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:17:18,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126414046] [2022-07-21 09:17:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:17:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:17:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:17:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:17:18,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:17:18,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126414046] [2022-07-21 09:17:18,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126414046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:17:18,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:17:18,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:17:18,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898893700] [2022-07-21 09:17:18,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:17:18,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:17:18,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:17:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:17:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:17:18,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-21 09:17:18,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 192 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-07-21 09:17:18,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:17:18,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-21 09:17:18,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:17:18,284 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2022-07-21 09:17:18,284 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-21 09:17:18,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 80 events. 7/80 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 3 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 99. Up to 10 conditions per place. [2022-07-21 09:17:18,284 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2022-07-21 09:17:18,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 183 flow [2022-07-21 09:17:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:17:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 09:17:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 524 transitions. [2022-07-21 09:17:18,287 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7891566265060241 [2022-07-21 09:17:18,287 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 524 transitions. [2022-07-21 09:17:18,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 524 transitions. [2022-07-21 09:17:18,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:17:18,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 524 transitions. [2022-07-21 09:17:18,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.5) internal successors, (524), 8 states have internal predecessors, (524), 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) [2022-07-21 09:17:18,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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) [2022-07-21 09:17:18,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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) [2022-07-21 09:17:18,290 INFO L186 Difference]: Start difference. First operand has 85 places, 74 transitions, 192 flow. Second operand 8 states and 524 transitions. [2022-07-21 09:17:18,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 183 flow [2022-07-21 09:17:18,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 172 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-07-21 09:17:18,291 INFO L242 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2022-07-21 09:17:18,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2022-07-21 09:17:18,292 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2022-07-21 09:17:18,293 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2022-07-21 09:17:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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) [2022-07-21 09:17:18,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-21 09:17:18,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-21 09:17:18,296 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-21 09:17:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:17:18,296 INFO L356 BasicCegarLoop]: Path program histogram: [7] [2022-07-21 09:17:18,299 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 09:17:18,299 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 09:17:18,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 09:17:18 BasicIcfg [2022-07-21 09:17:18,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 09:17:18,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 09:17:18,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 09:17:18,304 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 09:17:18,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:17:15" (3/4) ... [2022-07-21 09:17:18,306 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 09:17:18,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-21 09:17:18,311 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-21 09:17:18,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-21 09:17:18,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 09:17:18,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 09:17:18,314 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 09:17:18,338 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 09:17:18,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 09:17:18,339 INFO L158 Benchmark]: Toolchain (without parser) took 3625.50ms. Allocated memory was 56.6MB in the beginning and 100.7MB in the end (delta: 44.0MB). Free memory was 35.8MB in the beginning and 56.0MB in the end (delta: -20.2MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2022-07-21 09:17:18,340 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:17:18,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.68ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 09:17:18,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.27ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 38.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:17:18,340 INFO L158 Benchmark]: Boogie Preprocessor took 38.19ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 36.7MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 09:17:18,341 INFO L158 Benchmark]: RCFGBuilder took 451.57ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 36.7MB in the beginning and 48.4MB in the end (delta: -11.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-07-21 09:17:18,341 INFO L158 Benchmark]: TraceAbstraction took 2812.37ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 47.8MB in the beginning and 59.2MB in the end (delta: -11.3MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-07-21 09:17:18,341 INFO L158 Benchmark]: Witness Printer took 35.26ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 56.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 09:17:18,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 39.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.68ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.27ms. Allocated memory is still 56.6MB. Free memory was 39.7MB in the beginning and 38.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.19ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 36.7MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 451.57ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 36.7MB in the beginning and 48.4MB in the end (delta: -11.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2812.37ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 47.8MB in the beginning and 59.2MB in the end (delta: -11.3MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * Witness Printer took 35.26ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 56.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 116]: 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 5 procedures, 109 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 283 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 283 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 423 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 714 IncrementalHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 58 mSDtfsCounter, 714 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=4, InterpolantAutomatonStates: 62, 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, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 1497 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2022-07-21 09:17:18,370 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