./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 eb692b52 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-?-eb692b5 [2022-07-19 21:44:37,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:44:37,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:44:38,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:44:38,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:44:38,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:44:38,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:44:38,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:44:38,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:44:38,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:44:38,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:44:38,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:44:38,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:44:38,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:44:38,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:44:38,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:44:38,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:44:38,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:44:38,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:44:38,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:44:38,040 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:44:38,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:44:38,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:44:38,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:44:38,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:44:38,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:44:38,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:44:38,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:44:38,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:44:38,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:44:38,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:44:38,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:44:38,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:44:38,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:44:38,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:44:38,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:44:38,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:44:38,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:44:38,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:44:38,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:44:38,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:44:38,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:44:38,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:44:38,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:44:38,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:44:38,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:44:38,081 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:44:38,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:44:38,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:44:38,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:44:38,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:44:38,083 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:44:38,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:44:38,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:44:38,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:44:38,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:44:38,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:44:38,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:44:38,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:44:38,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:44:38,085 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:44:38,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:44:38,087 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:44:38,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:44:38,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:44:38,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:44:38,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:44:38,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:44:38,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:44:38,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:44:38,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:44:38,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:44:38,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:44:38,089 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:44:38,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:44:38,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:44:38,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e [2022-07-19 21:44:38,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:44:38,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:44:38,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:44:38,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:44:38,344 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:44:38,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-07-19 21:44:38,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4367ce584/db5ebb0444e44122ba684eb20a7900da/FLAG585686ba4 [2022-07-19 21:44:38,857 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:44:38,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy6.wvr.c [2022-07-19 21:44:38,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4367ce584/db5ebb0444e44122ba684eb20a7900da/FLAG585686ba4 [2022-07-19 21:44:38,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4367ce584/db5ebb0444e44122ba684eb20a7900da [2022-07-19 21:44:38,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:44:38,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:44:38,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:44:38,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:44:38,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:44:38,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:38" (1/1) ... [2022-07-19 21:44:38,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790cc1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:38, skipping insertion in model container [2022-07-19 21:44:38,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:38" (1/1) ... [2022-07-19 21:44:38,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:44:38,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:44:39,150 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] [2022-07-19 21:44:39,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:44:39,162 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:44:39,187 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] [2022-07-19 21:44:39,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:44:39,202 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:44:39,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39 WrapperNode [2022-07-19 21:44:39,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:44:39,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:44:39,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:44:39,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:44:39,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,240 INFO L137 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2022-07-19 21:44:39,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:44:39,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:44:39,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:44:39,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:44:39,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:44:39,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:44:39,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:44:39,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:44:39,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (1/1) ... [2022-07-19 21:44:39,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:44:39,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:44:39,297 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) [2022-07-19 21:44:39,303 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 [2022-07-19 21:44:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:44:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:44:39,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:44:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:44:39,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:44:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:44:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:44:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:44:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-19 21:44:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-19 21:44:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:44:39,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:44:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:44:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:44:39,335 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:44:39,392 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:44:39,393 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:44:39,561 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:44:39,636 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:44:39,637 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:44:39,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:39 BoogieIcfgContainer [2022-07-19 21:44:39,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:44:39,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:44:39,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:44:39,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:44:39,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:44:38" (1/3) ... [2022-07-19 21:44:39,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697b449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:39, skipping insertion in model container [2022-07-19 21:44:39,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:39" (2/3) ... [2022-07-19 21:44:39,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697b449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:39, skipping insertion in model container [2022-07-19 21:44:39,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:39" (3/3) ... [2022-07-19 21:44:39,653 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-07-19 21:44:39,658 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:44:39,665 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:44:39,665 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:44:39,665 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:44:39,718 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:44:39,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 182 flow [2022-07-19 21:44:39,831 INFO L129 PetriNetUnfolder]: 1/81 cut-off events. [2022-07-19 21:44:39,832 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:44:39,834 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. [2022-07-19 21:44:39,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 83 transitions, 182 flow [2022-07-19 21:44:39,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 72 transitions, 156 flow [2022-07-19 21:44:39,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:44:39,861 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@4c5a4531, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@21ea50b5 [2022-07-19 21:44:39,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:44:39,892 INFO L129 PetriNetUnfolder]: 1/71 cut-off events. [2022-07-19 21:44:39,892 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:44:39,893 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:44:39,893 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] [2022-07-19 21:44:39,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:44:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:44:39,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1443793135, now seen corresponding path program 1 times [2022-07-19 21:44:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:44:39,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360624253] [2022-07-19 21:44:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:44:39,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:44:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:44:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:44:40,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:44:40,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360624253] [2022-07-19 21:44:40,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360624253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:44:40,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:44:40,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:44:40,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185572633] [2022-07-19 21:44:40,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:44:40,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:44:40,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:44:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:44:40,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:44:40,416 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-07-19 21:44:40,419 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) [2022-07-19 21:44:40,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:44:40,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-07-19 21:44:40,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:44:40,641 INFO L129 PetriNetUnfolder]: 22/202 cut-off events. [2022-07-19 21:44:40,641 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-07-19 21:44:40,643 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. [2022-07-19 21:44:40,645 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 31 selfloop transitions, 7 changer transitions 13/102 dead transitions. [2022-07-19 21:44:40,645 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 102 transitions, 339 flow [2022-07-19 21:44:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:44:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-19 21:44:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2022-07-19 21:44:40,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7868396663577386 [2022-07-19 21:44:40,661 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2022-07-19 21:44:40,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2022-07-19 21:44:40,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:44:40,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2022-07-19 21:44:40,673 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) [2022-07-19 21:44:40,689 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) [2022-07-19 21:44:40,690 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) [2022-07-19 21:44:40,692 INFO L186 Difference]: Start difference. First operand has 78 places, 72 transitions, 156 flow. Second operand 13 states and 849 transitions. [2022-07-19 21:44:40,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 102 transitions, 339 flow [2022-07-19 21:44:40,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 317 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:44:40,699 INFO L242 Difference]: Finished difference. Result has 91 places, 74 transitions, 185 flow [2022-07-19 21:44:40,701 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} [2022-07-19 21:44:40,703 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2022-07-19 21:44:40,704 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 185 flow [2022-07-19 21:44:40,704 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) [2022-07-19 21:44:40,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:44:40,705 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] [2022-07-19 21:44:40,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:44:40,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:44:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:44:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash 187280513, now seen corresponding path program 2 times [2022-07-19 21:44:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:44:40,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871978664] [2022-07-19 21:44:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:44:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:44:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:44:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:44:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:44:40,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871978664] [2022-07-19 21:44:40,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871978664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:44:40,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:44:40,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:44:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137679754] [2022-07-19 21:44:40,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:44:40,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:44:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:44:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:44:40,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:44:40,838 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-19 21:44:40,839 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) [2022-07-19 21:44:40,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:44:40,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-19 21:44:40,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:44:41,030 INFO L129 PetriNetUnfolder]: 64/401 cut-off events. [2022-07-19 21:44:41,030 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-07-19 21:44:41,032 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. [2022-07-19 21:44:41,033 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 30 selfloop transitions, 12 changer transitions 9/107 dead transitions. [2022-07-19 21:44:41,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 357 flow [2022-07-19 21:44:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:44:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:44:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 619 transitions. [2022-07-19 21:44:41,036 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8286479250334672 [2022-07-19 21:44:41,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 619 transitions. [2022-07-19 21:44:41,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 619 transitions. [2022-07-19 21:44:41,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:44:41,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 619 transitions. [2022-07-19 21:44:41,038 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) [2022-07-19 21:44:41,040 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) [2022-07-19 21:44:41,041 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) [2022-07-19 21:44:41,041 INFO L186 Difference]: Start difference. First operand has 91 places, 74 transitions, 185 flow. Second operand 9 states and 619 transitions. [2022-07-19 21:44:41,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 357 flow [2022-07-19 21:44:41,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 349 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-07-19 21:44:41,045 INFO L242 Difference]: Finished difference. Result has 93 places, 82 transitions, 253 flow [2022-07-19 21:44:41,046 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} [2022-07-19 21:44:41,046 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2022-07-19 21:44:41,046 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 253 flow [2022-07-19 21:44:41,047 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) [2022-07-19 21:44:41,047 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:44:41,047 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] [2022-07-19 21:44:41,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:44:41,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:44:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:44:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash 230641, now seen corresponding path program 3 times [2022-07-19 21:44:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:44:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116753252] [2022-07-19 21:44:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:44:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:44:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:44:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:44:41,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:44:41,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116753252] [2022-07-19 21:44:41,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116753252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:44:41,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:44:41,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:44:41,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509058385] [2022-07-19 21:44:41,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:44:41,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:44:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:44:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:44:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:44:41,178 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 83 [2022-07-19 21:44:41,179 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) [2022-07-19 21:44:41,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:44:41,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 83 [2022-07-19 21:44:41,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:44:41,348 INFO L129 PetriNetUnfolder]: 53/356 cut-off events. [2022-07-19 21:44:41,348 INFO L130 PetriNetUnfolder]: For 156/158 co-relation queries the response was YES. [2022-07-19 21:44:41,350 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. [2022-07-19 21:44:41,351 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 21 selfloop transitions, 6 changer transitions 13/99 dead transitions. [2022-07-19 21:44:41,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 375 flow [2022-07-19 21:44:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:44:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:44:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 651 transitions. [2022-07-19 21:44:41,354 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7843373493975904 [2022-07-19 21:44:41,354 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 651 transitions. [2022-07-19 21:44:41,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 651 transitions. [2022-07-19 21:44:41,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:44:41,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 651 transitions. [2022-07-19 21:44:41,357 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) [2022-07-19 21:44:41,358 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) [2022-07-19 21:44:41,359 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) [2022-07-19 21:44:41,359 INFO L186 Difference]: Start difference. First operand has 93 places, 82 transitions, 253 flow. Second operand 10 states and 651 transitions. [2022-07-19 21:44:41,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 375 flow [2022-07-19 21:44:41,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 99 transitions, 370 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-19 21:44:41,364 INFO L242 Difference]: Finished difference. Result has 101 places, 80 transitions, 257 flow [2022-07-19 21:44:41,364 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} [2022-07-19 21:44:41,365 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2022-07-19 21:44:41,365 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 80 transitions, 257 flow [2022-07-19 21:44:41,366 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) [2022-07-19 21:44:41,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:44:41,366 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] [2022-07-19 21:44:41,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:44:41,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:44:41,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:44:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1319518781, now seen corresponding path program 4 times [2022-07-19 21:44:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:44:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392560212] [2022-07-19 21:44:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:44:41,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:44:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:44:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:44:41,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:44:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392560212] [2022-07-19 21:44:41,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392560212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:44:41,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:44:41,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:44:41,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805113431] [2022-07-19 21:44:41,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:44:41,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:44:41,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:44:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:44:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:44:41,485 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-19 21:44:41,486 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) [2022-07-19 21:44:41,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:44:41,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-19 21:44:41,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:44:41,699 INFO L129 PetriNetUnfolder]: 51/372 cut-off events. [2022-07-19 21:44:41,699 INFO L130 PetriNetUnfolder]: For 256/270 co-relation queries the response was YES. [2022-07-19 21:44:41,701 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. [2022-07-19 21:44:41,702 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 28 selfloop transitions, 14 changer transitions 12/108 dead transitions. [2022-07-19 21:44:41,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 464 flow [2022-07-19 21:44:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:44:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:44:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 684 transitions. [2022-07-19 21:44:41,705 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8240963855421687 [2022-07-19 21:44:41,705 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 684 transitions. [2022-07-19 21:44:41,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 684 transitions. [2022-07-19 21:44:41,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:44:41,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 684 transitions. [2022-07-19 21:44:41,711 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) [2022-07-19 21:44:41,713 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) [2022-07-19 21:44:41,714 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) [2022-07-19 21:44:41,714 INFO L186 Difference]: Start difference. First operand has 101 places, 80 transitions, 257 flow. Second operand 10 states and 684 transitions. [2022-07-19 21:44:41,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 464 flow [2022-07-19 21:44:41,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 445 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-07-19 21:44:41,721 INFO L242 Difference]: Finished difference. Result has 99 places, 80 transitions, 276 flow [2022-07-19 21:44:41,721 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} [2022-07-19 21:44:41,722 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2022-07-19 21:44:41,723 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 276 flow [2022-07-19 21:44:41,724 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) [2022-07-19 21:44:41,724 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:44:41,725 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] [2022-07-19 21:44:41,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:44:41,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:44:41,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:44:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -139266029, now seen corresponding path program 5 times [2022-07-19 21:44:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:44:41,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457535917] [2022-07-19 21:44:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:44:41,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:44:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:44:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:44:41,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:44:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457535917] [2022-07-19 21:44:41,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457535917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:44:41,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:44:41,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:44:41,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491466163] [2022-07-19 21:44:41,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:44:41,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:44:41,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:44:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:44:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:44:41,840 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-19 21:44:41,841 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) [2022-07-19 21:44:41,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:44:41,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-19 21:44:41,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:44:41,955 INFO L129 PetriNetUnfolder]: 38/231 cut-off events. [2022-07-19 21:44:41,956 INFO L130 PetriNetUnfolder]: For 225/235 co-relation queries the response was YES. [2022-07-19 21:44:41,956 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. [2022-07-19 21:44:41,957 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 15 selfloop transitions, 8 changer transitions 14/91 dead transitions. [2022-07-19 21:44:41,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 373 flow [2022-07-19 21:44:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:44:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:44:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 604 transitions. [2022-07-19 21:44:41,959 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8085676037483266 [2022-07-19 21:44:41,960 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 604 transitions. [2022-07-19 21:44:41,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 604 transitions. [2022-07-19 21:44:41,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:44:41,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 604 transitions. [2022-07-19 21:44:41,962 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) [2022-07-19 21:44:41,963 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) [2022-07-19 21:44:41,963 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) [2022-07-19 21:44:41,964 INFO L186 Difference]: Start difference. First operand has 99 places, 80 transitions, 276 flow. Second operand 9 states and 604 transitions. [2022-07-19 21:44:41,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 373 flow [2022-07-19 21:44:41,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 320 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-07-19 21:44:41,967 INFO L242 Difference]: Finished difference. Result has 94 places, 74 transitions, 211 flow [2022-07-19 21:44:41,967 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} [2022-07-19 21:44:41,968 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2022-07-19 21:44:41,968 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 211 flow [2022-07-19 21:44:41,968 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) [2022-07-19 21:44:41,968 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:44:41,969 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] [2022-07-19 21:44:41,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:44:41,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:44:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:44:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash -712853443, now seen corresponding path program 6 times [2022-07-19 21:44:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:44:41,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612897220] [2022-07-19 21:44:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:44:41,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:44:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:44:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:44:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:44:42,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612897220] [2022-07-19 21:44:42,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612897220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:44:42,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:44:42,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:44:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262520700] [2022-07-19 21:44:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:44:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:44:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:44:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:44:42,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:44:42,019 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2022-07-19 21:44:42,020 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) [2022-07-19 21:44:42,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:44:42,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2022-07-19 21:44:42,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:44:42,049 INFO L129 PetriNetUnfolder]: 9/141 cut-off events. [2022-07-19 21:44:42,049 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-07-19 21:44:42,049 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. [2022-07-19 21:44:42,050 INFO L132 encePairwiseOnDemand]: 80/83 looper letters, 10 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-07-19 21:44:42,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 238 flow [2022-07-19 21:44:42,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:44:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:44:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2022-07-19 21:44:42,052 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8955823293172691 [2022-07-19 21:44:42,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2022-07-19 21:44:42,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2022-07-19 21:44:42,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:44:42,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2022-07-19 21:44:42,053 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) [2022-07-19 21:44:42,054 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) [2022-07-19 21:44:42,054 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) [2022-07-19 21:44:42,054 INFO L186 Difference]: Start difference. First operand has 94 places, 74 transitions, 211 flow. Second operand 3 states and 223 transitions. [2022-07-19 21:44:42,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 238 flow [2022-07-19 21:44:42,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 211 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-07-19 21:44:42,058 INFO L242 Difference]: Finished difference. Result has 85 places, 74 transitions, 192 flow [2022-07-19 21:44:42,058 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} [2022-07-19 21:44:42,060 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2022-07-19 21:44:42,060 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 192 flow [2022-07-19 21:44:42,060 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) [2022-07-19 21:44:42,060 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:44:42,060 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] [2022-07-19 21:44:42,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:44:42,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:44:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:44:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1141376561, now seen corresponding path program 7 times [2022-07-19 21:44:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:44:42,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939834482] [2022-07-19 21:44:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:44:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:44:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:44:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:44:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:44:42,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939834482] [2022-07-19 21:44:42,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939834482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:44:42,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:44:42,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:44:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731147389] [2022-07-19 21:44:42,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:44:42,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:44:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:44:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:44:42,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:44:42,153 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2022-07-19 21:44:42,154 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) [2022-07-19 21:44:42,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:44:42,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2022-07-19 21:44:42,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:44:42,238 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2022-07-19 21:44:42,239 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-19 21:44:42,239 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. [2022-07-19 21:44:42,239 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2022-07-19 21:44:42,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 183 flow [2022-07-19 21:44:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:44:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-19 21:44:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 524 transitions. [2022-07-19 21:44:42,242 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7891566265060241 [2022-07-19 21:44:42,242 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 524 transitions. [2022-07-19 21:44:42,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 524 transitions. [2022-07-19 21:44:42,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:44:42,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 524 transitions. [2022-07-19 21:44:42,244 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) [2022-07-19 21:44:42,245 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) [2022-07-19 21:44:42,245 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) [2022-07-19 21:44:42,245 INFO L186 Difference]: Start difference. First operand has 85 places, 74 transitions, 192 flow. Second operand 8 states and 524 transitions. [2022-07-19 21:44:42,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 183 flow [2022-07-19 21:44:42,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 172 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-07-19 21:44:42,247 INFO L242 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2022-07-19 21:44:42,247 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} [2022-07-19 21:44:42,248 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2022-07-19 21:44:42,248 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2022-07-19 21:44:42,249 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) [2022-07-19 21:44:42,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:44:42,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:44:42,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-19 21:44:42,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:44:42,252 INFO L356 BasicCegarLoop]: Path program histogram: [7] [2022-07-19 21:44:42,255 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:44:42,255 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:44:42,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:44:42 BasicIcfg [2022-07-19 21:44:42,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:44:42,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:44:42,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:44:42,260 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:44:42,261 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:39" (3/4) ... [2022-07-19 21:44:42,263 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:44:42,267 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:44:42,267 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:44:42,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-19 21:44:42,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:44:42,272 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:44:42,273 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:44:42,311 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:44:42,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:44:42,312 INFO L158 Benchmark]: Toolchain (without parser) took 3425.28ms. Allocated memory was 86.0MB in the beginning and 132.1MB in the end (delta: 46.1MB). Free memory was 53.3MB in the beginning and 66.8MB in the end (delta: -13.5MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2022-07-19 21:44:42,312 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:44:42,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.94ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 52.9MB in the beginning and 84.5MB in the end (delta: -31.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:44:42,313 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.07ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 82.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:44:42,313 INFO L158 Benchmark]: Boogie Preprocessor took 24.41ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 81.6MB in the end (delta: 833.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:44:42,314 INFO L158 Benchmark]: RCFGBuilder took 371.89ms. Allocated memory is still 109.1MB. Free memory was 81.2MB in the beginning and 67.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 21:44:42,314 INFO L158 Benchmark]: TraceAbstraction took 2612.87ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 66.9MB in the beginning and 70.0MB in the end (delta: -3.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2022-07-19 21:44:42,314 INFO L158 Benchmark]: Witness Printer took 51.21ms. Allocated memory is still 132.1MB. Free memory was 68.9MB in the beginning and 66.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:44:42,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.94ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 52.9MB in the beginning and 84.5MB in the end (delta: -31.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.07ms. Allocated memory is still 109.1MB. Free memory was 84.1MB in the beginning and 82.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.41ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 81.6MB in the end (delta: 833.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.89ms. Allocated memory is still 109.1MB. Free memory was 81.2MB in the beginning and 67.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2612.87ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 66.9MB in the beginning and 70.0MB in the end (delta: -3.0MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Witness Printer took 51.21ms. Allocated memory is still 132.1MB. Free memory was 68.9MB in the beginning and 66.8MB 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: 2.5s, 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, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 283 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.3s 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, 0.2s SatisfiabilityAnalysisTime, 0.6s 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! [2022-07-19 21:44:42,355 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