./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/parallel-misc-3.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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:08:01,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:08:01,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:08:01,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:08:01,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:08:01,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:08:01,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:08:01,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:08:01,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:08:01,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:08:01,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:08:01,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:08:01,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:08:01,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:08:01,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:08:01,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:08:01,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:08:01,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:08:01,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:08:01,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:08:01,236 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:08:01,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:08:01,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:08:01,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:08:01,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:08:01,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:08:01,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:08:01,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:08:01,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:08:01,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:08:01,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:08:01,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:08:01,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:08:01,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:08:01,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:08:01,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:08:01,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:08:01,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:08:01,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:08:01,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:08:01,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:08:01,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:08:01,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:08:01,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:08:01,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:08:01,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:08:01,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:08:01,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:08:01,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:08:01,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:08:01,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:08:01,290 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:08:01,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:08:01,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:08:01,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:08:01,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:08:01,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:08:01,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:08:01,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:08:01,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:08:01,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:08:01,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:08:01,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:08:01,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:08:01,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:08:01,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:08:01,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:08:01,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:08:01,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:08:01,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:08:01,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:08:01,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:08:01,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:08:01,296 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:08:01,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:08:01,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:08:01,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2022-07-13 22:08:01,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:08:01,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:08:01,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:08:01,567 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:08:01,567 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:08:01,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-07-13 22:08:01,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cc3e8ce/59b43451075f4649b0ab6d1a70d9047e/FLAG888a69a35 [2022-07-13 22:08:02,017 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:08:02,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-07-13 22:08:02,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cc3e8ce/59b43451075f4649b0ab6d1a70d9047e/FLAG888a69a35 [2022-07-13 22:08:02,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cc3e8ce/59b43451075f4649b0ab6d1a70d9047e [2022-07-13 22:08:02,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:08:02,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:08:02,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:08:02,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:08:02,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:08:02,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa5c1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02, skipping insertion in model container [2022-07-13 22:08:02,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:08:02,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:08:02,257 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/parallel-misc-3.wvr.c[2410,2423] [2022-07-13 22:08:02,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:08:02,272 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:08:02,300 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/parallel-misc-3.wvr.c[2410,2423] [2022-07-13 22:08:02,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:08:02,312 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:08:02,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02 WrapperNode [2022-07-13 22:08:02,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:08:02,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:08:02,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:08:02,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:08:02,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,353 INFO L137 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-07-13 22:08:02,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:08:02,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:08:02,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:08:02,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:08:02,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:08:02,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:08:02,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:08:02,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:08:02,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (1/1) ... [2022-07-13 22:08:02,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:08:02,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:02,405 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) [2022-07-13 22:08:02,407 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 [2022-07-13 22:08:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:08:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:08:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:08:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:08:02,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:08:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:08:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:08:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:08:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 22:08:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 22:08:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:08:02,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:08:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:08:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:08:02,441 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:08:02,502 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:08:02,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:08:02,635 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:08:02,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:08:02,654 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 22:08:02,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:08:02 BoogieIcfgContainer [2022-07-13 22:08:02,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:08:02,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:08:02,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:08:02,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:08:02,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:08:02" (1/3) ... [2022-07-13 22:08:02,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45555cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:08:02, skipping insertion in model container [2022-07-13 22:08:02,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:02" (2/3) ... [2022-07-13 22:08:02,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45555cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:08:02, skipping insertion in model container [2022-07-13 22:08:02,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:08:02" (3/3) ... [2022-07-13 22:08:02,663 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-07-13 22:08:02,667 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:08:02,675 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:08:02,676 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:08:02,676 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:08:02,763 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:08:02,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 206 flow [2022-07-13 22:08:02,837 INFO L129 PetriNetUnfolder]: 11/93 cut-off events. [2022-07-13 22:08:02,838 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:08:02,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-07-13 22:08:02,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 95 transitions, 206 flow [2022-07-13 22:08:02,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-07-13 22:08:02,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:08:02,870 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@51b804ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@504bba35 [2022-07-13 22:08:02,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:08:02,902 INFO L129 PetriNetUnfolder]: 11/83 cut-off events. [2022-07-13 22:08:02,903 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:08:02,904 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:02,904 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] [2022-07-13 22:08:02,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -964819264, now seen corresponding path program 1 times [2022-07-13 22:08:02,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:02,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850600932] [2022-07-13 22:08:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:02,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:03,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:03,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850600932] [2022-07-13 22:08:03,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850600932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:03,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:03,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:08:03,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944431074] [2022-07-13 22:08:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:03,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:08:03,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:03,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:08:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:08:03,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-07-13 22:08:03,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2022-07-13 22:08:03,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:03,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-07-13 22:08:03,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:03,319 INFO L129 PetriNetUnfolder]: 42/175 cut-off events. [2022-07-13 22:08:03,319 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2022-07-13 22:08:03,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 175 events. 42/175 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 425 event pairs, 3 based on Foata normal form. 7/152 useless extension candidates. Maximal degree in co-relation 156. Up to 24 conditions per place. [2022-07-13 22:08:03,323 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 14 selfloop transitions, 2 changer transitions 1/86 dead transitions. [2022-07-13 22:08:03,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 219 flow [2022-07-13 22:08:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:08:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:08:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-07-13 22:08:03,335 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9192982456140351 [2022-07-13 22:08:03,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-07-13 22:08:03,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-07-13 22:08:03,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:03,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-07-13 22:08:03,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2022-07-13 22:08:03,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,349 INFO L186 Difference]: Start difference. First operand has 80 places, 84 transitions, 180 flow. Second operand 3 states and 262 transitions. [2022-07-13 22:08:03,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 219 flow [2022-07-13 22:08:03,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:08:03,356 INFO L242 Difference]: Finished difference. Result has 79 places, 81 transitions, 176 flow [2022-07-13 22:08:03,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2022-07-13 22:08:03,360 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2022-07-13 22:08:03,360 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 176 flow [2022-07-13 22:08:03,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2022-07-13 22:08:03,361 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:03,361 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] [2022-07-13 22:08:03,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:08:03,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash 170943632, now seen corresponding path program 1 times [2022-07-13 22:08:03,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:03,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721955774] [2022-07-13 22:08:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:03,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:03,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721955774] [2022-07-13 22:08:03,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721955774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:03,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:03,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:08:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522953793] [2022-07-13 22:08:03,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:08:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:08:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:08:03,434 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-07-13 22:08:03,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2022-07-13 22:08:03,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:03,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-07-13 22:08:03,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:03,490 INFO L129 PetriNetUnfolder]: 27/141 cut-off events. [2022-07-13 22:08:03,490 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:08:03,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 141 events. 27/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 327 event pairs, 2 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 127. Up to 20 conditions per place. [2022-07-13 22:08:03,492 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 14 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-07-13 22:08:03,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 219 flow [2022-07-13 22:08:03,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:08:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:08:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2022-07-13 22:08:03,495 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2022-07-13 22:08:03,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2022-07-13 22:08:03,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2022-07-13 22:08:03,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:03,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2022-07-13 22:08:03,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-07-13 22:08:03,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,500 INFO L186 Difference]: Start difference. First operand has 79 places, 81 transitions, 176 flow. Second operand 3 states and 257 transitions. [2022-07-13 22:08:03,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 219 flow [2022-07-13 22:08:03,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:08:03,503 INFO L242 Difference]: Finished difference. Result has 80 places, 82 transitions, 186 flow [2022-07-13 22:08:03,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2022-07-13 22:08:03,510 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2022-07-13 22:08:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 186 flow [2022-07-13 22:08:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2022-07-13 22:08:03,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:03,512 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] [2022-07-13 22:08:03,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:08:03,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2136377010, now seen corresponding path program 1 times [2022-07-13 22:08:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:03,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411081838] [2022-07-13 22:08:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:03,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:03,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:03,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411081838] [2022-07-13 22:08:03,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411081838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:03,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:03,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:08:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338425921] [2022-07-13 22:08:03,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:08:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:08:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:08:03,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-07-13 22:08:03,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2022-07-13 22:08:03,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:03,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-07-13 22:08:03,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:03,727 INFO L129 PetriNetUnfolder]: 34/155 cut-off events. [2022-07-13 22:08:03,727 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 22:08:03,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 155 events. 34/155 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 482 event pairs, 2 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 179. Up to 45 conditions per place. [2022-07-13 22:08:03,729 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 15 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-07-13 22:08:03,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 229 flow [2022-07-13 22:08:03,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:08:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:08:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2022-07-13 22:08:03,732 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2022-07-13 22:08:03,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2022-07-13 22:08:03,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2022-07-13 22:08:03,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:03,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2022-07-13 22:08:03,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2022-07-13 22:08:03,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,736 INFO L186 Difference]: Start difference. First operand has 80 places, 82 transitions, 186 flow. Second operand 3 states and 252 transitions. [2022-07-13 22:08:03,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 229 flow [2022-07-13 22:08:03,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:08:03,739 INFO L242 Difference]: Finished difference. Result has 82 places, 83 transitions, 196 flow [2022-07-13 22:08:03,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2022-07-13 22:08:03,740 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2022-07-13 22:08:03,740 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 196 flow [2022-07-13 22:08:03,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2022-07-13 22:08:03,741 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:03,741 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] [2022-07-13 22:08:03,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:08:03,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:03,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1965217384, now seen corresponding path program 1 times [2022-07-13 22:08:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:03,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841236858] [2022-07-13 22:08:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:03,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:03,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841236858] [2022-07-13 22:08:03,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841236858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:03,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:03,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:08:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834496822] [2022-07-13 22:08:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:08:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:08:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:08:03,850 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-07-13 22:08:03,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2022-07-13 22:08:03,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:03,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-07-13 22:08:03,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:03,904 INFO L129 PetriNetUnfolder]: 117/360 cut-off events. [2022-07-13 22:08:03,904 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-13 22:08:03,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 360 events. 117/360 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1604 event pairs, 7 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 368. Up to 112 conditions per place. [2022-07-13 22:08:03,908 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 16 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2022-07-13 22:08:03,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 243 flow [2022-07-13 22:08:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:08:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:08:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2022-07-13 22:08:03,914 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.887719298245614 [2022-07-13 22:08:03,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2022-07-13 22:08:03,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2022-07-13 22:08:03,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:03,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2022-07-13 22:08:03,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-13 22:08:03,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:03,922 INFO L186 Difference]: Start difference. First operand has 82 places, 83 transitions, 196 flow. Second operand 3 states and 253 transitions. [2022-07-13 22:08:03,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 243 flow [2022-07-13 22:08:03,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 88 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:08:03,925 INFO L242 Difference]: Finished difference. Result has 84 places, 84 transitions, 206 flow [2022-07-13 22:08:03,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2022-07-13 22:08:03,926 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2022-07-13 22:08:03,926 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 206 flow [2022-07-13 22:08:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2022-07-13 22:08:03,926 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:03,926 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] [2022-07-13 22:08:03,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:08:03,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:03,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash 430590654, now seen corresponding path program 1 times [2022-07-13 22:08:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:03,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588626060] [2022-07-13 22:08:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:04,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:04,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588626060] [2022-07-13 22:08:04,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588626060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:04,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:04,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:08:04,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592498734] [2022-07-13 22:08:04,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:04,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:08:04,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:08:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:08:04,063 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-07-13 22:08:04,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2022-07-13 22:08:04,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:04,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-07-13 22:08:04,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:04,129 INFO L129 PetriNetUnfolder]: 31/190 cut-off events. [2022-07-13 22:08:04,129 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-07-13 22:08:04,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 190 events. 31/190 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 656 event pairs, 10 based on Foata normal form. 8/187 useless extension candidates. Maximal degree in co-relation 238. Up to 35 conditions per place. [2022-07-13 22:08:04,142 INFO L132 encePairwiseOnDemand]: 88/95 looper letters, 13 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2022-07-13 22:08:04,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 88 transitions, 255 flow [2022-07-13 22:08:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:08:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-13 22:08:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2022-07-13 22:08:04,144 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8763157894736842 [2022-07-13 22:08:04,144 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2022-07-13 22:08:04,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2022-07-13 22:08:04,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:04,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2022-07-13 22:08:04,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2022-07-13 22:08:04,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2022-07-13 22:08:04,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2022-07-13 22:08:04,147 INFO L186 Difference]: Start difference. First operand has 84 places, 84 transitions, 206 flow. Second operand 4 states and 333 transitions. [2022-07-13 22:08:04,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 88 transitions, 255 flow [2022-07-13 22:08:04,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 22:08:04,152 INFO L242 Difference]: Finished difference. Result has 88 places, 85 transitions, 235 flow [2022-07-13 22:08:04,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2022-07-13 22:08:04,155 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-07-13 22:08:04,155 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 235 flow [2022-07-13 22:08:04,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2022-07-13 22:08:04,156 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:04,156 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:04,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:08:04,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1601542053, now seen corresponding path program 1 times [2022-07-13 22:08:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:04,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513570361] [2022-07-13 22:08:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 22:08:04,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:04,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513570361] [2022-07-13 22:08:04,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513570361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:04,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:04,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:08:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977075953] [2022-07-13 22:08:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:04,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:08:04,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:04,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:08:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:08:04,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-07-13 22:08:04,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2022-07-13 22:08:04,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:04,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-07-13 22:08:04,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:04,411 INFO L129 PetriNetUnfolder]: 132/632 cut-off events. [2022-07-13 22:08:04,411 INFO L130 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2022-07-13 22:08:04,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 632 events. 132/632 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3818 event pairs, 54 based on Foata normal form. 32/614 useless extension candidates. Maximal degree in co-relation 709. Up to 127 conditions per place. [2022-07-13 22:08:04,416 INFO L132 encePairwiseOnDemand]: 88/95 looper letters, 14 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2022-07-13 22:08:04,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 287 flow [2022-07-13 22:08:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:08:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-13 22:08:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2022-07-13 22:08:04,418 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8789473684210526 [2022-07-13 22:08:04,418 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2022-07-13 22:08:04,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2022-07-13 22:08:04,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:04,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2022-07-13 22:08:04,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 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) [2022-07-13 22:08:04,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2022-07-13 22:08:04,421 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2022-07-13 22:08:04,421 INFO L186 Difference]: Start difference. First operand has 88 places, 85 transitions, 235 flow. Second operand 4 states and 334 transitions. [2022-07-13 22:08:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 287 flow [2022-07-13 22:08:04,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 282 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-13 22:08:04,428 INFO L242 Difference]: Finished difference. Result has 92 places, 86 transitions, 261 flow [2022-07-13 22:08:04,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2022-07-13 22:08:04,431 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 12 predicate places. [2022-07-13 22:08:04,431 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 261 flow [2022-07-13 22:08:04,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2022-07-13 22:08:04,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:04,432 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:08:04,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:04,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1527711555, now seen corresponding path program 1 times [2022-07-13 22:08:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:04,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810778920] [2022-07-13 22:08:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:08:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:04,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810778920] [2022-07-13 22:08:04,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810778920] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128379352] [2022-07-13 22:08:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:04,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:04,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:04,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:04,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:08:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:04,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 22:08:04,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:08:04,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 22:08:04,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128379352] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:08:04,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:08:04,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-07-13 22:08:04,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216052761] [2022-07-13 22:08:04,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:08:04,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:08:04,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:08:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:08:04,997 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-07-13 22:08:04,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 261 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2022-07-13 22:08:04,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:04,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-07-13 22:08:04,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:05,141 INFO L129 PetriNetUnfolder]: 95/670 cut-off events. [2022-07-13 22:08:05,142 INFO L130 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-07-13 22:08:05,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 670 events. 95/670 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4050 event pairs, 16 based on Foata normal form. 1/630 useless extension candidates. Maximal degree in co-relation 820. Up to 100 conditions per place. [2022-07-13 22:08:05,148 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 26 selfloop transitions, 7 changer transitions 4/110 dead transitions. [2022-07-13 22:08:05,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 110 transitions, 390 flow [2022-07-13 22:08:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:08:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:08:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2022-07-13 22:08:05,151 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2022-07-13 22:08:05,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2022-07-13 22:08:05,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2022-07-13 22:08:05,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:05,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2022-07-13 22:08:05,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 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) [2022-07-13 22:08:05,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2022-07-13 22:08:05,155 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2022-07-13 22:08:05,155 INFO L186 Difference]: Start difference. First operand has 92 places, 86 transitions, 261 flow. Second operand 7 states and 577 transitions. [2022-07-13 22:08:05,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 110 transitions, 390 flow [2022-07-13 22:08:05,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 110 transitions, 385 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-13 22:08:05,159 INFO L242 Difference]: Finished difference. Result has 102 places, 92 transitions, 307 flow [2022-07-13 22:08:05,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2022-07-13 22:08:05,160 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 22 predicate places. [2022-07-13 22:08:05,160 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 307 flow [2022-07-13 22:08:05,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2022-07-13 22:08:05,161 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:05,161 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:05,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:08:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:05,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash 913735953, now seen corresponding path program 2 times [2022-07-13 22:08:05,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:05,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736148062] [2022-07-13 22:08:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:05,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:05,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:05,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736148062] [2022-07-13 22:08:05,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736148062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:05,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788391717] [2022-07-13 22:08:05,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:08:05,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:05,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:05,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:05,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:08:05,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:08:05,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:08:05,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 22:08:05,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:05,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:08:05,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788391717] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:08:05,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:08:05,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-07-13 22:08:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354380008] [2022-07-13 22:08:05,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:08:05,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:08:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:08:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:08:05,807 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-07-13 22:08:05,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2022-07-13 22:08:05,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:05,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-07-13 22:08:05,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:05,980 INFO L129 PetriNetUnfolder]: 132/947 cut-off events. [2022-07-13 22:08:05,980 INFO L130 PetriNetUnfolder]: For 436/454 co-relation queries the response was YES. [2022-07-13 22:08:05,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 947 events. 132/947 cut-off events. For 436/454 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6734 event pairs, 10 based on Foata normal form. 9/902 useless extension candidates. Maximal degree in co-relation 1838. Up to 159 conditions per place. [2022-07-13 22:08:05,989 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 32 selfloop transitions, 11 changer transitions 4/120 dead transitions. [2022-07-13 22:08:05,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 507 flow [2022-07-13 22:08:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:08:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 22:08:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2022-07-13 22:08:05,991 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2022-07-13 22:08:05,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2022-07-13 22:08:05,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2022-07-13 22:08:05,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:05,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2022-07-13 22:08:05,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 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) [2022-07-13 22:08:05,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2022-07-13 22:08:05,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2022-07-13 22:08:05,995 INFO L186 Difference]: Start difference. First operand has 102 places, 92 transitions, 307 flow. Second operand 7 states and 577 transitions. [2022-07-13 22:08:05,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 507 flow [2022-07-13 22:08:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 120 transitions, 493 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-07-13 22:08:06,000 INFO L242 Difference]: Finished difference. Result has 109 places, 102 transitions, 412 flow [2022-07-13 22:08:06,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2022-07-13 22:08:06,001 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 29 predicate places. [2022-07-13 22:08:06,001 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 412 flow [2022-07-13 22:08:06,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2022-07-13 22:08:06,001 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:06,002 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:06,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:08:06,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 22:08:06,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1214228917, now seen corresponding path program 3 times [2022-07-13 22:08:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:06,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166539016] [2022-07-13 22:08:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:06,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:06,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166539016] [2022-07-13 22:08:06,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166539016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:08:06,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762720686] [2022-07-13 22:08:06,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:08:06,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:06,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:08:06,348 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:08:06,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:08:06,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-13 22:08:06,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:08:06,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 22:08:06,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:08:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:06,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:08:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:08:06,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762720686] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:08:06,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:08:06,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-07-13 22:08:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148071052] [2022-07-13 22:08:06,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:08:06,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:08:06,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:08:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:08:06,671 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-07-13 22:08:06,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 412 flow. Second operand has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 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) [2022-07-13 22:08:06,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:06,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-07-13 22:08:06,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:06,862 INFO L129 PetriNetUnfolder]: 131/934 cut-off events. [2022-07-13 22:08:06,862 INFO L130 PetriNetUnfolder]: For 821/865 co-relation queries the response was YES. [2022-07-13 22:08:06,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 934 events. 131/934 cut-off events. For 821/865 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6599 event pairs, 6 based on Foata normal form. 39/922 useless extension candidates. Maximal degree in co-relation 1986. Up to 87 conditions per place. [2022-07-13 22:08:06,872 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 22 selfloop transitions, 25 changer transitions 4/124 dead transitions. [2022-07-13 22:08:06,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 124 transitions, 603 flow [2022-07-13 22:08:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:08:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 22:08:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 652 transitions. [2022-07-13 22:08:06,874 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8578947368421053 [2022-07-13 22:08:06,874 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 652 transitions. [2022-07-13 22:08:06,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 652 transitions. [2022-07-13 22:08:06,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:06,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 652 transitions. [2022-07-13 22:08:06,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 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) [2022-07-13 22:08:06,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2022-07-13 22:08:06,878 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2022-07-13 22:08:06,879 INFO L186 Difference]: Start difference. First operand has 109 places, 102 transitions, 412 flow. Second operand 8 states and 652 transitions. [2022-07-13 22:08:06,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 124 transitions, 603 flow [2022-07-13 22:08:06,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 124 transitions, 585 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-07-13 22:08:06,884 INFO L242 Difference]: Finished difference. Result has 115 places, 106 transitions, 499 flow [2022-07-13 22:08:06,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=115, PETRI_TRANSITIONS=106} [2022-07-13 22:08:06,885 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 35 predicate places. [2022-07-13 22:08:06,885 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 106 transitions, 499 flow [2022-07-13 22:08:06,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 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) [2022-07-13 22:08:06,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:06,886 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:06,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:08:07,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:08:07,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash -927880900, now seen corresponding path program 4 times [2022-07-13 22:08:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:07,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186078013] [2022-07-13 22:08:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 22:08:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:07,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186078013] [2022-07-13 22:08:07,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186078013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:07,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:07,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:08:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475173453] [2022-07-13 22:08:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:07,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:08:07,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:08:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:08:07,130 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-07-13 22:08:07,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 106 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-13 22:08:07,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:07,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-07-13 22:08:07,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:07,229 INFO L129 PetriNetUnfolder]: 109/742 cut-off events. [2022-07-13 22:08:07,229 INFO L130 PetriNetUnfolder]: For 1031/1109 co-relation queries the response was YES. [2022-07-13 22:08:07,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 742 events. 109/742 cut-off events. For 1031/1109 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4799 event pairs, 10 based on Foata normal form. 28/727 useless extension candidates. Maximal degree in co-relation 1773. Up to 113 conditions per place. [2022-07-13 22:08:07,235 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 20 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-07-13 22:08:07,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 552 flow [2022-07-13 22:08:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:08:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:08:07,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2022-07-13 22:08:07,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8912280701754386 [2022-07-13 22:08:07,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2022-07-13 22:08:07,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2022-07-13 22:08:07,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:07,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2022-07-13 22:08:07,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-07-13 22:08:07,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:07,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:07,241 INFO L186 Difference]: Start difference. First operand has 115 places, 106 transitions, 499 flow. Second operand 3 states and 254 transitions. [2022-07-13 22:08:07,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 552 flow [2022-07-13 22:08:07,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 531 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-07-13 22:08:07,246 INFO L242 Difference]: Finished difference. Result has 113 places, 107 transitions, 500 flow [2022-07-13 22:08:07,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2022-07-13 22:08:07,248 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 33 predicate places. [2022-07-13 22:08:07,248 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 500 flow [2022-07-13 22:08:07,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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) [2022-07-13 22:08:07,248 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:08:07,249 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:07,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:08:07,249 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:08:07,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:08:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash -403236715, now seen corresponding path program 5 times [2022-07-13 22:08:07,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:08:07,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480370259] [2022-07-13 22:08:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:08:07,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:08:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:08:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 22:08:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:08:07,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480370259] [2022-07-13 22:08:07,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480370259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:08:07,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:08:07,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:08:07,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894367912] [2022-07-13 22:08:07,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:08:07,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:08:07,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:08:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:08:07,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:08:07,292 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-07-13 22:08:07,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2022-07-13 22:08:07,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:08:07,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-07-13 22:08:07,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:08:07,411 INFO L129 PetriNetUnfolder]: 224/1049 cut-off events. [2022-07-13 22:08:07,411 INFO L130 PetriNetUnfolder]: For 1744/1762 co-relation queries the response was YES. [2022-07-13 22:08:07,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 1049 events. 224/1049 cut-off events. For 1744/1762 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7649 event pairs, 41 based on Foata normal form. 37/1011 useless extension candidates. Maximal degree in co-relation 2381. Up to 227 conditions per place. [2022-07-13 22:08:07,420 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2022-07-13 22:08:07,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 609 flow [2022-07-13 22:08:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:08:07,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 22:08:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2022-07-13 22:08:07,421 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2022-07-13 22:08:07,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2022-07-13 22:08:07,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2022-07-13 22:08:07,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:08:07,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2022-07-13 22:08:07,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2022-07-13 22:08:07,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:07,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2022-07-13 22:08:07,425 INFO L186 Difference]: Start difference. First operand has 113 places, 107 transitions, 500 flow. Second operand 3 states and 256 transitions. [2022-07-13 22:08:07,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 609 flow [2022-07-13 22:08:07,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 109 transitions, 576 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-07-13 22:08:07,431 INFO L242 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2022-07-13 22:08:07,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2022-07-13 22:08:07,432 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 26 predicate places. [2022-07-13 22:08:07,432 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2022-07-13 22:08:07,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2022-07-13 22:08:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-13 22:08:07,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-13 22:08:07,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-13 22:08:07,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:08:07,436 INFO L356 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1] [2022-07-13 22:08:07,440 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 22:08:07,440 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 22:08:07,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:08:07 BasicIcfg [2022-07-13 22:08:07,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 22:08:07,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 22:08:07,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 22:08:07,447 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 22:08:07,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:08:02" (3/4) ... [2022-07-13 22:08:07,449 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 22:08:07,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-13 22:08:07,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-13 22:08:07,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-13 22:08:07,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 22:08:07,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 22:08:07,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 22:08:07,489 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 22:08:07,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 22:08:07,489 INFO L158 Benchmark]: Toolchain (without parser) took 5452.84ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 79.9MB in the beginning and 61.3MB in the end (delta: 18.6MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2022-07-13 22:08:07,489 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:08:07,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.17ms. Allocated memory is still 111.1MB. Free memory was 79.8MB in the beginning and 84.5MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 22:08:07,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.31ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:08:07,490 INFO L158 Benchmark]: Boogie Preprocessor took 23.48ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 81.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:08:07,490 INFO L158 Benchmark]: RCFGBuilder took 276.18ms. Allocated memory is still 111.1MB. Free memory was 81.5MB in the beginning and 69.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 22:08:07,491 INFO L158 Benchmark]: TraceAbstraction took 4788.19ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 68.5MB in the beginning and 64.5MB in the end (delta: 4.0MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2022-07-13 22:08:07,491 INFO L158 Benchmark]: Witness Printer took 42.34ms. Allocated memory is still 161.5MB. Free memory was 64.5MB in the beginning and 61.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 22:08:07,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory was 65.4MB in the beginning and 65.4MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.17ms. Allocated memory is still 111.1MB. Free memory was 79.8MB in the beginning and 84.5MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.31ms. Allocated memory is still 111.1MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.48ms. Allocated memory is still 111.1MB. Free memory was 82.9MB in the beginning and 81.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.18ms. Allocated memory is still 111.1MB. Free memory was 81.5MB in the beginning and 69.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4788.19ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 68.5MB in the beginning and 64.5MB in the end (delta: 4.0MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. * Witness Printer took 42.34ms. Allocated memory is still 161.5MB. Free memory was 64.5MB in the beginning and 61.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: 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, 113 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: 4.6s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 162 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 550 IncrementalHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 63 mSDtfsCounter, 550 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 483 SyntacticMatches, 20 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred in iteration=10, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1051 NumberOfCodeBlocks, 1051 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1274 ConstructedInterpolants, 0 QuantifiedInterpolants, 3783 SizeOfPredicates, 6 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 67/166 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! [2022-07-13 22:08:07,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE