./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i -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 adac70a9b891a5462c4bee71a2751021c9d437d73a002d25ad244a8f2ad465c8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:20:00,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:20:00,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:20:00,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:20:00,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:20:00,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:20:00,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:20:00,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:20:00,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:20:00,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:20:00,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:20:00,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:20:00,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:20:00,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:20:00,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:20:00,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:20:00,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:20:00,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:20:00,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:20:00,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:20:00,550 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:20:00,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:20:00,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:20:00,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:20:00,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:20:00,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:20:00,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:20:00,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:20:00,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:20:00,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:20:00,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:20:00,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:20:00,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:20:00,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:20:00,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:20:00,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:20:00,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:20:00,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:20:00,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:20:00,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:20:00,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:20:00,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:20:00,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:20:00,607 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:20:00,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:20:00,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:20:00,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:20:00,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:20:00,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:20:00,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:20:00,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:20:00,610 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:20:00,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:20:00,611 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:20:00,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:20:00,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:20:00,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:20:00,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:20:00,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:20:00,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:20:00,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:20:00,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:20:00,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:20:00,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:20:00,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:20:00,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:20:00,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:20:00,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:20:00,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:20:00,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:20:00,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:20:00,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:20:00,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:20:00,622 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:20:00,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:20:00,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:20:00,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adac70a9b891a5462c4bee71a2751021c9d437d73a002d25ad244a8f2ad465c8 [2022-07-22 21:20:00,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:20:00,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:20:00,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:20:00,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:20:00,926 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:20:00,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i [2022-07-22 21:20:00,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228277145/51b8e47ac84f469b916d5c13bf79674d/FLAGe6e9e7dc3 [2022-07-22 21:20:01,402 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:20:01,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i [2022-07-22 21:20:01,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228277145/51b8e47ac84f469b916d5c13bf79674d/FLAGe6e9e7dc3 [2022-07-22 21:20:01,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228277145/51b8e47ac84f469b916d5c13bf79674d [2022-07-22 21:20:01,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:20:01,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:20:01,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:20:01,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:20:01,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:20:01,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:20:01" (1/1) ... [2022-07-22 21:20:01,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a314f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:01, skipping insertion in model container [2022-07-22 21:20:01,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:20:01" (1/1) ... [2022-07-22 21:20:01,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:20:01,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:20:02,061 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30435,30448] [2022-07-22 21:20:02,068 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30785,30798] [2022-07-22 21:20:02,070 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30975,30988] [2022-07-22 21:20:02,074 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31167,31180] [2022-07-22 21:20:02,077 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31508,31521] [2022-07-22 21:20:02,079 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31698,31711] [2022-07-22 21:20:02,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:20:02,097 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:20:02,138 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30435,30448] [2022-07-22 21:20:02,139 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30785,30798] [2022-07-22 21:20:02,140 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[30975,30988] [2022-07-22 21:20:02,141 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31167,31180] [2022-07-22 21:20:02,142 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31508,31521] [2022-07-22 21:20:02,143 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/pthread-ext/42_FreeBSD_rdma_addr_sliced.i[31698,31711] [2022-07-22 21:20:02,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:20:02,175 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:20:02,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02 WrapperNode [2022-07-22 21:20:02,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:20:02,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:20:02,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:20:02,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:20:02,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,227 INFO L137 Inliner]: procedures = 176, calls = 35, calls flagged for inlining = 27, calls inlined = 41, statements flattened = 232 [2022-07-22 21:20:02,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:20:02,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:20:02,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:20:02,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:20:02,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:20:02,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:20:02,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:20:02,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:20:02,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (1/1) ... [2022-07-22 21:20:02,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:20:02,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:20:02,287 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) [2022-07-22 21:20:02,298 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 [2022-07-22 21:20:02,326 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-22 21:20:02,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-22 21:20:02,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:20:02,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:20:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:20:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:20:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:20:02,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:20:02,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:20:02,329 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:20:02,409 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:20:02,410 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:20:02,820 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:20:02,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:20:02,911 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:20:02,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:20:02 BoogieIcfgContainer [2022-07-22 21:20:02,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:20:02,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:20:02,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:20:02,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:20:02,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:20:01" (1/3) ... [2022-07-22 21:20:02,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6470513e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:20:02, skipping insertion in model container [2022-07-22 21:20:02,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:20:02" (2/3) ... [2022-07-22 21:20:02,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6470513e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:20:02, skipping insertion in model container [2022-07-22 21:20:02,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:20:02" (3/3) ... [2022-07-22 21:20:02,920 INFO L111 eAbstractionObserver]: Analyzing ICFG 42_FreeBSD_rdma_addr_sliced.i [2022-07-22 21:20:02,925 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:20:02,932 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:20:02,933 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-22 21:20:02,933 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:20:02,999 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:20:03,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 164 transitions, 333 flow [2022-07-22 21:20:03,111 INFO L129 PetriNetUnfolder]: 26/175 cut-off events. [2022-07-22 21:20:03,112 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:20:03,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 175 events. 26/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 454 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 146. Up to 6 conditions per place. [2022-07-22 21:20:03,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 164 transitions, 333 flow [2022-07-22 21:20:03,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 164 transitions, 333 flow [2022-07-22 21:20:03,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:20:03,148 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@71aa0edc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@561d0932 [2022-07-22 21:20:03,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-22 21:20:03,160 INFO L129 PetriNetUnfolder]: 3/51 cut-off events. [2022-07-22 21:20:03,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:20:03,160 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:03,161 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] [2022-07-22 21:20:03,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-22 21:20:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash 297090286, now seen corresponding path program 1 times [2022-07-22 21:20:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:03,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440960034] [2022-07-22 21:20:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:03,292 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:20:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:03,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:20:03,359 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:20:03,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-07-22 21:20:03,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2022-07-22 21:20:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2022-07-22 21:20:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2022-07-22 21:20:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2022-07-22 21:20:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2022-07-22 21:20:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2022-07-22 21:20:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2022-07-22 21:20:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2022-07-22 21:20:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2022-07-22 21:20:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2022-07-22 21:20:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2022-07-22 21:20:03,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2022-07-22 21:20:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:20:03,368 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:20:03,371 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:20:03,371 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-22 21:20:03,425 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:20:03,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 298 transitions, 608 flow [2022-07-22 21:20:03,522 INFO L129 PetriNetUnfolder]: 51/322 cut-off events. [2022-07-22 21:20:03,523 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:20:03,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 322 events. 51/322 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1282 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 279. Up to 6 conditions per place. [2022-07-22 21:20:03,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 298 transitions, 608 flow [2022-07-22 21:20:03,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 298 transitions, 608 flow [2022-07-22 21:20:03,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:20:03,544 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@71aa0edc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@561d0932 [2022-07-22 21:20:03,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-07-22 21:20:03,558 INFO L129 PetriNetUnfolder]: 6/88 cut-off events. [2022-07-22 21:20:03,558 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:20:03,558 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:03,558 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] [2022-07-22 21:20:03,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-07-22 21:20:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1188948045, now seen corresponding path program 1 times [2022-07-22 21:20:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:03,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915621426] [2022-07-22 21:20:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:03,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:20:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:20:03,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:20:03,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915621426] [2022-07-22 21:20:03,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915621426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:20:03,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:20:03,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:20:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88193579] [2022-07-22 21:20:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:20:03,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:20:03,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:20:03,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:20:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:20:03,719 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 298 [2022-07-22 21:20:03,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 298 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 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) [2022-07-22 21:20:03,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:20:03,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 298 [2022-07-22 21:20:03,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:20:04,176 INFO L129 PetriNetUnfolder]: 236/1704 cut-off events. [2022-07-22 21:20:04,176 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-07-22 21:20:04,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 1704 events. 236/1704 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13206 event pairs, 63 based on Foata normal form. 1047/2592 useless extension candidates. Maximal degree in co-relation 710. Up to 339 conditions per place. [2022-07-22 21:20:04,199 INFO L132 encePairwiseOnDemand]: 232/298 looper letters, 18 selfloop transitions, 32 changer transitions 0/220 dead transitions. [2022-07-22 21:20:04,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 220 transitions, 557 flow [2022-07-22 21:20:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:20:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:20:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-07-22 21:20:04,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7751677852348994 [2022-07-22 21:20:04,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-07-22 21:20:04,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-07-22 21:20:04,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:20:04,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-07-22 21:20:04,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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) [2022-07-22 21:20:04,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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) [2022-07-22 21:20:04,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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) [2022-07-22 21:20:04,240 INFO L186 Difference]: Start difference. First operand has 254 places, 298 transitions, 608 flow. Second operand 3 states and 693 transitions. [2022-07-22 21:20:04,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 220 transitions, 557 flow [2022-07-22 21:20:04,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 220 transitions, 555 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-22 21:20:04,251 INFO L242 Difference]: Finished difference. Result has 208 places, 219 transitions, 512 flow [2022-07-22 21:20:04,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=208, PETRI_TRANSITIONS=219} [2022-07-22 21:20:04,256 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -46 predicate places. [2022-07-22 21:20:04,256 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 219 transitions, 512 flow [2022-07-22 21:20:04,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 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) [2022-07-22 21:20:04,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:04,257 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:20:04,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:20:04,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-07-22 21:20:04,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash 971148267, now seen corresponding path program 1 times [2022-07-22 21:20:04,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:04,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778488159] [2022-07-22 21:20:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:04,299 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:20:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:04,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:20:04,338 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:20:04,338 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-07-22 21:20:04,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (17 of 19 remaining) [2022-07-22 21:20:04,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (16 of 19 remaining) [2022-07-22 21:20:04,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (15 of 19 remaining) [2022-07-22 21:20:04,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (14 of 19 remaining) [2022-07-22 21:20:04,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (13 of 19 remaining) [2022-07-22 21:20:04,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (12 of 19 remaining) [2022-07-22 21:20:04,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 19 remaining) [2022-07-22 21:20:04,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 19 remaining) [2022-07-22 21:20:04,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 19 remaining) [2022-07-22 21:20:04,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 19 remaining) [2022-07-22 21:20:04,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 19 remaining) [2022-07-22 21:20:04,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 19 remaining) [2022-07-22 21:20:04,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 19 remaining) [2022-07-22 21:20:04,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 19 remaining) [2022-07-22 21:20:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 19 remaining) [2022-07-22 21:20:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 19 remaining) [2022-07-22 21:20:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 19 remaining) [2022-07-22 21:20:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 19 remaining) [2022-07-22 21:20:04,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:20:04,344 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:20:04,344 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:20:04,345 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-22 21:20:04,397 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:20:04,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 366 places, 432 transitions, 885 flow [2022-07-22 21:20:04,513 INFO L129 PetriNetUnfolder]: 76/469 cut-off events. [2022-07-22 21:20:04,513 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-22 21:20:04,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 469 events. 76/469 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2194 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 412. Up to 8 conditions per place. [2022-07-22 21:20:04,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 432 transitions, 885 flow [2022-07-22 21:20:04,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 432 transitions, 885 flow [2022-07-22 21:20:04,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:20:04,537 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@71aa0edc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@561d0932 [2022-07-22 21:20:04,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-22 21:20:04,543 INFO L129 PetriNetUnfolder]: 5/87 cut-off events. [2022-07-22 21:20:04,544 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:20:04,544 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:04,544 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] [2022-07-22 21:20:04,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2022-07-22 21:20:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 655897256, now seen corresponding path program 1 times [2022-07-22 21:20:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:04,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807009902] [2022-07-22 21:20:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:20:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:20:04,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:20:04,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807009902] [2022-07-22 21:20:04,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807009902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:20:04,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:20:04,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:20:04,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752619009] [2022-07-22 21:20:04,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:20:04,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:20:04,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:20:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:20:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:20:04,586 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 432 [2022-07-22 21:20:04,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 432 transitions, 885 flow. Second operand has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 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) [2022-07-22 21:20:04,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:20:04,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 432 [2022-07-22 21:20:04,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:20:08,120 INFO L129 PetriNetUnfolder]: 3610/21421 cut-off events. [2022-07-22 21:20:08,121 INFO L130 PetriNetUnfolder]: For 2185/2185 co-relation queries the response was YES. [2022-07-22 21:20:08,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30065 conditions, 21421 events. 3610/21421 cut-off events. For 2185/2185 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 289209 event pairs, 1223 based on Foata normal form. 21799/41145 useless extension candidates. Maximal degree in co-relation 2302. Up to 4967 conditions per place. [2022-07-22 21:20:08,347 INFO L132 encePairwiseOnDemand]: 334/432 looper letters, 27 selfloop transitions, 48 changer transitions 0/319 dead transitions. [2022-07-22 21:20:08,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 319 transitions, 821 flow [2022-07-22 21:20:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:20:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:20:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2022-07-22 21:20:08,351 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7692901234567902 [2022-07-22 21:20:08,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2022-07-22 21:20:08,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2022-07-22 21:20:08,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:20:08,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2022-07-22 21:20:08,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 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) [2022-07-22 21:20:08,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2022-07-22 21:20:08,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2022-07-22 21:20:08,358 INFO L186 Difference]: Start difference. First operand has 366 places, 432 transitions, 885 flow. Second operand 3 states and 997 transitions. [2022-07-22 21:20:08,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 319 transitions, 821 flow [2022-07-22 21:20:08,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 319 transitions, 813 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-22 21:20:08,367 INFO L242 Difference]: Finished difference. Result has 299 places, 317 transitions, 745 flow [2022-07-22 21:20:08,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=745, PETRI_PLACES=299, PETRI_TRANSITIONS=317} [2022-07-22 21:20:08,369 INFO L279 CegarLoopForPetriNet]: 366 programPoint places, -67 predicate places. [2022-07-22 21:20:08,369 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 317 transitions, 745 flow [2022-07-22 21:20:08,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 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) [2022-07-22 21:20:08,370 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:08,370 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:20:08,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:20:08,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2022-07-22 21:20:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash 878227405, now seen corresponding path program 1 times [2022-07-22 21:20:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:08,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422815729] [2022-07-22 21:20:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:08,395 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:20:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:08,409 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:20:08,409 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:20:08,410 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-07-22 21:20:08,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 25 remaining) [2022-07-22 21:20:08,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (22 of 25 remaining) [2022-07-22 21:20:08,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (21 of 25 remaining) [2022-07-22 21:20:08,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (20 of 25 remaining) [2022-07-22 21:20:08,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (19 of 25 remaining) [2022-07-22 21:20:08,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (18 of 25 remaining) [2022-07-22 21:20:08,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (17 of 25 remaining) [2022-07-22 21:20:08,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (16 of 25 remaining) [2022-07-22 21:20:08,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (15 of 25 remaining) [2022-07-22 21:20:08,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (14 of 25 remaining) [2022-07-22 21:20:08,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (13 of 25 remaining) [2022-07-22 21:20:08,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (12 of 25 remaining) [2022-07-22 21:20:08,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 25 remaining) [2022-07-22 21:20:08,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 25 remaining) [2022-07-22 21:20:08,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 25 remaining) [2022-07-22 21:20:08,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 25 remaining) [2022-07-22 21:20:08,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 25 remaining) [2022-07-22 21:20:08,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 25 remaining) [2022-07-22 21:20:08,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 25 remaining) [2022-07-22 21:20:08,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 25 remaining) [2022-07-22 21:20:08,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 25 remaining) [2022-07-22 21:20:08,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 25 remaining) [2022-07-22 21:20:08,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 25 remaining) [2022-07-22 21:20:08,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 25 remaining) [2022-07-22 21:20:08,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:20:08,415 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:20:08,416 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:20:08,416 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-22 21:20:08,557 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:20:08,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 566 transitions, 1164 flow [2022-07-22 21:20:08,700 INFO L129 PetriNetUnfolder]: 101/616 cut-off events. [2022-07-22 21:20:08,701 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-22 21:20:08,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 616 events. 101/616 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3073 event pairs, 0 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 545. Up to 10 conditions per place. [2022-07-22 21:20:08,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 566 transitions, 1164 flow [2022-07-22 21:20:08,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 478 places, 566 transitions, 1164 flow [2022-07-22 21:20:08,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:20:08,741 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@71aa0edc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@561d0932 [2022-07-22 21:20:08,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-07-22 21:20:08,747 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2022-07-22 21:20:08,747 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:20:08,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:08,747 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] [2022-07-22 21:20:08,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2022-07-22 21:20:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:08,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2108271208, now seen corresponding path program 1 times [2022-07-22 21:20:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:08,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005623116] [2022-07-22 21:20:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:08,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:20:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:20:08,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:20:08,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005623116] [2022-07-22 21:20:08,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005623116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:20:08,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:20:08,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:20:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178125304] [2022-07-22 21:20:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:20:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:20:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:20:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:20:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:20:08,800 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 566 [2022-07-22 21:20:08,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 566 transitions, 1164 flow. Second operand has 3 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 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) [2022-07-22 21:20:08,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:20:08,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 566 [2022-07-22 21:20:08,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:20:47,682 INFO L129 PetriNetUnfolder]: 46041/246687 cut-off events. [2022-07-22 21:20:47,682 INFO L130 PetriNetUnfolder]: For 45095/45095 co-relation queries the response was YES. [2022-07-22 21:20:50,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 357798 conditions, 246687 events. 46041/246687 cut-off events. For 45095/45095 co-relation queries the response was YES. Maximal size of possible extension queue 7020. Compared 4664592 event pairs, 17119 based on Foata normal form. 357768/580166 useless extension candidates. Maximal degree in co-relation 30453. Up to 62145 conditions per place. [2022-07-22 21:20:52,161 INFO L132 encePairwiseOnDemand]: 436/566 looper letters, 36 selfloop transitions, 64 changer transitions 0/418 dead transitions. [2022-07-22 21:20:52,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 418 transitions, 1089 flow [2022-07-22 21:20:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:20:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:20:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1301 transitions. [2022-07-22 21:20:52,165 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7661955241460542 [2022-07-22 21:20:52,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1301 transitions. [2022-07-22 21:20:52,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1301 transitions. [2022-07-22 21:20:52,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:20:52,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1301 transitions. [2022-07-22 21:20:52,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.6666666666667) internal successors, (1301), 3 states have internal predecessors, (1301), 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) [2022-07-22 21:20:52,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 566.0) internal successors, (2264), 4 states have internal predecessors, (2264), 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) [2022-07-22 21:20:52,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 566.0) internal successors, (2264), 4 states have internal predecessors, (2264), 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) [2022-07-22 21:20:52,174 INFO L186 Difference]: Start difference. First operand has 478 places, 566 transitions, 1164 flow. Second operand 3 states and 1301 transitions. [2022-07-22 21:20:52,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 418 transitions, 1089 flow [2022-07-22 21:20:52,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 418 transitions, 1071 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-22 21:20:52,198 INFO L242 Difference]: Finished difference. Result has 390 places, 415 transitions, 978 flow [2022-07-22 21:20:52,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=566, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=978, PETRI_PLACES=390, PETRI_TRANSITIONS=415} [2022-07-22 21:20:52,201 INFO L279 CegarLoopForPetriNet]: 478 programPoint places, -88 predicate places. [2022-07-22 21:20:52,201 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 415 transitions, 978 flow [2022-07-22 21:20:52,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 356.3333333333333) internal successors, (1069), 3 states have internal predecessors, (1069), 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) [2022-07-22 21:20:52,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:52,202 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:20:52,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:20:52,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2022-07-22 21:20:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1627373562, now seen corresponding path program 1 times [2022-07-22 21:20:52,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642121578] [2022-07-22 21:20:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:52,234 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:20:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:20:52,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:20:52,262 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:20:52,262 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-07-22 21:20:52,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (29 of 31 remaining) [2022-07-22 21:20:52,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (28 of 31 remaining) [2022-07-22 21:20:52,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (27 of 31 remaining) [2022-07-22 21:20:52,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (26 of 31 remaining) [2022-07-22 21:20:52,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (25 of 31 remaining) [2022-07-22 21:20:52,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 31 remaining) [2022-07-22 21:20:52,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 31 remaining) [2022-07-22 21:20:52,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (22 of 31 remaining) [2022-07-22 21:20:52,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (21 of 31 remaining) [2022-07-22 21:20:52,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (20 of 31 remaining) [2022-07-22 21:20:52,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (19 of 31 remaining) [2022-07-22 21:20:52,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (18 of 31 remaining) [2022-07-22 21:20:52,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (17 of 31 remaining) [2022-07-22 21:20:52,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (16 of 31 remaining) [2022-07-22 21:20:52,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (15 of 31 remaining) [2022-07-22 21:20:52,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (14 of 31 remaining) [2022-07-22 21:20:52,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (13 of 31 remaining) [2022-07-22 21:20:52,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (12 of 31 remaining) [2022-07-22 21:20:52,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 31 remaining) [2022-07-22 21:20:52,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 31 remaining) [2022-07-22 21:20:52,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 31 remaining) [2022-07-22 21:20:52,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 31 remaining) [2022-07-22 21:20:52,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 31 remaining) [2022-07-22 21:20:52,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 31 remaining) [2022-07-22 21:20:52,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 31 remaining) [2022-07-22 21:20:52,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 31 remaining) [2022-07-22 21:20:52,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 31 remaining) [2022-07-22 21:20:52,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 31 remaining) [2022-07-22 21:20:52,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 31 remaining) [2022-07-22 21:20:52,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 31 remaining) [2022-07-22 21:20:52,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:20:52,269 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:20:52,269 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:20:52,270 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-22 21:20:52,338 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:20:52,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 590 places, 700 transitions, 1445 flow [2022-07-22 21:20:52,502 INFO L129 PetriNetUnfolder]: 126/763 cut-off events. [2022-07-22 21:20:52,503 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-22 21:20:52,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 763 events. 126/763 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4032 event pairs, 0 based on Foata normal form. 0/601 useless extension candidates. Maximal degree in co-relation 678. Up to 12 conditions per place. [2022-07-22 21:20:52,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 590 places, 700 transitions, 1445 flow [2022-07-22 21:20:52,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 590 places, 700 transitions, 1445 flow [2022-07-22 21:20:52,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:20:52,546 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@71aa0edc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@561d0932 [2022-07-22 21:20:52,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-07-22 21:20:52,550 INFO L129 PetriNetUnfolder]: 7/88 cut-off events. [2022-07-22 21:20:52,550 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:20:52,550 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:20:52,550 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] [2022-07-22 21:20:52,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-07-22 21:20:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:20:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1252289374, now seen corresponding path program 1 times [2022-07-22 21:20:52,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:20:52,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314547781] [2022-07-22 21:20:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:20:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:20:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:20:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:20:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:20:52,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314547781] [2022-07-22 21:20:52,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314547781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:20:52,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:20:52,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:20:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380868238] [2022-07-22 21:20:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:20:52,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:20:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:20:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:20:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:20:52,596 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 700 [2022-07-22 21:20:52,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 700 transitions, 1445 flow. Second operand has 3 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 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) [2022-07-22 21:20:52,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:20:52,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 700 [2022-07-22 21:20:52,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand