./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 6c24879c 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-?-6c24879 [2022-07-12 10:03:35,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:03:35,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:03:35,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:03:35,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:03:35,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:03:35,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:03:35,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:03:35,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:03:35,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:03:35,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:03:35,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:03:35,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:03:35,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:03:35,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:03:35,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:03:35,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:03:35,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:03:35,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:03:35,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:03:35,831 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:03:35,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:03:35,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:03:35,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:03:35,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:03:35,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:03:35,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:03:35,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:03:35,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:03:35,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:03:35,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:03:35,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:03:35,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:03:35,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:03:35,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:03:35,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:03:35,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:03:35,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:03:35,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:03:35,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:03:35,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:03:35,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:03:35,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:03:35,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:03:35,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:03:35,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:03:35,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:03:35,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:03:35,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:03:35,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:03:35,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:03:35,882 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:03:35,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:03:35,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:03:35,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:03:35,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:03:35,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:03:35,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:03:35,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:03:35,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:03:35,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:03:35,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:03:35,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:03:35,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:03:35,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:03:35,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:03:35,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:03:35,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:03:35,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:03:35,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:03:35,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:03:35,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:03:35,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:03:35,887 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:03:35,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:03:35,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:03:35,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adac70a9b891a5462c4bee71a2751021c9d437d73a002d25ad244a8f2ad465c8 [2022-07-12 10:03:36,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:03:36,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:03:36,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:03:36,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:03:36,134 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:03:36,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i [2022-07-12 10:03:36,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f11b51dd/48f81bcde5ed434cb92cdbad5fb9c4a2/FLAG2000048d4 [2022-07-12 10:03:36,574 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:03:36,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/42_FreeBSD_rdma_addr_sliced.i [2022-07-12 10:03:36,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f11b51dd/48f81bcde5ed434cb92cdbad5fb9c4a2/FLAG2000048d4 [2022-07-12 10:03:36,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f11b51dd/48f81bcde5ed434cb92cdbad5fb9c4a2 [2022-07-12 10:03:36,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:03:36,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:03:36,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:03:36,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:03:36,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:03:36,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:03:36" (1/1) ... [2022-07-12 10:03:36,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480e97c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:36, skipping insertion in model container [2022-07-12 10:03:36,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:03:36" (1/1) ... [2022-07-12 10:03:36,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:03:36,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:03:36,909 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] [2022-07-12 10:03:36,914 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] [2022-07-12 10:03:36,916 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] [2022-07-12 10:03:36,919 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] [2022-07-12 10:03:36,922 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] [2022-07-12 10:03:36,924 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] [2022-07-12 10:03:36,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:03:36,940 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:03:36,981 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] [2022-07-12 10:03:36,986 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] [2022-07-12 10:03:36,989 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] [2022-07-12 10:03:36,989 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] [2022-07-12 10:03:36,991 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] [2022-07-12 10:03:36,996 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] [2022-07-12 10:03:36,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:03:37,026 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:03:37,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37 WrapperNode [2022-07-12 10:03:37,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:03:37,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:03:37,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:03:37,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:03:37,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,089 INFO L137 Inliner]: procedures = 176, calls = 35, calls flagged for inlining = 27, calls inlined = 41, statements flattened = 232 [2022-07-12 10:03:37,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:03:37,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:03:37,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:03:37,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:03:37,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:03:37,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:03:37,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:03:37,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:03:37,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (1/1) ... [2022-07-12 10:03:37,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:03:37,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:03:37,164 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) [2022-07-12 10:03:37,181 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 [2022-07-12 10:03:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-12 10:03:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-12 10:03:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:03:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:03:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:03:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:03:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:03:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:03:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:03:37,202 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:03:37,328 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:03:37,329 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:03:37,588 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:03:37,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:03:37,727 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 10:03:37,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:03:37 BoogieIcfgContainer [2022-07-12 10:03:37,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:03:37,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:03:37,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:03:37,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:03:37,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:03:36" (1/3) ... [2022-07-12 10:03:37,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fde3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:03:37, skipping insertion in model container [2022-07-12 10:03:37,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:03:37" (2/3) ... [2022-07-12 10:03:37,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fde3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:03:37, skipping insertion in model container [2022-07-12 10:03:37,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:03:37" (3/3) ... [2022-07-12 10:03:37,736 INFO L111 eAbstractionObserver]: Analyzing ICFG 42_FreeBSD_rdma_addr_sliced.i [2022-07-12 10:03:37,741 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:03:37,747 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:03:37,748 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-12 10:03:37,748 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:03:37,798 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:37,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 164 transitions, 333 flow [2022-07-12 10:03:37,865 INFO L129 PetriNetUnfolder]: 26/175 cut-off events. [2022-07-12 10:03:37,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:03:37,871 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. [2022-07-12 10:03:37,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 164 transitions, 333 flow [2022-07-12 10:03:37,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 164 transitions, 333 flow [2022-07-12 10:03:37,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:37,887 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@15ade9a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69d35190 [2022-07-12 10:03:37,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-12 10:03:37,895 INFO L129 PetriNetUnfolder]: 3/51 cut-off events. [2022-07-12 10:03:37,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:03:37,896 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:37,897 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] [2022-07-12 10:03:37,897 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)] === [2022-07-12 10:03:37,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash 297090286, now seen corresponding path program 1 times [2022-07-12 10:03:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:37,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164727731] [2022-07-12 10:03:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:38,025 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:03:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:38,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:03:38,077 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:03:38,079 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-07-12 10:03:38,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2022-07-12 10:03:38,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2022-07-12 10:03:38,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2022-07-12 10:03:38,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2022-07-12 10:03:38,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2022-07-12 10:03:38,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2022-07-12 10:03:38,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2022-07-12 10:03:38,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2022-07-12 10:03:38,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2022-07-12 10:03:38,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2022-07-12 10:03:38,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2022-07-12 10:03:38,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2022-07-12 10:03:38,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:03:38,084 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 10:03:38,089 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:03:38,089 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-12 10:03:38,139 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:38,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 298 transitions, 608 flow [2022-07-12 10:03:38,218 INFO L129 PetriNetUnfolder]: 51/322 cut-off events. [2022-07-12 10:03:38,219 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:03:38,227 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. [2022-07-12 10:03:38,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 298 transitions, 608 flow [2022-07-12 10:03:38,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 298 transitions, 608 flow [2022-07-12 10:03:38,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:38,237 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@15ade9a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69d35190 [2022-07-12 10:03:38,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-07-12 10:03:38,251 INFO L129 PetriNetUnfolder]: 6/88 cut-off events. [2022-07-12 10:03:38,251 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:03:38,252 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:38,252 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] [2022-07-12 10:03:38,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2022-07-12 10:03:38,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1188948045, now seen corresponding path program 1 times [2022-07-12 10:03:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:38,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253039813] [2022-07-12 10:03:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:38,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253039813] [2022-07-12 10:03:38,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253039813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:38,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:38,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:38,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626635608] [2022-07-12 10:03:38,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:38,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:38,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:38,408 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 298 [2022-07-12 10:03:38,412 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) [2022-07-12 10:03:38,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:38,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 298 [2022-07-12 10:03:38,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:38,738 INFO L129 PetriNetUnfolder]: 236/1704 cut-off events. [2022-07-12 10:03:38,738 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-07-12 10:03:38,745 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. [2022-07-12 10:03:38,756 INFO L132 encePairwiseOnDemand]: 232/298 looper letters, 18 selfloop transitions, 32 changer transitions 0/220 dead transitions. [2022-07-12 10:03:38,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 220 transitions, 557 flow [2022-07-12 10:03:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-07-12 10:03:38,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7751677852348994 [2022-07-12 10:03:38,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-07-12 10:03:38,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-07-12 10:03:38,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:38,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-07-12 10:03:38,780 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) [2022-07-12 10:03:38,788 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) [2022-07-12 10:03:38,788 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) [2022-07-12 10:03:38,790 INFO L186 Difference]: Start difference. First operand has 254 places, 298 transitions, 608 flow. Second operand 3 states and 693 transitions. [2022-07-12 10:03:38,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 220 transitions, 557 flow [2022-07-12 10:03:38,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 220 transitions, 555 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-07-12 10:03:38,799 INFO L242 Difference]: Finished difference. Result has 208 places, 219 transitions, 512 flow [2022-07-12 10:03:38,801 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} [2022-07-12 10:03:38,804 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -46 predicate places. [2022-07-12 10:03:38,805 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 219 transitions, 512 flow [2022-07-12 10:03:38,805 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) [2022-07-12 10:03:38,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:38,806 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] [2022-07-12 10:03:38,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:03:38,806 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)] === [2022-07-12 10:03:38,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash 971148267, now seen corresponding path program 1 times [2022-07-12 10:03:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:38,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583370682] [2022-07-12 10:03:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:38,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:38,846 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:03:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:38,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:03:38,874 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:03:38,875 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-07-12 10:03:38,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (17 of 19 remaining) [2022-07-12 10:03:38,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (16 of 19 remaining) [2022-07-12 10:03:38,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (15 of 19 remaining) [2022-07-12 10:03:38,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (14 of 19 remaining) [2022-07-12 10:03:38,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (13 of 19 remaining) [2022-07-12 10:03:38,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (12 of 19 remaining) [2022-07-12 10:03:38,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 19 remaining) [2022-07-12 10:03:38,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 19 remaining) [2022-07-12 10:03:38,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 19 remaining) [2022-07-12 10:03:38,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 19 remaining) [2022-07-12 10:03:38,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 19 remaining) [2022-07-12 10:03:38,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 19 remaining) [2022-07-12 10:03:38,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 19 remaining) [2022-07-12 10:03:38,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 19 remaining) [2022-07-12 10:03:38,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 19 remaining) [2022-07-12 10:03:38,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 19 remaining) [2022-07-12 10:03:38,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 19 remaining) [2022-07-12 10:03:38,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 19 remaining) [2022-07-12 10:03:38,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:03:38,879 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 10:03:38,880 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:03:38,880 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-12 10:03:38,918 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:38,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 366 places, 432 transitions, 885 flow [2022-07-12 10:03:39,001 INFO L129 PetriNetUnfolder]: 76/469 cut-off events. [2022-07-12 10:03:39,002 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-12 10:03:39,009 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. [2022-07-12 10:03:39,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 432 transitions, 885 flow [2022-07-12 10:03:39,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 432 transitions, 885 flow [2022-07-12 10:03:39,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:39,024 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@15ade9a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69d35190 [2022-07-12 10:03:39,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-12 10:03:39,030 INFO L129 PetriNetUnfolder]: 5/87 cut-off events. [2022-07-12 10:03:39,030 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:03:39,030 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:39,030 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] [2022-07-12 10:03:39,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2022-07-12 10:03:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash 655897256, now seen corresponding path program 1 times [2022-07-12 10:03:39,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:39,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978848066] [2022-07-12 10:03:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:39,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978848066] [2022-07-12 10:03:39,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978848066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:39,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:39,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719817482] [2022-07-12 10:03:39,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:39,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:39,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:39,099 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 432 [2022-07-12 10:03:39,100 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) [2022-07-12 10:03:39,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:39,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 432 [2022-07-12 10:03:39,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:03:42,074 INFO L129 PetriNetUnfolder]: 3610/21421 cut-off events. [2022-07-12 10:03:42,074 INFO L130 PetriNetUnfolder]: For 2185/2185 co-relation queries the response was YES. [2022-07-12 10:03:42,223 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. [2022-07-12 10:03:42,309 INFO L132 encePairwiseOnDemand]: 334/432 looper letters, 27 selfloop transitions, 48 changer transitions 0/319 dead transitions. [2022-07-12 10:03:42,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 319 transitions, 821 flow [2022-07-12 10:03:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:03:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:03:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2022-07-12 10:03:42,312 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7692901234567902 [2022-07-12 10:03:42,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2022-07-12 10:03:42,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2022-07-12 10:03:42,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:03:42,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2022-07-12 10:03:42,315 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) [2022-07-12 10:03:42,317 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) [2022-07-12 10:03:42,318 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) [2022-07-12 10:03:42,318 INFO L186 Difference]: Start difference. First operand has 366 places, 432 transitions, 885 flow. Second operand 3 states and 997 transitions. [2022-07-12 10:03:42,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 319 transitions, 821 flow [2022-07-12 10:03:42,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 319 transitions, 813 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-07-12 10:03:42,330 INFO L242 Difference]: Finished difference. Result has 299 places, 317 transitions, 745 flow [2022-07-12 10:03:42,330 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} [2022-07-12 10:03:42,331 INFO L279 CegarLoopForPetriNet]: 366 programPoint places, -67 predicate places. [2022-07-12 10:03:42,331 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 317 transitions, 745 flow [2022-07-12 10:03:42,332 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) [2022-07-12 10:03:42,332 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:42,332 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] [2022-07-12 10:03:42,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:03:42,332 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)] === [2022-07-12 10:03:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:42,333 INFO L85 PathProgramCache]: Analyzing trace with hash 878227405, now seen corresponding path program 1 times [2022-07-12 10:03:42,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:42,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635259741] [2022-07-12 10:03:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:42,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:42,347 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:03:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:03:42,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:03:42,358 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:03:42,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-07-12 10:03:42,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 25 remaining) [2022-07-12 10:03:42,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (22 of 25 remaining) [2022-07-12 10:03:42,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (21 of 25 remaining) [2022-07-12 10:03:42,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (20 of 25 remaining) [2022-07-12 10:03:42,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (19 of 25 remaining) [2022-07-12 10:03:42,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (18 of 25 remaining) [2022-07-12 10:03:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (17 of 25 remaining) [2022-07-12 10:03:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (16 of 25 remaining) [2022-07-12 10:03:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (15 of 25 remaining) [2022-07-12 10:03:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (14 of 25 remaining) [2022-07-12 10:03:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (13 of 25 remaining) [2022-07-12 10:03:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (12 of 25 remaining) [2022-07-12 10:03:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 25 remaining) [2022-07-12 10:03:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 25 remaining) [2022-07-12 10:03:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 25 remaining) [2022-07-12 10:03:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 25 remaining) [2022-07-12 10:03:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 25 remaining) [2022-07-12 10:03:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 25 remaining) [2022-07-12 10:03:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 25 remaining) [2022-07-12 10:03:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 25 remaining) [2022-07-12 10:03:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 25 remaining) [2022-07-12 10:03:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 25 remaining) [2022-07-12 10:03:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 25 remaining) [2022-07-12 10:03:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 25 remaining) [2022-07-12 10:03:42,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:03:42,362 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 10:03:42,363 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:03:42,363 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-12 10:03:42,397 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:03:42,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 566 transitions, 1164 flow [2022-07-12 10:03:42,542 INFO L129 PetriNetUnfolder]: 101/616 cut-off events. [2022-07-12 10:03:42,543 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-12 10:03:42,552 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. [2022-07-12 10:03:42,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 566 transitions, 1164 flow [2022-07-12 10:03:42,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 478 places, 566 transitions, 1164 flow [2022-07-12 10:03:42,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:03:42,563 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@15ade9a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69d35190 [2022-07-12 10:03:42,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-07-12 10:03:42,566 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2022-07-12 10:03:42,566 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:03:42,567 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:03:42,567 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] [2022-07-12 10:03:42,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2022-07-12 10:03:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:03:42,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2108271208, now seen corresponding path program 1 times [2022-07-12 10:03:42,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:03:42,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302222405] [2022-07-12 10:03:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:03:42,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:03:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:03:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:03:42,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:03:42,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302222405] [2022-07-12 10:03:42,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302222405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:03:42,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:03:42,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:03:42,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265140939] [2022-07-12 10:03:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:03:42,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:03:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:03:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:03:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:03:42,595 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 566 [2022-07-12 10:03:42,596 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) [2022-07-12 10:03:42,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:03:42,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 566 [2022-07-12 10:03:42,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:04:18,644 INFO L129 PetriNetUnfolder]: 46041/246687 cut-off events. [2022-07-12 10:04:18,645 INFO L130 PetriNetUnfolder]: For 45095/45095 co-relation queries the response was YES. [2022-07-12 10:04:21,863 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. [2022-07-12 10:04:23,368 INFO L132 encePairwiseOnDemand]: 436/566 looper letters, 36 selfloop transitions, 64 changer transitions 0/418 dead transitions. [2022-07-12 10:04:23,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 418 transitions, 1089 flow [2022-07-12 10:04:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:04:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:04:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1301 transitions. [2022-07-12 10:04:23,372 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7661955241460542 [2022-07-12 10:04:23,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1301 transitions. [2022-07-12 10:04:23,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1301 transitions. [2022-07-12 10:04:23,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:04:23,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1301 transitions. [2022-07-12 10:04:23,375 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) [2022-07-12 10:04:23,377 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) [2022-07-12 10:04:23,378 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) [2022-07-12 10:04:23,379 INFO L186 Difference]: Start difference. First operand has 478 places, 566 transitions, 1164 flow. Second operand 3 states and 1301 transitions. [2022-07-12 10:04:23,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 418 transitions, 1089 flow [2022-07-12 10:04:23,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 418 transitions, 1071 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-07-12 10:04:23,399 INFO L242 Difference]: Finished difference. Result has 390 places, 415 transitions, 978 flow [2022-07-12 10:04:23,399 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} [2022-07-12 10:04:23,401 INFO L279 CegarLoopForPetriNet]: 478 programPoint places, -88 predicate places. [2022-07-12 10:04:23,401 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 415 transitions, 978 flow [2022-07-12 10:04:23,402 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) [2022-07-12 10:04:23,402 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:04:23,402 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] [2022-07-12 10:04:23,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:04:23,403 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)] === [2022-07-12 10:04:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:04:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1627373562, now seen corresponding path program 1 times [2022-07-12 10:04:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:04:23,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186277591] [2022-07-12 10:04:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:04:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:04:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:04:23,425 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 10:04:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 10:04:23,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 10:04:23,456 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 10:04:23,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-07-12 10:04:23,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (29 of 31 remaining) [2022-07-12 10:04:23,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (28 of 31 remaining) [2022-07-12 10:04:23,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (27 of 31 remaining) [2022-07-12 10:04:23,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (26 of 31 remaining) [2022-07-12 10:04:23,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (25 of 31 remaining) [2022-07-12 10:04:23,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (24 of 31 remaining) [2022-07-12 10:04:23,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (23 of 31 remaining) [2022-07-12 10:04:23,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (22 of 31 remaining) [2022-07-12 10:04:23,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (21 of 31 remaining) [2022-07-12 10:04:23,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (20 of 31 remaining) [2022-07-12 10:04:23,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (19 of 31 remaining) [2022-07-12 10:04:23,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (18 of 31 remaining) [2022-07-12 10:04:23,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (17 of 31 remaining) [2022-07-12 10:04:23,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (16 of 31 remaining) [2022-07-12 10:04:23,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (15 of 31 remaining) [2022-07-12 10:04:23,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (14 of 31 remaining) [2022-07-12 10:04:23,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (13 of 31 remaining) [2022-07-12 10:04:23,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (12 of 31 remaining) [2022-07-12 10:04:23,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 31 remaining) [2022-07-12 10:04:23,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (10 of 31 remaining) [2022-07-12 10:04:23,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (9 of 31 remaining) [2022-07-12 10:04:23,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 31 remaining) [2022-07-12 10:04:23,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 31 remaining) [2022-07-12 10:04:23,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 31 remaining) [2022-07-12 10:04:23,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 31 remaining) [2022-07-12 10:04:23,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (4 of 31 remaining) [2022-07-12 10:04:23,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 31 remaining) [2022-07-12 10:04:23,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 31 remaining) [2022-07-12 10:04:23,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (1 of 31 remaining) [2022-07-12 10:04:23,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 31 remaining) [2022-07-12 10:04:23,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:04:23,462 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 10:04:23,462 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-12 10:04:23,462 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-12 10:04:23,516 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-12 10:04:23,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 590 places, 700 transitions, 1445 flow [2022-07-12 10:04:23,662 INFO L129 PetriNetUnfolder]: 126/763 cut-off events. [2022-07-12 10:04:23,663 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-07-12 10:04:23,690 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. [2022-07-12 10:04:23,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 590 places, 700 transitions, 1445 flow [2022-07-12 10:04:23,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 590 places, 700 transitions, 1445 flow [2022-07-12 10:04:23,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:04:23,708 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@15ade9a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69d35190 [2022-07-12 10:04:23,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-07-12 10:04:23,712 INFO L129 PetriNetUnfolder]: 7/88 cut-off events. [2022-07-12 10:04:23,712 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:04:23,712 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:04:23,712 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] [2022-07-12 10:04:23,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err4ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 33 more)] === [2022-07-12 10:04:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:04:23,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1252289374, now seen corresponding path program 1 times [2022-07-12 10:04:23,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:04:23,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399521989] [2022-07-12 10:04:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:04:23,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:04:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:04:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:04:23,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:04:23,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399521989] [2022-07-12 10:04:23,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399521989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:04:23,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:04:23,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:04:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244655190] [2022-07-12 10:04:23,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:04:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:04:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:04:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:04:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:04:23,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 700 [2022-07-12 10:04:23,740 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) [2022-07-12 10:04:23,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:04:23,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 700 [2022-07-12 10:04:23,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand