./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:35:09,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:35:09,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:35:09,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:35:09,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:35:09,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:35:09,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:35:09,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:35:09,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:35:09,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:35:09,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:35:09,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:35:09,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:35:09,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:35:09,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:35:09,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:35:09,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:35:09,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:35:09,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:35:09,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:35:09,173 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:35:09,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:35:09,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:35:09,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:35:09,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:35:09,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:35:09,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:35:09,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:35:09,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:35:09,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:35:09,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:35:09,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:35:09,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:35:09,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:35:09,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:35:09,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:35:09,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:35:09,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:35:09,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:35:09,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:35:09,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:35:09,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:35:09,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:35:09,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:35:09,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:35:09,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:35:09,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:35:09,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:35:09,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:35:09,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:35:09,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:35:09,225 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:35:09,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:35:09,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:35:09,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:35:09,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:35:09,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:35:09,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:35:09,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:35:09,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:35:09,227 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:35:09,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:35:09,227 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:35:09,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:35:09,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:35:09,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:35:09,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:35:09,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:35:09,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:35:09,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:35:09,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:35:09,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:35:09,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:35:09,230 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:35:09,230 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:35:09,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:35:09,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-07-22 21:35:09,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:35:09,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:35:09,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:35:09,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:35:09,479 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:35:09,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-07-22 21:35:09,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ec5b627/960ab980d53a46269e4486477ef5405f/FLAGd033df2b3 [2022-07-22 21:35:10,092 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:35:10,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-07-22 21:35:10,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ec5b627/960ab980d53a46269e4486477ef5405f/FLAGd033df2b3 [2022-07-22 21:35:10,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ec5b627/960ab980d53a46269e4486477ef5405f [2022-07-22 21:35:10,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:35:10,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:35:10,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:35:10,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:35:10,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:35:10,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:35:10" (1/1) ... [2022-07-22 21:35:10,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104005ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:10, skipping insertion in model container [2022-07-22 21:35:10,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:35:10" (1/1) ... [2022-07-22 21:35:10,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:35:10,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:35:10,855 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/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-07-22 21:35:10,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:35:10,912 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:35:10,955 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/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-07-22 21:35:10,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:35:11,029 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:35:11,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11 WrapperNode [2022-07-22 21:35:11,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:35:11,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:35:11,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:35:11,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:35:11,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,117 INFO L137 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 204 [2022-07-22 21:35:11,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:35:11,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:35:11,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:35:11,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:35:11,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:35:11,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:35:11,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:35:11,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:35:11,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (1/1) ... [2022-07-22 21:35:11,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:35:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:35:11,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:35:11,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:35:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:35:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 21:35:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-07-22 21:35:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-07-22 21:35:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:35:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:35:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-22 21:35:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-22 21:35:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:35:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:35:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 21:35:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:35:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:35:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:35:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:35:11,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:35:11,255 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:35:11,432 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:35:11,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:35:11,780 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:35:11,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:35:11,788 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-22 21:35:11,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:35:11 BoogieIcfgContainer [2022-07-22 21:35:11,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:35:11,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:35:11,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:35:11,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:35:11,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:35:10" (1/3) ... [2022-07-22 21:35:11,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779f6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:35:11, skipping insertion in model container [2022-07-22 21:35:11,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:35:11" (2/3) ... [2022-07-22 21:35:11,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779f6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:35:11, skipping insertion in model container [2022-07-22 21:35:11,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:35:11" (3/3) ... [2022-07-22 21:35:11,798 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-07-22 21:35:11,802 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:35:11,810 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:35:11,811 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:35:11,811 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:35:11,917 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-22 21:35:11,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 220 transitions, 462 flow [2022-07-22 21:35:12,124 INFO L129 PetriNetUnfolder]: 52/414 cut-off events. [2022-07-22 21:35:12,125 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-07-22 21:35:12,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 414 events. 52/414 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1661 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-07-22 21:35:12,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 220 transitions, 462 flow [2022-07-22 21:35:12,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 218 transitions, 452 flow [2022-07-22 21:35:12,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:35:12,169 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@42e5f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cd92cc [2022-07-22 21:35:12,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:35:12,188 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2022-07-22 21:35:12,188 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:35:12,188 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:35:12,189 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:35:12,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:35:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:35:12,194 INFO L85 PathProgramCache]: Analyzing trace with hash 621174435, now seen corresponding path program 1 times [2022-07-22 21:35:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:35:12,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009825372] [2022-07-22 21:35:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:35:12,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:35:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:12,404 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:35:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:12,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:35:12,503 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:35:12,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-22 21:35:12,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-22 21:35:12,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:35:12,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-22 21:35:12,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:35:12,508 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:35:12,511 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:35:12,511 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-22 21:35:12,594 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-07-22 21:35:12,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 307 places, 340 transitions, 728 flow [2022-07-22 21:35:12,881 INFO L129 PetriNetUnfolder]: 191/1219 cut-off events. [2022-07-22 21:35:12,881 INFO L130 PetriNetUnfolder]: For 72/100 co-relation queries the response was YES. [2022-07-22 21:35:12,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 191/1219 cut-off events. For 72/100 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7632 event pairs, 2 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 769. Up to 32 conditions per place. [2022-07-22 21:35:12,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 340 transitions, 728 flow [2022-07-22 21:35:12,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 340 transitions, 728 flow [2022-07-22 21:35:12,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:35:12,918 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@42e5f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cd92cc [2022-07-22 21:35:12,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:35:12,947 INFO L129 PetriNetUnfolder]: 17/251 cut-off events. [2022-07-22 21:35:12,948 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:35:12,948 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:35:12,948 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:35:12,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:35:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:35:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1276034956, now seen corresponding path program 1 times [2022-07-22 21:35:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:35:12,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986515657] [2022-07-22 21:35:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:35:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:35:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:13,027 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:35:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:13,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:35:13,075 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:35:13,076 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-22 21:35:13,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-22 21:35:13,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-22 21:35:13,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-22 21:35:13,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-22 21:35:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:35:13,077 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:35:13,078 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:35:13,078 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-22 21:35:13,158 INFO L135 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-07-22 21:35:13,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 412 places, 460 transitions, 998 flow [2022-07-22 21:35:14,303 INFO L129 PetriNetUnfolder]: 664/3388 cut-off events. [2022-07-22 21:35:14,303 INFO L130 PetriNetUnfolder]: For 419/475 co-relation queries the response was YES. [2022-07-22 21:35:14,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 3388 events. 664/3388 cut-off events. For 419/475 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26264 event pairs, 64 based on Foata normal form. 0/2886 useless extension candidates. Maximal degree in co-relation 2215. Up to 192 conditions per place. [2022-07-22 21:35:14,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 460 transitions, 998 flow [2022-07-22 21:35:14,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 460 transitions, 998 flow [2022-07-22 21:35:14,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:35:14,476 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@42e5f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cd92cc [2022-07-22 21:35:14,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 21:35:14,538 INFO L129 PetriNetUnfolder]: 44/517 cut-off events. [2022-07-22 21:35:14,539 INFO L130 PetriNetUnfolder]: For 22/36 co-relation queries the response was YES. [2022-07-22 21:35:14,539 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:35:14,539 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:35:14,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:35:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:35:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1807325972, now seen corresponding path program 1 times [2022-07-22 21:35:14,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:35:14,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373010402] [2022-07-22 21:35:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:35:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:35:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:14,618 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:35:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:14,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:35:14,658 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:35:14,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-22 21:35:14,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-22 21:35:14,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-22 21:35:14,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-22 21:35:14,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-22 21:35:14,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-22 21:35:14,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:35:14,660 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:35:14,661 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:35:14,661 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-22 21:35:14,739 INFO L135 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-07-22 21:35:14,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 517 places, 580 transitions, 1272 flow [2022-07-22 21:35:18,754 INFO L129 PetriNetUnfolder]: 2659/10701 cut-off events. [2022-07-22 21:35:18,755 INFO L130 PetriNetUnfolder]: For 2144/2239 co-relation queries the response was YES. [2022-07-22 21:35:19,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12866 conditions, 10701 events. 2659/10701 cut-off events. For 2144/2239 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 98820 event pairs, 626 based on Foata normal form. 0/9268 useless extension candidates. Maximal degree in co-relation 6876. Up to 1024 conditions per place. [2022-07-22 21:35:19,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 517 places, 580 transitions, 1272 flow [2022-07-22 21:35:19,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 580 transitions, 1272 flow [2022-07-22 21:35:19,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:35:19,540 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@42e5f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cd92cc [2022-07-22 21:35:19,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:35:19,590 INFO L129 PetriNetUnfolder]: 46/534 cut-off events. [2022-07-22 21:35:19,590 INFO L130 PetriNetUnfolder]: For 25/39 co-relation queries the response was YES. [2022-07-22 21:35:19,590 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:35:19,591 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:35:19,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:35:19,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:35:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1567120559, now seen corresponding path program 1 times [2022-07-22 21:35:19,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:35:19,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755082672] [2022-07-22 21:35:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:35:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:35:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:35:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:35:19,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:35:19,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755082672] [2022-07-22 21:35:19,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755082672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:35:19,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:35:19,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:35:19,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037896431] [2022-07-22 21:35:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:35:19,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:35:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:35:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:35:19,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:35:19,769 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 493 out of 580 [2022-07-22 21:35:19,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 580 transitions, 1272 flow. Second operand has 3 states, 3 states have (on average 494.6666666666667) internal successors, (1484), 3 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:35:19,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:35:19,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 493 of 580 [2022-07-22 21:35:19,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:35:23,826 INFO L129 PetriNetUnfolder]: 1860/9545 cut-off events. [2022-07-22 21:35:23,827 INFO L130 PetriNetUnfolder]: For 6471/7978 co-relation queries the response was YES. [2022-07-22 21:35:24,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13785 conditions, 9545 events. 1860/9545 cut-off events. For 6471/7978 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 92470 event pairs, 324 based on Foata normal form. 12758/21645 useless extension candidates. Maximal degree in co-relation 7288. Up to 2088 conditions per place. [2022-07-22 21:35:24,198 INFO L132 encePairwiseOnDemand]: 525/580 looper letters, 33 selfloop transitions, 2 changer transitions 0/528 dead transitions. [2022-07-22 21:35:24,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 528 transitions, 1238 flow [2022-07-22 21:35:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:35:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:35:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1568 transitions. [2022-07-22 21:35:24,219 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9011494252873563 [2022-07-22 21:35:24,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1568 transitions. [2022-07-22 21:35:24,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1568 transitions. [2022-07-22 21:35:24,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:35:24,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1568 transitions. [2022-07-22 21:35:24,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:35:24,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:35:24,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:35:24,246 INFO L186 Difference]: Start difference. First operand has 517 places, 580 transitions, 1272 flow. Second operand 3 states and 1568 transitions. [2022-07-22 21:35:24,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 528 transitions, 1238 flow [2022-07-22 21:35:24,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 528 transitions, 1238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:35:24,276 INFO L242 Difference]: Finished difference. Result has 516 places, 525 transitions, 1172 flow [2022-07-22 21:35:24,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1172, PETRI_PLACES=516, PETRI_TRANSITIONS=525} [2022-07-22 21:35:24,282 INFO L279 CegarLoopForPetriNet]: 517 programPoint places, -1 predicate places. [2022-07-22 21:35:24,282 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 525 transitions, 1172 flow [2022-07-22 21:35:24,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 494.6666666666667) internal successors, (1484), 3 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:35:24,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:35:24,284 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:35:24,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:35:24,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:35:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:35:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash 918640571, now seen corresponding path program 1 times [2022-07-22 21:35:24,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:35:24,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798624082] [2022-07-22 21:35:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:35:24,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:35:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:24,330 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:35:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:35:24,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:35:24,390 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:35:24,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-22 21:35:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-22 21:35:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-22 21:35:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-22 21:35:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-22 21:35:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-22 21:35:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-22 21:35:24,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:35:24,393 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:35:24,394 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:35:24,394 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-22 21:35:24,491 INFO L135 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-07-22 21:35:24,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 622 places, 700 transitions, 1550 flow [2022-07-22 21:35:40,694 INFO L129 PetriNetUnfolder]: 11792/39142 cut-off events. [2022-07-22 21:35:40,695 INFO L130 PetriNetUnfolder]: For 10450/10586 co-relation queries the response was YES. [2022-07-22 21:35:43,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49568 conditions, 39142 events. 11792/39142 cut-off events. For 10450/10586 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 428792 event pairs, 4296 based on Foata normal form. 0/34440 useless extension candidates. Maximal degree in co-relation 24907. Up to 5120 conditions per place. [2022-07-22 21:35:43,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 622 places, 700 transitions, 1550 flow [2022-07-22 21:35:44,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 622 places, 700 transitions, 1550 flow [2022-07-22 21:35:44,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:35:44,655 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@42e5f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cd92cc [2022-07-22 21:35:44,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-22 21:35:44,707 INFO L129 PetriNetUnfolder]: 49/555 cut-off events. [2022-07-22 21:35:44,708 INFO L130 PetriNetUnfolder]: For 25/39 co-relation queries the response was YES. [2022-07-22 21:35:44,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:35:44,708 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:35:44,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-22 21:35:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:35:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -212499005, now seen corresponding path program 1 times [2022-07-22 21:35:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:35:44,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509905569] [2022-07-22 21:35:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:35:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:35:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:35:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:35:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:35:44,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509905569] [2022-07-22 21:35:44,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509905569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:35:44,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:35:44,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:35:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358386554] [2022-07-22 21:35:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:35:44,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:35:44,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:35:44,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:35:44,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:35:44,778 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 594 out of 700 [2022-07-22 21:35:44,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 700 transitions, 1550 flow. Second operand has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:35:44,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:35:44,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 594 of 700 [2022-07-22 21:35:44,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:35:59,883 INFO L129 PetriNetUnfolder]: 9321/36222 cut-off events. [2022-07-22 21:35:59,884 INFO L130 PetriNetUnfolder]: For 31268/34086 co-relation queries the response was YES. [2022-07-22 21:36:01,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56923 conditions, 36222 events. 9321/36222 cut-off events. For 31268/34086 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 416170 event pairs, 2174 based on Foata normal form. 63460/97401 useless extension candidates. Maximal degree in co-relation 28152. Up to 10295 conditions per place. [2022-07-22 21:36:02,368 INFO L132 encePairwiseOnDemand]: 633/700 looper letters, 39 selfloop transitions, 2 changer transitions 0/635 dead transitions. [2022-07-22 21:36:02,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 635 transitions, 1502 flow [2022-07-22 21:36:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:36:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:36:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1889 transitions. [2022-07-22 21:36:02,373 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8995238095238095 [2022-07-22 21:36:02,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1889 transitions. [2022-07-22 21:36:02,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1889 transitions. [2022-07-22 21:36:02,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:36:02,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1889 transitions. [2022-07-22 21:36:02,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:36:02,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:36:02,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:36:02,384 INFO L186 Difference]: Start difference. First operand has 622 places, 700 transitions, 1550 flow. Second operand 3 states and 1889 transitions. [2022-07-22 21:36:02,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 635 transitions, 1502 flow [2022-07-22 21:36:02,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 635 transitions, 1502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:36:02,403 INFO L242 Difference]: Finished difference. Result has 620 places, 632 transitions, 1424 flow [2022-07-22 21:36:02,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1424, PETRI_PLACES=620, PETRI_TRANSITIONS=632} [2022-07-22 21:36:02,405 INFO L279 CegarLoopForPetriNet]: 622 programPoint places, -2 predicate places. [2022-07-22 21:36:02,405 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 632 transitions, 1424 flow [2022-07-22 21:36:02,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:36:02,407 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:36:02,407 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:36:02,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:36:02,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-22 21:36:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:36:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash -874421531, now seen corresponding path program 1 times [2022-07-22 21:36:02,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:36:02,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707532866] [2022-07-22 21:36:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:36:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:36:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:36:02,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:36:02,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707532866] [2022-07-22 21:36:02,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707532866] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 21:36:02,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168141537] [2022-07-22 21:36:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:36:02,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 21:36:02,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:36:02,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 21:36:02,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process