./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/ldv-races/race-1_2-join.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 b74577f7b762bc71b4ec24b3f1b1d4417fb82a2d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 16:03:07,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 16:03:07,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 16:03:07,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 16:03:07,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 16:03:07,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 16:03:07,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 16:03:07,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 16:03:07,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 16:03:07,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 16:03:07,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 16:03:07,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 16:03:07,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 16:03:07,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 16:03:07,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 16:03:07,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 16:03:07,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 16:03:07,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 16:03:07,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 16:03:07,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 16:03:07,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 16:03:07,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 16:03:07,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 16:03:07,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 16:03:07,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 16:03:07,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 16:03:07,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 16:03:07,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 16:03:07,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 16:03:07,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 16:03:07,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 16:03:07,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 16:03:07,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 16:03:07,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 16:03:07,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 16:03:07,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 16:03:07,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 16:03:07,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 16:03:07,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 16:03:07,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 16:03:07,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 16:03:07,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 16:03:07,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 16:03:07,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 16:03:07,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 16:03:07,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 16:03:07,462 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 16:03:07,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 16:03:07,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 16:03:07,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 16:03:07,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 16:03:07,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 16:03:07,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 16:03:07,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 16:03:07,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 16:03:07,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 16:03:07,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 16:03:07,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 16:03:07,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 16:03:07,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 16:03:07,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 16:03:07,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 16:03:07,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 16:03:07,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 16:03:07,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 16:03:07,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 16:03:07,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 16:03:07,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 16:03:07,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 16:03:07,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 16:03:07,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b74577f7b762bc71b4ec24b3f1b1d4417fb82a2d [2021-07-05 16:03:07,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 16:03:07,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 16:03:07,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 16:03:07,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 16:03:07,767 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 16:03:07,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-07-05 16:03:07,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ceb43f7/082193936c114814a591f898b0d90606/FLAGd182be620 [2021-07-05 16:03:08,323 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 16:03:08,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-07-05 16:03:08,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ceb43f7/082193936c114814a591f898b0d90606/FLAGd182be620 [2021-07-05 16:03:08,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ceb43f7/082193936c114814a591f898b0d90606 [2021-07-05 16:03:08,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 16:03:08,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 16:03:08,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 16:03:08,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 16:03:08,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 16:03:08,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 04:03:08" (1/1) ... [2021-07-05 16:03:08,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f63922a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:08, skipping insertion in model container [2021-07-05 16:03:08,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 04:03:08" (1/1) ... [2021-07-05 16:03:08,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 16:03:08,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 16:03:09,314 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-07-05 16:03:09,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 16:03:09,349 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 16:03:09,411 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-07-05 16:03:09,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 16:03:09,580 INFO L208 MainTranslator]: Completed translation [2021-07-05 16:03:09,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09 WrapperNode [2021-07-05 16:03:09,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 16:03:09,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 16:03:09,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 16:03:09,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 16:03:09,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 16:03:09,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 16:03:09,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 16:03:09,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 16:03:09,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 16:03:09,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 16:03:09,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 16:03:09,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 16:03:09,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (1/1) ... [2021-07-05 16:03:09,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 16:03:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 16:03:09,754 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) [2021-07-05 16:03:09,772 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 [2021-07-05 16:03:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-05 16:03:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 16:03:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-05 16:03:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-05 16:03:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-07-05 16:03:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-07-05 16:03:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 16:03:09,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 16:03:09,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 16:03:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-05 16:03:09,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-05 16:03:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-05 16:03:09,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 16:03:09,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-05 16:03:10,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 16:03:10,304 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-07-05 16:03:10,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 04:03:10 BoogieIcfgContainer [2021-07-05 16:03:10,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 16:03:10,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 16:03:10,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 16:03:10,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 16:03:10,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 04:03:08" (1/3) ... [2021-07-05 16:03:10,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b967f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 04:03:10, skipping insertion in model container [2021-07-05 16:03:10,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 04:03:09" (2/3) ... [2021-07-05 16:03:10,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b967f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 04:03:10, skipping insertion in model container [2021-07-05 16:03:10,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 04:03:10" (3/3) ... [2021-07-05 16:03:10,314 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-07-05 16:03:10,318 WARN L144 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-05 16:03:10,318 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 16:03:10,319 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-07-05 16:03:10,319 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-05 16:03:10,343 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,343 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,343 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,343 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,343 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,343 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,344 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,344 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,344 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,344 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,344 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,344 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,345 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,346 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,346 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,347 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,347 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,347 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 16:03:10,351 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-07-05 16:03:10,378 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 16:03:10,382 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 16:03:10,382 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 16:03:10,390 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 16:03:10,397 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:10,399 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:10,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:10,424 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-07-05 16:03:10,424 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-07-05 16:03:10,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2021-07-05 16:03:10,427 INFO L116 LiptonReduction]: Number of co-enabled transitions 252 [2021-07-05 16:03:12,914 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-07-05 16:03:13,180 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-07-05 16:03:13,615 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-07-05 16:03:13,833 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-07-05 16:03:13,955 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-07-05 16:03:14,066 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-07-05 16:03:14,171 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-07-05 16:03:14,345 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-07-05 16:03:14,470 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-07-05 16:03:14,472 INFO L131 LiptonReduction]: Checked pairs total: 295 [2021-07-05 16:03:14,472 INFO L133 LiptonReduction]: Total number of compositions: 102 [2021-07-05 16:03:14,477 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-07-05 16:03:14,482 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-07-05 16:03:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-07-05 16:03:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-07-05 16:03:14,486 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:03:14,487 INFO L525 BasicCegarLoop]: trace histogram [1] [2021-07-05 16:03:14,487 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:03:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:03:14,492 INFO L82 PathProgramCache]: Analyzing trace with hash 366, now seen corresponding path program 1 times [2021-07-05 16:03:14,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:03:14,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795355307] [2021-07-05 16:03:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:03:14,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:03:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:03:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:03:14,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 16:03:14,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795355307] [2021-07-05 16:03:14,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795355307] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 16:03:14,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:03:14,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-07-05 16:03:14,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212396329] [2021-07-05 16:03:14,640 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 16:03:14,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 16:03:14,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 16:03:14,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 16:03:14,655 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-07-05 16:03:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:03:14,662 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-07-05 16:03:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 16:03:14,663 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2021-07-05 16:03:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:03:14,667 INFO L225 Difference]: With dead ends: 18 [2021-07-05 16:03:14,667 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 16:03:14,668 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 16:03:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 16:03:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 16:03:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-07-05 16:03:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 16:03:14,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1 [2021-07-05 16:03:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:03:14,683 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 16:03:14,683 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-07-05 16:03:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 16:03:14,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 16:03:14,686 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 16:03:14,686 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 16:03:14,689 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/5) [2021-07-05 16:03:14,694 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 16:03:14,700 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 16:03:14,700 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 16:03:14,705 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 16:03:14,705 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:14,706 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:14,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:14,722 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-07-05 16:03:14,724 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-07-05 16:03:14,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2021-07-05 16:03:14,729 INFO L116 LiptonReduction]: Number of co-enabled transitions 252 [2021-07-05 16:03:16,769 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-07-05 16:03:16,948 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-07-05 16:03:17,205 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-07-05 16:03:17,331 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-07-05 16:03:17,443 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-07-05 16:03:17,555 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-07-05 16:03:17,864 INFO L131 LiptonReduction]: Checked pairs total: 275 [2021-07-05 16:03:17,864 INFO L133 LiptonReduction]: Total number of compositions: 102 [2021-07-05 16:03:17,865 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-07-05 16:03:17,866 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-07-05 16:03:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-07-05 16:03:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-07-05 16:03:17,867 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:03:17,867 INFO L525 BasicCegarLoop]: trace histogram [1] [2021-07-05 16:03:17,867 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:03:17,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:03:17,868 INFO L82 PathProgramCache]: Analyzing trace with hash 471, now seen corresponding path program 1 times [2021-07-05 16:03:17,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:03:17,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148157405] [2021-07-05 16:03:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:03:17,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:03:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:03:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:03:17,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 16:03:17,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148157405] [2021-07-05 16:03:17,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148157405] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 16:03:17,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:03:17,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-07-05 16:03:17,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891632078] [2021-07-05 16:03:17,908 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 16:03:17,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 16:03:17,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 16:03:17,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 16:03:17,909 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-07-05 16:03:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:03:17,910 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-07-05 16:03:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 16:03:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2021-07-05 16:03:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:03:17,911 INFO L225 Difference]: With dead ends: 18 [2021-07-05 16:03:17,911 INFO L226 Difference]: Without dead ends: 0 [2021-07-05 16:03:17,911 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 16:03:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-05 16:03:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-05 16:03:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-07-05 16:03:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-05 16:03:17,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1 [2021-07-05 16:03:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:03:17,912 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-05 16:03:17,912 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-07-05 16:03:17,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-05 16:03:17,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 16:03:17,913 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 16:03:17,913 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 16:03:17,913 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION was SAFE (2/5) [2021-07-05 16:03:17,914 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 16:03:17,914 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 16:03:17,914 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 16:03:17,916 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 16:03:17,916 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:17,916 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:17,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-07-05 16:03:17,925 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-07-05 16:03:17,925 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-07-05 16:03:17,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2021-07-05 16:03:17,926 INFO L116 LiptonReduction]: Number of co-enabled transitions 252 [2021-07-05 16:03:20,162 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-07-05 16:03:20,428 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-07-05 16:03:20,730 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 133 [2021-07-05 16:03:20,855 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-07-05 16:03:21,067 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 136 [2021-07-05 16:03:21,174 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-07-05 16:03:21,176 INFO L131 LiptonReduction]: Checked pairs total: 279 [2021-07-05 16:03:21,176 INFO L133 LiptonReduction]: Total number of compositions: 105 [2021-07-05 16:03:21,177 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-07-05 16:03:21,178 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-07-05 16:03:21,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-07-05 16:03:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-05 16:03:21,194 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:03:21,194 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-05 16:03:21,194 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:03:21,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:03:21,195 INFO L82 PathProgramCache]: Analyzing trace with hash 17400912, now seen corresponding path program 1 times [2021-07-05 16:03:21,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:03:21,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990416139] [2021-07-05 16:03:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:03:21,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:03:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 16:03:21,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:03:21,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 16:03:21,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 16:03:21,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 16:03:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 16:03:21,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 16:03:21,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990416139] [2021-07-05 16:03:21,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990416139] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 16:03:21,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 16:03:21,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 16:03:21,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22372911] [2021-07-05 16:03:21,403 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 16:03:21,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 16:03:21,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 16:03:21,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 16:03:21,404 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 20 states have internal predecessors, (26), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-05 16:03:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 16:03:21,423 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-07-05 16:03:21,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 16:03:21,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2021-07-05 16:03:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 16:03:21,425 INFO L225 Difference]: With dead ends: 22 [2021-07-05 16:03:21,440 INFO L226 Difference]: Without dead ends: 6 [2021-07-05 16:03:21,441 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 16:03:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-07-05 16:03:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-07-05 16:03:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 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) [2021-07-05 16:03:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2021-07-05 16:03:21,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 4 [2021-07-05 16:03:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 16:03:21,451 INFO L442 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2021-07-05 16:03:21,452 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-07-05 16:03:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2021-07-05 16:03:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-05 16:03:21,452 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 16:03:21,452 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-05 16:03:21,452 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 16:03:21,454 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 16:03:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 16:03:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash 539440199, now seen corresponding path program 1 times [2021-07-05 16:03:21,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 16:03:21,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402162074] [2021-07-05 16:03:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 16:03:21,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 16:03:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 16:03:21,503 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 16:03:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 16:03:21,539 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 16:03:21,567 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 16:03:21,567 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 16:03:21,568 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-05 16:03:21,569 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 16:03:21,569 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION was UNSAFE (3/5) [2021-07-05 16:03:21,571 INFO L224 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-05 16:03:21,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 04:03:21 BasicIcfg [2021-07-05 16:03:21,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 16:03:21,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 16:03:21,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 16:03:21,611 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 16:03:21,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 04:03:10" (3/4) ... [2021-07-05 16:03:21,612 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 16:03:21,646 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 16:03:21,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 16:03:21,647 INFO L168 Benchmark]: Toolchain (without parser) took 12856.21 ms. Allocated memory was 54.5 MB in the beginning and 255.9 MB in the end (delta: 201.3 MB). Free memory was 28.7 MB in the beginning and 107.9 MB in the end (delta: -79.2 MB). Peak memory consumption was 120.1 MB. Max. memory is 16.1 GB. [2021-07-05 16:03:21,648 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 16:03:21,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.75 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 28.5 MB in the beginning and 23.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-07-05 16:03:21,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.00 ms. Allocated memory is still 67.1 MB. Free memory was 23.9 MB in the beginning and 20.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 16:03:21,648 INFO L168 Benchmark]: Boogie Preprocessor took 43.99 ms. Allocated memory is still 67.1 MB. Free memory was 20.7 MB in the beginning and 42.8 MB in the end (delta: -22.1 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-07-05 16:03:21,648 INFO L168 Benchmark]: RCFGBuilder took 597.16 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-07-05 16:03:21,649 INFO L168 Benchmark]: TraceAbstraction took 11302.97 ms. Allocated memory was 81.8 MB in the beginning and 255.9 MB in the end (delta: 174.1 MB). Free memory was 41.1 MB in the beginning and 109.9 MB in the end (delta: -68.8 MB). Peak memory consumption was 105.2 MB. Max. memory is 16.1 GB. [2021-07-05 16:03:21,649 INFO L168 Benchmark]: Witness Printer took 36.19 ms. Allocated memory is still 255.9 MB. Free memory was 109.9 MB in the beginning and 107.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 16:03:21,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 788.75 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 28.5 MB in the beginning and 23.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.00 ms. Allocated memory is still 67.1 MB. Free memory was 23.9 MB in the beginning and 20.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.99 ms. Allocated memory is still 67.1 MB. Free memory was 20.7 MB in the beginning and 42.8 MB in the end (delta: -22.1 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 597.16 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11302.97 ms. Allocated memory was 81.8 MB in the beginning and 255.9 MB in the end (delta: 174.1 MB). Free memory was 41.1 MB in the beginning and 109.9 MB in the end (delta: -68.8 MB). Peak memory consumption was 105.2 MB. Max. memory is 16.1 GB. * Witness Printer took 36.19 ms. Allocated memory is still 255.9 MB. Free memory was 109.9 MB in the beginning and 107.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4073.4ms, 89 PlacesBefore, 17 PlacesAfterwards, 90 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 102 TotalNumberOfCompositions, 295 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 246, positive: 222, positive conditional: 0, positive unconditional: 222, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 188, positive: 177, positive conditional: 0, positive unconditional: 177, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 188, positive: 176, positive conditional: 0, positive unconditional: 176, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 34, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 246, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 188, unknown conditional: 0, unknown unconditional: 188] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3158.9ms, 89 PlacesBefore, 17 PlacesAfterwards, 90 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 102 TotalNumberOfCompositions, 275 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 244, positive: 222, positive conditional: 0, positive unconditional: 222, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 183, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 183, positive: 173, positive conditional: 0, positive unconditional: 173, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 20, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 244, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 183, unknown conditional: 0, unknown unconditional: 183] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3260.3ms, 89 PlacesBefore, 17 PlacesAfterwards, 90 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 105 TotalNumberOfCompositions, 279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 241, positive: 218, positive conditional: 0, positive unconditional: 218, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 187, positive: 176, positive conditional: 0, positive unconditional: 176, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 187, positive: 175, positive conditional: 0, positive unconditional: 175, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 241, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 187, unknown conditional: 0, unknown unconditional: 187] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1695]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1695]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={7:0}, pdev=1, t1={5:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={7:0}, pdev=2, t1={5:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={7:0}, pdev=6, t1={5:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4312.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 4.4ms, AutomataDifference: 27.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4100.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.3ms SsaConstructionTime, 13.5ms SatisfiabilityAnalysisTime, 46.7ms InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 3219.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 2.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3165.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5ms SsaConstructionTime, 5.9ms SatisfiabilityAnalysisTime, 14.3ms InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 3654.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 15.3ms, AutomataDifference: 37.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3263.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.2ms SsaConstructionTime, 95.1ms SatisfiabilityAnalysisTime, 99.8ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-05 16:03:21,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...