./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg --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 fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-dev-b2eff8b [2021-10-28 09:34:47,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:34:47,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:34:47,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:34:47,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:34:47,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:34:47,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:34:47,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:34:47,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:34:47,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:34:47,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:34:47,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:34:47,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:34:47,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:34:47,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:34:47,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:34:47,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:34:47,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:34:47,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:34:47,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:34:47,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:34:47,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:34:47,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:34:47,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:34:47,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:34:47,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:34:47,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:34:47,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:34:47,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:34:47,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:34:47,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:34:47,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:34:47,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:34:47,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:34:47,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:34:47,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:34:47,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:34:47,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:34:47,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:34:47,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:34:47,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:34:47,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:34:48,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:34:48,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:34:48,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:34:48,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:34:48,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:34:48,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:34:48,030 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:34:48,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:34:48,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:34:48,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:34:48,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:34:48,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:34:48,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:34:48,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:34:48,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:34:48,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:34:48,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:34:48,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:34:48,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:34:48,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:34:48,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:34:48,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:34:48,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:48,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:34:48,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:34:48,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:34:48,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:34:48,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:34:48,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:34:48,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:34:48,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:34:48,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:34:48,038 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2021-10-28 09:34:48,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:34:48,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:34:48,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:34:48,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:34:48,348 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:34:48,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-10-28 09:34:48,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/data/5fc3da73e/0283322c00ed464498228873e666ccec/FLAGd4a19bbbe [2021-10-28 09:34:49,018 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:34:49,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/sv-benchmarks/c/ldv-races/race-1_2-join.i [2021-10-28 09:34:49,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/data/5fc3da73e/0283322c00ed464498228873e666ccec/FLAGd4a19bbbe [2021-10-28 09:34:49,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/data/5fc3da73e/0283322c00ed464498228873e666ccec [2021-10-28 09:34:49,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:34:49,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:34:49,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:49,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:34:49,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:34:49,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:49" (1/1) ... [2021-10-28 09:34:49,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3986e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:49, skipping insertion in model container [2021-10-28 09:34:49,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:49" (1/1) ... [2021-10-28 09:34:49,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:34:49,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:34:50,071 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-10-28 09:34:50,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:50,111 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:34:50,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2021-10-28 09:34:50,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:50,308 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:34:50,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50 WrapperNode [2021-10-28 09:34:50,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:50,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:50,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:34:50,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:34:50,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:50,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:34:50,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:34:50,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:34:50,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:34:50,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:34:50,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:34:50,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:34:50,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (1/1) ... [2021-10-28 09:34:50,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:50,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:50,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:34:50,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:34:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 09:34:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:34:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 09:34:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:34:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-28 09:34:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:34:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:34:50,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:34:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:34:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 09:34:50,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 09:34:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:34:50,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:34:50,532 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:34:51,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:34:51,136 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 09:34:51,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:51 BoogieIcfgContainer [2021-10-28 09:34:51,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:34:51,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:34:51,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:34:51,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:34:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:34:49" (1/3) ... [2021-10-28 09:34:51,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702cfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:51, skipping insertion in model container [2021-10-28 09:34:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:50" (2/3) ... [2021-10-28 09:34:51,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702cfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:51, skipping insertion in model container [2021-10-28 09:34:51,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:51" (3/3) ... [2021-10-28 09:34:51,147 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-10-28 09:34:51,152 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:34:51,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:34:51,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-28 09:34:51,153 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:34:51,195 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,195 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,195 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,195 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,196 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,196 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,196 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,196 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,196 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,205 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,205 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,206 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:34:51,211 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-28 09:34:51,259 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:34:51,265 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:34:51,266 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-28 09:34:51,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-10-28 09:34:51,318 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-10-28 09:34:51,318 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 09:34:51,320 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. [2021-10-28 09:34:51,321 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 90 transitions, 188 flow [2021-10-28 09:34:51,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 156 flow [2021-10-28 09:34:51,333 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-10-28 09:34:51,333 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 09:34:51,333 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:34:51,334 INFO L254 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] [2021-10-28 09:34:51,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-28 09:34:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1260083599, now seen corresponding path program 1 times [2021-10-28 09:34:51,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:51,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753935774] [2021-10-28 09:34:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:51,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:51,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:51,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753935774] [2021-10-28 09:34:51,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753935774] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:51,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:51,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:34:51,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124876598] [2021-10-28 09:34:51,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:34:51,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:34:51,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:51,797 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-10-28 09:34:51,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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) [2021-10-28 09:34:51,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:34:51,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-10-28 09:34:51,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:34:51,883 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2021-10-28 09:34:51,883 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 09:34:51,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 83 events. 3/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 1 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 42. Up to 11 conditions per place. [2021-10-28 09:34:51,885 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 12 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2021-10-28 09:34:51,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 200 flow [2021-10-28 09:34:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:34:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:34:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2021-10-28 09:34:51,901 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7158730158730159 [2021-10-28 09:34:51,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2021-10-28 09:34:51,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2021-10-28 09:34:51,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:34:51,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2021-10-28 09:34:51,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 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) [2021-10-28 09:34:51,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-28 09:34:51,920 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-28 09:34:51,922 INFO L186 Difference]: Start difference. First operand has 78 places, 75 transitions, 156 flow. Second operand 7 states and 451 transitions. [2021-10-28 09:34:51,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 200 flow [2021-10-28 09:34:51,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:34:51,930 INFO L242 Difference]: Finished difference. Result has 80 places, 73 transitions, 178 flow [2021-10-28 09:34:51,931 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2021-10-28 09:34:51,936 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2021-10-28 09:34:51,936 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 178 flow [2021-10-28 09:34:51,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 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) [2021-10-28 09:34:51,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:34:51,937 INFO L254 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] [2021-10-28 09:34:51,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:34:51,938 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-28 09:34:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2003271251, now seen corresponding path program 1 times [2021-10-28 09:34:51,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:51,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254290051] [2021-10-28 09:34:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:51,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:52,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:52,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254290051] [2021-10-28 09:34:52,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254290051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:52,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:52,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:34:52,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114406514] [2021-10-28 09:34:52,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:34:52,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:34:52,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:52,151 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2021-10-28 09:34:52,152 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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) [2021-10-28 09:34:52,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:34:52,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2021-10-28 09:34:52,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:34:52,267 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2021-10-28 09:34:52,267 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-10-28 09:34:52,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 86 events. 3/86 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 38. Up to 12 conditions per place. [2021-10-28 09:34:52,270 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 14 selfloop transitions, 5 changer transitions 6/73 dead transitions. [2021-10-28 09:34:52,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 228 flow [2021-10-28 09:34:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:34:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:34:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 449 transitions. [2021-10-28 09:34:52,276 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7126984126984127 [2021-10-28 09:34:52,276 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 449 transitions. [2021-10-28 09:34:52,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 449 transitions. [2021-10-28 09:34:52,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:34:52,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 449 transitions. [2021-10-28 09:34:52,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.14285714285714) internal successors, (449), 7 states have internal predecessors, (449), 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) [2021-10-28 09:34:52,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-28 09:34:52,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2021-10-28 09:34:52,282 INFO L186 Difference]: Start difference. First operand has 80 places, 73 transitions, 178 flow. Second operand 7 states and 449 transitions. [2021-10-28 09:34:52,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 228 flow [2021-10-28 09:34:52,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 210 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 09:34:52,287 INFO L242 Difference]: Finished difference. Result has 79 places, 65 transitions, 152 flow [2021-10-28 09:34:52,288 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2021-10-28 09:34:52,288 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2021-10-28 09:34:52,288 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 152 flow [2021-10-28 09:34:52,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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) [2021-10-28 09:34:52,289 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:34:52,289 INFO L254 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] [2021-10-28 09:34:52,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:34:52,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-28 09:34:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1266345919, now seen corresponding path program 1 times [2021-10-28 09:34:52,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:52,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485823290] [2021-10-28 09:34:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:52,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:52,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:52,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485823290] [2021-10-28 09:34:52,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485823290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:52,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:52,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:34:52,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376992087] [2021-10-28 09:34:52,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:34:52,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:34:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:34:52,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-10-28 09:34:52,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-10-28 09:34:52,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:34:52,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-10-28 09:34:52,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:34:52,477 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-10-28 09:34:52,479 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 09:34:52,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 87 events. 2/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 23. Up to 11 conditions per place. [2021-10-28 09:34:52,481 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 8 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2021-10-28 09:34:52,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 184 flow [2021-10-28 09:34:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:34:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:34:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2021-10-28 09:34:52,484 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2021-10-28 09:34:52,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2021-10-28 09:34:52,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2021-10-28 09:34:52,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:34:52,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2021-10-28 09:34:52,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2021-10-28 09:34:52,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-10-28 09:34:52,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-10-28 09:34:52,487 INFO L186 Difference]: Start difference. First operand has 79 places, 65 transitions, 152 flow. Second operand 3 states and 232 transitions. [2021-10-28 09:34:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 184 flow [2021-10-28 09:34:52,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 09:34:52,492 INFO L242 Difference]: Finished difference. Result has 71 places, 67 transitions, 172 flow [2021-10-28 09:34:52,492 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2021-10-28 09:34:52,492 INFO L334 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2021-10-28 09:34:52,493 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 172 flow [2021-10-28 09:34:52,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-10-28 09:34:52,493 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:34:52,493 INFO L254 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] [2021-10-28 09:34:52,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:34:52,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-28 09:34:52,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:52,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1016284227, now seen corresponding path program 1 times [2021-10-28 09:34:52,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:52,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901216069] [2021-10-28 09:34:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:52,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:34:52,540 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:34:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:34:52,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:34:52,615 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:34:52,616 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:52,618 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:52,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:52,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:52,619 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:34:52,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:34:52,625 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 09:34:52,631 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:34:52,631 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:34:52,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:34:52 BasicIcfg [2021-10-28 09:34:52,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:34:52,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:34:52,685 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:34:52,685 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:34:52,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:51" (3/4) ... [2021-10-28 09:34:52,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:34:52,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:34:52,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:34:52,756 INFO L168 Benchmark]: Toolchain (without parser) took 3493.66 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 50.9 MB in the beginning and 106.9 MB in the end (delta: -56.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:52,756 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:52,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1051.05 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 50.7 MB in the beginning and 65.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:52,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.05 ms. Allocated memory is still 134.2 MB. Free memory was 65.4 MB in the beginning and 62.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:52,758 INFO L168 Benchmark]: Boogie Preprocessor took 65.96 ms. Allocated memory is still 134.2 MB. Free memory was 62.4 MB in the beginning and 59.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:52,759 INFO L168 Benchmark]: RCFGBuilder took 689.06 ms. Allocated memory is still 134.2 MB. Free memory was 59.7 MB in the beginning and 97.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:52,759 INFO L168 Benchmark]: TraceAbstraction took 1543.75 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 47.6 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:52,760 INFO L168 Benchmark]: Witness Printer took 64.07 ms. Allocated memory is still 134.2 MB. Free memory was 47.6 MB in the beginning and 106.9 MB in the end (delta: -59.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:52,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1051.05 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 50.7 MB in the beginning and 65.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.05 ms. Allocated memory is still 134.2 MB. Free memory was 65.4 MB in the beginning and 62.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.96 ms. Allocated memory is still 134.2 MB. Free memory was 62.4 MB in the beginning and 59.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 689.06 ms. Allocated memory is still 134.2 MB. Free memory was 59.7 MB in the beginning and 97.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1543.75 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 47.6 MB in the end (delta: 48.9 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.07 ms. Allocated memory is still 134.2 MB. Free memory was 47.6 MB in the beginning and 106.9 MB in the end (delta: -59.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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; VAL [t1={7:0}] [L1697] 0 pthread_mutex_t mutex; VAL [mutex={3:0}, t1={7:0}] [L1698] 0 int pdev; VAL [mutex={3:0}, pdev=0, t1={7:0}] [L1709] 0 pdev = 1 VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1695] COND FALSE 0 !(!expression) VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1711] COND TRUE 0 __VERIFIER_nondet_int() VAL [mutex={3:0}, pdev=1, t1={7:0}] [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={3:0}, pdev=1, t1={7:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={3:0}, pdev=2, t1={7:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={7:0}] [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={7:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 34 SDslu, 35 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=1, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-10-28 09:34:52,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dcedf2-497a-4732-9548-806b4bf36fdf/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...