./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_3-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_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2021-10-29 05:06:46,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:06:46,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:06:46,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:06:46,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:06:46,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:06:46,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:06:46,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:06:46,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:06:46,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:06:46,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:06:46,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:06:46,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:06:46,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:06:46,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:06:46,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:06:46,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:06:46,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:06:46,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:06:46,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:06:46,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:06:46,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:06:46,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:06:46,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:06:46,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:06:46,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:06:46,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:06:46,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:06:46,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:06:46,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:06:46,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:06:46,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:06:46,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:06:46,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:06:46,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:06:46,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:06:46,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:06:46,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:06:46,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:06:46,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:06:46,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:06:46,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:06:46,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:06:46,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:06:46,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:06:46,158 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:06:46,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:06:46,159 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:06:46,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:06:46,160 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:06:46,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:06:46,160 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:06:46,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:06:46,161 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:06:46,161 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:06:46,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:06:46,162 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:06:46,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:06:46,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:06:46,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:06:46,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:06:46,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:06:46,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:06:46,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:06:46,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:06:46,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:06:46,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:06:46,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:06:46,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:06:46,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:06:46,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:06:46,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:06:46,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:46,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:06:46,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:06:46,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:06:46,168 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:06:46,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:06:46,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:06:46,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:06:46,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:06:46,169 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 [2021-10-29 05:06:46,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:06:46,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:06:46,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:06:46,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:06:46,489 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:06:46,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-10-29 05:06:46,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/data/2715e879c/21ab614c66994213917fdcfe0c08fa7b/FLAG49a3c1594 [2021-10-29 05:06:47,425 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:06:47,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/sv-benchmarks/c/ldv-races/race-1_3-join.i [2021-10-29 05:06:47,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/data/2715e879c/21ab614c66994213917fdcfe0c08fa7b/FLAG49a3c1594 [2021-10-29 05:06:47,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/data/2715e879c/21ab614c66994213917fdcfe0c08fa7b [2021-10-29 05:06:47,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:06:47,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:06:47,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:47,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:06:47,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:06:47,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:47" (1/1) ... [2021-10-29 05:06:47,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a4239d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:47, skipping insertion in model container [2021-10-29 05:06:47,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:06:47" (1/1) ... [2021-10-29 05:06:47,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:06:47,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:06:48,717 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_b130bce1-2dfd-4491-b32f-0bdeddd79491/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-10-29 05:06:48,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:48,766 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:06:48,818 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_b130bce1-2dfd-4491-b32f-0bdeddd79491/sv-benchmarks/c/ldv-races/race-1_3-join.i[76153,76166] [2021-10-29 05:06:48,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:06:48,999 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:06:49,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49 WrapperNode [2021-10-29 05:06:49,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:06:49,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:49,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:06:49,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:06:49,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:06:49,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:06:49,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:06:49,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:06:49,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:06:49,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:06:49,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:06:49,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:06:49,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (1/1) ... [2021-10-29 05:06:49,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:06:49,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:06:49,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:06:49,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:06:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-29 05:06:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:06:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-29 05:06:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:06:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-29 05:06:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:06:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:06:49,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:06:49,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:06:49,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-29 05:06:49,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-29 05:06:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:06:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:06:49,344 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-29 05:06:50,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:06:50,035 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-29 05:06:50,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:50 BoogieIcfgContainer [2021-10-29 05:06:50,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:06:50,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:06:50,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:06:50,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:06:50,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:06:47" (1/3) ... [2021-10-29 05:06:50,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a08d563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:50, skipping insertion in model container [2021-10-29 05:06:50,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:06:49" (2/3) ... [2021-10-29 05:06:50,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a08d563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:06:50, skipping insertion in model container [2021-10-29 05:06:50,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:50" (3/3) ... [2021-10-29 05:06:50,050 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-10-29 05:06:50,057 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-29 05:06:50,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:06:50,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-29 05:06:50,058 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-29 05:06:50,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,090 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,091 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,091 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,091 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,092 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,092 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,092 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,093 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,094 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,095 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,099 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,100 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,100 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,100 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,101 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-29 05:06:50,107 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-10-29 05:06:50,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:06:50,177 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=FINITE_AUTOMATA, 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 [2021-10-29 05:06:50,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-29 05:06:50,208 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-29 05:06:50,226 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 90 transitions, 188 flow [2021-10-29 05:06:50,230 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 90 transitions, 188 flow [2021-10-29 05:06:50,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 188 flow [2021-10-29 05:06:50,297 INFO L129 PetriNetUnfolder]: 4/104 cut-off events. [2021-10-29 05:06:50,298 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-29 05:06:50,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 4/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-10-29 05:06:50,303 INFO L116 LiptonReduction]: Number of co-enabled transitions 252 [2021-10-29 05:06:57,473 INFO L131 LiptonReduction]: Checked pairs total: 278 [2021-10-29 05:06:57,474 INFO L133 LiptonReduction]: Total number of compositions: 102 [2021-10-29 05:06:57,483 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2021-10-29 05:06:57,498 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 22 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 21 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) [2021-10-29 05:06:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 21 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) [2021-10-29 05:06:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-29 05:06:57,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:57,505 INFO L513 BasicCegarLoop]: trace histogram [1] [2021-10-29 05:06:57,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 05:06:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash 367, now seen corresponding path program 1 times [2021-10-29 05:06:57,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:06:57,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950714454] [2021-10-29 05:06:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:57,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:06:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:57,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:06:57,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950714454] [2021-10-29 05:06:57,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950714454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:57,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:57,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-10-29 05:06:57,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756615821] [2021-10-29 05:06:57,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:06:57,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:06:57,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:06:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:06:57,842 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 21 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) [2021-10-29 05:06:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:57,853 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-10-29 05:06:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:06:57,854 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 [2021-10-29 05:06:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:57,864 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:06:57,865 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 05:06:57,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:06:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 05:06:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-29 05:06:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2021-10-29 05:06:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-29 05:06:57,895 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 1 [2021-10-29 05:06:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:57,896 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-29 05:06:57,896 INFO L471 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) [2021-10-29 05:06:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-29 05:06:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:06:57,897 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:57,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:06:57,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:06:57,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 05:06:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash 363488, now seen corresponding path program 1 times [2021-10-29 05:06:57,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:06:57,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840781698] [2021-10-29 05:06:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:57,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:06:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:58,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:06:58,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840781698] [2021-10-29 05:06:58,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840781698] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:58,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:58,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:06:58,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100920953] [2021-10-29 05:06:58,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:06:58,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:06:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:06:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:06:58,072 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-29 05:06:58,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:58,085 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-10-29 05:06:58,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:06:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-29 05:06:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:58,086 INFO L225 Difference]: With dead ends: 11 [2021-10-29 05:06:58,086 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 05:06:58,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:06:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 05:06:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-29 05:06:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-10-29 05:06:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-29 05:06:58,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2021-10-29 05:06:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:58,091 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-29 05:06:58,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-29 05:06:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-29 05:06:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:06:58,092 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:58,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:06:58,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:06:58,093 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 05:06:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash 348068664, now seen corresponding path program 1 times [2021-10-29 05:06:58,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:06:58,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321746882] [2021-10-29 05:06:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:58,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:06:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:06:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:06:58,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:06:58,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321746882] [2021-10-29 05:06:58,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321746882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:06:58,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:06:58,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:06:58,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026787909] [2021-10-29 05:06:58,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:06:58,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:06:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:06:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:06:58,223 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-10-29 05:06:58,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:06:58,238 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-29 05:06:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:06:58,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) Word has length 5 [2021-10-29 05:06:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:06:58,240 INFO L225 Difference]: With dead ends: 10 [2021-10-29 05:06:58,241 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 05:06:58,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:06:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 05:06:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 05:06:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-10-29 05:06:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-29 05:06:58,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2021-10-29 05:06:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:06:58,248 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-29 05:06:58,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-10-29 05:06:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-29 05:06:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:06:58,251 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:06:58,251 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:06:58,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:06:58,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-29 05:06:58,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:06:58,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2094769695, now seen corresponding path program 1 times [2021-10-29 05:06:58,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:06:58,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298985802] [2021-10-29 05:06:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:06:58,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:06:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:06:58,374 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:06:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:06:58,472 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:06:58,473 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:06:58,474 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:58,477 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:58,478 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:58,478 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:06:58,478 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-29 05:06:58,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:06:58,481 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:06:58,486 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-29 05:06:58,487 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:06:58,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:06:58 BasicIcfg [2021-10-29 05:06:58,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:06:58,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:06:58,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:06:58,526 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:06:58,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:06:50" (3/4) ... [2021-10-29 05:06:58,529 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:06:58,580 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:06:58,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:06:58,583 INFO L168 Benchmark]: Toolchain (without parser) took 11000.91 ms. Allocated memory was 109.1 MB in the beginning and 174.1 MB in the end (delta: 65.0 MB). Free memory was 69.3 MB in the beginning and 82.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:58,584 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 84.1 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:06:58,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1417.23 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 80.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:58,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 151.89 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 79.9 MB in the beginning and 112.6 MB in the end (delta: -32.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:58,586 INFO L168 Benchmark]: Boogie Preprocessor took 68.99 ms. Allocated memory is still 142.6 MB. Free memory was 112.6 MB in the beginning and 110.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:58,587 INFO L168 Benchmark]: RCFGBuilder took 801.58 ms. Allocated memory is still 142.6 MB. Free memory was 109.8 MB in the beginning and 93.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:58,587 INFO L168 Benchmark]: TraceAbstraction took 8482.75 ms. Allocated memory was 142.6 MB in the beginning and 174.1 MB in the end (delta: 31.5 MB). Free memory was 92.2 MB in the beginning and 85.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:58,588 INFO L168 Benchmark]: Witness Printer took 55.92 ms. Allocated memory is still 174.1 MB. Free memory was 85.6 MB in the beginning and 82.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:06:58,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 84.1 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1417.23 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 80.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 151.89 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 79.9 MB in the beginning and 112.6 MB in the end (delta: -32.7 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.99 ms. Allocated memory is still 142.6 MB. Free memory was 112.6 MB in the beginning and 110.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 801.58 ms. Allocated memory is still 142.6 MB. Free memory was 109.8 MB in the beginning and 93.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8482.75 ms. Allocated memory was 142.6 MB in the beginning and 174.1 MB in the end (delta: 31.5 MB). Free memory was 92.2 MB in the beginning and 85.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. * Witness Printer took 55.92 ms. Allocated memory is still 174.1 MB. Free memory was 85.6 MB in the beginning and 82.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 89 PlacesBefore, 17 PlacesAfterwards, 90 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 102 TotalNumberOfCompositions, 278 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 254, positive: 228, positive conditional: 0, positive unconditional: 228, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 191, positive: 182, positive conditional: 0, positive unconditional: 182, 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: 191, positive: 181, positive conditional: 0, positive unconditional: 181, 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: 28, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 254, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 191, unknown conditional: 0, unknown unconditional: 191] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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; [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}] [L1713] 0 return 0; [L1734] COND FALSE 0 !(module_init()!=0) [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={7:0}, pdev=4, 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}] - 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. OverallTime: 8.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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! [2021-10-29 05:06:58,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b130bce1-2dfd-4491-b32f-0bdeddd79491/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...