./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/security.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/security.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw --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 417dec4be084b2867b601c43d125afd61f7d3912bd17641ca10c0f094ab6abe0 ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:16:37,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:16:37,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:16:37,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:16:37,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:16:37,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:16:37,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:16:37,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:16:37,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:16:37,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:16:37,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:16:37,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:16:37,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:16:37,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:16:37,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:16:37,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:16:37,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:16:37,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:16:37,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:16:37,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:16:37,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:16:37,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:16:37,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:16:37,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:16:37,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:16:37,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:16:37,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:16:37,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:16:37,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:16:37,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:16:37,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:16:37,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:16:37,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:16:37,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:16:37,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:16:37,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:16:37,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:16:37,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:16:37,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:16:37,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:16:37,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:16:37,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:16:37,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:16:37,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:16:37,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:16:37,221 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:16:37,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:16:37,222 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:16:37,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:16:37,222 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:16:37,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:16:37,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:16:37,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:16:37,223 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:16:37,223 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:16:37,223 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:16:37,224 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:16:37,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:16:37,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:16:37,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:16:37,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:16:37,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:16:37,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:16:37,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:16:37,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:16:37,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:16:37,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:16:37,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:16:37,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:16:37,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:16:37,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:16:37,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:16:37,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:16:37,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:16:37,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:16:37,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:16:37,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:16:37,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:16:37,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:16:37,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:16:37,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:16:37,229 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_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 417dec4be084b2867b601c43d125afd61f7d3912bd17641ca10c0f094ab6abe0 [2021-10-20 06:16:37,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:16:37,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:16:37,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:16:37,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:16:37,573 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:16:37,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/weaver/security.wvr.c [2021-10-20 06:16:37,705 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/data/6d97c1b9e/65510a894d294456816c0519b0303864/FLAG5e2bff7ab [2021-10-20 06:16:38,160 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:16:38,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/sv-benchmarks/c/weaver/security.wvr.c [2021-10-20 06:16:38,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/data/6d97c1b9e/65510a894d294456816c0519b0303864/FLAG5e2bff7ab [2021-10-20 06:16:38,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/data/6d97c1b9e/65510a894d294456816c0519b0303864 [2021-10-20 06:16:38,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:16:38,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:16:38,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:16:38,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:16:38,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:16:38,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702b81a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38, skipping insertion in model container [2021-10-20 06:16:38,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:16:38,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:16:38,757 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_870ad668-0d47-4ff1-9650-e97532e6a0f2/sv-benchmarks/c/weaver/security.wvr.c[1931,1944] [2021-10-20 06:16:38,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:16:38,769 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:16:38,789 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_870ad668-0d47-4ff1-9650-e97532e6a0f2/sv-benchmarks/c/weaver/security.wvr.c[1931,1944] [2021-10-20 06:16:38,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:16:38,805 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:16:38,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38 WrapperNode [2021-10-20 06:16:38,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:16:38,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:16:38,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:16:38,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:16:38,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:16:38,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:16:38,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:16:38,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:16:38,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:16:38,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:16:38,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:16:38,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:16:38,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (1/1) ... [2021-10-20 06:16:38,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:16:38,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:16:38,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:16:38,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:16:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-20 06:16:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-20 06:16:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-20 06:16:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-20 06:16:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:16:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:16:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 06:16:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:16:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:16:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 06:16:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:16:38,987 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-20 06:16:39,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:16:39,367 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-20 06:16:39,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:39 BoogieIcfgContainer [2021-10-20 06:16:39,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:16:39,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:16:39,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:16:39,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:16:39,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:16:38" (1/3) ... [2021-10-20 06:16:39,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726128a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:39, skipping insertion in model container [2021-10-20 06:16:39,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:38" (2/3) ... [2021-10-20 06:16:39,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726128a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:39, skipping insertion in model container [2021-10-20 06:16:39,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:39" (3/3) ... [2021-10-20 06:16:39,393 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2021-10-20 06:16:39,399 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-20 06:16:39,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:16:39,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:16:39,407 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-20 06:16:39,444 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,444 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,445 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,445 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,445 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:16:39,472 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-20 06:16:39,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:16:39,526 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 [2021-10-20 06:16:39,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 06:16:39,544 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-20 06:16:39,556 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 75 transitions, 166 flow [2021-10-20 06:16:39,559 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 75 transitions, 166 flow [2021-10-20 06:16:39,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 75 transitions, 166 flow [2021-10-20 06:16:39,617 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2021-10-20 06:16:39,617 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-20 06:16:39,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 3/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2021-10-20 06:16:39,624 INFO L116 LiptonReduction]: Number of co-enabled transitions 500 [2021-10-20 06:16:42,531 INFO L131 LiptonReduction]: Checked pairs total: 497 [2021-10-20 06:16:42,531 INFO L133 LiptonReduction]: Total number of compositions: 67 [2021-10-20 06:16:42,540 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2021-10-20 06:16:42,551 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-10-20 06:16:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-10-20 06:16:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 06:16:42,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:16:42,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:16:42,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-20 06:16:42,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:16:42,564 INFO L82 PathProgramCache]: Analyzing trace with hash 195656800, now seen corresponding path program 1 times [2021-10-20 06:16:42,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:16:42,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633700006] [2021-10-20 06:16:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:16:42,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:16:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:16:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:16:43,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:16:43,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633700006] [2021-10-20 06:16:43,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633700006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:16:43,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:16:43,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:16:43,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478699112] [2021-10-20 06:16:43,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:16:43,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:16:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:16:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:16:43,135 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-20 06:16:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:16:43,184 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-20 06:16:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:16:43,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-20 06:16:43,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:16:43,194 INFO L225 Difference]: With dead ends: 25 [2021-10-20 06:16:43,194 INFO L226 Difference]: Without dead ends: 14 [2021-10-20 06:16:43,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:16:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-20 06:16:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-20 06:16:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-10-20 06:16:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-20 06:16:43,231 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-20 06:16:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:16:43,235 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-20 06:16:43,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-20 06:16:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-20 06:16:43,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 06:16:43,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:16:43,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:16:43,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:16:43,240 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-20 06:16:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:16:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash -728392944, now seen corresponding path program 2 times [2021-10-20 06:16:43,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:16:43,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648025800] [2021-10-20 06:16:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:16:43,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:16:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:16:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:16:43,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:16:43,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648025800] [2021-10-20 06:16:43,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648025800] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:16:43,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:16:43,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:16:43,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433027793] [2021-10-20 06:16:43,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:16:43,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:16:43,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:16:43,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:16:43,543 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-20 06:16:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:16:43,568 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-20 06:16:43,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:16:43,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-20 06:16:43,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:16:43,569 INFO L225 Difference]: With dead ends: 13 [2021-10-20 06:16:43,569 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:16:43,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:16:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:16:43,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:16:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:16:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:16:43,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-20 06:16:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:16:43,571 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:16:43,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-20 06:16:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:16:43,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:16:43,574 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:16:43,575 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-20 06:16:43,576 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-20 06:16:43,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:16:43,582 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-20 06:16:43,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:16:43,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:16:43 BasicIcfg [2021-10-20 06:16:43,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:16:43,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:16:43,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:16:43,586 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:16:43,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:39" (3/4) ... [2021-10-20 06:16:43,590 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:16:43,598 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-20 06:16:43,598 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-20 06:16:43,605 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-20 06:16:43,606 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-20 06:16:43,606 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:16:43,606 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:16:43,659 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:16:43,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:16:43,669 INFO L168 Benchmark]: Toolchain (without parser) took 5111.48 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 54.5 MB in the beginning and 59.1 MB in the end (delta: -4.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:16:43,669 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:16:43,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.41 ms. Allocated memory is still 90.2 MB. Free memory was 54.2 MB in the beginning and 44.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:16:43,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.40 ms. Allocated memory is still 90.2 MB. Free memory was 44.1 MB in the beginning and 42.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:16:43,670 INFO L168 Benchmark]: Boogie Preprocessor took 24.07 ms. Allocated memory is still 90.2 MB. Free memory was 42.6 MB in the beginning and 41.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:16:43,671 INFO L168 Benchmark]: RCFGBuilder took 498.94 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 41.4 MB in the beginning and 88.4 MB in the end (delta: -47.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-10-20 06:16:43,671 INFO L168 Benchmark]: TraceAbstraction took 4199.86 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 62.1 MB in the end (delta: 25.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-20 06:16:43,672 INFO L168 Benchmark]: Witness Printer took 77.03 ms. Allocated memory is still 119.5 MB. Free memory was 62.1 MB in the beginning and 59.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:16:43,674 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 90.2 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.41 ms. Allocated memory is still 90.2 MB. Free memory was 54.2 MB in the beginning and 44.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.40 ms. Allocated memory is still 90.2 MB. Free memory was 44.1 MB in the beginning and 42.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.07 ms. Allocated memory is still 90.2 MB. Free memory was 42.6 MB in the beginning and 41.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 498.94 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 41.4 MB in the beginning and 88.4 MB in the end (delta: -47.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4199.86 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 62.1 MB in the end (delta: 25.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. * Witness Printer took 77.03 ms. Allocated memory is still 119.5 MB. Free memory was 62.1 MB in the beginning and 59.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2972.1ms, 79 PlacesBefore, 21 PlacesAfterwards, 75 TransitionsBefore, 14 TransitionsAfterwards, 500 CoEnabledTransitionPairs, 5 FixpointIterations, 37 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 497 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 497, positive: 497, positive conditional: 0, positive unconditional: 497, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 369, positive: 369, positive conditional: 0, positive unconditional: 369, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 369, positive: 369, positive conditional: 0, positive unconditional: 369, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 497, positive: 128, positive conditional: 0, positive unconditional: 128, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 369, unknown conditional: 0, unknown unconditional: 369] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4062.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 115.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3023.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 15 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.4ms SsaConstructionTime, 260.0ms SatisfiabilityAnalysisTime, 452.2ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-20 06:16:43,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_870ad668-0d47-4ff1-9650-e97532e6a0f2/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...