./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-time-trans.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_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/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_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-time-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/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_76f7168b-edc1-4907-bb4d-bab7d3fc1675/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 f2d05599d6fce1204a0d86fe3e19cae407be0ec265e139da4f0fd53a7d101655 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:20:30,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:20:30,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:20:30,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:20:30,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:20:30,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:20:30,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:20:30,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:20:30,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:20:30,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:20:30,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:20:30,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:20:30,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:20:30,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:20:30,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:20:30,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:20:30,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:20:30,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:20:30,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:20:30,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:20:30,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:20:30,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:20:30,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:20:30,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:20:30,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:20:30,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:20:30,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:20:30,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:20:30,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:20:30,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:20:30,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:20:30,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:20:30,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:20:30,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:20:30,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:20:30,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:20:30,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:20:30,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:20:30,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:20:30,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:20:30,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:20:30,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:20:31,016 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:20:31,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:20:31,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:20:31,018 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:20:31,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:20:31,018 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:20:31,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:20:31,019 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:20:31,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:20:31,025 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:20:31,026 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:20:31,027 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:20:31,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:20:31,027 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:20:31,027 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:20:31,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:20:31,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:20:31,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:20:31,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:20:31,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:20:31,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:20:31,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:20:31,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:20:31,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:20:31,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:20:31,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:20:31,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:20:31,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:20:31,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:20:31,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:20:31,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:20:31,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:20:31,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:20:31,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:20:31,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:20:31,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:20:31,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:20:31,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:20:31,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:20:31,035 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_76f7168b-edc1-4907-bb4d-bab7d3fc1675/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2d05599d6fce1204a0d86fe3e19cae407be0ec265e139da4f0fd53a7d101655 [2021-10-20 06:20:31,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:20:31,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:20:31,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:20:31,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:20:31,343 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:20:31,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/weaver/chl-time-trans.wvr.c [2021-10-20 06:20:31,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/data/9f15923a4/6e65880e802b4b7fa61e32ffcfb30431/FLAGfa50e848c [2021-10-20 06:20:31,953 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:20:31,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/sv-benchmarks/c/weaver/chl-time-trans.wvr.c [2021-10-20 06:20:31,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/data/9f15923a4/6e65880e802b4b7fa61e32ffcfb30431/FLAGfa50e848c [2021-10-20 06:20:32,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/data/9f15923a4/6e65880e802b4b7fa61e32ffcfb30431 [2021-10-20 06:20:32,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:20:32,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:20:32,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:20:32,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:20:32,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:20:32,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245ef838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32, skipping insertion in model container [2021-10-20 06:20:32,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:20:32,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:20:32,559 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_76f7168b-edc1-4907-bb4d-bab7d3fc1675/sv-benchmarks/c/weaver/chl-time-trans.wvr.c[2836,2849] [2021-10-20 06:20:32,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:20:32,583 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:20:32,626 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_76f7168b-edc1-4907-bb4d-bab7d3fc1675/sv-benchmarks/c/weaver/chl-time-trans.wvr.c[2836,2849] [2021-10-20 06:20:32,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:20:32,655 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:20:32,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32 WrapperNode [2021-10-20 06:20:32,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:20:32,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:20:32,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:20:32,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:20:32,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:20:32,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:20:32,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:20:32,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:20:32,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:20:32,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:20:32,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:20:32,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:20:32,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (1/1) ... [2021-10-20 06:20:32,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:20:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:20:32,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:20:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:20:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-20 06:20:32,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-20 06:20:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-20 06:20:32,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-20 06:20:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-20 06:20:32,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-20 06:20:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:20:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:20:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 06:20:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-20 06:20:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-20 06:20:32,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:20:32,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:20:32,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 06:20:32,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:20:32,890 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 06:20:34,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:20:34,236 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2021-10-20 06:20:34,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:20:34 BoogieIcfgContainer [2021-10-20 06:20:34,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:20:34,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:20:34,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:20:34,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:20:34,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:20:32" (1/3) ... [2021-10-20 06:20:34,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edd89fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:20:34, skipping insertion in model container [2021-10-20 06:20:34,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:20:32" (2/3) ... [2021-10-20 06:20:34,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edd89fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:20:34, skipping insertion in model container [2021-10-20 06:20:34,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:20:34" (3/3) ... [2021-10-20 06:20:34,254 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-time-trans.wvr.c [2021-10-20 06:20:34,260 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-20 06:20:34,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:20:34,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:20:34,261 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-20 06:20:34,320 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,320 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,321 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,321 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,323 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,323 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,323 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,326 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,326 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,326 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,329 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,329 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,329 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,330 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,330 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,331 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,331 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,331 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,332 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,332 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,332 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,333 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,333 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,333 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,335 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,335 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,337 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,337 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,337 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,337 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,338 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,338 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,339 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,339 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,339 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,339 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,339 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,341 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,342 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,343 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,344 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,344 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,345 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,345 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,346 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,351 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,354 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,354 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,354 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,355 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,355 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,356 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,357 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,357 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,362 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,366 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,366 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,366 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,366 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,367 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,367 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,367 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,367 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,368 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,368 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,368 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,369 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,370 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,370 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,371 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,371 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,372 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,372 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-20 06:20:34,385 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-20 06:20:34,434 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:20:34,439 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 06:20:34,439 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-20 06:20:34,452 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-20 06:20:34,461 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 104 transitions, 232 flow [2021-10-20 06:20:34,464 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 104 transitions, 232 flow [2021-10-20 06:20:34,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 104 transitions, 232 flow [2021-10-20 06:20:34,524 INFO L129 PetriNetUnfolder]: 1/101 cut-off events. [2021-10-20 06:20:34,525 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-20 06:20:34,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 1/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-10-20 06:20:34,533 INFO L116 LiptonReduction]: Number of co-enabled transitions 270 [2021-10-20 06:20:41,139 INFO L131 LiptonReduction]: Checked pairs total: 463 [2021-10-20 06:20:41,139 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-10-20 06:20:41,147 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-10-20 06:20:41,160 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 06:20:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 06:20:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:20:41,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:20:41,169 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:20:41,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-20 06:20:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:20:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash 725726488, now seen corresponding path program 1 times [2021-10-20 06:20:41,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:20:41,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992958731] [2021-10-20 06:20:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:20:41,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:20:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:20:41,846 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 06:20:41,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:20:41,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992958731] [2021-10-20 06:20:41,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992958731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:20:41,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:20:41,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:20:41,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161716006] [2021-10-20 06:20:41,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:20:41,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:20:41,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:20:41,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:20:41,881 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:20:42,012 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-10-20 06:20:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:20:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-20 06:20:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:20:42,025 INFO L225 Difference]: With dead ends: 67 [2021-10-20 06:20:42,025 INFO L226 Difference]: Without dead ends: 52 [2021-10-20 06:20:42,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:20:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-20 06:20:42,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-20 06:20:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 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 06:20:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2021-10-20 06:20:42,066 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2021-10-20 06:20:42,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:20:42,068 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2021-10-20 06:20:42,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2021-10-20 06:20:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:20:42,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:20:42,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:20:42,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:20:42,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-20 06:20:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:20:42,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2016161892, now seen corresponding path program 2 times [2021-10-20 06:20:42,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:20:42,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820184305] [2021-10-20 06:20:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:20:42,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:20:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:20:42,352 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 06:20:42,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:20:42,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820184305] [2021-10-20 06:20:42,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820184305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:20:42,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:20:42,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:20:42,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432934831] [2021-10-20 06:20:42,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:20:42,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:20:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:20:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:20:42,358 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:20:42,471 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2021-10-20 06:20:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:20:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-20 06:20:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:20:42,472 INFO L225 Difference]: With dead ends: 63 [2021-10-20 06:20:42,473 INFO L226 Difference]: Without dead ends: 44 [2021-10-20 06:20:42,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:20:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-20 06:20:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-10-20 06:20:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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 06:20:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-20 06:20:42,485 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-20 06:20:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:20:42,486 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-20 06:20:42,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-20 06:20:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:20:42,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:20:42,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:20:42,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:20:42,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-20 06:20:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:20:42,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1221532322, now seen corresponding path program 3 times [2021-10-20 06:20:42,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:20:42,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919431921] [2021-10-20 06:20:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:20:42,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:20:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:20:42,722 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 06:20:42,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:20:42,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919431921] [2021-10-20 06:20:42,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919431921] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:20:42,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:20:42,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:20:42,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307673429] [2021-10-20 06:20:42,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:20:42,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:20:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:20:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:20:42,725 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:42,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:20:42,831 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-10-20 06:20:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:20:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-20 06:20:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:20:42,833 INFO L225 Difference]: With dead ends: 51 [2021-10-20 06:20:42,833 INFO L226 Difference]: Without dead ends: 36 [2021-10-20 06:20:42,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:20:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-20 06:20:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-20 06:20:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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 06:20:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-10-20 06:20:42,838 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2021-10-20 06:20:42,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:20:42,838 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-20 06:20:42,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-10-20 06:20:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:20:42,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:20:42,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:20:42,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 06:20:42,840 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-20 06:20:42,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:20:42,841 INFO L82 PathProgramCache]: Analyzing trace with hash -723277740, now seen corresponding path program 4 times [2021-10-20 06:20:42,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:20:42,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519558826] [2021-10-20 06:20:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:20:42,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:20:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:20:43,061 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 06:20:43,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:20:43,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519558826] [2021-10-20 06:20:43,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519558826] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:20:43,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:20:43,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:20:43,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701147262] [2021-10-20 06:20:43,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:20:43,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:20:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:20:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:20:43,065 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:20:43,171 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-10-20 06:20:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:20:43,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-20 06:20:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:20:43,172 INFO L225 Difference]: With dead ends: 37 [2021-10-20 06:20:43,172 INFO L226 Difference]: Without dead ends: 24 [2021-10-20 06:20:43,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:20:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-20 06:20:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-20 06:20:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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 06:20:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-10-20 06:20:43,176 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2021-10-20 06:20:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:20:43,176 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-10-20 06:20:43,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-10-20 06:20:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:20:43,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:20:43,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:20:43,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 06:20:43,178 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-20 06:20:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:20:43,179 INFO L82 PathProgramCache]: Analyzing trace with hash 625514120, now seen corresponding path program 5 times [2021-10-20 06:20:43,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:20:43,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494209362] [2021-10-20 06:20:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:20:43,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:20:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:20:43,330 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 06:20:43,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:20:43,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494209362] [2021-10-20 06:20:43,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494209362] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:20:43,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:20:43,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:20:43,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904486732] [2021-10-20 06:20:43,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:20:43,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:20:43,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:20:43,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:20:43,333 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:20:43,416 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-20 06:20:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:20:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-20 06:20:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:20:43,417 INFO L225 Difference]: With dead ends: 31 [2021-10-20 06:20:43,417 INFO L226 Difference]: Without dead ends: 22 [2021-10-20 06:20:43,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:20:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-20 06:20:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-20 06:20:43,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) 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) [2021-10-20 06:20:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-20 06:20:43,420 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-10-20 06:20:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:20:43,421 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-20 06:20:43,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-20 06:20:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:20:43,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:20:43,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:20:43,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-20 06:20:43,422 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-20 06:20:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:20:43,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2047258888, now seen corresponding path program 6 times [2021-10-20 06:20:43,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:20:43,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252834716] [2021-10-20 06:20:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:20:43,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:20:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:20:43,592 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 06:20:43,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:20:43,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252834716] [2021-10-20 06:20:43,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252834716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:20:43,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:20:43,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:20:43,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30286891] [2021-10-20 06:20:43,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:20:43,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:20:43,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:20:43,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:20:43,595 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:20:43,675 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-20 06:20:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:20:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-20 06:20:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:20:43,676 INFO L225 Difference]: With dead ends: 21 [2021-10-20 06:20:43,676 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:20:43,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:20:43,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:20:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:20:43,677 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 06:20:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:20:43,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-20 06:20:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:20:43,677 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:20:43,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 06:20:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:20:43,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:20:43,681 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:20:43,681 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-20 06:20:43,681 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-20 06:20:43,682 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-20 06:20:43,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-20 06:20:43,686 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-20 06:20:43,686 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:20:43,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:20:43 BasicIcfg [2021-10-20 06:20:43,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:20:43,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:20:43,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:20:43,689 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:20:43,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:20:34" (3/4) ... [2021-10-20 06:20:43,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:20:43,697 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-20 06:20:43,697 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-20 06:20:43,698 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-20 06:20:43,702 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-20 06:20:43,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-20 06:20:43,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:20:43,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:20:43,760 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:20:43,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:20:43,762 INFO L168 Benchmark]: Toolchain (without parser) took 11463.88 ms. Allocated memory was 96.5 MB in the beginning and 172.0 MB in the end (delta: 75.5 MB). Free memory was 63.2 MB in the beginning and 128.6 MB in the end (delta: -65.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:20:43,763 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:20:43,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.52 ms. Allocated memory is still 96.5 MB. Free memory was 63.0 MB in the beginning and 70.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:20:43,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.98 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 67.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:20:43,764 INFO L168 Benchmark]: Boogie Preprocessor took 69.47 ms. Allocated memory is still 96.5 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:20:43,765 INFO L168 Benchmark]: RCFGBuilder took 1444.94 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 60.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-20 06:20:43,765 INFO L168 Benchmark]: TraceAbstraction took 9441.90 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 60.0 MB in the beginning and 131.7 MB in the end (delta: -71.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:20:43,765 INFO L168 Benchmark]: Witness Printer took 72.40 ms. Allocated memory is still 172.0 MB. Free memory was 131.7 MB in the beginning and 128.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:20:43,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.52 ms. Allocated memory is still 96.5 MB. Free memory was 63.0 MB in the beginning and 70.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.98 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 67.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.47 ms. Allocated memory is still 96.5 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1444.94 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 60.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9441.90 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 60.0 MB in the beginning and 131.7 MB in the end (delta: -71.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.40 ms. Allocated memory is still 172.0 MB. Free memory was 131.7 MB in the beginning and 128.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6675.7ms, 113 PlacesBefore, 30 PlacesAfterwards, 104 TransitionsBefore, 20 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 7 FixpointIterations, 67 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 86 TotalNumberOfCompositions, 463 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 463, positive: 463, positive conditional: 0, positive unconditional: 463, 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: 220, positive: 220, positive conditional: 0, positive unconditional: 220, 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: 220, positive: 220, positive conditional: 0, positive unconditional: 220, 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: 463, positive: 243, positive conditional: 0, positive unconditional: 243, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 220, unknown conditional: 0, unknown unconditional: 220] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, 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: 93]: 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 7 procedures, 119 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9252.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.1ms, AutomataDifference: 672.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6720.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 141 SDtfs, 138 SDslu, 221 SDs, 0 SdLazy, 98 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 587.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.8ms SsaConstructionTime, 558.8ms SatisfiabilityAnalysisTime, 1029.0ms InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 06:20:43,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76f7168b-edc1-4907-bb4d-bab7d3fc1675/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...