./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0539ac658883b1641a4574e23a99ec21471d0b6a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0539ac658883b1641a4574e23a99ec21471d0b6a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:33:22,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:33:22,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:33:22,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:33:22,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:33:22,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:33:22,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:33:22,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:33:22,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:33:22,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:33:22,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:33:22,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:33:22,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:33:22,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:33:22,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:33:22,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:33:22,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:33:22,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:33:22,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:33:22,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:33:22,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:33:22,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:33:22,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:33:22,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:33:22,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:33:22,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:33:22,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:33:22,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:33:22,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:33:22,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:33:22,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:33:22,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:33:22,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:33:22,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:33:22,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:33:22,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:33:22,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:33:22,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:33:22,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:33:22,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:33:22,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:33:22,977 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-30 02:33:23,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:33:23,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:33:23,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:33:23,010 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:33:23,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:33:23,011 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:33:23,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:33:23,012 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:33:23,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:33:23,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:33:23,013 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:33:23,013 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:33:23,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:33:23,014 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:33:23,015 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:33:23,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:33:23,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:33:23,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:33:23,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:33:23,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:33:23,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:33:23,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:33:23,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:33:23,018 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:33:23,018 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:33:23,019 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:33:23,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:33:23,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:33:23,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:33:23,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:33:23,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:33:23,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:33:23,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:33:23,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:33:23,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:33:23,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:33:23,022 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:33:23,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:33:23,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:33:23,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:33:23,023 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-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-11-30 02:33:23,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:33:23,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:33:23,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:33:23,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:33:23,376 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:33:23,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-30 02:33:23,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/0f4a8c471/d36b8cdb7c5c4b788b4179ef621596b2/FLAGe6fb6d757 [2020-11-30 02:33:24,051 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:33:24,052 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-30 02:33:24,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/0f4a8c471/d36b8cdb7c5c4b788b4179ef621596b2/FLAGe6fb6d757 [2020-11-30 02:33:24,348 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/0f4a8c471/d36b8cdb7c5c4b788b4179ef621596b2 [2020-11-30 02:33:24,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:33:24,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:33:24,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:33:24,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:33:24,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:33:24,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:33:24" (1/1) ... [2020-11-30 02:33:24,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742cd178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:24, skipping insertion in model container [2020-11-30 02:33:24,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:33:24" (1/1) ... [2020-11-30 02:33:24,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:33:24,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:33:24,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:33:24,881 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:33:24,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:33:25,027 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:33:25,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25 WrapperNode [2020-11-30 02:33:25,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:33:25,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:33:25,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:33:25,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:33:25,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:33:25,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:33:25,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:33:25,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:33:25,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... [2020-11-30 02:33:25,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:33:25,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:33:25,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:33:25,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:33:25,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 02:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 02:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 02:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:33:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:33:26,412 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:33:26,412 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-30 02:33:26,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:33:26 BoogieIcfgContainer [2020-11-30 02:33:26,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:33:26,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:33:26,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:33:26,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:33:26,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:33:24" (1/3) ... [2020-11-30 02:33:26,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61815d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:33:26, skipping insertion in model container [2020-11-30 02:33:26,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:25" (2/3) ... [2020-11-30 02:33:26,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61815d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:33:26, skipping insertion in model container [2020-11-30 02:33:26,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:33:26" (3/3) ... [2020-11-30 02:33:26,430 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-30 02:33:26,444 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:33:26,450 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-30 02:33:26,470 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-30 02:33:26,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:33:26,517 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 02:33:26,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:33:26,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:33:26,518 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:33:26,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:33:26,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:33:26,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:33:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-11-30 02:33:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:33:26,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:26,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:33:26,551 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:26,558 INFO L82 PathProgramCache]: Analyzing trace with hash 208164005, now seen corresponding path program 1 times [2020-11-30 02:33:26,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:33:26,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956053617] [2020-11-30 02:33:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:33:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:26,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956053617] [2020-11-30 02:33:26,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:26,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:33:26,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448771312] [2020-11-30 02:33:26,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:33:26,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:33:26,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:33:26,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:33:26,855 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-11-30 02:33:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:27,223 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-11-30 02:33:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:33:27,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 02:33:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:27,246 INFO L225 Difference]: With dead ends: 97 [2020-11-30 02:33:27,247 INFO L226 Difference]: Without dead ends: 93 [2020-11-30 02:33:27,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:33:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-30 02:33:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-11-30 02:33:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 02:33:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2020-11-30 02:33:27,323 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 5 [2020-11-30 02:33:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:27,323 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2020-11-30 02:33:27,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:33:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2020-11-30 02:33:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:33:27,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:27,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:33:27,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:33:27,325 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:27,330 INFO L82 PathProgramCache]: Analyzing trace with hash 208164006, now seen corresponding path program 1 times [2020-11-30 02:33:27,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:33:27,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879379220] [2020-11-30 02:33:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:33:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:27,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879379220] [2020-11-30 02:33:27,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:27,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:33:27,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584327765] [2020-11-30 02:33:27,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:33:27,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:33:27,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:33:27,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:33:27,417 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 4 states. [2020-11-30 02:33:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:27,690 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-11-30 02:33:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:33:27,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 02:33:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:27,692 INFO L225 Difference]: With dead ends: 104 [2020-11-30 02:33:27,692 INFO L226 Difference]: Without dead ends: 104 [2020-11-30 02:33:27,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:33:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-30 02:33:27,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2020-11-30 02:33:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-30 02:33:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-11-30 02:33:27,715 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 5 [2020-11-30 02:33:27,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:27,716 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-11-30 02:33:27,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:33:27,716 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-11-30 02:33:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:33:27,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:27,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:27,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:33:27,721 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:27,722 INFO L82 PathProgramCache]: Analyzing trace with hash 444838930, now seen corresponding path program 1 times [2020-11-30 02:33:27,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:33:27,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279807886] [2020-11-30 02:33:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:33:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:27,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279807886] [2020-11-30 02:33:27,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:27,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:33:27,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497537576] [2020-11-30 02:33:27,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:33:27,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:33:27,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:33:27,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:33:27,879 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 5 states. [2020-11-30 02:33:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:28,182 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-11-30 02:33:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:33:28,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 02:33:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:28,184 INFO L225 Difference]: With dead ends: 124 [2020-11-30 02:33:28,185 INFO L226 Difference]: Without dead ends: 124 [2020-11-30 02:33:28,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:33:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-30 02:33:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2020-11-30 02:33:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 02:33:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-11-30 02:33:28,194 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 11 [2020-11-30 02:33:28,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:28,194 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-11-30 02:33:28,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:33:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-11-30 02:33:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:33:28,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:28,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:28,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:33:28,196 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:28,197 INFO L82 PathProgramCache]: Analyzing trace with hash 444838931, now seen corresponding path program 1 times [2020-11-30 02:33:28,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:33:28,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074253019] [2020-11-30 02:33:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:33:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:28,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074253019] [2020-11-30 02:33:28,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:28,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:33:28,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079338832] [2020-11-30 02:33:28,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:33:28,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:33:28,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:33:28,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:33:28,324 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 5 states. [2020-11-30 02:33:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:28,676 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2020-11-30 02:33:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:33:28,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 02:33:28,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:28,678 INFO L225 Difference]: With dead ends: 116 [2020-11-30 02:33:28,678 INFO L226 Difference]: Without dead ends: 116 [2020-11-30 02:33:28,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:33:28,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-30 02:33:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 66. [2020-11-30 02:33:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-30 02:33:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-11-30 02:33:28,686 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 11 [2020-11-30 02:33:28,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:28,686 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-11-30 02:33:28,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:33:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-11-30 02:33:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:33:28,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:28,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:28,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:33:28,688 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:28,688 INFO L82 PathProgramCache]: Analyzing trace with hash -132233513, now seen corresponding path program 1 times [2020-11-30 02:33:28,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:33:28,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895122932] [2020-11-30 02:33:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:33:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:28,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895122932] [2020-11-30 02:33:28,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:28,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:33:28,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125487409] [2020-11-30 02:33:28,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:33:28,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:33:28,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:33:28,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:33:28,825 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 6 states. [2020-11-30 02:33:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:29,114 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-11-30 02:33:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:33:29,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 02:33:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:29,116 INFO L225 Difference]: With dead ends: 117 [2020-11-30 02:33:29,116 INFO L226 Difference]: Without dead ends: 117 [2020-11-30 02:33:29,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:33:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-30 02:33:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2020-11-30 02:33:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 02:33:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-11-30 02:33:29,123 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 12 [2020-11-30 02:33:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:29,123 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-11-30 02:33:29,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:33:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-11-30 02:33:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:33:29,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:29,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:29,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:33:29,125 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:29,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1768292376, now seen corresponding path program 1 times [2020-11-30 02:33:29,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:33:29,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037449668] [2020-11-30 02:33:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:33:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:29,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037449668] [2020-11-30 02:33:29,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:29,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:33:29,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803613882] [2020-11-30 02:33:29,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:33:29,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:33:29,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:33:29,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:33:29,239 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 6 states. [2020-11-30 02:33:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:29,522 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-11-30 02:33:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:33:29,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 02:33:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:29,524 INFO L225 Difference]: With dead ends: 116 [2020-11-30 02:33:29,525 INFO L226 Difference]: Without dead ends: 116 [2020-11-30 02:33:29,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:33:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-30 02:33:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-11-30 02:33:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 02:33:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-11-30 02:33:29,531 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 14 [2020-11-30 02:33:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:29,531 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-11-30 02:33:29,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:33:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-11-30 02:33:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:33:29,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:29,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:29,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:33:29,533 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1481603074, now seen corresponding path program 1 times [2020-11-30 02:33:29,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:33:29,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141228476] [2020-11-30 02:33:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:33:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:33:29,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:33:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:33:29,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:33:29,651 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:33:29,652 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:33:29,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:33:29,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:33:29 BoogieIcfgContainer [2020-11-30 02:33:29,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:33:29,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:33:29,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:33:29,712 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:33:29,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:33:26" (3/4) ... [2020-11-30 02:33:29,717 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:33:29,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:33:29,721 INFO L168 Benchmark]: Toolchain (without parser) took 5365.25 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 62.1 MB in the beginning and 87.6 MB in the end (delta: -25.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:29,722 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:33:29,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.74 ms. Allocated memory is still 94.4 MB. Free memory was 61.9 MB in the beginning and 58.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:29,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.55 ms. Allocated memory is still 94.4 MB. Free memory was 58.0 MB in the beginning and 56.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:29,732 INFO L168 Benchmark]: Boogie Preprocessor took 45.18 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 54.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:29,732 INFO L168 Benchmark]: RCFGBuilder took 1282.96 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 54.3 MB in the beginning and 73.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:29,733 INFO L168 Benchmark]: TraceAbstraction took 3292.90 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 72.7 MB in the beginning and 88.6 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:29,734 INFO L168 Benchmark]: Witness Printer took 5.92 ms. Allocated memory is still 146.8 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:33:29,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 53.5 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 673.74 ms. Allocated memory is still 94.4 MB. Free memory was 61.9 MB in the beginning and 58.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.55 ms. Allocated memory is still 94.4 MB. Free memory was 58.0 MB in the beginning and 56.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.18 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 54.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1282.96 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 54.3 MB in the beginning and 73.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3292.90 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 72.7 MB in the beginning and 88.6 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.92 ms. Allocated memory is still 146.8 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 253 SDtfs, 530 SDslu, 376 SDs, 0 SdLazy, 828 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 201 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:33:32,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:33:32,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:33:32,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:33:32,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:33:32,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:33:32,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:33:32,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:33:32,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:33:32,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:33:32,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:33:32,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:33:32,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:33:32,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:33:32,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:33:32,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:33:32,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:33:32,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:33:32,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:33:32,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:33:32,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:33:32,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:33:32,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:33:32,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:33:32,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:33:32,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:33:32,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:33:32,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:33:32,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:33:32,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:33:32,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:33:32,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:33:32,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:33:32,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:33:32,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:33:32,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:33:32,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:33:32,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:33:32,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:33:32,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:33:32,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:33:32,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-30 02:33:32,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:33:32,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:33:32,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:33:32,836 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:33:32,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:33:32,837 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:33:32,837 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:33:32,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:33:32,838 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:33:32,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:33:32,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:33:32,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:33:32,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:33:32,845 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:33:32,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:33:32,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:33:32,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:33:32,845 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:33:32,845 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:33:32,845 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:33:32,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:33:32,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:33:32,846 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:33:32,846 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:33:32,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:33:32,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:33:32,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:33:32,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:33:32,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:33:32,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:33:32,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:33:32,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:33:32,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:33:32,848 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:33:32,848 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:33:32,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:33:32,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:33:32,849 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-11-30 02:33:33,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:33:33,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:33:33,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:33:33,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:33:33,348 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:33:33,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-30 02:33:33,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/a70cd08f3/b899b2180fb14e0dad4ee6431e50e11b/FLAG4b5f5d215 [2020-11-30 02:33:34,250 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:33:34,251 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-30 02:33:34,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/a70cd08f3/b899b2180fb14e0dad4ee6431e50e11b/FLAG4b5f5d215 [2020-11-30 02:33:34,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/data/a70cd08f3/b899b2180fb14e0dad4ee6431e50e11b [2020-11-30 02:33:34,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:33:34,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:33:34,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:33:34,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:33:34,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:33:34,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:33:34" (1/1) ... [2020-11-30 02:33:34,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bec234d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:34, skipping insertion in model container [2020-11-30 02:33:34,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:33:34" (1/1) ... [2020-11-30 02:33:34,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:33:34,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:33:35,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:33:35,156 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:33:35,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:33:35,334 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:33:35,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35 WrapperNode [2020-11-30 02:33:35,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:33:35,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:33:35,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:33:35,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:33:35,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:33:35,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:33:35,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:33:35,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:33:35,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... [2020-11-30 02:33:35,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:33:35,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:33:35,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:33:35,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:33:35,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:33:35,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:33:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 02:33:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 02:33:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:33:35,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 02:33:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:33:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 02:33:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:33:35,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:33:35,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:33:36,579 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:33:36,580 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-30 02:33:36,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:33:36 BoogieIcfgContainer [2020-11-30 02:33:36,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:33:36,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:33:36,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:33:36,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:33:36,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:33:34" (1/3) ... [2020-11-30 02:33:36,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d67622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:33:36, skipping insertion in model container [2020-11-30 02:33:36,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:33:35" (2/3) ... [2020-11-30 02:33:36,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d67622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:33:36, skipping insertion in model container [2020-11-30 02:33:36,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:33:36" (3/3) ... [2020-11-30 02:33:36,606 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-30 02:33:36,619 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:33:36,624 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-30 02:33:36,635 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-30 02:33:36,659 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:33:36,659 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 02:33:36,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:33:36,660 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:33:36,660 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:33:36,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:33:36,660 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:33:36,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:33:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-30 02:33:36,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:33:36,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:36,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:33:36,698 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:36,706 INFO L82 PathProgramCache]: Analyzing trace with hash 889599271, now seen corresponding path program 1 times [2020-11-30 02:33:36,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:36,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798488151] [2020-11-30 02:33:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:36,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:33:36,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:36,904 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 02:33:36,905 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:36,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:36,916 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:36,916 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 02:33:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:36,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:36,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798488151] [2020-11-30 02:33:36,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:36,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:33:36,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022066588] [2020-11-30 02:33:36,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:33:36,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:33:36,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:33:36,982 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-11-30 02:33:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:37,742 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-11-30 02:33:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:33:37,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 02:33:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:37,757 INFO L225 Difference]: With dead ends: 106 [2020-11-30 02:33:37,757 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 02:33:37,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:33:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 02:33:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-11-30 02:33:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-30 02:33:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-11-30 02:33:37,813 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 6 [2020-11-30 02:33:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:37,814 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-11-30 02:33:37,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:33:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-11-30 02:33:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:33:37,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:37,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:33:38,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:33:38,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash 889599272, now seen corresponding path program 1 times [2020-11-30 02:33:38,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:38,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828752794] [2020-11-30 02:33:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:38,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:33:38,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:38,149 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 02:33:38,150 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:38,160 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:38,160 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:38,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 02:33:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:38,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:38,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828752794] [2020-11-30 02:33:38,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:38,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 02:33:38,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373144646] [2020-11-30 02:33:38,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:33:38,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:38,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:33:38,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:33:38,317 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 6 states. [2020-11-30 02:33:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:39,129 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2020-11-30 02:33:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:33:39,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-30 02:33:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:39,136 INFO L225 Difference]: With dead ends: 119 [2020-11-30 02:33:39,136 INFO L226 Difference]: Without dead ends: 119 [2020-11-30 02:33:39,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:33:39,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-30 02:33:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-11-30 02:33:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-30 02:33:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-11-30 02:33:39,151 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 6 [2020-11-30 02:33:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:39,151 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-11-30 02:33:39,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:33:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-11-30 02:33:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:33:39,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:39,163 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:39,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:33:39,376 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:39,377 INFO L82 PathProgramCache]: Analyzing trace with hash 903973752, now seen corresponding path program 1 times [2020-11-30 02:33:39,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:39,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033341445] [2020-11-30 02:33:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:39,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:33:39,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:39,509 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 02:33:39,509 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:39,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:39,512 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:39,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 02:33:39,540 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 02:33:39,540 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:39,552 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:39,553 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:39,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-30 02:33:39,583 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-11-30 02:33:39,584 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:39,590 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:39,590 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:39,591 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-30 02:33:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:39,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033341445] [2020-11-30 02:33:39,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:39,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 02:33:39,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505039118] [2020-11-30 02:33:39,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:33:39,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:33:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:33:39,636 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 6 states. [2020-11-30 02:33:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:40,470 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2020-11-30 02:33:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:33:40,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 02:33:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:40,473 INFO L225 Difference]: With dead ends: 140 [2020-11-30 02:33:40,473 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 02:33:40,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:33:40,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 02:33:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2020-11-30 02:33:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-30 02:33:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-11-30 02:33:40,486 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 13 [2020-11-30 02:33:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:40,487 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-11-30 02:33:40,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:33:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-11-30 02:33:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:33:40,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:40,489 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:40,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:33:40,698 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:40,698 INFO L82 PathProgramCache]: Analyzing trace with hash 903973753, now seen corresponding path program 1 times [2020-11-30 02:33:40,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:40,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455359716] [2020-11-30 02:33:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:40,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:33:40,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:40,847 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 02:33:40,847 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:40,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:40,855 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:40,856 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 02:33:40,885 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 02:33:40,886 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:40,909 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:40,927 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 02:33:40,928 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:40,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:40,940 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:40,940 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-30 02:33:40,978 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-30 02:33:40,979 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:40,993 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:40,996 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-11-30 02:33:40,996 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:41,006 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:41,006 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:41,006 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-30 02:33:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:41,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:41,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455359716] [2020-11-30 02:33:41,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:41,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-30 02:33:41,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643702165] [2020-11-30 02:33:41,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:33:41,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:41,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:33:41,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:33:41,286 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 10 states. [2020-11-30 02:33:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:43,677 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2020-11-30 02:33:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:33:43,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-30 02:33:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:43,682 INFO L225 Difference]: With dead ends: 145 [2020-11-30 02:33:43,682 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 02:33:43,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:33:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 02:33:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 89. [2020-11-30 02:33:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 02:33:43,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-11-30 02:33:43,692 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 13 [2020-11-30 02:33:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:43,693 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-11-30 02:33:43,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:33:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-11-30 02:33:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:33:43,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:43,695 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:43,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:33:43,909 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:43,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288014, now seen corresponding path program 1 times [2020-11-30 02:33:43,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:43,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780734215] [2020-11-30 02:33:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:44,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:33:44,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:44,027 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 02:33:44,028 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:44,030 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:44,030 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:44,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 02:33:44,063 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 02:33:44,063 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:44,075 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:44,076 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:44,076 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-30 02:33:44,097 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-11-30 02:33:44,098 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:44,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:44,106 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:44,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-30 02:33:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:44,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:44,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780734215] [2020-11-30 02:33:44,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:44,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 02:33:44,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880874338] [2020-11-30 02:33:44,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:33:44,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:44,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:33:44,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:33:44,164 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 6 states. [2020-11-30 02:33:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:44,823 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2020-11-30 02:33:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:33:44,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 02:33:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:44,824 INFO L225 Difference]: With dead ends: 132 [2020-11-30 02:33:44,824 INFO L226 Difference]: Without dead ends: 132 [2020-11-30 02:33:44,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:33:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-30 02:33:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-11-30 02:33:44,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-30 02:33:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-11-30 02:33:44,837 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 14 [2020-11-30 02:33:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:44,837 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-11-30 02:33:44,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:33:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-11-30 02:33:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:33:44,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:44,841 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:45,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:33:45,042 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:45,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288015, now seen corresponding path program 1 times [2020-11-30 02:33:45,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:45,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424053104] [2020-11-30 02:33:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:45,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:33:45,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:45,135 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 02:33:45,135 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:45,142 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,142 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 02:33:45,172 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 02:33:45,173 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,198 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:45,207 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-30 02:33:45,207 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:45,225 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,225 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-30 02:33:45,270 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-30 02:33:45,271 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:45,287 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-11-30 02:33:45,288 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,294 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:45,294 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:45,295 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-30 02:33:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:45,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:45,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424053104] [2020-11-30 02:33:45,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:45,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-30 02:33:45,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267139047] [2020-11-30 02:33:45,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:33:45,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:45,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:33:45,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:33:45,721 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 10 states. [2020-11-30 02:33:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:47,821 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2020-11-30 02:33:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 02:33:47,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-30 02:33:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:47,824 INFO L225 Difference]: With dead ends: 131 [2020-11-30 02:33:47,824 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 02:33:47,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:33:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 02:33:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 74. [2020-11-30 02:33:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 02:33:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-11-30 02:33:47,832 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 14 [2020-11-30 02:33:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:47,832 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-11-30 02:33:47,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:33:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-11-30 02:33:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:33:47,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:47,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:48,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:33:48,049 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:48,050 INFO L82 PathProgramCache]: Analyzing trace with hash 638736065, now seen corresponding path program 1 times [2020-11-30 02:33:48,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:48,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524337332] [2020-11-30 02:33:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:48,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:33:48,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:48,198 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 02:33:48,199 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:48,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:48,212 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:48,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-30 02:33:48,263 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-30 02:33:48,264 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2020-11-30 02:33:48,265 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:48,268 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:48,268 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:48,268 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2020-11-30 02:33:48,304 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-30 02:33:48,305 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:48,314 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:48,315 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:48,315 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-11-30 02:33:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:48,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:48,379 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 02:33:48,407 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:48,408 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 02:33:48,408 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:20 [2020-11-30 02:33:48,473 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2020-11-30 02:33:48,485 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-30 02:33:48,584 INFO L625 ElimStorePlain]: treesize reduction 31, result has 40.4 percent of original size [2020-11-30 02:33:48,586 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-30 02:33:48,586 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:7 [2020-11-30 02:33:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:48,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524337332] [2020-11-30 02:33:48,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:48,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-30 02:33:48,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217275520] [2020-11-30 02:33:48,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 02:33:48,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:48,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 02:33:48,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:33:48,590 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 11 states. [2020-11-30 02:33:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:49,588 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2020-11-30 02:33:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:33:49,589 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-30 02:33:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:49,590 INFO L225 Difference]: With dead ends: 175 [2020-11-30 02:33:49,590 INFO L226 Difference]: Without dead ends: 175 [2020-11-30 02:33:49,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:33:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-30 02:33:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 81. [2020-11-30 02:33:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-30 02:33:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-11-30 02:33:49,598 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 14 [2020-11-30 02:33:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:49,598 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-11-30 02:33:49,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 02:33:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-11-30 02:33:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:33:49,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:49,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:49,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 02:33:49,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:49,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:49,816 INFO L82 PathProgramCache]: Analyzing trace with hash -402543346, now seen corresponding path program 1 times [2020-11-30 02:33:49,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:49,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119189371] [2020-11-30 02:33:49,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:33:49,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 02:33:49,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:33:49,963 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 02:33:49,964 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:49,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:49,981 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:49,981 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-30 02:33:50,026 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-30 02:33:50,026 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2020-11-30 02:33:50,027 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:50,030 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:50,030 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:50,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2020-11-30 02:33:50,069 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-30 02:33:50,070 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:33:50,073 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:50,073 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:33:50,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-30 02:33:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:50,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:33:50,172 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 02:33:50,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:33:50,181 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-30 02:33:50,181 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:20 [2020-11-30 02:33:50,241 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-11-30 02:33:50,244 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-30 02:33:50,365 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2020-11-30 02:33:50,365 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-11-30 02:33:50,369 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-30 02:33:50,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-11-30 02:33:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:33:50,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119189371] [2020-11-30 02:33:50,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:33:50,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-30 02:33:50,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242697303] [2020-11-30 02:33:50,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 02:33:50,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:33:50,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 02:33:50,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:33:50,380 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 11 states. [2020-11-30 02:33:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:33:51,615 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-11-30 02:33:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:33:51,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-11-30 02:33:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:33:51,617 INFO L225 Difference]: With dead ends: 161 [2020-11-30 02:33:51,617 INFO L226 Difference]: Without dead ends: 161 [2020-11-30 02:33:51,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:33:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-30 02:33:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 83. [2020-11-30 02:33:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-30 02:33:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-11-30 02:33:51,625 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 16 [2020-11-30 02:33:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:33:51,626 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-11-30 02:33:51,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 02:33:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-11-30 02:33:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:33:51,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:33:51,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:33:51,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:33:51,859 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 02:33:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:33:51,859 INFO L82 PathProgramCache]: Analyzing trace with hash -347600188, now seen corresponding path program 1 times [2020-11-30 02:33:51,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:33:51,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268620495] [2020-11-30 02:33:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fdc1d876-be50-43da-ab43-efac6055a9c2/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 02:33:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:33:51,950 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:33:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:33:52,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:33:52,043 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:33:52,043 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:33:52,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 02:33:52,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:33:52 BoogieIcfgContainer [2020-11-30 02:33:52,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:33:52,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:33:52,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:33:52,281 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:33:52,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:33:36" (3/4) ... [2020-11-30 02:33:52,285 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:33:52,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:33:52,287 INFO L168 Benchmark]: Toolchain (without parser) took 17803.42 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 53.9 MB in the beginning and 69.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:52,287 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory is still 31.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:33:52,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 846.22 ms. Allocated memory is still 75.5 MB. Free memory was 53.7 MB in the beginning and 45.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:52,289 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.08 ms. Allocated memory is still 75.5 MB. Free memory was 45.1 MB in the beginning and 42.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:52,289 INFO L168 Benchmark]: Boogie Preprocessor took 46.69 ms. Allocated memory is still 75.5 MB. Free memory was 42.8 MB in the beginning and 41.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:52,290 INFO L168 Benchmark]: RCFGBuilder took 1134.81 ms. Allocated memory is still 75.5 MB. Free memory was 41.0 MB in the beginning and 34.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:52,290 INFO L168 Benchmark]: TraceAbstraction took 15696.73 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 33.8 MB in the beginning and 69.7 MB in the end (delta: -35.9 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:33:52,291 INFO L168 Benchmark]: Witness Printer took 4.98 ms. Allocated memory is still 119.5 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:33:52,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory is still 31.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 846.22 ms. Allocated memory is still 75.5 MB. Free memory was 53.7 MB in the beginning and 45.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.08 ms. Allocated memory is still 75.5 MB. Free memory was 45.1 MB in the beginning and 42.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.69 ms. Allocated memory is still 75.5 MB. Free memory was 42.8 MB in the beginning and 41.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1134.81 ms. Allocated memory is still 75.5 MB. Free memory was 41.0 MB in the beginning and 34.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15696.73 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 33.8 MB in the beginning and 69.7 MB in the end (delta: -35.9 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.98 ms. Allocated memory is still 119.5 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 90 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.5s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 444 SDtfs, 1286 SDslu, 1263 SDs, 0 SdLazy, 2052 SolverSat, 232 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 409 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 176 ConstructedInterpolants, 2 QuantifiedInterpolants, 11932 SizeOfPredicates, 62 NumberOfNonLiveVariables, 496 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...