./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_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:00:59,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:59,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:01:00,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:01:00,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:01:00,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:01:00,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:01:00,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:01:00,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:01:00,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:01:00,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:01:00,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:01:00,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:01:00,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:01:00,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:01:00,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:01:00,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:01:00,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:01:00,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:01:00,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:01:00,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:01:00,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:01:00,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:01:00,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:01:00,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:01:00,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:01:00,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:01:00,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:01:00,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:01:00,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:01:00,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:01:00,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:01:00,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:01:00,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:01:00,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:01:00,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:01:00,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:01:00,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:01:00,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:01:00,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:01:00,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:01:00,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:01:00,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:01:00,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:01:00,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:01:00,136 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:01:00,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:01:00,136 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:01:00,136 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:01:00,136 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:01:00,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:01:00,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:01:00,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:01:00,137 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:01:00,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:01:00,137 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:01:00,137 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:01:00,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:01:00,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:01:00,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:01:00,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:01:00,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:01:00,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:01:00,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:01:00,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:01:00,149 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:01:00,149 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:01:00,149 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:01:00,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:01:00,152 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:01:00,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:01:00,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:01:00,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:01:00,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:01:00,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:01:00,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:01:00,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:01:00,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:01:00,154 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:01:00,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:01:00,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:01:00,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:01:00,155 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_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-11-22 13:01:00,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:01:00,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:01:00,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:01:00,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:01:00,465 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:01:00,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-22 13:01:00,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/0325b848f/291a9786520746e6a2db173030ad3f21/FLAG8e8d1e0d2 [2020-11-22 13:01:01,052 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:01:01,053 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-22 13:01:01,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/0325b848f/291a9786520746e6a2db173030ad3f21/FLAG8e8d1e0d2 [2020-11-22 13:01:01,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/0325b848f/291a9786520746e6a2db173030ad3f21 [2020-11-22 13:01:01,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:01:01,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:01:01,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:01,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:01:01,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:01:01,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:01" (1/1) ... [2020-11-22 13:01:01,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38260612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:01, skipping insertion in model container [2020-11-22 13:01:01,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:01" (1/1) ... [2020-11-22 13:01:01,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:01:01,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:01:01,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:01,948 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:01:01,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:02,054 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:01:02,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02 WrapperNode [2020-11-22 13:01:02,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:02,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:02,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:01:02,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:01:02,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:02,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:01:02,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:01:02,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:01:02,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... [2020-11-22 13:01:02,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:01:02,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:01:02,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:01:02,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:01:02,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:02,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:01:02,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:01:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:01:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:01:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:01:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:01:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:01:02,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:01:02,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:01:02,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:01:03,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:01:03,203 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-22 13:01:03,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:03 BoogieIcfgContainer [2020-11-22 13:01:03,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:01:03,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:01:03,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:01:03,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:01:03,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:01:01" (1/3) ... [2020-11-22 13:01:03,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372bc325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:03, skipping insertion in model container [2020-11-22 13:01:03,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:02" (2/3) ... [2020-11-22 13:01:03,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372bc325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:03, skipping insertion in model container [2020-11-22 13:01:03,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:03" (3/3) ... [2020-11-22 13:01:03,216 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-22 13:01:03,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:01:03,234 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-22 13:01:03,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-22 13:01:03,277 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:01:03,277 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:01:03,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:01:03,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:01:03,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:01:03,278 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:01:03,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:01:03,278 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:01:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-11-22 13:01:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:01:03,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:03,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:01:03,305 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]=== [2020-11-22 13:01:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:03,312 INFO L82 PathProgramCache]: Analyzing trace with hash 208164005, now seen corresponding path program 1 times [2020-11-22 13:01:03,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:03,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635279245] [2020-11-22 13:01:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:03,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635279245] [2020-11-22 13:01:03,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:03,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:01:03,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28048433] [2020-11-22 13:01:03,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:01:03,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:03,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:01:03,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:01:03,531 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-11-22 13:01:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:03,910 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-11-22 13:01:03,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:01:03,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 13:01:03,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:03,920 INFO L225 Difference]: With dead ends: 97 [2020-11-22 13:01:03,920 INFO L226 Difference]: Without dead ends: 93 [2020-11-22 13:01:03,924 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 [2020-11-22 13:01:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-22 13:01:03,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-11-22 13:01:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 13:01:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2020-11-22 13:01:03,977 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 5 [2020-11-22 13:01:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:03,978 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2020-11-22 13:01:03,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:01:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2020-11-22 13:01:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:01:03,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:03,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:01:03,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:01:03,981 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]=== [2020-11-22 13:01:03,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:03,985 INFO L82 PathProgramCache]: Analyzing trace with hash 208164006, now seen corresponding path program 1 times [2020-11-22 13:01:03,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:03,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050528815] [2020-11-22 13:01:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:04,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050528815] [2020-11-22 13:01:04,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:04,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:01:04,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814020912] [2020-11-22 13:01:04,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:01:04,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:04,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:01:04,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:01:04,084 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 4 states. [2020-11-22 13:01:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:04,318 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-11-22 13:01:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:01:04,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 13:01:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:04,320 INFO L225 Difference]: With dead ends: 104 [2020-11-22 13:01:04,321 INFO L226 Difference]: Without dead ends: 104 [2020-11-22 13:01:04,321 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 [2020-11-22 13:01:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-22 13:01:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 91. [2020-11-22 13:01:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-22 13:01:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-11-22 13:01:04,331 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 5 [2020-11-22 13:01:04,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:04,331 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-11-22 13:01:04,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:01:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-11-22 13:01:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:01:04,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:04,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:04,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:01:04,333 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]=== [2020-11-22 13:01:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:04,333 INFO L82 PathProgramCache]: Analyzing trace with hash 444838930, now seen corresponding path program 1 times [2020-11-22 13:01:04,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:04,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186501998] [2020-11-22 13:01:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:04,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186501998] [2020-11-22 13:01:04,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:04,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:01:04,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264073475] [2020-11-22 13:01:04,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:01:04,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:04,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:01:04,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:04,430 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 5 states. [2020-11-22 13:01:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:04,749 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-11-22 13:01:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:04,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 13:01:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:04,751 INFO L225 Difference]: With dead ends: 124 [2020-11-22 13:01:04,752 INFO L226 Difference]: Without dead ends: 124 [2020-11-22 13:01:04,752 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 [2020-11-22 13:01:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-22 13:01:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 88. [2020-11-22 13:01:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-22 13:01:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-11-22 13:01:04,764 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 11 [2020-11-22 13:01:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:04,764 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-11-22 13:01:04,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:01:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-11-22 13:01:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:01:04,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:04,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:04,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:01:04,766 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]=== [2020-11-22 13:01:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 444838931, now seen corresponding path program 1 times [2020-11-22 13:01:04,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:04,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694382009] [2020-11-22 13:01:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:04,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694382009] [2020-11-22 13:01:04,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:04,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:01:04,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561027597] [2020-11-22 13:01:04,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:01:04,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:04,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:01:04,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:01:04,879 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 5 states. [2020-11-22 13:01:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:05,233 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2020-11-22 13:01:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:05,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 13:01:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:05,235 INFO L225 Difference]: With dead ends: 116 [2020-11-22 13:01:05,235 INFO L226 Difference]: Without dead ends: 116 [2020-11-22 13:01:05,236 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 [2020-11-22 13:01:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-22 13:01:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 66. [2020-11-22 13:01:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-22 13:01:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-11-22 13:01:05,242 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 11 [2020-11-22 13:01:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:05,243 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-11-22 13:01:05,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:01:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-11-22 13:01:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:01:05,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:05,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:05,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:01:05,245 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]=== [2020-11-22 13:01:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:05,245 INFO L82 PathProgramCache]: Analyzing trace with hash -132233513, now seen corresponding path program 1 times [2020-11-22 13:01:05,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:05,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786913397] [2020-11-22 13:01:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:05,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786913397] [2020-11-22 13:01:05,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:05,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 13:01:05,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844729933] [2020-11-22 13:01:05,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:01:05,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:05,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:01:05,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:05,399 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 6 states. [2020-11-22 13:01:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:05,691 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-11-22 13:01:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:05,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-22 13:01:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:05,693 INFO L225 Difference]: With dead ends: 117 [2020-11-22 13:01:05,693 INFO L226 Difference]: Without dead ends: 117 [2020-11-22 13:01:05,693 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 [2020-11-22 13:01:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-22 13:01:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2020-11-22 13:01:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 13:01:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-11-22 13:01:05,704 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 12 [2020-11-22 13:01:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:05,704 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-11-22 13:01:05,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:01:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-11-22 13:01:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:01:05,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:05,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:05,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:01:05,707 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]=== [2020-11-22 13:01:05,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:05,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1768292376, now seen corresponding path program 1 times [2020-11-22 13:01:05,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:05,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520389688] [2020-11-22 13:01:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:05,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520389688] [2020-11-22 13:01:05,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:05,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 13:01:05,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205047515] [2020-11-22 13:01:05,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:01:05,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:05,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:01:05,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:05,835 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 6 states. [2020-11-22 13:01:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:06,106 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-11-22 13:01:06,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:01:06,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 13:01:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:06,108 INFO L225 Difference]: With dead ends: 116 [2020-11-22 13:01:06,108 INFO L226 Difference]: Without dead ends: 116 [2020-11-22 13:01:06,108 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 [2020-11-22 13:01:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-22 13:01:06,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-11-22 13:01:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-22 13:01:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-11-22 13:01:06,116 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 14 [2020-11-22 13:01:06,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:06,116 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-11-22 13:01:06,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:01:06,117 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-11-22 13:01:06,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:01:06,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:06,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:06,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:01:06,118 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]=== [2020-11-22 13:01:06,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:06,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1481603074, now seen corresponding path program 1 times [2020-11-22 13:01:06,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:06,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770339258] [2020-11-22 13:01:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:01:06,141 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:01:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:01:06,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:01:06,221 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:01:06,222 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:01:06,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:01:06,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:01:06 BoogieIcfgContainer [2020-11-22 13:01:06,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:01:06,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:01:06,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:01:06,265 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:01:06,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:03" (3/4) ... [2020-11-22 13:01:06,268 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:01:06,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:01:06,270 INFO L168 Benchmark]: Toolchain (without parser) took 4698.28 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 66.2 MB in the beginning and 109.5 MB in the end (delta: -43.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:06,271 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:06,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.78 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 43.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:06,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.91 ms. Allocated memory is still 88.1 MB. Free memory was 43.8 MB in the beginning and 41.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:06,273 INFO L168 Benchmark]: Boogie Preprocessor took 35.38 ms. Allocated memory is still 88.1 MB. Free memory was 41.5 MB in the beginning and 39.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:06,273 INFO L168 Benchmark]: RCFGBuilder took 1065.50 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 39.9 MB in the beginning and 57.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:06,274 INFO L168 Benchmark]: TraceAbstraction took 3056.29 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 57.4 MB in the beginning and 109.5 MB in the end (delta: -52.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:06,274 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 142.6 MB. Free memory is still 109.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:06,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 481.78 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 43.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.91 ms. Allocated memory is still 88.1 MB. Free memory was 43.8 MB in the beginning and 41.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.38 ms. Allocated memory is still 88.1 MB. Free memory was 41.5 MB in the beginning and 39.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1065.50 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 39.9 MB in the beginning and 57.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3056.29 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 57.4 MB in the beginning and 109.5 MB in the end (delta: -52.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.11 ms. Allocated memory is still 142.6 MB. Free memory is still 109.5 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: 2.9s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.8s, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s 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 [2020-11-22 13:01:08,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:01:08,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:01:08,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:01:08,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:01:08,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:01:08,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:01:08,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:01:08,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:01:08,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:01:08,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:01:08,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:01:08,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:01:08,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:01:08,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:01:08,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:01:08,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:01:08,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:01:08,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:01:08,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:01:08,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:01:08,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:01:08,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:01:08,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:01:08,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:01:08,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:01:08,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:01:08,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:01:08,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:01:08,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:01:08,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:01:08,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:01:08,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:01:08,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:01:08,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:01:08,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:01:08,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:01:08,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:01:08,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:01:08,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:01:08,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:01:08,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:01:08,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:01:08,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:01:08,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:01:08,896 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:01:08,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:01:08,897 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:01:08,897 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:01:08,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:01:08,898 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:01:08,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:01:08,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:01:08,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:01:08,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:01:08,901 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:01:08,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:01:08,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:01:08,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:01:08,902 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:01:08,902 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:01:08,902 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:01:08,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:01:08,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:01:08,903 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:01:08,903 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:01:08,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:01:08,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:01:08,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:01:08,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:01:08,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:01:08,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:01:08,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:01:08,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:01:08,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:01:08,927 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:01:08,927 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:01:08,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:01:08,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:01:08,928 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_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-11-22 13:01:09,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:01:09,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:01:09,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:01:09,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:01:09,333 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:01:09,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-22 13:01:09,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/447cf51c3/94605b1972bb4be1bd829e85d0c9e999/FLAGacc91c04d [2020-11-22 13:01:09,998 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:01:09,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-11-22 13:01:10,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/447cf51c3/94605b1972bb4be1bd829e85d0c9e999/FLAGacc91c04d [2020-11-22 13:01:10,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/bin/utaipan/data/447cf51c3/94605b1972bb4be1bd829e85d0c9e999 [2020-11-22 13:01:10,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:01:10,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:01:10,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:10,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:01:10,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:01:10,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bffb23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10, skipping insertion in model container [2020-11-22 13:01:10,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:01:10,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:01:10,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:10,703 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:01:10,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:10,857 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:01:10,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10 WrapperNode [2020-11-22 13:01:10,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:10,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:10,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:01:10,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:01:10,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:10,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:01:10,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:01:10,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:01:10,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... [2020-11-22 13:01:10,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:01:10,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:01:10,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:01:10,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:01:10,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:01:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:01:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:01:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:01:11,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:01:11,922 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:01:11,928 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-22 13:01:11,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:11 BoogieIcfgContainer [2020-11-22 13:01:11,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:01:11,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:01:11,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:01:11,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:01:11,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:01:10" (1/3) ... [2020-11-22 13:01:11,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e52c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:11, skipping insertion in model container [2020-11-22 13:01:11,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:10" (2/3) ... [2020-11-22 13:01:11,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e52c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:11, skipping insertion in model container [2020-11-22 13:01:11,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:11" (3/3) ... [2020-11-22 13:01:11,939 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-22 13:01:11,951 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:01:11,955 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-11-22 13:01:11,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-11-22 13:01:11,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:01:11,983 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:01:11,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:01:11,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:01:11,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:01:11,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:01:11,984 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:01:11,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:01:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-22 13:01:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:01:12,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:12,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:01:12,008 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]=== [2020-11-22 13:01:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:12,014 INFO L82 PathProgramCache]: Analyzing trace with hash 889599271, now seen corresponding path program 1 times [2020-11-22 13:01:12,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:12,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803170166] [2020-11-22 13:01:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:12,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:01:12,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:12,193 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 [2020-11-22 13:01:12,193 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:12,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:12,201 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:12,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:01:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:12,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:12,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803170166] [2020-11-22 13:01:12,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:12,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:01:12,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667313686] [2020-11-22 13:01:12,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:01:12,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:01:12,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:01:12,252 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-11-22 13:01:12,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:12,749 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2020-11-22 13:01:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:01:12,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:01:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:12,762 INFO L225 Difference]: With dead ends: 106 [2020-11-22 13:01:12,762 INFO L226 Difference]: Without dead ends: 101 [2020-11-22 13:01:12,764 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 [2020-11-22 13:01:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-22 13:01:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-11-22 13:01:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-22 13:01:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2020-11-22 13:01:12,823 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 6 [2020-11-22 13:01:12,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:12,823 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2020-11-22 13:01:12,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:01:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2020-11-22 13:01:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:01:12,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:12,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:01:13,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:01:13,038 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]=== [2020-11-22 13:01:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash 889599272, now seen corresponding path program 1 times [2020-11-22 13:01:13,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:13,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444071717] [2020-11-22 13:01:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:13,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:01:13,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:13,139 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 [2020-11-22 13:01:13,140 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:13,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:13,147 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:13,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-22 13:01:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:13,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:13,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444071717] [2020-11-22 13:01:13,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:13,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 13:01:13,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096862325] [2020-11-22 13:01:13,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:01:13,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:13,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:01:13,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:13,304 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand 6 states. [2020-11-22 13:01:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:14,078 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2020-11-22 13:01:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:01:14,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-22 13:01:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:14,080 INFO L225 Difference]: With dead ends: 119 [2020-11-22 13:01:14,080 INFO L226 Difference]: Without dead ends: 119 [2020-11-22 13:01:14,081 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 [2020-11-22 13:01:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-22 13:01:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-11-22 13:01:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-22 13:01:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-11-22 13:01:14,103 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 6 [2020-11-22 13:01:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:14,104 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-11-22 13:01:14,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:01:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-11-22 13:01:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:01:14,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:14,106 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:14,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:01:14,328 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]=== [2020-11-22 13:01:14,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash 903973752, now seen corresponding path program 1 times [2020-11-22 13:01:14,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:14,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847540607] [2020-11-22 13:01:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:14,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 13:01:14,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:14,433 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 [2020-11-22 13:01:14,433 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:14,436 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:14,437 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:14,437 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:01:14,454 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 [2020-11-22 13:01:14,455 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:14,470 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:14,471 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:14,472 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-22 13:01:14,496 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 [2020-11-22 13:01:14,497 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:14,501 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:14,502 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:14,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-22 13:01:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:14,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:14,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847540607] [2020-11-22 13:01:14,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:14,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:01:14,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816139498] [2020-11-22 13:01:14,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:01:14,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:14,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:01:14,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:14,556 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 6 states. [2020-11-22 13:01:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:15,324 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2020-11-22 13:01:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:01:15,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-22 13:01:15,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:15,327 INFO L225 Difference]: With dead ends: 140 [2020-11-22 13:01:15,327 INFO L226 Difference]: Without dead ends: 140 [2020-11-22 13:01:15,327 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 [2020-11-22 13:01:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-22 13:01:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2020-11-22 13:01:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-22 13:01:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-11-22 13:01:15,337 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 13 [2020-11-22 13:01:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:15,337 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-11-22 13:01:15,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:01:15,337 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-11-22 13:01:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:01:15,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:15,338 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:15,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:01:15,562 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]=== [2020-11-22 13:01:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:15,563 INFO L82 PathProgramCache]: Analyzing trace with hash 903973753, now seen corresponding path program 1 times [2020-11-22 13:01:15,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:15,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954736410] [2020-11-22 13:01:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:15,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:01:15,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:15,654 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 [2020-11-22 13:01:15,655 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,662 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:15,662 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,662 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-22 13:01:15,686 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 [2020-11-22 13:01:15,687 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,704 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:15,715 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 [2020-11-22 13:01:15,715 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,732 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:15,734 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,734 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-22 13:01:15,785 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 [2020-11-22 13:01:15,786 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,817 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:15,821 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 [2020-11-22 13:01:15,822 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,828 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:15,828 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:15,828 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-22 13:01:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:15,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:16,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954736410] [2020-11-22 13:01:16,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:16,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-22 13:01:16,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161311741] [2020-11-22 13:01:16,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:01:16,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:16,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:01:16,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:01:16,118 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 10 states. [2020-11-22 13:01:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:17,969 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2020-11-22 13:01:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:01:17,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-22 13:01:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:17,972 INFO L225 Difference]: With dead ends: 145 [2020-11-22 13:01:17,972 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 13:01:17,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:01:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 13:01:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 89. [2020-11-22 13:01:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-22 13:01:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-11-22 13:01:17,980 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 13 [2020-11-22 13:01:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:17,980 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-11-22 13:01:17,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:01:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-11-22 13:01:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:01:17,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:17,981 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:18,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:01:18,182 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]=== [2020-11-22 13:01:18,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288014, now seen corresponding path program 1 times [2020-11-22 13:01:18,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:18,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428336422] [2020-11-22 13:01:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:18,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 13:01:18,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:18,301 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 [2020-11-22 13:01:18,301 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:18,309 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:18,309 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:18,309 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:01:18,351 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 [2020-11-22 13:01:18,351 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:18,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:18,364 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:18,365 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-22 13:01:18,384 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 [2020-11-22 13:01:18,385 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:18,387 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:18,387 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:18,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-22 13:01:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:18,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:18,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428336422] [2020-11-22 13:01:18,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:18,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:01:18,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820441668] [2020-11-22 13:01:18,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:01:18,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:18,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:01:18,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:18,434 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 6 states. [2020-11-22 13:01:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:18,925 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2020-11-22 13:01:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:01:18,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 13:01:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:18,926 INFO L225 Difference]: With dead ends: 132 [2020-11-22 13:01:18,926 INFO L226 Difference]: Without dead ends: 132 [2020-11-22 13:01:18,927 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 [2020-11-22 13:01:18,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-22 13:01:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-11-22 13:01:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-22 13:01:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-11-22 13:01:18,933 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 14 [2020-11-22 13:01:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:18,933 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-11-22 13:01:18,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:01:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-11-22 13:01:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:01:18,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:18,934 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:19,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:01:19,135 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]=== [2020-11-22 13:01:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:19,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1381288015, now seen corresponding path program 1 times [2020-11-22 13:01:19,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:19,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565014207] [2020-11-22 13:01:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:19,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:01:19,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:19,240 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 [2020-11-22 13:01:19,241 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:19,248 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,248 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-22 13:01:19,272 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 [2020-11-22 13:01:19,272 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:19,297 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 [2020-11-22 13:01:19,298 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:19,313 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,313 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-22 13:01:19,365 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 [2020-11-22 13:01:19,365 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,384 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:19,389 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 [2020-11-22 13:01:19,390 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:19,403 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:19,403 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-22 13:01:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:19,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:19,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565014207] [2020-11-22 13:01:19,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:19,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-22 13:01:19,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603721438] [2020-11-22 13:01:19,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:01:19,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:19,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:01:19,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:01:19,689 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 10 states. [2020-11-22 13:01:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:21,252 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2020-11-22 13:01:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:01:21,253 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-22 13:01:21,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:21,254 INFO L225 Difference]: With dead ends: 131 [2020-11-22 13:01:21,254 INFO L226 Difference]: Without dead ends: 131 [2020-11-22 13:01:21,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:01:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-22 13:01:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 74. [2020-11-22 13:01:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 13:01:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-11-22 13:01:21,263 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 14 [2020-11-22 13:01:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:21,263 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-11-22 13:01:21,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:01:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-11-22 13:01:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:01:21,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:21,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:21,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:01:21,475 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]=== [2020-11-22 13:01:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash 638736065, now seen corresponding path program 1 times [2020-11-22 13:01:21,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:21,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579462086] [2020-11-22 13:01:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:21,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:01:21,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:21,595 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 [2020-11-22 13:01:21,596 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:21,613 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:21,613 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:21,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-22 13:01:21,683 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-22 13:01:21,684 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 [2020-11-22 13:01:21,684 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:21,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:21,690 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:21,690 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2020-11-22 13:01:21,716 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 [2020-11-22 13:01:21,716 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:21,718 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:21,718 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:21,719 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-11-22 13:01:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:21,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:21,786 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:01:21,793 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:21,794 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:01:21,795 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:20 [2020-11-22 13:01:21,860 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 [2020-11-22 13:01:21,868 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-22 13:01:21,949 INFO L625 ElimStorePlain]: treesize reduction 31, result has 40.4 percent of original size [2020-11-22 13:01:21,950 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-22 13:01:21,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:7 [2020-11-22 13:01:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:21,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579462086] [2020-11-22 13:01:21,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:21,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-22 13:01:21,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451165063] [2020-11-22 13:01:21,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 13:01:21,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:21,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 13:01:21,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:01:21,954 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 11 states. [2020-11-22 13:01:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:22,739 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2020-11-22 13:01:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:01:22,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-22 13:01:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:22,742 INFO L225 Difference]: With dead ends: 175 [2020-11-22 13:01:22,743 INFO L226 Difference]: Without dead ends: 175 [2020-11-22 13:01:22,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:01:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-22 13:01:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 81. [2020-11-22 13:01:22,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-22 13:01:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-11-22 13:01:22,753 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 14 [2020-11-22 13:01:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:22,753 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-11-22 13:01:22,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 13:01:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-11-22 13:01:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:01:22,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:22,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:22,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:01:22,971 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]=== [2020-11-22 13:01:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:22,972 INFO L82 PathProgramCache]: Analyzing trace with hash -402543346, now seen corresponding path program 1 times [2020-11-22 13:01:22,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:22,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548890106] [2020-11-22 13:01:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:23,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:01:23,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:23,089 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 [2020-11-22 13:01:23,089 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:23,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:23,098 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:23,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-11-22 13:01:23,141 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-11-22 13:01:23,142 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 [2020-11-22 13:01:23,142 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:23,144 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:23,144 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:23,145 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2020-11-22 13:01:23,174 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 [2020-11-22 13:01:23,175 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:01:23,177 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:23,177 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:01:23,177 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-22 13:01:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:23,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:23,225 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:01:23,237 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:01:23,238 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:01:23,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:20 [2020-11-22 13:01:23,298 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 [2020-11-22 13:01:23,301 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-22 13:01:23,390 INFO L625 ElimStorePlain]: treesize reduction 107, result has 22.5 percent of original size [2020-11-22 13:01:23,393 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-22 13:01:23,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:24 [2020-11-22 13:01:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:23,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548890106] [2020-11-22 13:01:23,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:23,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-11-22 13:01:23,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371849681] [2020-11-22 13:01:23,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 13:01:23,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:01:23,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 13:01:23,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:01:23,401 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 11 states. [2020-11-22 13:01:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:24,312 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-11-22 13:01:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:01:24,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-11-22 13:01:24,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:24,313 INFO L225 Difference]: With dead ends: 161 [2020-11-22 13:01:24,313 INFO L226 Difference]: Without dead ends: 161 [2020-11-22 13:01:24,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:01:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-22 13:01:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 83. [2020-11-22 13:01:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-22 13:01:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-11-22 13:01:24,319 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 16 [2020-11-22 13:01:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:24,319 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-11-22 13:01:24,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 13:01:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-11-22 13:01:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:01:24,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:24,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:24,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:01:24,528 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]=== [2020-11-22 13:01:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash -347600188, now seen corresponding path program 1 times [2020-11-22 13:01:24,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:01:24,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990125468] [2020-11-22 13:01:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3b3e44b-ead3-456b-9e0b-a4d5c7913913/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 [2020-11-22 13:01:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:01:24,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:01:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:01:24,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:01:24,677 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:01:24,677 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:01:24,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 13:01:24,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:01:24 BoogieIcfgContainer [2020-11-22 13:01:24,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:01:24,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:01:24,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:01:24,916 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:01:24,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:11" (3/4) ... [2020-11-22 13:01:24,919 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:01:24,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:01:24,924 INFO L168 Benchmark]: Toolchain (without parser) took 14627.64 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 50.2 MB in the beginning and 36.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:24,924 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:24,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.24 ms. Allocated memory is still 69.2 MB. Free memory was 50.0 MB in the beginning and 38.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:24,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 69.2 MB. Free memory was 38.6 MB in the beginning and 36.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:24,928 INFO L168 Benchmark]: Boogie Preprocessor took 35.35 ms. Allocated memory is still 69.2 MB. Free memory was 36.5 MB in the beginning and 34.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:24,933 INFO L168 Benchmark]: RCFGBuilder took 967.01 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 34.8 MB in the beginning and 67.5 MB in the end (delta: -32.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:24,933 INFO L168 Benchmark]: TraceAbstraction took 12983.02 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 66.9 MB in the beginning and 37.8 MB in the end (delta: 29.1 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:24,936 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 107.0 MB. Free memory was 37.8 MB in the beginning and 36.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:24,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 566.24 ms. Allocated memory is still 69.2 MB. Free memory was 50.0 MB in the beginning and 38.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 69.2 MB. Free memory was 38.6 MB in the beginning and 36.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.35 ms. Allocated memory is still 69.2 MB. Free memory was 36.5 MB in the beginning and 34.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 967.01 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 34.8 MB in the beginning and 67.5 MB in the end (delta: -32.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12983.02 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 66.9 MB in the beginning and 37.8 MB in the end (delta: 29.1 MB). Peak memory consumption was 47.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.95 ms. Allocated memory is still 107.0 MB. Free memory was 37.8 MB in the beginning and 36.7 MB in the end (delta: 1.0 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: 12.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.6s, 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, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.9s 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, 0.2s SatisfiabilityAnalysisTime, 2.2s 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...