./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0019-2.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_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 e0c6505355e23ab050a0b1754726876dca60bcf4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 e0c6505355e23ab050a0b1754726876dca60bcf4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:06:07,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:07,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:07,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:07,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:07,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:07,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:07,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:07,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:07,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:07,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:07,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:07,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:07,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:07,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:07,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:07,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:07,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:07,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:07,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:07,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:07,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:07,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:07,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:07,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:07,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:07,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:07,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:07,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:07,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:07,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:07,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:07,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:07,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:07,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:07,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:07,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:07,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:07,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:07,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:07,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:07,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:06:07,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:07,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:07,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:07,255 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:07,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:07,255 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:07,256 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:07,256 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:07,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:07,256 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:07,258 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:07,258 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:07,258 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:07,259 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:07,259 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:07,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:06:07,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:06:07,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:07,261 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:07,261 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:07,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:07,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:07,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:07,262 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:06:07,262 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:06:07,262 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:06:07,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:07,263 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:07,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:07,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:07,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:07,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:07,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:07,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:07,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:07,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:07,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:07,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:07,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:07,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:07,271 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_9dbe9512-b88c-47c9-9079-6222d33d3420/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2020-11-22 13:06:07,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:07,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:07,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:07,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:07,612 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:07,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/../../sv-benchmarks/c/memsafety/test-0019-2.i [2020-11-22 13:06:07,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/5f92c0901/d3cd7b4d07f34e3f8075c7adb8a94318/FLAG440fbf058 [2020-11-22 13:06:08,336 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:08,337 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/sv-benchmarks/c/memsafety/test-0019-2.i [2020-11-22 13:06:08,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/5f92c0901/d3cd7b4d07f34e3f8075c7adb8a94318/FLAG440fbf058 [2020-11-22 13:06:08,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/5f92c0901/d3cd7b4d07f34e3f8075c7adb8a94318 [2020-11-22 13:06:08,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:08,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:08,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:08,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:08,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:08,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f12e9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08, skipping insertion in model container [2020-11-22 13:06:08,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:08,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:09,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:09,109 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:09,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:09,240 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:09,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09 WrapperNode [2020-11-22 13:06:09,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:09,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:09,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:09,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:09,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:09,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:09,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:09,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:09,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... [2020-11-22 13:06:09,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:09,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:09,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:09,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:09,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:06:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:06:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:06:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:09,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:10,095 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:10,096 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-22 13:06:10,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:10 BoogieIcfgContainer [2020-11-22 13:06:10,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:10,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:10,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:10,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:10,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:08" (1/3) ... [2020-11-22 13:06:10,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ecaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:10, skipping insertion in model container [2020-11-22 13:06:10,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:09" (2/3) ... [2020-11-22 13:06:10,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ecaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:10, skipping insertion in model container [2020-11-22 13:06:10,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:10" (3/3) ... [2020-11-22 13:06:10,111 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2020-11-22 13:06:10,131 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:10,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-11-22 13:06:10,151 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-11-22 13:06:10,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:10,189 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:06:10,190 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:10,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:10,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:10,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:10,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:10,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-22 13:06:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-22 13:06:10,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:10,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-22 13:06:10,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:10,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:10,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2515, now seen corresponding path program 1 times [2020-11-22 13:06:10,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:10,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413888468] [2020-11-22 13:06:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:10,446 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 13:06:10,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413888468] [2020-11-22 13:06:10,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:10,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:06:10,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412801930] [2020-11-22 13:06:10,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:10,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:10,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:10,476 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-11-22 13:06:10,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:10,574 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-11-22 13:06:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:10,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-22 13:06:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:10,586 INFO L225 Difference]: With dead ends: 39 [2020-11-22 13:06:10,587 INFO L226 Difference]: Without dead ends: 38 [2020-11-22 13:06:10,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:10,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-22 13:06:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-11-22 13:06:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-22 13:06:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-22 13:06:10,654 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 2 [2020-11-22 13:06:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:10,654 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-22 13:06:10,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-22 13:06:10,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-22 13:06:10,655 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:10,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-22 13:06:10,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:10,657 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:10,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:10,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2516, now seen corresponding path program 1 times [2020-11-22 13:06:10,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:10,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699676170] [2020-11-22 13:06:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:10,818 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 13:06:10,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699676170] [2020-11-22 13:06:10,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:10,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:06:10,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97113973] [2020-11-22 13:06:10,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:10,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:10,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:10,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:10,822 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 3 states. [2020-11-22 13:06:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:10,867 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-11-22 13:06:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:10,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-22 13:06:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:10,871 INFO L225 Difference]: With dead ends: 30 [2020-11-22 13:06:10,871 INFO L226 Difference]: Without dead ends: 30 [2020-11-22 13:06:10,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-22 13:06:10,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-22 13:06:10,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-22 13:06:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-22 13:06:10,884 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 2 [2020-11-22 13:06:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:10,884 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-22 13:06:10,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-22 13:06:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:06:10,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:10,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:06:10,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:10,887 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:10,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2467551, now seen corresponding path program 1 times [2020-11-22 13:06:10,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:10,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638561310] [2020-11-22 13:06:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:10,980 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 13:06:10,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638561310] [2020-11-22 13:06:10,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:10,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:10,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139264255] [2020-11-22 13:06:10,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:10,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:10,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:10,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:10,983 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 4 states. [2020-11-22 13:06:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:11,116 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-22 13:06:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:11,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-22 13:06:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:11,118 INFO L225 Difference]: With dead ends: 29 [2020-11-22 13:06:11,119 INFO L226 Difference]: Without dead ends: 29 [2020-11-22 13:06:11,119 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 13:06:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-22 13:06:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-11-22 13:06:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-22 13:06:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-22 13:06:11,129 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 4 [2020-11-22 13:06:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:11,130 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-22 13:06:11,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-22 13:06:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:06:11,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:11,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:06:11,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:06:11,133 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:11,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2467552, now seen corresponding path program 1 times [2020-11-22 13:06:11,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:11,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814862629] [2020-11-22 13:06:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:11,252 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 13:06:11,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814862629] [2020-11-22 13:06:11,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:11,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:11,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978965216] [2020-11-22 13:06:11,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:11,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:11,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:11,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:11,255 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-11-22 13:06:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:11,326 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-22 13:06:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:11,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-22 13:06:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:11,328 INFO L225 Difference]: With dead ends: 24 [2020-11-22 13:06:11,328 INFO L226 Difference]: Without dead ends: 24 [2020-11-22 13:06:11,329 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 13:06:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-22 13:06:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-22 13:06:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-22 13:06:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-22 13:06:11,333 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 4 [2020-11-22 13:06:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:11,334 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-22 13:06:11,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-22 13:06:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:11,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:11,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:11,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:06:11,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:11,337 INFO L82 PathProgramCache]: Analyzing trace with hash 497700460, now seen corresponding path program 1 times [2020-11-22 13:06:11,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:11,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023449797] [2020-11-22 13:06:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:11,481 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 13:06:11,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023449797] [2020-11-22 13:06:11,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:11,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:11,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425543934] [2020-11-22 13:06:11,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:11,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:11,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:11,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:11,484 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-11-22 13:06:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:11,641 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-22 13:06:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:06:11,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-22 13:06:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:11,643 INFO L225 Difference]: With dead ends: 23 [2020-11-22 13:06:11,643 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:06:11,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:06:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 13:06:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 13:06:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-22 13:06:11,648 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2020-11-22 13:06:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:11,649 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-22 13:06:11,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-22 13:06:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:11,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:11,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:11,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:06:11,653 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:11,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:11,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1751154868, now seen corresponding path program 1 times [2020-11-22 13:06:11,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:11,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132990458] [2020-11-22 13:06:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:11,807 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 13:06:11,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132990458] [2020-11-22 13:06:11,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:11,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:11,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322716398] [2020-11-22 13:06:11,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:11,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:11,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:11,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:11,810 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2020-11-22 13:06:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:11,995 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-22 13:06:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:06:12,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-22 13:06:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:12,001 INFO L225 Difference]: With dead ends: 22 [2020-11-22 13:06:12,001 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:06:12,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:06:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 13:06:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 13:06:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-22 13:06:12,005 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2020-11-22 13:06:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:12,005 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-22 13:06:12,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-22 13:06:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:06:12,006 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:12,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:12,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:06:12,007 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:12,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1549205321, now seen corresponding path program 1 times [2020-11-22 13:06:12,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:12,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845382574] [2020-11-22 13:06:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:12,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:12,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:12,157 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:06:12,157 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:12,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:06:12,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:12 BoogieIcfgContainer [2020-11-22 13:06:12,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:12,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:12,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:12,213 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:12,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:10" (3/4) ... [2020-11-22 13:06:12,218 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:06:12,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:12,222 INFO L168 Benchmark]: Toolchain (without parser) took 3597.70 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 77.9 MB in the beginning and 94.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,222 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:12,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.66 ms. Allocated memory is still 109.1 MB. Free memory was 77.6 MB in the beginning and 74.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.30 ms. Allocated memory is still 109.1 MB. Free memory was 74.5 MB in the beginning and 72.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:12,233 INFO L168 Benchmark]: Boogie Preprocessor took 43.16 ms. Allocated memory is still 109.1 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,234 INFO L168 Benchmark]: RCFGBuilder took 730.87 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 81.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,234 INFO L168 Benchmark]: TraceAbstraction took 2111.48 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 80.8 MB in the beginning and 94.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,235 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 134.2 MB. Free memory is still 94.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:12,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 618.66 ms. Allocated memory is still 109.1 MB. Free memory was 77.6 MB in the beginning and 74.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.30 ms. Allocated memory is still 109.1 MB. Free memory was 74.5 MB in the beginning and 72.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.16 ms. Allocated memory is still 109.1 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 730.87 ms. Allocated memory is still 109.1 MB. Free memory was 71.2 MB in the beginning and 81.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2111.48 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 80.8 MB in the beginning and 94.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.06 ms. Allocated memory is still 134.2 MB. Free memory is still 94.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; [L529] pdata->lo = malloc(16) [L530] pdata->hi = malloc(24) [L534] EXPR data->lo [L534] void *lo = data->lo; [L535] EXPR data->hi [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) [L540] data->lo = (void *) 0 [L541] data->hi = (void *) 0 [L547] return 0; [L547] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 19 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 247 SDslu, 19 SDs, 0 SdLazy, 106 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 779 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available 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 13:06:15,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:15,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:15,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-22 13:06:15,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:15,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:15,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:15,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:15,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:15,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:15,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:15,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:15,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:15,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:15,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:15,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:15,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:15,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:15,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:15,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:15,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:15,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:15,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:15,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:15,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:15,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:15,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:15,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:15,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:15,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:15,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:15,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:15,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:15,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:06:15,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:15,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:15,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:15,365 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:15,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:15,366 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:15,366 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:15,367 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:15,367 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:15,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:06:15,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:06:15,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:15,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:15,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:15,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:15,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:15,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:15,370 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:06:15,371 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:06:15,371 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:06:15,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:15,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:15,372 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:06:15,372 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:06:15,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:15,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:15,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:15,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:06:15,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:15,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:15,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:15,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:15,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:15,380 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:06:15,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:06:15,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:15,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:15,395 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_9dbe9512-b88c-47c9-9079-6222d33d3420/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2020-11-22 13:06:15,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:15,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:15,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:15,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:15,880 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:15,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/../../sv-benchmarks/c/memsafety/test-0019-2.i [2020-11-22 13:06:15,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/bc7095b2d/879aaf1c29484d7cbd39084a41beb74b/FLAG76e59c61a [2020-11-22 13:06:16,613 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:16,613 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/sv-benchmarks/c/memsafety/test-0019-2.i [2020-11-22 13:06:16,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/bc7095b2d/879aaf1c29484d7cbd39084a41beb74b/FLAG76e59c61a [2020-11-22 13:06:16,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/bin/utaipan/data/bc7095b2d/879aaf1c29484d7cbd39084a41beb74b [2020-11-22 13:06:16,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:16,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:16,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:16,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:16,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:16,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:16" (1/1) ... [2020-11-22 13:06:16,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1b0fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:16, skipping insertion in model container [2020-11-22 13:06:16,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:16" (1/1) ... [2020-11-22 13:06:17,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:17,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:17,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:17,523 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:17,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:17,673 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:17,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17 WrapperNode [2020-11-22 13:06:17,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:17,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:17,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:17,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:17,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:17,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:17,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:17,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:17,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:17,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:17,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:17,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:17,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:06:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:06:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:06:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:06:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:18,453 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:18,454 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-22 13:06:18,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:18 BoogieIcfgContainer [2020-11-22 13:06:18,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:18,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:18,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:18,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:18,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:16" (1/3) ... [2020-11-22 13:06:18,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0566b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:18, skipping insertion in model container [2020-11-22 13:06:18,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (2/3) ... [2020-11-22 13:06:18,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0566b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:18, skipping insertion in model container [2020-11-22 13:06:18,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:18" (3/3) ... [2020-11-22 13:06:18,471 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2020-11-22 13:06:18,483 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:18,487 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-11-22 13:06:18,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-11-22 13:06:18,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:18,531 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:06:18,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:18,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:18,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:18,532 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:18,533 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:18,533 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-11-22 13:06:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 13:06:18,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:18,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 13:06:18,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:18,563 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-11-22 13:06:18,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:18,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418337432] [2020-11-22 13:06:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:18,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:06:18,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:18,783 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-22 13:06:18,784 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-11-22 13:06:18,784 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:18,792 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:18,796 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:18,796 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-11-22 13:06:18,815 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 13:06:18,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:18,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418337432] [2020-11-22 13:06:18,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:18,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:06:18,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846270495] [2020-11-22 13:06:18,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:18,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:18,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:18,848 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-11-22 13:06:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:18,992 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-22 13:06:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:18,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 13:06:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:19,004 INFO L225 Difference]: With dead ends: 47 [2020-11-22 13:06:19,004 INFO L226 Difference]: Without dead ends: 45 [2020-11-22 13:06:19,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:19,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-22 13:06:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2020-11-22 13:06:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-22 13:06:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-11-22 13:06:19,048 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 3 [2020-11-22 13:06:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:19,048 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-11-22 13:06:19,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-11-22 13:06:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 13:06:19,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:19,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 13:06:19,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:06:19,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:19,273 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2020-11-22 13:06:19,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:19,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221846609] [2020-11-22 13:06:19,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:19,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:06:19,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:19,377 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_34|]} [2020-11-22 13:06:19,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:06:19,385 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-11-22 13:06:19,385 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:19,404 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:06:19,413 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-11-22 13:06:19,414 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:19,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:19,425 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:19,426 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-11-22 13:06:19,467 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 13:06:19,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:19,644 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2020-11-22 13:06:19,691 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 13:06:19,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221846609] [2020-11-22 13:06:19,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:19,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 13:06:19,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116379721] [2020-11-22 13:06:19,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:19,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:19,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:19,694 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 4 states. [2020-11-22 13:06:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:19,877 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-22 13:06:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:19,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-22 13:06:19,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:19,879 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:06:19,880 INFO L226 Difference]: Without dead ends: 37 [2020-11-22 13:06:19,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-22 13:06:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-22 13:06:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-22 13:06:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-11-22 13:06:19,885 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 3 [2020-11-22 13:06:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:19,885 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-11-22 13:06:19,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-11-22 13:06:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:06:19,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:19,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:06:20,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:06:20,087 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:20,088 INFO L82 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2020-11-22 13:06:20,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:20,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456291966] [2020-11-22 13:06:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:20,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:06:20,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:20,172 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_36|]} [2020-11-22 13:06:20,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:06:20,181 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-11-22 13:06:20,182 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:20,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:20,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:06:20,203 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-11-22 13:06:20,207 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:20,221 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:20,227 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:20,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-11-22 13:06:20,314 INFO L441 ElimStorePlain]: Different costs {1=[|v_#valid_37|], 3=[|v_#length_25|]} [2020-11-22 13:06:20,330 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:20,330 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-11-22 13:06:20,331 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:20,351 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:20,390 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:20,390 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 48 [2020-11-22 13:06:20,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:06:20,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:06:20,408 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:20,469 INFO L625 ElimStorePlain]: treesize reduction 40, result has 40.3 percent of original size [2020-11-22 13:06:20,473 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:20,473 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:16 [2020-11-22 13:06:20,504 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 13:06:20,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:20,565 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:25,464 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 23 [2020-11-22 13:06:25,468 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:25,520 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:25,520 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-11-22 13:06:25,521 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:25,558 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:25,558 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-11-22 13:06:25,560 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:25,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:25,603 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-11-22 13:06:25,603 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:22 [2020-11-22 13:06:25,687 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 13:06:25,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456291966] [2020-11-22 13:06:25,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:25,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2020-11-22 13:06:25,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689546282] [2020-11-22 13:06:25,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:06:25,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:25,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:06:25,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2020-11-22 13:06:25,689 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 7 states. [2020-11-22 13:06:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:25,921 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-22 13:06:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:25,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2020-11-22 13:06:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:25,927 INFO L225 Difference]: With dead ends: 36 [2020-11-22 13:06:25,927 INFO L226 Difference]: Without dead ends: 36 [2020-11-22 13:06:25,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2020-11-22 13:06:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-22 13:06:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-22 13:06:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-22 13:06:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-22 13:06:25,935 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 5 [2020-11-22 13:06:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:25,935 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-22 13:06:25,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:06:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-22 13:06:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:25,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:25,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:26,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:06:26,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:26,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:26,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025027, now seen corresponding path program 1 times [2020-11-22 13:06:26,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:26,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893257251] [2020-11-22 13:06:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:26,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 13:06:26,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:26,281 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 13:06:26,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:26,299 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:26,299 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2020-11-22 13:06:26,306 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:26,319 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:26,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:26,325 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:26,325 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:3 [2020-11-22 13:06:26,332 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 13:06:26,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893257251] [2020-11-22 13:06:26,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:26,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:06:26,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165789219] [2020-11-22 13:06:26,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:26,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:26,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:26,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:26,334 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-11-22 13:06:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:26,557 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-11-22 13:06:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:06:26,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 13:06:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:26,560 INFO L225 Difference]: With dead ends: 38 [2020-11-22 13:06:26,560 INFO L226 Difference]: Without dead ends: 38 [2020-11-22 13:06:26,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-22 13:06:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-11-22 13:06:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-22 13:06:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-11-22 13:06:26,564 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 7 [2020-11-22 13:06:26,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:26,565 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-11-22 13:06:26,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:26,565 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-11-22 13:06:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:26,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:26,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:26,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:06:26,783 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:26,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1803025028, now seen corresponding path program 1 times [2020-11-22 13:06:26,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:26,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611034922] [2020-11-22 13:06:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:26,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 13:06:26,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:26,931 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 13:06:26,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:27,068 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:27,097 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:27,098 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2020-11-22 13:06:27,099 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:27,102 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:27,103 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:27,131 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2020-11-22 13:06:27,132 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:27,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:27,207 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:27,211 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-11-22 13:06:27,213 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:31, output treesize:33 [2020-11-22 13:06:27,215 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:27,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:27,550 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:27,710 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 13:06:27,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611034922] [2020-11-22 13:06:27,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:27,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 13:06:27,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953494676] [2020-11-22 13:06:27,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:06:27,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:27,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:06:27,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:27,712 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2020-11-22 13:06:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:27,971 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-11-22 13:06:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:27,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-22 13:06:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:27,973 INFO L225 Difference]: With dead ends: 30 [2020-11-22 13:06:27,973 INFO L226 Difference]: Without dead ends: 30 [2020-11-22 13:06:27,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-22 13:06:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-22 13:06:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-22 13:06:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-22 13:06:27,977 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 7 [2020-11-22 13:06:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:27,977 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-22 13:06:27,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:06:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-22 13:06:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:06:27,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:27,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:28,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:06:28,187 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:28,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1591396527, now seen corresponding path program 1 times [2020-11-22 13:06:28,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:28,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747968324] [2020-11-22 13:06:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:28,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 13:06:28,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:28,294 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 13:06:28,294 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:28,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:28,300 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:28,301 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-22 13:06:28,356 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 13:06:28,357 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:28,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:28,360 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 13:06:28,360 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-22 13:06:28,412 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 13:06:28,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:28,424 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 38 treesize of output 32 [2020-11-22 13:06:28,425 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-11-22 13:06:28,436 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:28,436 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-11-22 13:06:28,437 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:14 [2020-11-22 13:06:28,440 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 13:06:28,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747968324] [2020-11-22 13:06:28,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:28,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2020-11-22 13:06:28,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739105620] [2020-11-22 13:06:28,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:06:28,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:28,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:06:28,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:28,442 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 9 states. [2020-11-22 13:06:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:28,908 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-11-22 13:06:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:06:28,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-22 13:06:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:28,909 INFO L225 Difference]: With dead ends: 32 [2020-11-22 13:06:28,909 INFO L226 Difference]: Without dead ends: 32 [2020-11-22 13:06:28,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:06:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-22 13:06:28,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-11-22 13:06:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-22 13:06:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-11-22 13:06:28,914 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2020-11-22 13:06:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:28,914 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-11-22 13:06:28,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:06:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-11-22 13:06:28,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:06:28,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:28,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:29,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:06:29,119 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2088652025, now seen corresponding path program 1 times [2020-11-22 13:06:29,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:29,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741959404] [2020-11-22 13:06:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:29,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-22 13:06:29,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:29,322 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 13:06:29,322 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:29,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:29,348 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:29,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-11-22 13:06:29,428 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 13:06:29,428 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:29,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:29,451 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:29,451 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:26, output treesize:11 [2020-11-22 13:06:29,573 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 13:06:29,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:29,806 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 38 treesize of output 32 [2020-11-22 13:06:29,807 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 13:06:29,840 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:29,841 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 13:06:29,841 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:32 [2020-11-22 13:06:29,944 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-22 13:06:30,076 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 13:06:30,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741959404] [2020-11-22 13:06:30,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:30,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 16 [2020-11-22 13:06:30,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060719208] [2020-11-22 13:06:30,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-22 13:06:30,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:30,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-22 13:06:30,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-11-22 13:06:30,079 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 17 states. [2020-11-22 13:06:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:31,247 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-11-22 13:06:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:06:31,247 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-11-22 13:06:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:31,248 INFO L225 Difference]: With dead ends: 30 [2020-11-22 13:06:31,248 INFO L226 Difference]: Without dead ends: 30 [2020-11-22 13:06:31,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-11-22 13:06:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-22 13:06:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2020-11-22 13:06:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-22 13:06:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-11-22 13:06:31,251 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2020-11-22 13:06:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:31,251 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-11-22 13:06:31,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-22 13:06:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-11-22 13:06:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:06:31,252 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:31,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:31,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:06:31,453 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:31,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash -323703277, now seen corresponding path program 1 times [2020-11-22 13:06:31,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:31,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820672972] [2020-11-22 13:06:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:31,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 13:06:31,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:31,546 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 13:06:31,547 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,555 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,556 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,556 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-22 13:06:31,604 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 13:06:31,604 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,624 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,624 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 13:06:31,625 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-22 13:06:31,676 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 13:06:31,677 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,679 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,680 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 13:06:31,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-22 13:06:31,721 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 13:06:31,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:31,748 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 46 treesize of output 40 [2020-11-22 13:06:31,749 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 13:06:31,772 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,773 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 13:06:31,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:40 [2020-11-22 13:06:31,847 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 13:06:31,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820672972] [2020-11-22 13:06:31,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:31,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2020-11-22 13:06:31,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556579245] [2020-11-22 13:06:31,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:06:31,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:31,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:06:31,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:31,850 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 10 states. [2020-11-22 13:06:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:32,482 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-22 13:06:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:06:32,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-22 13:06:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:32,485 INFO L225 Difference]: With dead ends: 27 [2020-11-22 13:06:32,485 INFO L226 Difference]: Without dead ends: 27 [2020-11-22 13:06:32,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-11-22 13:06:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-22 13:06:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-22 13:06:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 13:06:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-22 13:06:32,488 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14 [2020-11-22 13:06:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:32,488 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-22 13:06:32,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:06:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-22 13:06:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:06:32,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:32,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:32,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:06:32,691 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 13:06:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1431505607, now seen corresponding path program 1 times [2020-11-22 13:06:32,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:32,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214533493] [2020-11-22 13:06:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9dbe9512-b88c-47c9-9079-6222d33d3420/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 13:06:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:32,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:32,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:32,901 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:06:32,901 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:33,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 13:06:33,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:33 BoogieIcfgContainer [2020-11-22 13:06:33,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:33,127 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:33,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:33,128 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:33,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:18" (3/4) ... [2020-11-22 13:06:33,131 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:06:33,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:33,133 INFO L168 Benchmark]: Toolchain (without parser) took 16160.56 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 42.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:33,133 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 71.3 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:33,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.72 ms. Allocated memory is still 71.3 MB. Free memory was 54.7 MB in the beginning and 43.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:33,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.05 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 41.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:33,135 INFO L168 Benchmark]: Boogie Preprocessor took 53.58 ms. Allocated memory is still 71.3 MB. Free memory was 41.4 MB in the beginning and 39.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:33,135 INFO L168 Benchmark]: RCFGBuilder took 649.97 ms. Allocated memory is still 71.3 MB. Free memory was 39.9 MB in the beginning and 43.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:33,136 INFO L168 Benchmark]: TraceAbstraction took 14666.82 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 42.9 MB in the beginning and 42.1 MB in the end (delta: 785.0 kB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:33,136 INFO L168 Benchmark]: Witness Printer took 4.19 ms. Allocated memory is still 94.4 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:33,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 71.3 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 689.72 ms. Allocated memory is still 71.3 MB. Free memory was 54.7 MB in the beginning and 43.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.05 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 41.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.58 ms. Allocated memory is still 71.3 MB. Free memory was 41.4 MB in the beginning and 39.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 649.97 ms. Allocated memory is still 71.3 MB. Free memory was 39.9 MB in the beginning and 43.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14666.82 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 42.9 MB in the beginning and 42.1 MB in the end (delta: 785.0 kB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.19 ms. Allocated memory is still 94.4 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; [L529] pdata->lo = malloc(16) [L530] pdata->hi = malloc(24) [L534] EXPR data->lo [L534] void *lo = data->lo; [L535] EXPR data->hi [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) [L540] data->lo = (void *) 0 [L541] data->hi = (void *) 0 [L547] return 0; [L547] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 19 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 567 SDslu, 136 SDs, 0 SdLazy, 410 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, 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, 8 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 22 QuantifiedInterpolants, 9685 SizeOfPredicates, 81 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...