./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list-1.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_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ba4928d27614bbdf140b58cd6ad1ef338e79461 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ba4928d27614bbdf140b58cd6ad1ef338e79461 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:38:21,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:38:21,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:38:21,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:38:21,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:38:21,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:38:21,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:38:21,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:38:21,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:38:21,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:38:21,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:38:21,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:38:21,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:38:21,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:38:21,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:38:21,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:38:21,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:38:21,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:38:21,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:38:21,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:38:21,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:38:21,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:38:21,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:38:21,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:38:21,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:38:21,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:38:21,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:38:21,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:38:21,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:38:21,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:38:21,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:38:21,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:38:21,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:38:21,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:38:21,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:38:21,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:38:21,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:38:21,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:38:21,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:38:21,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:38:21,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:38:21,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 23:38:21,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:38:21,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:38:21,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:38:21,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:38:21,616 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:38:21,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:38:21,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:38:21,617 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:38:21,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:38:21,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:38:21,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:38:21,619 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 23:38:21,619 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 23:38:21,619 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 23:38:21,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:38:21,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 23:38:21,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:38:21,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:38:21,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:38:21,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:38:21,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:38:21,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:38:21,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:38:21,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:38:21,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:38:21,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:38:21,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:38:21,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:38:21,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-11-29 23:38:21,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:38:21,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:38:21,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:38:21,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:38:21,926 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:38:21,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/../../sv-benchmarks/c/list-properties/list-1.i [2020-11-29 23:38:21,999 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/a80fa2fdd/ef9a79d7fe294dc595a1964be92fab6a/FLAGcf2a4fa56 [2020-11-29 23:38:22,572 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:38:22,573 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/sv-benchmarks/c/list-properties/list-1.i [2020-11-29 23:38:22,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/a80fa2fdd/ef9a79d7fe294dc595a1964be92fab6a/FLAGcf2a4fa56 [2020-11-29 23:38:22,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/a80fa2fdd/ef9a79d7fe294dc595a1964be92fab6a [2020-11-29 23:38:22,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:38:22,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 23:38:22,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:38:22,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:38:22,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:38:22,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:38:22" (1/1) ... [2020-11-29 23:38:22,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211968ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:22, skipping insertion in model container [2020-11-29 23:38:22,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:38:22" (1/1) ... [2020-11-29 23:38:22,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:38:22,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:38:23,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:38:23,356 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:38:23,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:38:23,467 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:38:23,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23 WrapperNode [2020-11-29 23:38:23,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:38:23,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:38:23,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:38:23,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:38:23,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... [2020-11-29 23:38:23,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... [2020-11-29 23:38:23,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... [2020-11-29 23:38:23,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... [2020-11-29 23:38:23,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... [2020-11-29 23:38:23,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... [2020-11-29 23:38:23,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... [2020-11-29 23:38:23,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:38:23,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:38:23,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:38:23,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:38:23,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:23,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 23:38:23,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:38:23,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 23:38:23,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 23:38:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 23:38:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 23:38:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 23:38:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 23:38:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-29 23:38:23,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 23:38:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 23:38:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 23:38:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 23:38:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 23:38:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 23:38:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:38:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 23:38:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 23:38:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 23:38:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 23:38:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 23:38:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 23:38:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 23:38:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 23:38:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 23:38:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 23:38:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 23:38:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 23:38:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 23:38:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 23:38:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 23:38:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 23:38:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 23:38:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 23:38:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 23:38:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 23:38:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 23:38:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 23:38:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 23:38:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 23:38:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 23:38:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 23:38:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 23:38:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 23:38:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 23:38:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 23:38:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 23:38:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 23:38:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 23:38:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 23:38:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 23:38:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 23:38:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 23:38:23,597 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 23:38:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 23:38:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 23:38:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 23:38:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 23:38:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 23:38:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 23:38:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 23:38:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 23:38:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 23:38:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 23:38:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 23:38:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 23:38:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 23:38:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 23:38:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 23:38:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 23:38:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 23:38:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 23:38:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 23:38:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 23:38:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 23:38:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 23:38:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 23:38:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 23:38:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 23:38:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 23:38:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 23:38:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 23:38:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 23:38:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 23:38:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 23:38:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 23:38:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 23:38:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 23:38:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 23:38:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 23:38:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 23:38:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 23:38:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 23:38:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 23:38:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 23:38:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 23:38:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 23:38:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 23:38:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 23:38:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 23:38:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 23:38:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 23:38:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 23:38:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 23:38:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 23:38:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 23:38:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 23:38:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 23:38:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 23:38:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 23:38:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 23:38:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 23:38:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 23:38:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 23:38:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 23:38:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 23:38:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 23:38:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 23:38:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:38:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:38:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 23:38:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 23:38:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:38:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 23:38:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:38:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:38:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:38:23,980 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-29 23:38:24,277 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:38:24,277 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 23:38:24,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:24 BoogieIcfgContainer [2020-11-29 23:38:24,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:38:24,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:38:24,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:38:24,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:38:24,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:38:22" (1/3) ... [2020-11-29 23:38:24,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8fef97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:38:24, skipping insertion in model container [2020-11-29 23:38:24,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:23" (2/3) ... [2020-11-29 23:38:24,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8fef97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:38:24, skipping insertion in model container [2020-11-29 23:38:24,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:24" (3/3) ... [2020-11-29 23:38:24,299 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-11-29 23:38:24,318 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:38:24,325 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-11-29 23:38:24,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-11-29 23:38:24,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:38:24,356 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 23:38:24,357 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:38:24,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:38:24,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:38:24,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:38:24,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:38:24,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:38:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-11-29 23:38:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:38:24,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:24,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:24,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:24,404 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-11-29 23:38:24,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:24,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224187998] [2020-11-29 23:38:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:24,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:24,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224187998] [2020-11-29 23:38:24,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:24,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:38:24,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338144470] [2020-11-29 23:38:24,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:38:24,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:24,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:38:24,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:38:24,718 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-11-29 23:38:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:25,044 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-11-29 23:38:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:38:25,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 23:38:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:25,064 INFO L225 Difference]: With dead ends: 82 [2020-11-29 23:38:25,065 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 23:38:25,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:38:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 23:38:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-11-29 23:38:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-29 23:38:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-11-29 23:38:25,118 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-11-29 23:38:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:25,119 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-11-29 23:38:25,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:38:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-11-29 23:38:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:38:25,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:25,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:25,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:38:25,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-11-29 23:38:25,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:25,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99237073] [2020-11-29 23:38:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:25,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:25,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99237073] [2020-11-29 23:38:25,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:25,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:38:25,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595509602] [2020-11-29 23:38:25,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:38:25,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:25,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:38:25,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:38:25,290 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-11-29 23:38:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:25,533 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-11-29 23:38:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:38:25,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 23:38:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:25,536 INFO L225 Difference]: With dead ends: 93 [2020-11-29 23:38:25,536 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 23:38:25,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:38:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 23:38:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-11-29 23:38:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-29 23:38:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-11-29 23:38:25,546 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-11-29 23:38:25,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:25,547 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-11-29 23:38:25,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:38:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-11-29 23:38:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 23:38:25,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:25,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:25,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:38:25,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:25,549 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-11-29 23:38:25,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:25,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185914313] [2020-11-29 23:38:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:25,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185914313] [2020-11-29 23:38:25,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:25,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:38:25,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146897782] [2020-11-29 23:38:25,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:25,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:25,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:25,712 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-11-29 23:38:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:26,058 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-11-29 23:38:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:38:26,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 23:38:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:26,060 INFO L225 Difference]: With dead ends: 119 [2020-11-29 23:38:26,061 INFO L226 Difference]: Without dead ends: 119 [2020-11-29 23:38:26,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:38:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-11-29 23:38:26,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-11-29 23:38:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-29 23:38:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-11-29 23:38:26,069 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-11-29 23:38:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:26,070 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-11-29 23:38:26,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-11-29 23:38:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 23:38:26,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:26,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:26,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:38:26,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:26,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-11-29 23:38:26,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:26,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831386613] [2020-11-29 23:38:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:26,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831386613] [2020-11-29 23:38:26,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:26,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:38:26,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468793052] [2020-11-29 23:38:26,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:26,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:26,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:26,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:26,185 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-11-29 23:38:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:26,622 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-11-29 23:38:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:38:26,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 23:38:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:26,624 INFO L225 Difference]: With dead ends: 110 [2020-11-29 23:38:26,624 INFO L226 Difference]: Without dead ends: 110 [2020-11-29 23:38:26,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:38:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-29 23:38:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-11-29 23:38:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-29 23:38:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-11-29 23:38:26,634 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-11-29 23:38:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:26,634 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-11-29 23:38:26,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-11-29 23:38:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 23:38:26,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:26,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:26,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:38:26,636 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-11-29 23:38:26,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:26,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127361861] [2020-11-29 23:38:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:26,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127361861] [2020-11-29 23:38:26,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:26,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:38:26,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187086089] [2020-11-29 23:38:26,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:26,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:26,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:26,782 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-11-29 23:38:27,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:27,206 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-11-29 23:38:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:38:27,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 23:38:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:27,208 INFO L225 Difference]: With dead ends: 111 [2020-11-29 23:38:27,208 INFO L226 Difference]: Without dead ends: 111 [2020-11-29 23:38:27,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:38:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-29 23:38:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-11-29 23:38:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-29 23:38:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-29 23:38:27,215 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-11-29 23:38:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:27,215 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-29 23:38:27,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-29 23:38:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:38:27,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:27,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:27,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:38:27,220 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-11-29 23:38:27,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:27,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418936722] [2020-11-29 23:38:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:27,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:27,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418936722] [2020-11-29 23:38:27,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:27,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:38:27,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578990172] [2020-11-29 23:38:27,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:27,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:27,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:27,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:27,306 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-29 23:38:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:27,588 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-11-29 23:38:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:38:27,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-29 23:38:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:27,590 INFO L225 Difference]: With dead ends: 107 [2020-11-29 23:38:27,590 INFO L226 Difference]: Without dead ends: 107 [2020-11-29 23:38:27,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:38:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-29 23:38:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-11-29 23:38:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-29 23:38:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-11-29 23:38:27,597 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-11-29 23:38:27,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:27,598 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-11-29 23:38:27,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-11-29 23:38:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:38:27,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:27,599 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:27,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:38:27,600 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:27,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:27,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-11-29 23:38:27,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:27,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239893688] [2020-11-29 23:38:27,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:27,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239893688] [2020-11-29 23:38:27,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:27,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:38:27,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383091680] [2020-11-29 23:38:27,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:27,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:27,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:27,705 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-11-29 23:38:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:27,999 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-11-29 23:38:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:38:28,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-29 23:38:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:28,001 INFO L225 Difference]: With dead ends: 91 [2020-11-29 23:38:28,001 INFO L226 Difference]: Without dead ends: 91 [2020-11-29 23:38:28,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:38:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-29 23:38:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-11-29 23:38:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-29 23:38:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-11-29 23:38:28,008 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-11-29 23:38:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:28,008 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-11-29 23:38:28,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-11-29 23:38:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:38:28,009 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:28,010 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:28,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:38:28,010 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:28,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-11-29 23:38:28,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:28,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084430931] [2020-11-29 23:38:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:28,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:28,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084430931] [2020-11-29 23:38:28,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:28,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:38:28,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56391982] [2020-11-29 23:38:28,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:28,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:28,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:28,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:28,125 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-11-29 23:38:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:28,575 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-11-29 23:38:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:38:28,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-29 23:38:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:28,577 INFO L225 Difference]: With dead ends: 88 [2020-11-29 23:38:28,577 INFO L226 Difference]: Without dead ends: 88 [2020-11-29 23:38:28,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:38:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-29 23:38:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-11-29 23:38:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 23:38:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-11-29 23:38:28,583 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-11-29 23:38:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:28,583 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-11-29 23:38:28,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:28,584 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-11-29 23:38:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 23:38:28,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:28,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:28,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:38:28,585 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-11-29 23:38:28,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:28,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434733823] [2020-11-29 23:38:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:28,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:38:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:28,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434733823] [2020-11-29 23:38:28,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:28,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:38:28,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235232548] [2020-11-29 23:38:28,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:38:28,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:38:28,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:38:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:38:28,708 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-11-29 23:38:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:28,956 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-11-29 23:38:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:38:28,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-29 23:38:28,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:28,958 INFO L225 Difference]: With dead ends: 92 [2020-11-29 23:38:28,958 INFO L226 Difference]: Without dead ends: 92 [2020-11-29 23:38:28,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:38:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-29 23:38:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-11-29 23:38:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 23:38:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-11-29 23:38:28,963 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-11-29 23:38:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:28,963 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-11-29 23:38:28,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:38:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-11-29 23:38:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:38:28,965 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:28,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:28,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 23:38:28,965 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:28,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:28,966 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-11-29 23:38:28,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:38:28,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383193565] [2020-11-29 23:38:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:38:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:38:28,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:38:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:38:28,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:38:29,017 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:38:29,018 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:38:29,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 23:38:29,031 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 23:38:29,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:38:29 BoogieIcfgContainer [2020-11-29 23:38:29,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:38:29,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:38:29,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:38:29,046 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:38:29,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:24" (3/4) ... [2020-11-29 23:38:29,050 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:38:29,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:38:29,053 INFO L168 Benchmark]: Toolchain (without parser) took 6186.92 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 71.9 MB in the beginning and 87.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:29,054 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 33.7 MB in the beginning and 33.6 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:38:29,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.19 ms. Allocated memory is still 102.8 MB. Free memory was 71.6 MB in the beginning and 68.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:29,055 INFO L168 Benchmark]: Boogie Preprocessor took 59.61 ms. Allocated memory is still 102.8 MB. Free memory was 68.2 MB in the beginning and 65.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:29,056 INFO L168 Benchmark]: RCFGBuilder took 752.82 ms. Allocated memory is still 102.8 MB. Free memory was 65.5 MB in the beginning and 66.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:29,057 INFO L168 Benchmark]: TraceAbstraction took 4760.56 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 66.0 MB in the beginning and 87.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:29,057 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 148.9 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:38:29,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 33.7 MB in the beginning and 33.6 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 601.19 ms. Allocated memory is still 102.8 MB. Free memory was 71.6 MB in the beginning and 68.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.61 ms. Allocated memory is still 102.8 MB. Free memory was 68.2 MB in the beginning and 65.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 752.82 ms. Allocated memory is still 102.8 MB. Free memory was 65.5 MB in the beginning and 66.6 MB in the end (delta: -1.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4760.56 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 66.0 MB in the beginning and 87.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 148.9 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=4, 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, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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 [2020-11-29 23:38:31,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:38:31,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:38:31,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:38:31,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:38:31,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:38:31,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:38:31,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:38:31,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:38:31,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:38:31,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:38:31,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:38:31,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:38:31,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:38:31,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:38:31,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:38:31,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:38:31,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:38:31,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:38:31,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:38:31,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:38:31,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:38:31,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:38:31,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:38:31,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:38:31,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:38:31,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:38:31,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:38:31,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:38:31,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:38:31,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:38:31,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:38:31,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:38:31,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:38:31,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:38:31,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:38:31,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:38:31,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:38:31,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:38:31,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:38:31,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:38:31,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-29 23:38:31,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:38:31,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:38:31,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:38:31,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:38:31,983 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:38:31,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:38:31,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:38:31,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:38:31,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:38:31,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:38:31,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:38:31,986 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 23:38:31,987 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 23:38:31,987 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 23:38:31,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:38:31,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 23:38:31,988 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:38:31,988 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:38:31,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:38:31,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:38:31,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:38:31,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:38:31,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:38:31,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:38:31,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:38:31,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:38:31,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:38:31,992 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:38:31,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:38:31,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:38:31,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:38:31,993 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_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-11-29 23:38:32,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:38:32,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:38:32,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:38:32,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:38:32,555 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:38:32,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/../../sv-benchmarks/c/list-properties/list-1.i [2020-11-29 23:38:32,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/f3eed53c0/29f1525031f14cf9be3b13c9f08beb0d/FLAGaa346419b [2020-11-29 23:38:33,336 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:38:33,337 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/sv-benchmarks/c/list-properties/list-1.i [2020-11-29 23:38:33,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/f3eed53c0/29f1525031f14cf9be3b13c9f08beb0d/FLAGaa346419b [2020-11-29 23:38:33,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/data/f3eed53c0/29f1525031f14cf9be3b13c9f08beb0d [2020-11-29 23:38:33,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:38:33,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 23:38:33,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:38:33,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:38:33,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:38:33,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:38:33" (1/1) ... [2020-11-29 23:38:33,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@703c0286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:33, skipping insertion in model container [2020-11-29 23:38:33,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:38:33" (1/1) ... [2020-11-29 23:38:33,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:38:33,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:38:34,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:38:34,132 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:38:34,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:38:34,321 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:38:34,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34 WrapperNode [2020-11-29 23:38:34,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:38:34,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:38:34,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:38:34,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:38:34,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... [2020-11-29 23:38:34,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... [2020-11-29 23:38:34,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... [2020-11-29 23:38:34,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... [2020-11-29 23:38:34,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... [2020-11-29 23:38:34,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... [2020-11-29 23:38:34,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... [2020-11-29 23:38:34,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:38:34,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:38:34,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:38:34,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:38:34,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 23:38:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:38:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 23:38:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 23:38:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 23:38:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 23:38:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 23:38:34,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 23:38:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 23:38:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-29 23:38:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 23:38:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 23:38:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 23:38:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 23:38:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 23:38:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 23:38:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:38:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 23:38:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 23:38:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 23:38:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 23:38:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 23:38:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 23:38:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 23:38:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 23:38:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 23:38:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 23:38:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 23:38:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 23:38:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 23:38:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 23:38:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 23:38:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 23:38:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 23:38:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 23:38:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 23:38:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 23:38:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 23:38:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 23:38:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 23:38:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 23:38:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 23:38:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 23:38:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 23:38:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 23:38:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 23:38:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 23:38:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 23:38:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 23:38:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 23:38:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 23:38:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 23:38:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 23:38:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 23:38:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 23:38:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 23:38:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 23:38:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 23:38:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 23:38:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 23:38:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 23:38:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 23:38:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 23:38:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 23:38:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 23:38:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 23:38:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 23:38:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 23:38:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 23:38:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 23:38:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 23:38:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 23:38:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 23:38:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 23:38:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 23:38:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 23:38:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 23:38:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 23:38:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 23:38:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 23:38:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 23:38:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 23:38:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 23:38:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 23:38:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 23:38:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 23:38:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 23:38:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 23:38:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 23:38:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 23:38:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 23:38:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 23:38:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 23:38:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 23:38:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 23:38:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 23:38:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 23:38:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 23:38:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 23:38:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 23:38:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 23:38:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 23:38:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 23:38:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 23:38:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 23:38:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 23:38:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 23:38:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 23:38:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 23:38:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 23:38:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 23:38:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 23:38:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 23:38:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 23:38:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 23:38:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 23:38:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 23:38:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 23:38:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 23:38:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 23:38:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 23:38:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 23:38:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 23:38:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 23:38:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-29 23:38:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 23:38:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:38:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 23:38:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 23:38:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 23:38:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 23:38:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 23:38:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:38:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:38:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 23:38:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-29 23:38:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-29 23:38:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:38:35,391 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-29 23:38:35,970 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:38:35,971 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 23:38:35,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:35 BoogieIcfgContainer [2020-11-29 23:38:35,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:38:35,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:38:35,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:38:35,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:38:35,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:38:33" (1/3) ... [2020-11-29 23:38:35,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af65818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:38:35, skipping insertion in model container [2020-11-29 23:38:35,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:38:34" (2/3) ... [2020-11-29 23:38:35,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af65818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:38:35, skipping insertion in model container [2020-11-29 23:38:35,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:35" (3/3) ... [2020-11-29 23:38:35,983 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-11-29 23:38:35,997 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:38:36,013 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-11-29 23:38:36,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-11-29 23:38:36,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:38:36,055 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 23:38:36,055 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:38:36,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:38:36,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:38:36,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:38:36,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:38:36,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:38:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-29 23:38:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:38:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:36,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:36,103 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061945, now seen corresponding path program 1 times [2020-11-29 23:38:36,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:36,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637161391] [2020-11-29 23:38:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:36,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:38:36,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:36,543 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 [2020-11-29 23:38:36,545 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:36,561 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:36,561 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:36,562 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 23:38:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:36,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:36,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637161391] [2020-11-29 23:38:36,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:36,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 23:38:36,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261942043] [2020-11-29 23:38:36,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:38:36,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:38:36,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:38:36,787 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-11-29 23:38:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:37,759 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-11-29 23:38:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:38:37,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 23:38:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:37,772 INFO L225 Difference]: With dead ends: 119 [2020-11-29 23:38:37,772 INFO L226 Difference]: Without dead ends: 108 [2020-11-29 23:38:37,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:38:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-29 23:38:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-11-29 23:38:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 23:38:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-11-29 23:38:37,818 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 10 [2020-11-29 23:38:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:37,818 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-11-29 23:38:37,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:38:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-11-29 23:38:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:38:37,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:37,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:38,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:38:38,043 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061944, now seen corresponding path program 1 times [2020-11-29 23:38:38,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:38,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647554528] [2020-11-29 23:38:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:38,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:38:38,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:38,280 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 [2020-11-29 23:38:38,281 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:38,288 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:38,289 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:38,289 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 23:38:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:38,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:38,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647554528] [2020-11-29 23:38:38,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:38,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 23:38:38,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266387336] [2020-11-29 23:38:38,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:38:38,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:38,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:38:38,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:38:38,335 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand 4 states. [2020-11-29 23:38:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:38,646 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-11-29 23:38:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:38:38,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 23:38:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:38,649 INFO L225 Difference]: With dead ends: 77 [2020-11-29 23:38:38,649 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 23:38:38,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:38:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 23:38:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-29 23:38:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-29 23:38:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-11-29 23:38:38,668 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2020-11-29 23:38:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:38,668 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-11-29 23:38:38,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:38:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-11-29 23:38:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:38:38,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:38,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:38,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:38:38,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash 318419033, now seen corresponding path program 1 times [2020-11-29 23:38:38,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:38,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476543613] [2020-11-29 23:38:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:39,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:38:39,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:39,101 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-29 23:38:39,101 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:39,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:39,105 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:39,105 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-11-29 23:38:39,151 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-29 23:38:39,152 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:39,158 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:39,159 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:39,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-29 23:38:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:39,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:39,257 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 16 treesize of output 12 [2020-11-29 23:38:39,258 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-29 23:38:39,265 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:39,265 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-29 23:38:39,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:7 [2020-11-29 23:38:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:39,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476543613] [2020-11-29 23:38:39,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:39,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-29 23:38:39,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263115293] [2020-11-29 23:38:39,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:38:39,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:38:39,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:38:39,301 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 9 states. [2020-11-29 23:38:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:40,262 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-11-29 23:38:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 23:38:40,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-29 23:38:40,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:40,265 INFO L225 Difference]: With dead ends: 150 [2020-11-29 23:38:40,265 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 23:38:40,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-11-29 23:38:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 23:38:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 83. [2020-11-29 23:38:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-29 23:38:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-11-29 23:38:40,278 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 17 [2020-11-29 23:38:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:40,279 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-11-29 23:38:40,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:38:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-11-29 23:38:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:38:40,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:40,281 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:40,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 23:38:40,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:40,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575182, now seen corresponding path program 1 times [2020-11-29 23:38:40,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:40,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972410963] [2020-11-29 23:38:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:40,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:38:40,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:40,743 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 [2020-11-29 23:38:40,743 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:40,752 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,752 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 23:38:40,785 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 [2020-11-29 23:38:40,785 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,807 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:40,817 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 [2020-11-29 23:38:40,817 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:40,839 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,839 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-29 23:38:40,894 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 [2020-11-29 23:38:40,894 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:40,917 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-11-29 23:38:40,917 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:40,926 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:40,926 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-29 23:38:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:40,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:41,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972410963] [2020-11-29 23:38:41,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:41,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 23:38:41,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943297368] [2020-11-29 23:38:41,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:38:41,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:41,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:38:41,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:38:41,298 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 10 states. [2020-11-29 23:38:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:43,051 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-11-29 23:38:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:38:43,054 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-29 23:38:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:43,055 INFO L225 Difference]: With dead ends: 111 [2020-11-29 23:38:43,056 INFO L226 Difference]: Without dead ends: 111 [2020-11-29 23:38:43,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:38:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-29 23:38:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-11-29 23:38:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-29 23:38:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2020-11-29 23:38:43,065 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 17 [2020-11-29 23:38:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:43,065 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2020-11-29 23:38:43,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:38:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2020-11-29 23:38:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:38:43,067 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:43,067 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:43,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 23:38:43,281 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575183, now seen corresponding path program 1 times [2020-11-29 23:38:43,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:43,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287159412] [2020-11-29 23:38:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:43,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:38:43,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:43,490 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 [2020-11-29 23:38:43,490 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:43,493 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:43,493 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:43,494 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 23:38:43,521 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 [2020-11-29 23:38:43,521 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:43,538 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:43,539 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:43,540 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-29 23:38:43,564 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 [2020-11-29 23:38:43,565 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:43,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:43,570 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:43,571 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-29 23:38:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:43,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:43,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287159412] [2020-11-29 23:38:43,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:43,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 23:38:43,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976617576] [2020-11-29 23:38:43,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:38:43,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:43,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:38:43,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:38:43,619 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 6 states. [2020-11-29 23:38:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:44,116 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-11-29 23:38:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:38:44,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-29 23:38:44,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:44,118 INFO L225 Difference]: With dead ends: 102 [2020-11-29 23:38:44,118 INFO L226 Difference]: Without dead ends: 102 [2020-11-29 23:38:44,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:38:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-29 23:38:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 81. [2020-11-29 23:38:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 23:38:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-11-29 23:38:44,126 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 17 [2020-11-29 23:38:44,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:44,127 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-11-29 23:38:44,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:38:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-11-29 23:38:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:38:44,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:44,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:44,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 23:38:44,328 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:44,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715062, now seen corresponding path program 1 times [2020-11-29 23:38:44,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:44,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72955681] [2020-11-29 23:38:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:44,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:38:44,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:44,528 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 [2020-11-29 23:38:44,528 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:44,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:44,531 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:44,532 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 23:38:44,551 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 [2020-11-29 23:38:44,551 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:44,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:44,567 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:44,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-11-29 23:38:44,600 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 [2020-11-29 23:38:44,600 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:44,604 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:44,604 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:44,605 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-11-29 23:38:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:44,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:44,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72955681] [2020-11-29 23:38:44,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:44,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 23:38:44,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738152097] [2020-11-29 23:38:44,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:38:44,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:44,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:38:44,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:38:44,665 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 6 states. [2020-11-29 23:38:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:45,132 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-11-29 23:38:45,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:38:45,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-29 23:38:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:45,134 INFO L225 Difference]: With dead ends: 100 [2020-11-29 23:38:45,134 INFO L226 Difference]: Without dead ends: 100 [2020-11-29 23:38:45,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:38:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-29 23:38:45,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-11-29 23:38:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-29 23:38:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-11-29 23:38:45,141 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 18 [2020-11-29 23:38:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:45,141 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-11-29 23:38:45,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:38:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-11-29 23:38:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 23:38:45,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:45,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:45,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 23:38:45,355 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:45,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715063, now seen corresponding path program 1 times [2020-11-29 23:38:45,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:45,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532689187] [2020-11-29 23:38:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:45,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:38:45,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:45,534 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 [2020-11-29 23:38:45,534 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,543 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:45,543 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,543 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 23:38:45,575 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 [2020-11-29 23:38:45,576 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:45,608 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 [2020-11-29 23:38:45,608 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,626 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:45,627 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,627 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-11-29 23:38:45,667 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 [2020-11-29 23:38:45,668 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:45,695 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-11-29 23:38:45,695 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:45,709 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:45,710 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-11-29 23:38:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:45,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:46,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532689187] [2020-11-29 23:38:46,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:46,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-29 23:38:46,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219187295] [2020-11-29 23:38:46,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:38:46,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:46,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:38:46,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:38:46,033 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 10 states. [2020-11-29 23:38:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:47,428 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-11-29 23:38:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:38:47,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-29 23:38:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:47,430 INFO L225 Difference]: With dead ends: 98 [2020-11-29 23:38:47,430 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 23:38:47,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:38:47,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 23:38:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2020-11-29 23:38:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 23:38:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-11-29 23:38:47,437 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 18 [2020-11-29 23:38:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:47,437 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-11-29 23:38:47,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:38:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-11-29 23:38:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 23:38:47,439 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:47,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:47,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 23:38:47,640 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1010435462, now seen corresponding path program 1 times [2020-11-29 23:38:47,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:47,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001793951] [2020-11-29 23:38:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:38:47,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:38:47,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:38:47,834 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-29 23:38:47,835 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:47,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:47,837 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:47,837 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-11-29 23:38:47,867 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-29 23:38:47,867 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 23:38:47,869 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:47,870 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 23:38:47,870 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-11-29 23:38:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:47,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:38:47,937 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 18 treesize of output 14 [2020-11-29 23:38:47,940 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-29 23:38:47,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 23:38:47,948 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-29 23:38:47,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2020-11-29 23:38:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:38:47,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001793951] [2020-11-29 23:38:47,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:38:47,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-29 23:38:47,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663846669] [2020-11-29 23:38:47,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:38:47,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:38:47,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:38:47,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:38:47,957 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 9 states. [2020-11-29 23:38:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:38:48,737 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-11-29 23:38:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 23:38:48,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-11-29 23:38:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:38:48,740 INFO L225 Difference]: With dead ends: 135 [2020-11-29 23:38:48,740 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 23:38:48,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-11-29 23:38:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 23:38:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 85. [2020-11-29 23:38:48,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 23:38:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-11-29 23:38:48,759 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2020-11-29 23:38:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:38:48,760 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-11-29 23:38:48,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:38:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-11-29 23:38:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:38:48,761 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:38:48,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:38:48,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 23:38:48,987 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-11-29 23:38:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:38:48,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1257104172, now seen corresponding path program 1 times [2020-11-29 23:38:48,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:38:48,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199748229] [2020-11-29 23:38:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7053de53-524d-49ef-9a52-5557cec07815/bin/uautomizer/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 [2020-11-29 23:38:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:38:49,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:38:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:38:49,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:38:49,263 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 23:38:49,264 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:38:49,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-29 23:38:49,475 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 23:38:49,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:38:49 BoogieIcfgContainer [2020-11-29 23:38:49,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:38:49,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:38:49,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:38:49,490 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:38:49,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:38:35" (3/4) ... [2020-11-29 23:38:49,495 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:38:49,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:38:49,496 INFO L168 Benchmark]: Toolchain (without parser) took 15904.07 ms. Allocated memory was 56.6 MB in the beginning and 132.1 MB in the end (delta: 75.5 MB). Free memory was 33.7 MB in the beginning and 48.1 MB in the end (delta: -14.3 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:49,497 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:38:49,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.11 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 26.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:49,498 INFO L168 Benchmark]: Boogie Preprocessor took 150.72 ms. Allocated memory is still 56.6 MB. Free memory was 26.9 MB in the beginning and 23.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:49,498 INFO L168 Benchmark]: RCFGBuilder took 1495.26 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 23.7 MB in the beginning and 61.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:49,499 INFO L168 Benchmark]: TraceAbstraction took 13514.32 ms. Allocated memory was 81.8 MB in the beginning and 132.1 MB in the end (delta: 50.3 MB). Free memory was 60.6 MB in the beginning and 48.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:38:49,500 INFO L168 Benchmark]: Witness Printer took 4.99 ms. Allocated memory is still 132.1 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:38:49,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 729.11 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 26.9 MB in the end (delta: 6.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 150.72 ms. Allocated memory is still 56.6 MB. Free memory was 26.9 MB in the beginning and 23.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1495.26 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 23.7 MB in the beginning and 61.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13514.32 ms. Allocated memory was 81.8 MB in the beginning and 132.1 MB in the end (delta: 50.3 MB). Free memory was 60.6 MB in the beginning and 48.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.99 ms. Allocated memory is still 132.1 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L551] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L552] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 98 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 362 SDtfs, 858 SDslu, 1153 SDs, 0 SdLazy, 1460 SolverSat, 160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 242 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 15614 SizeOfPredicates, 62 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 16/16 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...