./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/config/svcomp-MemCleanup-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3589167bbf5d7f5cd80f4f92aa27b7dbe19a0217 ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:54:08,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:54:08,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:54:08,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:54:08,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:54:08,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:54:08,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:54:08,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:54:08,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:54:08,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:54:08,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:54:08,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:54:08,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:54:08,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:54:08,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:54:08,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:54:08,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:54:08,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:54:08,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:54:08,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:54:08,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:54:08,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:54:08,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:54:08,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:54:08,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:54:08,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:54:08,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:54:08,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:54:08,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:54:08,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:54:08,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:54:08,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:54:08,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:54:08,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:54:08,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:54:08,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:54:08,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:54:08,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:54:08,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:54:08,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:54:08,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:54:08,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/config/svcomp-MemCleanup-32bit-Kojak_Default.epf [2020-11-29 19:54:08,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:54:08,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:54:08,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:54:08,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:54:08,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:54:08,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:54:08,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:54:08,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:54:08,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:54:08,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:54:08,611 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:54:08,612 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:54:08,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:54:08,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:54:08,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:54:08,613 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 19:54:08,613 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 19:54:08,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:54:08,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:54:08,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 19:54:08,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:54:08,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:54:08,614 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 19:54:08,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:54:08,615 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_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3589167bbf5d7f5cd80f4f92aa27b7dbe19a0217 [2020-11-29 19:54:08,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:54:08,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:54:08,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:54:08,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:54:08,944 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:54:08,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-11-29 19:54:09,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/data/30ccd93c9/76c95543e8fd413eb0377b80842d4e8f/FLAGd57810275 [2020-11-29 19:54:09,711 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:54:09,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-11-29 19:54:09,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/data/30ccd93c9/76c95543e8fd413eb0377b80842d4e8f/FLAGd57810275 [2020-11-29 19:54:09,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/data/30ccd93c9/76c95543e8fd413eb0377b80842d4e8f [2020-11-29 19:54:09,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:54:09,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:54:09,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:54:09,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:54:09,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:54:09,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:54:09" (1/1) ... [2020-11-29 19:54:09,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9d83f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:09, skipping insertion in model container [2020-11-29 19:54:09,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:54:09" (1/1) ... [2020-11-29 19:54:10,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:54:10,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:54:10,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:54:10,508 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:54:10,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:54:10,657 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:54:10,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10 WrapperNode [2020-11-29 19:54:10,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:54:10,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:54:10,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:54:10,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:54:10,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:54:10,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:54:10,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:54:10,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:54:10,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... [2020-11-29 19:54:10,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:54:10,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:54:10,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:54:10,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:54:10,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:54:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2020-11-29 19:54:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:54:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:54:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:54:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:54:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:54:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:54:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:54:10,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:54:11,636 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:54:11,636 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 19:54:11,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:54:11 BoogieIcfgContainer [2020-11-29 19:54:11,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:54:11,640 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 19:54:11,640 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 19:54:11,653 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 19:54:11,653 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:54:11" (1/1) ... [2020-11-29 19:54:11,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:54:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 32 states and 39 transitions. [2020-11-29 19:54:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-11-29 19:54:11,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:54:11,709 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:11,837 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 19:54:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 32 states and 38 transitions. [2020-11-29 19:54:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-11-29 19:54:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:54:11,847 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:11,990 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 19:54:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 34 states and 42 transitions. [2020-11-29 19:54:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-11-29 19:54:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:54:12,211 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:12,269 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 19:54:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 33 states and 41 transitions. [2020-11-29 19:54:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2020-11-29 19:54:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:54:12,337 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:12,428 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 19:54:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 32 states and 40 transitions. [2020-11-29 19:54:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-11-29 19:54:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:54:12,620 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:12,734 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 19:54:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 35 states and 45 transitions. [2020-11-29 19:54:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2020-11-29 19:54:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:54:13,007 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:13,193 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 19:54:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 37 states and 48 transitions. [2020-11-29 19:54:13,653 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-11-29 19:54:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:54:13,654 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 40 states and 54 transitions. [2020-11-29 19:54:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2020-11-29 19:54:14,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:54:14,309 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 40 states and 52 transitions. [2020-11-29 19:54:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2020-11-29 19:54:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:54:14,702 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:14,859 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 19:54:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 40 states and 49 transitions. [2020-11-29 19:54:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-11-29 19:54:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:54:15,265 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 43 states and 54 transitions. [2020-11-29 19:54:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2020-11-29 19:54:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:54:15,903 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:54:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 43 states and 52 transitions. [2020-11-29 19:54:16,176 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-11-29 19:54:16,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:54:16,176 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 19:54:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 45 states and 58 transitions. [2020-11-29 19:54:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2020-11-29 19:54:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:54:17,246 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 19:54:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 43 states and 52 transitions. [2020-11-29 19:54:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-11-29 19:54:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:54:17,532 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:54:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 45 states and 56 transitions. [2020-11-29 19:54:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-11-29 19:54:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:54:19,189 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:54:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 47 states and 60 transitions. [2020-11-29 19:54:22,027 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2020-11-29 19:54:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:54:22,028 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:54:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 49 states and 63 transitions. [2020-11-29 19:54:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2020-11-29 19:54:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:54:24,366 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 51 states and 67 transitions. [2020-11-29 19:54:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2020-11-29 19:54:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:54:29,202 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 53 states and 70 transitions. [2020-11-29 19:54:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2020-11-29 19:54:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:54:34,596 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 19:54:36,087 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 19:54:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:54:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 69 states and 96 transitions. [2020-11-29 19:54:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-11-29 19:54:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:54:44,989 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:54:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:54:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:54:52,345 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-11-29 19:54:55,514 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-11-29 19:55:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:55:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 84 states and 120 transitions. [2020-11-29 19:55:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2020-11-29 19:55:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:55:02,807 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:55:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:55:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:55:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 88 states and 126 transitions. [2020-11-29 19:55:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2020-11-29 19:55:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:55:11,008 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:55:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-29 19:55:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:55:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 96 states and 148 transitions. [2020-11-29 19:55:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 148 transitions. [2020-11-29 19:55:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:55:19,705 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:55:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 19:55:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:55:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 104 states and 170 transitions. [2020-11-29 19:55:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 170 transitions. [2020-11-29 19:55:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:55:30,294 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:55:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 19:55:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:55:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 109 states and 180 transitions. [2020-11-29 19:55:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 180 transitions. [2020-11-29 19:55:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:55:39,666 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:55:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:55:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 19:55:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:55:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 110 states and 181 transitions. [2020-11-29 19:55:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 181 transitions. [2020-11-29 19:55:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 19:55:42,594 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:55:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:55:42,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:55:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:55:42,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:55:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:55:42,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:55:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:55:42,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:55:42,879 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 26 iterations. [2020-11-29 19:55:42,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 07:55:42 ImpRootNode [2020-11-29 19:55:42,951 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 19:55:42,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:55:42,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:55:42,970 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:55:42,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:54:11" (3/4) ... [2020-11-29 19:55:42,973 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:55:43,125 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e85abb89-c97a-4a2d-a9d8-99f6f2070e8e/bin/ukojak/witness.graphml [2020-11-29 19:55:43,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:55:43,129 INFO L168 Benchmark]: Toolchain (without parser) took 93144.35 ms. Allocated memory was 125.8 MB in the beginning and 750.8 MB in the end (delta: 625.0 MB). Free memory was 95.3 MB in the beginning and 682.9 MB in the end (delta: -587.7 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:43,130 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:55:43,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.75 ms. Allocated memory is still 125.8 MB. Free memory was 95.3 MB in the beginning and 91.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:43,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.80 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:43,138 INFO L168 Benchmark]: Boogie Preprocessor took 65.58 ms. Allocated memory is still 125.8 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:55:43,139 INFO L168 Benchmark]: RCFGBuilder took 824.49 ms. Allocated memory is still 125.8 MB. Free memory was 87.1 MB in the beginning and 57.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:43,140 INFO L168 Benchmark]: CodeCheck took 91311.70 ms. Allocated memory was 125.8 MB in the beginning and 750.8 MB in the end (delta: 625.0 MB). Free memory was 57.8 MB in the beginning and 686.1 MB in the end (delta: -628.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:55:43,140 INFO L168 Benchmark]: Witness Printer took 173.13 ms. Allocated memory is still 750.8 MB. Free memory was 686.1 MB in the beginning and 682.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:55:43,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 32 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 91.2s, OverallIterations: 26, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 264241160 SDtfs, 39169834 SDslu, 5242880 SDs, 0 SdLazy, 435072558 SolverSat, 161284096 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3519 GetRequests, 3002 SyntacticMatches, 47 SemanticMatches, 470 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88765 ImplicationChecksByTransitivity, 87.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 367 ConstructedInterpolants, 0 QuantifiedInterpolants, 63817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 138/244 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L603] int len = 2; [L604] len < 32 && __VERIFIER_nondet_int() [L604] len < 32 && __VERIFIER_nondet_int() [L604] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L575] SLL head = ((void *)0); [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND FALSE !(len > 0) [L585] return head; [L607] SLL s = sll_create(len + 1); [L588] int len = 0; [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND FALSE !(\read(head)) [L593] return len; [L608] COND TRUE len != sll_length(s) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_length_check-1.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.75 ms. Allocated memory is still 125.8 MB. Free memory was 95.3 MB in the beginning and 91.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.80 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.58 ms. Allocated memory is still 125.8 MB. Free memory was 89.1 MB in the beginning and 87.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 824.49 ms. Allocated memory is still 125.8 MB. Free memory was 87.1 MB in the beginning and 57.8 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * CodeCheck took 91311.70 ms. Allocated memory was 125.8 MB in the beginning and 750.8 MB in the end (delta: 625.0 MB). Free memory was 57.8 MB in the beginning and 686.1 MB in the end (delta: -628.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 173.13 ms. Allocated memory is still 750.8 MB. Free memory was 686.1 MB in the beginning and 682.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...