./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemset-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemset-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 76a19d55092393246c8e604e93c7f3c03d04f266b0fac2883ac2e98083df3bd5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:37:02,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:37:02,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:37:02,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:37:02,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:37:02,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:37:02,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:37:02,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:37:02,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:37:02,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:37:02,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:37:02,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:37:02,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:37:02,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:37:02,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:37:02,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:37:02,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:37:02,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:37:02,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:37:02,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:37:02,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:37:02,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:37:02,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:37:02,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:37:02,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:37:02,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:37:02,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:37:02,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:37:02,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:37:02,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:37:02,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:37:02,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:37:02,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:37:02,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:37:02,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:37:02,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:37:02,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:37:02,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:37:02,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:37:02,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:37:02,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:37:02,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-12-14 14:37:02,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:37:02,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:37:02,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:37:02,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:37:02,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:37:02,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:37:02,776 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:37:02,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:37:02,777 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:37:02,777 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:37:02,777 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:37:02,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:37:02,777 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:37:02,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:37:02,778 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:37:02,778 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:37:02,778 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:37:02,778 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:37:02,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 14:37:02,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 14:37:02,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:37:02,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:37:02,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:37:02,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:37:02,780 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 14:37:02,780 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 14:37:02,780 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 14:37:02,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:37:02,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:37:02,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:37:02,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:37:02,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:37:02,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:37:02,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:37:02,781 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:37:02,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:37:02,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:37:02,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:37:02,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:37:02,782 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_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76a19d55092393246c8e604e93c7f3c03d04f266b0fac2883ac2e98083df3bd5 [2022-12-14 14:37:02,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:37:02,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:37:02,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:37:02,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:37:02,981 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:37:02,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemset-alloca-2.i [2022-12-14 14:37:05,601 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:37:05,738 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:37:05,738 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/sv-benchmarks/c/termination-memory-alloca/openbsd_cmemset-alloca-2.i [2022-12-14 14:37:05,745 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/data/a8aa93b8b/691dda929824427dbfd96a6583f7201f/FLAG05682d04a [2022-12-14 14:37:05,755 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/data/a8aa93b8b/691dda929824427dbfd96a6583f7201f [2022-12-14 14:37:05,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:37:05,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:37:05,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:37:05,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:37:05,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:37:05,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:37:05" (1/1) ... [2022-12-14 14:37:05,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf1da94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:05, skipping insertion in model container [2022-12-14 14:37:05,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:37:05" (1/1) ... [2022-12-14 14:37:05,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:37:05,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:37:06,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:37:06,021 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:37:06,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:37:06,072 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:37:06,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06 WrapperNode [2022-12-14 14:37:06,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:37:06,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:37:06,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:37:06,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:37:06,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,101 INFO L138 Inliner]: procedures = 111, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-12-14 14:37:06,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:37:06,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:37:06,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:37:06,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:37:06,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:37:06,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:37:06,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:37:06,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:37:06,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (1/1) ... [2022-12-14 14:37:06,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:37:06,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:37:06,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:37:06,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:37:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:37:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:37:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:37:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:37:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:37:06,263 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:37:06,264 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:37:06,347 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:37:06,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:37:06,384 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:37:06,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:37:06 BoogieIcfgContainer [2022-12-14 14:37:06,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:37:06,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:37:06,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:37:06,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:37:06,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:37:05" (1/3) ... [2022-12-14 14:37:06,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71de6492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:37:06, skipping insertion in model container [2022-12-14 14:37:06,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:37:06" (2/3) ... [2022-12-14 14:37:06,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71de6492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:37:06, skipping insertion in model container [2022-12-14 14:37:06,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:37:06" (3/3) ... [2022-12-14 14:37:06,392 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-2.i [2022-12-14 14:37:06,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:37:06,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-14 14:37:06,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:37:06,440 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55b985d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:37:06,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-14 14:37:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:37:06,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:06,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:37:06,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-12-14 14:37:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2609821, now seen corresponding path program 1 times [2022-12-14 14:37:06,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:06,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60553035] [2022-12-14 14:37:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:06,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:06,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60553035] [2022-12-14 14:37:06,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60553035] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:37:06,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:37:06,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:37:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512931667] [2022-12-14 14:37:06,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:37:06,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:37:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:37:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:37:06,785 INFO L87 Difference]: Start difference. First operand has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:06,837 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2022-12-14 14:37:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:37:06,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 14:37:06,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:06,844 INFO L225 Difference]: With dead ends: 11 [2022-12-14 14:37:06,845 INFO L226 Difference]: Without dead ends: 10 [2022-12-14 14:37:06,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:37:06,848 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:06,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:37:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-14 14:37:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-12-14 14:37:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-12-14 14:37:06,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2022-12-14 14:37:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:06,870 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-14 14:37:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-12-14 14:37:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:37:06,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:06,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:37:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:37:06,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-12-14 14:37:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2609822, now seen corresponding path program 1 times [2022-12-14 14:37:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:06,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907529677] [2022-12-14 14:37:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:07,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:07,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907529677] [2022-12-14 14:37:07,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907529677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:37:07,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:37:07,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:37:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67179522] [2022-12-14 14:37:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:37:07,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:37:07,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:37:07,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:37:07,031 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:07,068 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2022-12-14 14:37:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:37:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 14:37:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:07,069 INFO L225 Difference]: With dead ends: 11 [2022-12-14 14:37:07,070 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 14:37:07,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:37:07,071 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:07,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:37:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 14:37:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 14:37:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-12-14 14:37:07,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 4 [2022-12-14 14:37:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:07,073 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-12-14 14:37:07,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-12-14 14:37:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:37:07,073 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:07,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:37:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:37:07,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-12-14 14:37:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2629898, now seen corresponding path program 1 times [2022-12-14 14:37:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:07,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824448469] [2022-12-14 14:37:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:07,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:07,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824448469] [2022-12-14 14:37:07,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824448469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:37:07,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:37:07,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:37:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112981769] [2022-12-14 14:37:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:37:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:37:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:37:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:37:07,148 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:07,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:07,158 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-12-14 14:37:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:37:07,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 14:37:07,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:07,159 INFO L225 Difference]: With dead ends: 11 [2022-12-14 14:37:07,159 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 14:37:07,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:37:07,161 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:07,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:37:07,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 14:37:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 14:37:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-12-14 14:37:07,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2022-12-14 14:37:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:07,164 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-12-14 14:37:07,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-12-14 14:37:07,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:37:07,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:07,165 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-14 14:37:07,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:37:07,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-12-14 14:37:07,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash 440573069, now seen corresponding path program 1 times [2022-12-14 14:37:07,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:07,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27813779] [2022-12-14 14:37:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:07,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:07,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27813779] [2022-12-14 14:37:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27813779] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:37:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093356423] [2022-12-14 14:37:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:07,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:37:07,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:37:07,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:37:07,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:37:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:07,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 14:37:07,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:37:07,584 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 14:37:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:07,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:37:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:08,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093356423] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:37:08,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [990574598] [2022-12-14 14:37:08,104 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 14:37:08,104 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:37:08,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:37:08,114 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:37:08,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:37:08,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 14:37:08,237 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:08,330 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:08,388 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:08,394 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:37:08,939 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '155#(and (<= |ULTIMATE.start_cmemset_~n#1| 2147483647) (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (= |ULTIMATE.start_cmemset_#t~post3#1.base| |ULTIMATE.start_cmemset_~d~0#1.base|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= (+ |ULTIMATE.start_cmemset_#t~post3#1.offset| 1) |ULTIMATE.start_cmemset_~d~0#1.offset|) (<= |ULTIMATE.start_cmemset_#in~c#1| 2147483647) (<= 0 |ULTIMATE.start_cmemset_#in~dst#1.base|) (< (select |#length| |ULTIMATE.start_cmemset_#t~post3#1.base|) (+ |ULTIMATE.start_cmemset_#t~post3#1.offset| 1)) (<= 0 |ULTIMATE.start_cmemset_~dst#1.offset|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 0 |ULTIMATE.start_cmemset_#t~post3#1.offset|) (<= 1 |ULTIMATE.start_cmemset_#in~n#1|) (<= 0 |ULTIMATE.start_cmemset_#in~dst#1.offset|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_cmemset_#in~dst#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 0 |ULTIMATE.start_cmemset_#t~post3#1.base|) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~c~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_cmemset_#in~c#1|)) (<= 0 |ULTIMATE.start_cmemset_~dst#1.base|) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= |ULTIMATE.start_cmemset_~dst#1.offset| 0) (<= |ULTIMATE.start_cmemset_#in~n#1| 2147483647) (<= 0 (+ |ULTIMATE.start_cmemset_~c#1| 2147483648)) (<= |ULTIMATE.start_cmemset_~c#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 14:37:08,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:37:08,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:37:08,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-14 14:37:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752388752] [2022-12-14 14:37:08,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:37:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 14:37:08,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 14:37:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-12-14 14:37:08,942 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:09,135 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-12-14 14:37:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 14:37:09,136 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 14:37:09,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:09,136 INFO L225 Difference]: With dead ends: 14 [2022-12-14 14:37:09,137 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 14:37:09,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2022-12-14 14:37:09,138 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:09,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:37:09,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 14:37:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 14:37:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 14:37:09,140 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2022-12-14 14:37:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:09,140 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 14:37:09,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 14:37:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 14:37:09,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:09,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:37:09,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:37:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:37:09,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-12-14 14:37:09,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash 440572003, now seen corresponding path program 1 times [2022-12-14 14:37:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:09,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323137563] [2022-12-14 14:37:09,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:09,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323137563] [2022-12-14 14:37:09,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323137563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:37:09,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:37:09,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:37:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016406125] [2022-12-14 14:37:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:37:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:37:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:37:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:37:09,521 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:09,529 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-12-14 14:37:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:37:09,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 14:37:09,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:09,530 INFO L225 Difference]: With dead ends: 13 [2022-12-14 14:37:09,530 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 14:37:09,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:37:09,531 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:09,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:37:09,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 14:37:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 14:37:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-12-14 14:37:09,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2022-12-14 14:37:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:09,533 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-12-14 14:37:09,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-12-14 14:37:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 14:37:09,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:09,534 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2022-12-14 14:37:09,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:37:09,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-12-14 14:37:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash -306980802, now seen corresponding path program 2 times [2022-12-14 14:37:09,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:09,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246291649] [2022-12-14 14:37:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:09,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:10,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:10,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246291649] [2022-12-14 14:37:10,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246291649] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:37:10,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779145408] [2022-12-14 14:37:10,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:37:10,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:37:10,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:37:10,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:37:10,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:37:10,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:37:10,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:37:10,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 14:37:10,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:37:10,176 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 14:37:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:10,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:37:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:10,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779145408] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:37:10,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [297470096] [2022-12-14 14:37:10,881 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 14:37:10,882 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:37:10,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:37:10,882 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:37:10,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:37:10,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 14:37:10,957 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:11,012 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:11,054 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:11,061 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:37:11,599 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '303#(and (<= |ULTIMATE.start_cmemset_~n#1| 2147483647) (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (= |ULTIMATE.start_cmemset_#t~post3#1.base| |ULTIMATE.start_cmemset_~d~0#1.base|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= (+ |ULTIMATE.start_cmemset_#t~post3#1.offset| 1) |ULTIMATE.start_cmemset_~d~0#1.offset|) (<= |ULTIMATE.start_cmemset_#in~c#1| 2147483647) (<= 0 |ULTIMATE.start_cmemset_#in~dst#1.base|) (< (select |#length| |ULTIMATE.start_cmemset_#t~post3#1.base|) (+ |ULTIMATE.start_cmemset_#t~post3#1.offset| 1)) (<= 0 |ULTIMATE.start_cmemset_~dst#1.offset|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 0 |ULTIMATE.start_cmemset_#t~post3#1.offset|) (<= 1 |ULTIMATE.start_cmemset_#in~n#1|) (<= 0 |ULTIMATE.start_cmemset_#in~dst#1.offset|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_cmemset_#in~dst#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 0 |ULTIMATE.start_cmemset_#t~post3#1.base|) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~c~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_cmemset_#in~c#1|)) (<= 0 |ULTIMATE.start_cmemset_~dst#1.base|) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= |ULTIMATE.start_cmemset_~dst#1.offset| 0) (<= |ULTIMATE.start_cmemset_#in~n#1| 2147483647) (<= 0 (+ |ULTIMATE.start_cmemset_~c#1| 2147483648)) (<= |ULTIMATE.start_cmemset_~c#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 14:37:11,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:37:11,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:37:11,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2022-12-14 14:37:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506913370] [2022-12-14 14:37:11,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:37:11,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 14:37:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 14:37:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2022-12-14 14:37:11,601 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:12,399 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-12-14 14:37:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 14:37:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 14:37:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:12,400 INFO L225 Difference]: With dead ends: 17 [2022-12-14 14:37:12,400 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 14:37:12,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 14:37:12,402 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:12,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:37:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 14:37:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 14:37:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-12-14 14:37:12,404 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2022-12-14 14:37:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:12,404 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-12-14 14:37:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-12-14 14:37:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 14:37:12,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:37:12,404 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2022-12-14 14:37:12,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:37:12,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:37:12,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-12-14 14:37:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:37:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash 290268638, now seen corresponding path program 3 times [2022-12-14 14:37:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:37:12,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974015523] [2022-12-14 14:37:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:37:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:37:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:37:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:13,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:37:13,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974015523] [2022-12-14 14:37:13,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974015523] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:37:13,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105747854] [2022-12-14 14:37:13,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 14:37:13,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:37:13,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:37:13,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:37:13,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:37:13,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 14:37:13,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:37:13,120 WARN L261 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-14 14:37:13,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:37:13,137 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-12-14 14:37:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:13,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:37:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:37:14,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105747854] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:37:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1390250940] [2022-12-14 14:37:14,149 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 14:37:14,150 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:37:14,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:37:14,150 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:37:14,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:37:14,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 14:37:14,212 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:14,253 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:14,291 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 14:37:14,294 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:37:14,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '488#(and (<= |ULTIMATE.start_cmemset_~n#1| 2147483647) (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (= |ULTIMATE.start_cmemset_#t~post3#1.base| |ULTIMATE.start_cmemset_~d~0#1.base|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= (+ |ULTIMATE.start_cmemset_#t~post3#1.offset| 1) |ULTIMATE.start_cmemset_~d~0#1.offset|) (<= |ULTIMATE.start_cmemset_#in~c#1| 2147483647) (<= 0 |ULTIMATE.start_cmemset_#in~dst#1.base|) (< (select |#length| |ULTIMATE.start_cmemset_#t~post3#1.base|) (+ |ULTIMATE.start_cmemset_#t~post3#1.offset| 1)) (<= 0 |ULTIMATE.start_cmemset_~dst#1.offset|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 0 |ULTIMATE.start_cmemset_#t~post3#1.offset|) (<= 1 |ULTIMATE.start_cmemset_#in~n#1|) (<= 0 |ULTIMATE.start_cmemset_#in~dst#1.offset|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_cmemset_#in~dst#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 0 |ULTIMATE.start_cmemset_#t~post3#1.base|) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~c~0#1| 2147483648)) (<= 0 (+ 2147483648 |ULTIMATE.start_cmemset_#in~c#1|)) (<= 0 |ULTIMATE.start_cmemset_~dst#1.base|) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= |ULTIMATE.start_cmemset_~dst#1.offset| 0) (<= |ULTIMATE.start_cmemset_#in~n#1| 2147483647) (<= 0 (+ |ULTIMATE.start_cmemset_~c#1| 2147483648)) (<= |ULTIMATE.start_cmemset_~c#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 14:37:14,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:37:14,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:37:14,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-12-14 14:37:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555572815] [2022-12-14 14:37:14,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:37:14,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 14:37:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:37:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 14:37:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806 [2022-12-14 14:37:14,786 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:37:15,540 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 14:37:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 14:37:15,540 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 14:37:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:37:15,540 INFO L225 Difference]: With dead ends: 19 [2022-12-14 14:37:15,540 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:37:15,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=395, Invalid=3145, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 14:37:15,541 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:37:15,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:37:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:37:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:37:15,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:37:15,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-12-14 14:37:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:37:15,542 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:37:15,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:37:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:37:15,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:37:15,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2022-12-14 14:37:15,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2022-12-14 14:37:15,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2022-12-14 14:37:15,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 14:37:15,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:37:15,754 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-12-14 14:37:15,759 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:37:15,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:37:15 BoogieIcfgContainer [2022-12-14 14:37:15,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:37:15,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:37:15,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:37:15,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:37:15,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:37:06" (3/4) ... [2022-12-14 14:37:15,775 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:37:15,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-14 14:37:15,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 14:37:15,789 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 14:37:15,790 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 14:37:15,812 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:37:15,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:37:15,813 INFO L158 Benchmark]: Toolchain (without parser) took 10054.60ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 101.3MB in the beginning and 67.5MB in the end (delta: 33.8MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2022-12-14 14:37:15,813 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 108.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:37:15,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.19ms. Allocated memory is still 138.4MB. Free memory was 101.3MB in the beginning and 85.8MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 14:37:15,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.09ms. Allocated memory is still 138.4MB. Free memory was 85.8MB in the beginning and 83.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:37:15,814 INFO L158 Benchmark]: Boogie Preprocessor took 19.90ms. Allocated memory is still 138.4MB. Free memory was 83.9MB in the beginning and 82.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:37:15,814 INFO L158 Benchmark]: RCFGBuilder took 263.04ms. Allocated memory is still 138.4MB. Free memory was 82.8MB in the beginning and 69.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:37:15,814 INFO L158 Benchmark]: TraceAbstraction took 9377.75ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 68.5MB in the beginning and 70.4MB in the end (delta: -1.9MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-12-14 14:37:15,814 INFO L158 Benchmark]: Witness Printer took 46.08ms. Allocated memory is still 167.8MB. Free memory was 70.4MB in the beginning and 67.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:37:15,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 108.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.19ms. Allocated memory is still 138.4MB. Free memory was 101.3MB in the beginning and 85.8MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.09ms. Allocated memory is still 138.4MB. Free memory was 85.8MB in the beginning and 83.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.90ms. Allocated memory is still 138.4MB. Free memory was 83.9MB in the beginning and 82.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 263.04ms. Allocated memory is still 138.4MB. Free memory was 82.8MB in the beginning and 69.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9377.75ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 68.5MB in the beginning and 70.4MB in the end (delta: -1.9MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Witness Printer took 46.08ms. Allocated memory is still 167.8MB. Free memory was 70.4MB in the beginning and 67.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 558]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 631 IncrementalHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 21 mSDtfsCounter, 631 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=6, InterpolantAutomatonStates: 60, 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, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 2421 SizeOfPredicates, 34 NumberOfNonLiveVariables, 339 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 7/105 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 14:37:15,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa15fb57-be68-44c4-83e7-f501611036f7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE