./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d759988a90bf6714578fc618630dc9d346515dfe23789cba296c3d8ccdbe3f23 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:35:23,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:35:23,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:35:24,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:35:24,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:35:24,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:35:24,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:35:24,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:35:24,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:35:24,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:35:24,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:35:24,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:35:24,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:35:24,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:35:24,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:35:24,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:35:24,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:35:24,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:35:24,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:35:24,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:35:24,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:35:24,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:35:24,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:35:24,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:35:24,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:35:24,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:35:24,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:35:24,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:35:24,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:35:24,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:35:24,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:35:24,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:35:24,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:35:24,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:35:24,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:35:24,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:35:24,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:35:24,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:35:24,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:35:24,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:35:24,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:35:24,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 22:35:24,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:35:24,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:35:24,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:35:24,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:35:24,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:35:24,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:35:24,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:35:24,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:35:24,080 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:35:24,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:35:24,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:35:24,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:35:24,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:35:24,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:35:24,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:35:24,081 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:35:24,081 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:35:24,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:35:24,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:35:24,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:35:24,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:35:24,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:35:24,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:35:24,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:35:24,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:35:24,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:35:24,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:35:24,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:35:24,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:35:24,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:35:24,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:35:24,083 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_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d759988a90bf6714578fc618630dc9d346515dfe23789cba296c3d8ccdbe3f23 [2021-12-06 22:35:24,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:35:24,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:35:24,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:35:24,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:35:24,297 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:35:24,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-12-06 22:35:24,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/data/59c67d62c/bfa93f4821f449fdb7da2a35278cfa0d/FLAG95e26fa86 [2021-12-06 22:35:24,739 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:35:24,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-12-06 22:35:24,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/data/59c67d62c/bfa93f4821f449fdb7da2a35278cfa0d/FLAG95e26fa86 [2021-12-06 22:35:24,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/data/59c67d62c/bfa93f4821f449fdb7da2a35278cfa0d [2021-12-06 22:35:24,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:35:24,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:35:24,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:35:24,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:35:24,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:35:24,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:35:24" (1/1) ... [2021-12-06 22:35:24,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614034b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:24, skipping insertion in model container [2021-12-06 22:35:24,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:35:24" (1/1) ... [2021-12-06 22:35:24,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:35:24,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:35:24,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:35:24,989 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:35:25,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:35:25,038 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:35:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25 WrapperNode [2021-12-06 22:35:25,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:35:25,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:35:25,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:35:25,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:35:25,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,071 INFO L137 Inliner]: procedures = 116, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-12-06 22:35:25,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:35:25,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:35:25,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:35:25,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:35:25,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:35:25,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:35:25,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:35:25,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:35:25,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (1/1) ... [2021-12-06 22:35:25,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:35:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:25,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:35:25,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:35:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:35:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:35:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:35:25,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:35:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:35:25,216 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:35:25,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:35:25,286 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:35:25,291 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:35:25,291 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:35:25,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:35:25 BoogieIcfgContainer [2021-12-06 22:35:25,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:35:25,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:35:25,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:35:25,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:35:25,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:35:24" (1/3) ... [2021-12-06 22:35:25,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e74c980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:35:25, skipping insertion in model container [2021-12-06 22:35:25,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:35:25" (2/3) ... [2021-12-06 22:35:25,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e74c980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:35:25, skipping insertion in model container [2021-12-06 22:35:25,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:35:25" (3/3) ... [2021-12-06 22:35:25,299 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2021-12-06 22:35:25,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:35:25,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-06 22:35:25,335 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:35:25,341 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:35:25,341 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-06 22:35:25,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-12-06 22:35:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:35:25,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:25,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:35:25,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:25,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:25,361 INFO L85 PathProgramCache]: Analyzing trace with hash 889510815, now seen corresponding path program 1 times [2021-12-06 22:35:25,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:25,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750467609] [2021-12-06 22:35:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:25,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:25,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750467609] [2021-12-06 22:35:25,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750467609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:25,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:25,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:35:25,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818980459] [2021-12-06 22:35:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:25,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:35:25,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:35:25,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:35:25,548 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:35:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:25,586 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-12-06 22:35:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:35:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-06 22:35:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:25,595 INFO L225 Difference]: With dead ends: 21 [2021-12-06 22:35:25,595 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 22:35:25,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:35:25,601 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:25,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 25 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 22:35:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-12-06 22:35:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-12-06 22:35:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-12-06 22:35:25,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2021-12-06 22:35:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:25,630 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-12-06 22:35:25,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:35:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-12-06 22:35:25,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:35:25,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:25,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:35:25,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:35:25,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:25,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:25,632 INFO L85 PathProgramCache]: Analyzing trace with hash 889512737, now seen corresponding path program 1 times [2021-12-06 22:35:25,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:25,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801604663] [2021-12-06 22:35:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:25,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:25,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:25,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801604663] [2021-12-06 22:35:25,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801604663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:25,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:25,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:35:25,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856699865] [2021-12-06 22:35:25,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:25,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:35:25,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:35:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:35:25,665 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-06 22:35:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:25,676 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-12-06 22:35:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:35:25,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-06 22:35:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:25,677 INFO L225 Difference]: With dead ends: 16 [2021-12-06 22:35:25,677 INFO L226 Difference]: Without dead ends: 15 [2021-12-06 22:35:25,678 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:35:25,679 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:25,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-06 22:35:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-06 22:35:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-12-06 22:35:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-06 22:35:25,684 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2021-12-06 22:35:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:25,684 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-06 22:35:25,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-06 22:35:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-12-06 22:35:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 22:35:25,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:25,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:25,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:35:25,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:25,686 INFO L85 PathProgramCache]: Analyzing trace with hash 121446415, now seen corresponding path program 1 times [2021-12-06 22:35:25,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:25,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908298969] [2021-12-06 22:35:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:25,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:25,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:25,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908298969] [2021-12-06 22:35:25,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908298969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:25,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:25,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:35:25,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812279580] [2021-12-06 22:35:25,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:25,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:35:25,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:25,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:35:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:35:25,754 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-06 22:35:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:25,776 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-12-06 22:35:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:35:25,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-12-06 22:35:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:25,777 INFO L225 Difference]: With dead ends: 13 [2021-12-06 22:35:25,777 INFO L226 Difference]: Without dead ends: 13 [2021-12-06 22:35:25,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:35:25,779 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:25,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-06 22:35:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-06 22:35:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 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) [2021-12-06 22:35:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-12-06 22:35:25,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2021-12-06 22:35:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:25,783 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-06 22:35:25,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-06 22:35:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-12-06 22:35:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 22:35:25,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:25,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:25,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:35:25,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash 121446416, now seen corresponding path program 1 times [2021-12-06 22:35:25,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:25,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75756648] [2021-12-06 22:35:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:25,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:25,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:25,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75756648] [2021-12-06 22:35:25,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75756648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:25,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:25,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:35:25,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114394240] [2021-12-06 22:35:25,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:25,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:35:25,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:35:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:35:25,859 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-12-06 22:35:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:25,886 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-12-06 22:35:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:35:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2021-12-06 22:35:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:25,887 INFO L225 Difference]: With dead ends: 20 [2021-12-06 22:35:25,887 INFO L226 Difference]: Without dead ends: 20 [2021-12-06 22:35:25,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:35:25,889 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:25,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 34 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-06 22:35:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-12-06 22:35:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-12-06 22:35:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-12-06 22:35:25,891 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2021-12-06 22:35:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:25,892 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-12-06 22:35:25,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-12-06 22:35:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-12-06 22:35:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 22:35:25,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:25,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:25,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:35:25,893 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash -530130097, now seen corresponding path program 1 times [2021-12-06 22:35:25,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:25,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840536208] [2021-12-06 22:35:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:25,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:25,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:25,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840536208] [2021-12-06 22:35:25,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840536208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:25,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:25,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:35:25,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435418855] [2021-12-06 22:35:25,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:25,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:35:25,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:25,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:35:25,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:35:25,962 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-12-06 22:35:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:25,996 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-06 22:35:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:35:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2021-12-06 22:35:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:25,998 INFO L225 Difference]: With dead ends: 28 [2021-12-06 22:35:25,998 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 22:35:25,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:35:25,999 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:26,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 54 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 22:35:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2021-12-06 22:35:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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) [2021-12-06 22:35:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-12-06 22:35:26,004 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2021-12-06 22:35:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:26,004 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-12-06 22:35:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2021-12-06 22:35:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-12-06 22:35:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 22:35:26,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:26,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:26,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:35:26,005 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash -472871795, now seen corresponding path program 1 times [2021-12-06 22:35:26,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:26,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904672742] [2021-12-06 22:35:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:26,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:26,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:26,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904672742] [2021-12-06 22:35:26,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904672742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:26,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:26,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:35:26,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941101857] [2021-12-06 22:35:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:26,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:35:26,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:26,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:35:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:35:26,067 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-12-06 22:35:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:26,097 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-12-06 22:35:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:35:26,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2021-12-06 22:35:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:26,098 INFO L225 Difference]: With dead ends: 19 [2021-12-06 22:35:26,098 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 22:35:26,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:35:26,100 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:26,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 32 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 22:35:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-12-06 22:35:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 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) [2021-12-06 22:35:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-12-06 22:35:26,103 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2021-12-06 22:35:26,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:26,103 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-12-06 22:35:26,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-12-06 22:35:26,104 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-12-06 22:35:26,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:35:26,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:26,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:26,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:35:26,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash -461287736, now seen corresponding path program 1 times [2021-12-06 22:35:26,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:26,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710640190] [2021-12-06 22:35:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:26,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:26,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710640190] [2021-12-06 22:35:26,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710640190] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464001445] [2021-12-06 22:35:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:26,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:26,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:26,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:35:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:26,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:35:26,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:26,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:35:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:26,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464001445] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:35:26,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:35:26,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-06 22:35:26,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408977398] [2021-12-06 22:35:26,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:35:26,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:35:26,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:26,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:35:26,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:35:26,396 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2021-12-06 22:35:26,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:26,449 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-12-06 22:35:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:35:26,449 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 12 [2021-12-06 22:35:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:26,450 INFO L225 Difference]: With dead ends: 26 [2021-12-06 22:35:26,450 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 22:35:26,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:35:26,451 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:26,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 22:35:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-12-06 22:35:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-12-06 22:35:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-12-06 22:35:26,455 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2021-12-06 22:35:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:26,455 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-12-06 22:35:26,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2021-12-06 22:35:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-12-06 22:35:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:35:26,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:26,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:26,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:35:26,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:26,657 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash 218770634, now seen corresponding path program 1 times [2021-12-06 22:35:26,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:26,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423061482] [2021-12-06 22:35:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:26,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:26,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:26,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423061482] [2021-12-06 22:35:26,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423061482] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:26,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983089293] [2021-12-06 22:35:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:26,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:26,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:26,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:26,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:35:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:26,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:35:26,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:26,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:35:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:27,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983089293] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:35:27,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:35:27,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-06 22:35:27,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880928106] [2021-12-06 22:35:27,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:35:27,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:35:27,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:27,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:35:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:35:27,022 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-12-06 22:35:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:27,109 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-12-06 22:35:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:35:27,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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 12 [2021-12-06 22:35:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:27,110 INFO L225 Difference]: With dead ends: 44 [2021-12-06 22:35:27,111 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 22:35:27,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:35:27,111 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:27,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 80 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 22:35:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 24. [2021-12-06 22:35:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 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) [2021-12-06 22:35:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-06 22:35:27,114 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2021-12-06 22:35:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:27,115 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-06 22:35:27,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-12-06 22:35:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-06 22:35:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:35:27,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:27,115 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:27,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:35:27,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 22:35:27,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -174256376, now seen corresponding path program 1 times [2021-12-06 22:35:27,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:27,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095654381] [2021-12-06 22:35:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:27,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:27,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095654381] [2021-12-06 22:35:27,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095654381] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572068475] [2021-12-06 22:35:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:27,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:27,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:27,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:27,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:35:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:27,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 22:35:27,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:27,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:35:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:27,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:35:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:27,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572068475] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:35:27,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:35:27,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2021-12-06 22:35:27,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919830398] [2021-12-06 22:35:27,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:35:27,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 22:35:27,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 22:35:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:35:27,894 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 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) [2021-12-06 22:35:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:28,051 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-12-06 22:35:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:35:28,051 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 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 12 [2021-12-06 22:35:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:28,052 INFO L225 Difference]: With dead ends: 29 [2021-12-06 22:35:28,052 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 22:35:28,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:35:28,054 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:28,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 107 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:35:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 22:35:28,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-12-06 22:35:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 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) [2021-12-06 22:35:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-12-06 22:35:28,058 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2021-12-06 22:35:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:28,058 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-06 22:35:28,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 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) [2021-12-06 22:35:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-12-06 22:35:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 22:35:28,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:28,059 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:28,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:35:28,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:28,260 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1415019625, now seen corresponding path program 1 times [2021-12-06 22:35:28,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:28,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289005255] [2021-12-06 22:35:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:28,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:35:28,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289005255] [2021-12-06 22:35:28,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289005255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:28,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:35:28,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:35:28,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652380720] [2021-12-06 22:35:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:28,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:35:28,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:35:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:35:28,306 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-12-06 22:35:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:28,312 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-12-06 22:35:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:35:28,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) Word has length 13 [2021-12-06 22:35:28,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:28,313 INFO L225 Difference]: With dead ends: 27 [2021-12-06 22:35:28,313 INFO L226 Difference]: Without dead ends: 17 [2021-12-06 22:35:28,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:35:28,314 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:28,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-06 22:35:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-06 22:35:28,317 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) [2021-12-06 22:35:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-12-06 22:35:28,317 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2021-12-06 22:35:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:28,317 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-12-06 22:35:28,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-12-06 22:35:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-12-06 22:35:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:35:28,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:28,318 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:28,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:35:28,318 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-06 22:35:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:28,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1293876800, now seen corresponding path program 2 times [2021-12-06 22:35:28,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:28,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727595336] [2021-12-06 22:35:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:28,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:28,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:28,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727595336] [2021-12-06 22:35:28,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727595336] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:28,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080777344] [2021-12-06 22:35:28,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:35:28,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:28,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:28,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:28,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:35:28,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:35:28,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:35:28,567 WARN L261 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 22:35:28,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:28,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:35:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:28,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:35:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:29,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080777344] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:35:29,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:35:29,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2021-12-06 22:35:29,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798305197] [2021-12-06 22:35:29,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:35:29,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 22:35:29,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 22:35:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:35:29,201 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2021-12-06 22:35:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:29,528 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-12-06 22:35:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:35:29,528 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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 [2021-12-06 22:35:29,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:29,529 INFO L225 Difference]: With dead ends: 21 [2021-12-06 22:35:29,529 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 22:35:29,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=1328, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 22:35:29,530 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:29,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 90 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:35:29,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 22:35:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 22:35:29,531 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) [2021-12-06 22:35:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:35:29,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-12-06 22:35:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:29,531 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:35:29,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2021-12-06 22:35:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:35:29,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 22:35:29,533 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (2 of 3 remaining) [2021-12-06 22:35:29,533 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (1 of 3 remaining) [2021-12-06 22:35:29,533 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-12-06 22:35:29,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 22:35:29,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 22:35:29,743 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:29,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:35:29,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:35:29 BoogieIcfgContainer [2021-12-06 22:35:29,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:35:29,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:35:29,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:35:29,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:35:29,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:35:25" (3/4) ... [2021-12-06 22:35:29,764 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 22:35:29,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-06 22:35:29,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 22:35:29,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 22:35:29,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 22:35:29,808 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:35:29,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:35:29,808 INFO L158 Benchmark]: Toolchain (without parser) took 5048.66ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 36.4MB in the beginning and 81.4MB in the end (delta: -45.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:35:29,808 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 73.4MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:35:29,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.93ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 36.2MB in the beginning and 63.5MB in the end (delta: -27.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:35:29,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.74ms. Allocated memory is still 92.3MB. Free memory was 63.5MB in the beginning and 61.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:35:29,809 INFO L158 Benchmark]: Boogie Preprocessor took 21.65ms. Allocated memory is still 92.3MB. Free memory was 61.7MB in the beginning and 60.7MB in the end (delta: 998.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:35:29,809 INFO L158 Benchmark]: RCFGBuilder took 197.99ms. Allocated memory is still 92.3MB. Free memory was 60.7MB in the beginning and 51.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:35:29,810 INFO L158 Benchmark]: TraceAbstraction took 4460.69ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 50.5MB in the beginning and 83.4MB in the end (delta: -32.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:35:29,810 INFO L158 Benchmark]: Witness Printer took 52.41ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 81.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:35:29,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 73.4MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.93ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 36.2MB in the beginning and 63.5MB in the end (delta: -27.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.74ms. Allocated memory is still 92.3MB. Free memory was 63.5MB in the beginning and 61.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.65ms. Allocated memory is still 92.3MB. Free memory was 61.7MB in the beginning and 60.7MB in the end (delta: 998.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 197.99ms. Allocated memory is still 92.3MB. Free memory was 60.7MB in the beginning and 51.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4460.69ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 50.5MB in the beginning and 83.4MB in the end (delta: -32.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.41ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 81.4MB in the end (delta: 2.0MB). 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: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: 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, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 564 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 427 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 364 IncrementalHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 137 mSDtfsCounter, 364 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=9, InterpolantAutomatonStates: 73, 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, 11 MinimizatonAttempts, 43 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 1599 SizeOfPredicates, 42 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 10/59 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! [2021-12-06 22:35:29,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2714dcb-d279-4bd3-98b8-f18a400e50b3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE