./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/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_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0 --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 0.2.1-dev-aef121e [2021-11-22 15:37:46,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:37:46,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:37:46,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:37:46,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:37:46,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:37:46,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:37:46,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:37:46,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:37:46,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:37:46,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:37:46,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:37:46,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:37:46,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:37:46,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:37:46,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:37:46,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:37:46,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:37:46,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:37:46,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:37:46,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:37:46,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:37:46,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:37:46,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:37:46,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:37:46,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:37:46,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:37:46,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:37:46,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:37:46,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:37:46,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:37:46,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:37:46,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:37:46,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:37:46,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:37:46,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:37:46,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:37:46,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:37:46,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:37:46,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:37:46,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:37:46,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 15:37:46,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:37:46,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:37:46,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:37:46,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:37:46,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:37:46,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:37:46,903 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:37:46,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:37:46,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:37:46,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:37:46,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:37:46,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:37:46,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:37:46,905 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:37:46,905 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:37:46,905 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:37:46,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:37:46,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:37:46,906 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:37:46,906 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:37:46,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:37:46,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:37:46,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:37:46,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:37:46,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:37:46,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:37:46,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:37:46,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:37:46,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:37:46,908 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_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d759988a90bf6714578fc618630dc9d346515dfe23789cba296c3d8ccdbe3f23 [2021-11-22 15:37:47,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:37:47,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:37:47,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:37:47,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:37:47,209 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:37:47,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-11-22 15:37:47,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/data/6c27bfe0f/ee68d8550b4a44abb9449e875edb7921/FLAG2eebb575d [2021-11-22 15:37:47,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:37:47,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-11-22 15:37:47,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/data/6c27bfe0f/ee68d8550b4a44abb9449e875edb7921/FLAG2eebb575d [2021-11-22 15:37:48,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/data/6c27bfe0f/ee68d8550b4a44abb9449e875edb7921 [2021-11-22 15:37:48,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:37:48,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:37:48,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:37:48,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:37:48,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:37:48,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d47f154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48, skipping insertion in model container [2021-11-22 15:37:48,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:37:48,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:37:48,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:37:48,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:37:48,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:37:48,601 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:37:48,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48 WrapperNode [2021-11-22 15:37:48,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:37:48,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:37:48,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:37:48,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:37:48,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,642 INFO L137 Inliner]: procedures = 116, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-11-22 15:37:48,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:37:48,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:37:48,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:37:48,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:37:48,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:37:48,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:37:48,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:37:48,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:37:48,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (1/1) ... [2021-11-22 15:37:48,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:37:48,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:48,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:37:48,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:37:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:37:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:37:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:37:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:37:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:37:48,838 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:37:48,840 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:37:49,012 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:37:49,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:37:49,017 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:37:49,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:37:49 BoogieIcfgContainer [2021-11-22 15:37:49,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:37:49,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:37:49,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:37:49,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:37:49,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:37:48" (1/3) ... [2021-11-22 15:37:49,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61438b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:37:49, skipping insertion in model container [2021-11-22 15:37:49,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:37:48" (2/3) ... [2021-11-22 15:37:49,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61438b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:37:49, skipping insertion in model container [2021-11-22 15:37:49,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:37:49" (3/3) ... [2021-11-22 15:37:49,031 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2021-11-22 15:37:49,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:37:49,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-22 15:37:49,084 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:37:49,091 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 [2021-11-22 15:37:49,091 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-22 15:37:49,105 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) [2021-11-22 15:37:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 15:37:49,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:49,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:37:49,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:49,118 INFO L85 PathProgramCache]: Analyzing trace with hash 889510815, now seen corresponding path program 1 times [2021-11-22 15:37:49,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59872555] [2021-11-22 15:37:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:49,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:49,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:49,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59872555] [2021-11-22 15:37:49,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59872555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:49,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:49,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:37:49,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885808589] [2021-11-22 15:37:49,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:49,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:37:49,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:37:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:37:49,322 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) [2021-11-22 15:37:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:49,389 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-11-22 15:37:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:37:49,392 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 [2021-11-22 15:37:49,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:49,400 INFO L225 Difference]: With dead ends: 21 [2021-11-22 15:37:49,401 INFO L226 Difference]: Without dead ends: 17 [2021-11-22 15:37:49,403 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 [2021-11-22 15:37:49,410 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 [2021-11-22 15:37:49,412 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] [2021-11-22 15:37:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-22 15:37:49,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-22 15:37:49,450 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) [2021-11-22 15:37:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-11-22 15:37:49,453 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2021-11-22 15:37:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:49,453 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-11-22 15:37:49,454 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) [2021-11-22 15:37:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-11-22 15:37:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 15:37:49,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:49,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:37:49,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:37:49,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash 889512737, now seen corresponding path program 1 times [2021-11-22 15:37:49,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:49,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353425503] [2021-11-22 15:37:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:49,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:49,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:49,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353425503] [2021-11-22 15:37:49,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353425503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:49,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:49,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:37:49,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844604830] [2021-11-22 15:37:49,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:49,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:37:49,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:49,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:37:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:37:49,507 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) [2021-11-22 15:37:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:49,526 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-11-22 15:37:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:37:49,526 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 [2021-11-22 15:37:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:49,527 INFO L225 Difference]: With dead ends: 16 [2021-11-22 15:37:49,527 INFO L226 Difference]: Without dead ends: 15 [2021-11-22 15:37:49,527 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 [2021-11-22 15:37:49,529 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 [2021-11-22 15:37:49,530 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] [2021-11-22 15:37:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-22 15:37:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-11-22 15:37:49,533 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) [2021-11-22 15:37:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-22 15:37:49,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2021-11-22 15:37:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:49,534 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-22 15:37:49,534 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) [2021-11-22 15:37:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-22 15:37:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:37:49,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:49,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:49,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:37:49,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:49,537 INFO L85 PathProgramCache]: Analyzing trace with hash 121446415, now seen corresponding path program 1 times [2021-11-22 15:37:49,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:49,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544245832] [2021-11-22 15:37:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:49,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:49,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:49,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544245832] [2021-11-22 15:37:49,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544245832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:49,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:49,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:37:49,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953933621] [2021-11-22 15:37:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:49,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:37:49,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:37:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:37:49,640 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) [2021-11-22 15:37:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:49,665 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-22 15:37:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:37:49,666 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 [2021-11-22 15:37:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:49,667 INFO L225 Difference]: With dead ends: 13 [2021-11-22 15:37:49,667 INFO L226 Difference]: Without dead ends: 13 [2021-11-22 15:37:49,667 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 [2021-11-22 15:37:49,669 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 [2021-11-22 15:37:49,670 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] [2021-11-22 15:37:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-22 15:37:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-22 15:37:49,673 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) [2021-11-22 15:37:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-22 15:37:49,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2021-11-22 15:37:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:49,674 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-22 15:37:49,674 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) [2021-11-22 15:37:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-22 15:37:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:37:49,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:49,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:49,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:37:49,676 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash 121446416, now seen corresponding path program 1 times [2021-11-22 15:37:49,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:49,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940096872] [2021-11-22 15:37:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:49,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:49,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940096872] [2021-11-22 15:37:49,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940096872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:49,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:49,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:37:49,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184868439] [2021-11-22 15:37:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:49,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:37:49,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:37:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:37:49,771 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) [2021-11-22 15:37:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:49,810 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-11-22 15:37:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:37:49,810 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 [2021-11-22 15:37:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:49,811 INFO L225 Difference]: With dead ends: 20 [2021-11-22 15:37:49,811 INFO L226 Difference]: Without dead ends: 20 [2021-11-22 15:37:49,812 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 [2021-11-22 15:37:49,814 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 [2021-11-22 15:37:49,814 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] [2021-11-22 15:37:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-22 15:37:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-11-22 15:37:49,817 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) [2021-11-22 15:37:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-22 15:37:49,818 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2021-11-22 15:37:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:49,819 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-22 15:37:49,819 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) [2021-11-22 15:37:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-22 15:37:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:37:49,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:49,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:49,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:37:49,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -530130097, now seen corresponding path program 1 times [2021-11-22 15:37:49,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:49,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731127120] [2021-11-22 15:37:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:49,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:49,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731127120] [2021-11-22 15:37:49,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731127120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:49,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:49,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:37:49,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008662933] [2021-11-22 15:37:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:49,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:37:49,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:37:49,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:37:49,937 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) [2021-11-22 15:37:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:49,977 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-11-22 15:37:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:37:49,978 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 [2021-11-22 15:37:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:49,979 INFO L225 Difference]: With dead ends: 28 [2021-11-22 15:37:49,979 INFO L226 Difference]: Without dead ends: 28 [2021-11-22 15:37:49,979 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 [2021-11-22 15:37:49,981 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 [2021-11-22 15:37:49,982 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] [2021-11-22 15:37:49,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-22 15:37:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2021-11-22 15:37:49,985 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) [2021-11-22 15:37:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-11-22 15:37:49,986 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2021-11-22 15:37:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:49,987 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-11-22 15:37:49,987 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) [2021-11-22 15:37:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-11-22 15:37:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:37:49,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:49,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:49,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:37:49,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash -472871795, now seen corresponding path program 1 times [2021-11-22 15:37:49,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:49,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277808787] [2021-11-22 15:37:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:49,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:50,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:50,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277808787] [2021-11-22 15:37:50,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277808787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:50,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:50,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:37:50,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295198171] [2021-11-22 15:37:50,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:50,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:37:50,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:37:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:37:50,077 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) [2021-11-22 15:37:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:50,128 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-22 15:37:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:37:50,132 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 [2021-11-22 15:37:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:50,132 INFO L225 Difference]: With dead ends: 19 [2021-11-22 15:37:50,132 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 15:37:50,133 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 [2021-11-22 15:37:50,134 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 [2021-11-22 15:37:50,134 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] [2021-11-22 15:37:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 15:37:50,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-11-22 15:37:50,137 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) [2021-11-22 15:37:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-22 15:37:50,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2021-11-22 15:37:50,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:50,138 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-22 15:37:50,138 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) [2021-11-22 15:37:50,138 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-22 15:37:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:37:50,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:50,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:50,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:37:50,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:50,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:50,140 INFO L85 PathProgramCache]: Analyzing trace with hash -461287736, now seen corresponding path program 1 times [2021-11-22 15:37:50,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:50,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950298063] [2021-11-22 15:37:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:50,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:50,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:50,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950298063] [2021-11-22 15:37:50,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950298063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:50,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947397619] [2021-11-22 15:37:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:50,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:50,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:50,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:50,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:37:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:50,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:37:50,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:50,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:37:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:50,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947397619] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:37:50,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:37:50,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-22 15:37:50,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773194515] [2021-11-22 15:37:50,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:37:50,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:37:50,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:37:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:37:50,644 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) [2021-11-22 15:37:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:50,718 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-22 15:37:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:37:50,719 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 [2021-11-22 15:37:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:50,720 INFO L225 Difference]: With dead ends: 26 [2021-11-22 15:37:50,720 INFO L226 Difference]: Without dead ends: 26 [2021-11-22 15:37:50,721 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 [2021-11-22 15:37:50,722 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 [2021-11-22 15:37:50,722 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] [2021-11-22 15:37:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-22 15:37:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-11-22 15:37:50,729 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) [2021-11-22 15:37:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-22 15:37:50,733 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2021-11-22 15:37:50,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:50,733 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-22 15:37:50,734 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) [2021-11-22 15:37:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-22 15:37:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:37:50,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:50,734 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:50,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:37:50,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 15:37:50,966 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash 218770634, now seen corresponding path program 1 times [2021-11-22 15:37:50,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:50,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899353312] [2021-11-22 15:37:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:50,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:51,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:51,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899353312] [2021-11-22 15:37:51,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899353312] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:51,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410467182] [2021-11-22 15:37:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:51,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:51,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:51,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:51,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:37:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:51,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 15:37:51,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:51,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:37:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:51,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410467182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:37:51,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:37:51,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-11-22 15:37:51,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877806532] [2021-11-22 15:37:51,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:37:51,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:37:51,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:37:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:37:51,464 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) [2021-11-22 15:37:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:51,602 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-11-22 15:37:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:37:51,605 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 [2021-11-22 15:37:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:51,606 INFO L225 Difference]: With dead ends: 44 [2021-11-22 15:37:51,606 INFO L226 Difference]: Without dead ends: 44 [2021-11-22 15:37:51,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:37:51,608 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 [2021-11-22 15:37:51,608 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] [2021-11-22 15:37:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-22 15:37:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 24. [2021-11-22 15:37:51,615 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) [2021-11-22 15:37:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-22 15:37:51,616 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 12 [2021-11-22 15:37:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:51,616 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-22 15:37:51,616 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) [2021-11-22 15:37:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-22 15:37:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:37:51,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:51,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:51,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:37:51,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:51,837 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash -174256376, now seen corresponding path program 1 times [2021-11-22 15:37:51,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:51,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900716922] [2021-11-22 15:37:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:51,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:52,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:52,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900716922] [2021-11-22 15:37:52,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900716922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:52,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390978178] [2021-11-22 15:37:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:52,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:52,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:52,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:52,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:37:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:52,069 WARN L261 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-22 15:37:52,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:52,132 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 10 treesize of output 9 [2021-11-22 15:37:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:52,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:37:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:52,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390978178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:37:52,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:37:52,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2021-11-22 15:37:52,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883349546] [2021-11-22 15:37:52,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:37:52,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 15:37:52,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 15:37:52,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:37:52,716 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) [2021-11-22 15:37:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:52,952 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-22 15:37:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:37:52,954 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 [2021-11-22 15:37:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:52,955 INFO L225 Difference]: With dead ends: 29 [2021-11-22 15:37:52,955 INFO L226 Difference]: Without dead ends: 29 [2021-11-22 15:37:52,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2021-11-22 15:37:52,956 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2021-11-22 15:37:52,956 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] [2021-11-22 15:37:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-22 15:37:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-11-22 15:37:52,959 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) [2021-11-22 15:37:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-22 15:37:52,960 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2021-11-22 15:37:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:52,960 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-22 15:37:52,960 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) [2021-11-22 15:37:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-22 15:37:52,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:37:52,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:52,961 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:53,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:37:53,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:53,165 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:53,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:53,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1415019625, now seen corresponding path program 1 times [2021-11-22 15:37:53,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:53,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805143771] [2021-11-22 15:37:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:53,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:37:53,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:53,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805143771] [2021-11-22 15:37:53,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805143771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:37:53,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:37:53,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:37:53,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121527019] [2021-11-22 15:37:53,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:37:53,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:37:53,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:53,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:37:53,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:37:53,253 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) [2021-11-22 15:37:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:53,264 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-11-22 15:37:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:37:53,264 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 [2021-11-22 15:37:53,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:53,265 INFO L225 Difference]: With dead ends: 27 [2021-11-22 15:37:53,265 INFO L226 Difference]: Without dead ends: 17 [2021-11-22 15:37:53,265 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 [2021-11-22 15:37:53,266 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 [2021-11-22 15:37:53,267 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] [2021-11-22 15:37:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-22 15:37:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-22 15:37:53,273 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) [2021-11-22 15:37:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-22 15:37:53,274 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2021-11-22 15:37:53,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:53,274 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-22 15:37:53,275 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) [2021-11-22 15:37:53,275 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-22 15:37:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:37:53,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:37:53,276 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:53,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:37:53,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-22 15:37:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:37:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1293876800, now seen corresponding path program 2 times [2021-11-22 15:37:53,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:37:53,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580110905] [2021-11-22 15:37:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:37:53,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:37:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:37:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:53,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:37:53,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580110905] [2021-11-22 15:37:53,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580110905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:37:53,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677502204] [2021-11-22 15:37:53,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:37:53,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:37:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:37:53,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:37:53,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:37:53,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:37:53,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:37:53,659 WARN L261 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-22 15:37:53,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:37:53,684 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 10 treesize of output 9 [2021-11-22 15:37:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:53,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:37:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:37:54,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677502204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:37:54,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:37:54,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-11-22 15:37:54,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664310486] [2021-11-22 15:37:54,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:37:54,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-22 15:37:54,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:37:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-22 15:37:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-11-22 15:37:54,484 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 26 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 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) [2021-11-22 15:37:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:37:54,970 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-22 15:37:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 15:37:54,970 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 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 [2021-11-22 15:37:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:37:54,971 INFO L225 Difference]: With dead ends: 21 [2021-11-22 15:37:54,971 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 15:37:54,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2021-11-22 15:37:54,972 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:37:54,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:37:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 15:37:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 15:37:54,974 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) [2021-11-22 15:37:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 15:37:54,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-11-22 15:37:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:37:54,974 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:37:54,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 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) [2021-11-22 15:37:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:37:54,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 15:37:54,977 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (2 of 3 remaining) [2021-11-22 15:37:54,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (1 of 3 remaining) [2021-11-22 15:37:54,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-11-22 15:37:55,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:37:55,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 15:37:55,181 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:37:55,182 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:37:55,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:37:55 BoogieIcfgContainer [2021-11-22 15:37:55,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:37:55,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:37:55,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:37:55,184 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:37:55,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:37:49" (3/4) ... [2021-11-22 15:37:55,191 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 15:37:55,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-22 15:37:55,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 15:37:55,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 15:37:55,204 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 15:37:55,230 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:37:55,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:37:55,231 INFO L158 Benchmark]: Toolchain (without parser) took 7060.64ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 62.4MB in the beginning and 90.7MB in the end (delta: -28.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:37:55,231 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:37:55,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.61ms. Allocated memory is still 102.8MB. Free memory was 62.2MB in the beginning and 72.1MB in the end (delta: -9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:37:55,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.75ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 70.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:37:55,232 INFO L158 Benchmark]: Boogie Preprocessor took 22.76ms. Allocated memory is still 102.8MB. Free memory was 70.4MB in the beginning and 69.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:37:55,233 INFO L158 Benchmark]: RCFGBuilder took 351.81ms. Allocated memory is still 102.8MB. Free memory was 69.2MB in the beginning and 59.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:37:55,233 INFO L158 Benchmark]: TraceAbstraction took 6163.80ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 58.7MB in the beginning and 92.4MB in the end (delta: -33.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:37:55,233 INFO L158 Benchmark]: Witness Printer took 45.80ms. Allocated memory is still 127.9MB. Free memory was 92.4MB in the beginning and 90.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:37:55,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.61ms. Allocated memory is still 102.8MB. Free memory was 62.2MB in the beginning and 72.1MB in the end (delta: -9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.75ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 70.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.76ms. Allocated memory is still 102.8MB. Free memory was 70.4MB in the beginning and 69.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 351.81ms. Allocated memory is still 102.8MB. Free memory was 69.2MB in the beginning and 59.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6163.80ms. Allocated memory was 102.8MB in the beginning and 127.9MB in the end (delta: 25.2MB). Free memory was 58.7MB in the beginning and 92.4MB in the end (delta: -33.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 45.80ms. Allocated memory is still 127.9MB. Free memory was 92.4MB in the beginning and 90.7MB in the end (delta: 1.6MB). 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: 6.1s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 562 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 425 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 352 IncrementalHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 137 mSDtfsCounter, 352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.8s 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 43 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 1575 SizeOfPredicates, 42 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 126 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! [2021-11-22 15:37:55,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514a0d4e-0225-42b2-8fdc-9319952bc394/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE